L640GU53NI

Am29LV641G Data Sheet RETIRED PRODUCT This product has been retired and is not recommended for designs. For new and current designs, S29GL064A supersedes Am29LV641G and is the factory-recommended migration path. Please refer to the S29GL064A datasheet for specifications and ordering information. Availability of this document is retained for reference and historical purposes only. June 2005 The following document specifies Spansion memory products that are now offered by both Advanced Micro Devices and Fujitsu. Although the document is marked with the name of the company that originally developed the specification, these products will be offered to customers of both AMD and Fujitsu. Continuity of Specifications There is no change to this datasheet as a result of offering the device as a Spansion product. Any changes that have been made are the result of normal datasheet improvement and are noted in the document revision summary, where supported. Future routine revisions will occur when appropriate, and changes will be noted in a revision summary. For More Information Please contact your local AMD or Fujitsu sales office for additional information about Spansion memory solutions. Publication Number 25295 Revision A Amendment +3 Issue Date June 14, 2005 THIS PAGE LEFT INTENTIONALLY BLANK. ADVANCE INFORMATION Am29LV641G 64 Megabit (4 M x 16-Bit) CMOS 3.0 Volt-only Uniform Sector Flash Memory with VersatileI/O™ Control This product has been retired and is not recommended for designs. For new and current designs, S29GL064A supersedes Am29LV641G and is the factory-recommended migration path. Please refer to the S29GL064A datasheet for specifications and ordering information. Availability of this document is retained for reference and historical purposes only. DISTINCTIVE CHARACTERISTICS ARCHITECTURAL ADVANTAGES ■ Single power supply operation — 2.7 to 3.6 volt read, erase, and program operations ■ SecSi™ (Secured Silicon) Sector region — 128-word sector for permanent, secure identification through an 8-word random Electronic Serial Number — May be programmed and locked at the factory or by the customer — Accessible through a command sequence ■ VersatileI/O™ control — Device generates data output voltages and tolerates data input voltages as determined by the voltage on the VIO pin ■ Manufactured on 0.18 µm process technology ■ Flexible sector architecture — One hundred twenty-eight 32 Kword sectors ■ Compatibility with JEDEC standards — Pinout and software compatible with single-power supply Flash standard ■ Package options — 48-pin TSOP and Reverse TSOP (LV641GH/L only) — 63-ball Fine-Pitch BGA (LV640GU only) — 64-ball Fortified BGA (LV640GU only) ■ Minimum 1 million erase cycle guarantee per sector ■ 20-year data retention at 125°C ■ Ultra low power consumption (typical values at 3.0 V, 5 MHz) — 9 mA typical active read current — 26 mA typical erase/program current — 200 nA typical standby mode current ■ Program and erase performance (VHH not applied to the ACC input pin) — Word program time: 7 µs typical — Sector erase time: 0.6 s typical for each 32 Kword sector SOFTWARE AND HARDWARE FEATURES ■ Hardware features — Hardware reset input (RESET#): resets device for new operation — WP# input: protects first or last 32 Kword sector regardless of sector protection settings (LV641GH/L only) — ACC input: Accelerates programming time for higher throughput during system production ■ Software features — Program Suspend & Resume: read other sectors before programming operation is completed — Sector Group Protection: VCC-level method of preventing program or erase operations within a sector — Temporary Sector Group Unprotect: VID-level method of changing in previously locked sectors — CFI (Common Flash Interface) compliant: allows host system to identify and accommodate multiple flash devices — Erase Suspend/Erase Resume: read/program other sectors before an erase operation is complete — Data# Polling and toggle bits provide erase and programming operation status — Unlock Bypass Program command reduces overall multiple-word programming time PERFORMANCE CHARCTERISTICS ■ High performance — Access time ratings as fast as 55 ns This document contains information on a product under development at Advance Micro Devices. The information is intended to help you evaluate this product. Do not design in the product without contacting the factory. AMD reserves the right to change or discontinue work on this proposed product without notice. Publication# 25295 Rev: A Amendment/+3 Issue Date: June 14, 2005 Refer to AMD’s Website (www.amd.com) for the latest information. ADVANCE INFORMATION GENERAL DESCRIPTION The Am29LV641G are 64 Mbit, 3.0 volt (3.0 V to 3.6 V) single power supply flash memory devices organized as 4,194,304 words. Data appears on DQ15–DQ0. These devices are designed to be programmed in-system with the standard system 3.0 volt VCC supply. A 12.0 volt VPP is not required for program or erase operations. The device can also be programmed in standard EPROM programmers. Access times of 55 regulated volage and 70 ns full voltage range are available for applications where VIO ≥ V CC . The Am29LV641GH/L is offered in 48-pin T S O P a n d r eve r s e T S O P p a ck a g e s. T h e Am29LV640GU is offered in a 63-ball Fine-pitch BGA package, and a 64-ball Fortified BGA. To eliminate bus contention each device has separate chip enable (CE#), write enable (WE#) and output enable (OE#) controls. Each device requires only a s ingle 3.0 volt power supply (2.7 V to 3.6 V) for both read and write functions. Internally generated and regulated voltages are provided for the program and erase operations. The device is entirely command set compatible with the J EDEC single-power-supply Flash standard . Commands are written to the command register using standard microprocessor write timing. Register contents serve as inputs to an internal state-machine that controls the erase and programming circuitry. Write cycles also internally latch addresses and data needed for the programming and erase operations. Reading data out of the device is similar to reading from other Flash or EPROM devices. Device programming occurs by executing the program command sequence. This initiates the E mbedded Program algorithm—an internal algorithm that automatically times the program pulse widths and verifies proper cell margin. The Unlock Bypass mode facilitates faster programming times by requiring only two write cycles to program data instead of four. Device erasure occurs by executing the erase command sequence. This initiates the Embedded Erase algorithm—an internal algorithm that automatically preprograms the array (if it is not already programmed) before executing the erase operation. During erase, the device automatically times the erase pulse widths and verifies proper cell margin. The VersatileI/O™ (VIO) control allows the host system to set the voltage levels that the device generates at its data outputs and the voltages tolerated at its data inputs to the same voltage level that is asserted on the VIO pin. This allows the device to operate in 1.8 V or 3 V system environment as required. The host system can detect whether a program or erase operation is complete by reading the DQ7 (Data# Polling) or DQ6 (toggle) s tatus bits . After a program or erase cycle has been completed, the de5 vice is ready to read array data or accept another command. The sector erase architecture allows memory sectors to be erased and reprogrammed without affecting the data contents of other sectors. The device is fully erased when shipped from the factory. Hardware data protection m easures include a low V CC d etector that automatically inhibits write operations during power transitions. The hardware sector protection feature disables both program and erase operations in any combination of sectors of memory. This can be achieved in-system or via programming equipment. The Erase Suspend/Erase Resume feature enables the user to put erase on hold for any period of time to read data from, or program data to, any sector that is not selected for erasure. True background erase can thus be achieved. The Program Suspend/Program Resume feature enables the host system to pause a program operation in a given sector to read any other sector and then complete the program operation. The hardware RESET# pin terminates any operation in progress and resets the internal state machine to reading array data. The RESET# pin may be tied to the system reset circuitry. A system reset would thus also reset the device, enabling the system microprocessor to read boot-up firmware from the Flash memory device. The device offers a standby mode as a power-saving feature. Once the system places the device into the standby mode power consumption is greatly reduced. The SecSi™ (Secured Silicon) Sector provides an minimum 128-word area for code or data that can be permanently protected. Once this sector is protected, no further programming or erasing within the sector can occur. The Write Protect (WP#) feature protects the first or last sector by asserting a logic low on the WP# pin. The protected sector will still be protected even during accelerated programming. (Am29LV641GH/L only) The a ccelerated program (ACC) feature allows the system to program the device at a much faster rate. When ACC is pulled high to VHH, the device enters the Unlock Bypass mode, enabling the user to reduce the time needed to do the program operation. This feature is intended to increase factory throughput during system production, but may also be used in the field if desired. AMD’s Flash technology combines years of Flash memory manufacturing experience to produce the highest levels of quality, reliability and cost effectiveness. The device electrically erases all bits within a sector simultaneously via Fowler-Nordheim tunnelling. The data is programmed using hot electron injection. June 14, 2005 Am29LV641G ADVANCE INFORMATION TABLE OF CONTENTS Product Selector Guide . . . . . . . . . . . . . . . . . . . . . 4 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Connection Diagrams . . . . . . . . . . . . . . . . . . . . . . . 5 Special Package Handling Instructions .................................... 7 Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Logic Symbol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Ordering Information . . . . . . . . . . . . . . . . . . . . . . . 9 Device Bus Operations . . . . . . . . . . . . . . . . . . . . . 10 Table 1. Device Bus Operations .....................................................10 DQ7: Data# Polling ................................................................. 30 Figure 6. Data# Polling Algorithm .................................................. 30 DQ6: Toggle Bit I .................................................................... 30 Figure 7. Toggle Bit Algorithm........................................................ 31 DQ2: Toggle Bit II ................................................................... 32 Reading Toggle Bits DQ6/DQ2 ............................................... 32 DQ5: Exceeded Timing Limits ................................................ 32 DQ3: Sector Erase Timer ....................................................... 32 Table 11. Write Operation Status ................................................... 33 VersatileI/O™ (VIO) Control .................................................... 10 Requirements for Reading Array Data ................................... 10 Writing Commands/Command Sequences ............................ 11 Accelerated Program Operation ......................................................11 Autoselect Functions .......................................................................11 Absolute Maximum Ratings . . . . . . . . . . . . . . . . 34 Figure 8. Maximum Negative Overshoot Waveform ..................... 34 Figure 9. Maximum Positive Overshoot Waveform....................... 34 Operating Ranges . . . . . . . . . . . . . . . . . . . . . . . . 34 DC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 35 Figure 10. ICC1 Current vs. Time (Showing Active and Automatic Sleep Currents) ........................................... 36 Figure 11. Typical ICC1 vs. Frequency ............................................ 36 Standby Mode ........................................................................ 11 Automatic Sleep Mode ........................................................... 11 RESET#: Hardware Reset Pin ............................................... 11 Output Disable Mode .............................................................. 12 Table 2. Sector Address Table ........................................................12 Test Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Figure 12. Test Setup.................................................................... 37 Table 12. Test Specifications ......................................................... 37 Autoselect Mode ..................................................................... 16 Table 3. Autoselect Codes, (High Voltage Method) ......................16 Key to Switching Waveforms. . . . . . . . . . . . . . . . 37 Figure 13. Input Waveforms and Measurement Levels...................................................................... 37 Sector Group Protection and Unprotection ............................. 17 Table 4. Sector Group Protection/Unprotection Address Table .....17 Write Protect (WP#) ................................................................ 18 Temporary Sector Group Unprotect ....................................... 18 Figure 1. Temporary Sector Group Unprotect Operation................ 18 Figure 2. In-System Sector Group Protect/Unprotect Algorithms ... 19 AC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 38 Read-Only Operations ........................................................... 38 Figure 14. Read Operation Timings ............................................... 38 Hardware Reset (RESET#) .................................................... 39 Figure 15. Reset Timings ............................................................... 39 SecSi™ (Secured Silicon) Sector Flash Memory Region ....... 20 Table 5. SecSi Sector Contents ......................................................20 Figure 3. SecSi Sector Protect Verify.............................................. 21 Erase and Program Operations .............................................. 40 Figure 16. Program Operation Timings.......................................... Figure 17. Accelerated Program Timing Diagram.......................... Figure 18. Chip/Sector Erase Operation Timings .......................... Figure 19. Data# Polling Timings (During Embedded Algorithms)...................................................... Figure 20. Toggle Bit Timings (During Embedded Algorithms)...................................................... Figure 21. DQ2 vs. DQ6................................................................. 41 41 42 43 44 44 Hardware Data Protection ...................................................... 21 Low VCC Write Inhibit .......................................................................21 Write Pulse “Glitch” Protection ........................................................21 Logical Inhibit ..................................................................................21 Power-Up Write Inhibit ....................................................................21 Common Flash Memory Interface (CFI) . . . . . . . 21 Table 6. CFI Query Identification String .......................................... 22 Table 7. System Interface String..................................................... 22 Table 8. Device Geometry Definition .............................................. 22 Table 9. Primary Vendor-Specific Extended Query ........................ 24 Temporary Sector Unprotect .................................................. 45 Figure 22. Temporary Sector Group Unprotect Timing Diagram ... 45 Figure 23. Sector Group Protect and Unprotect Timing Diagram .. 46 Command Definitions . . . . . . . . . . . . . . . . . . . . . 24 Reading Array Data ................................................................ 24 Reset Command ..................................................................... 25 Autoselect Command Sequence ............................................ 25 Enter SecSi Sector/Exit SecSi Sector Command Sequence .. 25 Word Program Command Sequence ..................................... 25 Unlock Bypass Command Sequence ..............................................26 Figure 4. Program Operation .......................................................... 26 Alternate CE# Controlled Erase and Program Operations ..... 47 Figure 24. Alternate CE# Controlled Write (Erase/Program) Operation Timings .............................................. 48 Chip Erase Command Sequence ........................................... 26 Sector Erase Command Sequence ........................................ 27 Erase Suspend/Erase Resume Commands ........................... 27 Figure 5. Erase Operation............................................................... 28 Command Definitions ............................................................. 29 Table 10. Command Definitions...................................................... 29 Erase And Programming Performance . . . . . . . 49 Latchup Characteristics . . . . . . . . . . . . . . . . . . . . 49 TSOP & FBGA Pin Capacitance. . . . . . . . . . . . . . 49 Data Retention. . . . . . . . . . . . . . . . . . . . . . . . . . . . 49 FBE063—63-Ball Fine-Pitch Ball Grid Array (FBGA) 11 x 12 mm package ................................................. 50 LAA064–64-Ball Fortified Ball Grid Array (Fortified BGA) 13 x 11 mm package ........................................................................... 51 TS 048—48-Pin Standard TSOP ............................................ 52 Revision Summary . . . . . . . . . . . . . . . . . . . . . . . . 53 Write Operation Status . . . . . . . . . . . . . . . . . . . . . 30 June 14, 2005 Am29LV641G 6 ADVANCE INFORMATION PRODUCT SELECTOR GUIDE Part Number Speed Option Max Access Time (ns) CE# Access Time (ns) OE# Access Time (ns) Note: See “AC Characteristics” for full specifications. Regulated Voltage Range VCC = 3.0–3.6 V Standard Voltage Range VCC = 2.7–3.6 V 55 55 35 55R 70 70 70 35 Am29LV641G BLOCK DIAGRAM DQ15–DQ0 VCC VSS RESET# Erase Voltage Generator VIO Input/Output Buffers Sector Switches WE# WP# ACC RY/BY# State Control Command Register PGM Voltage Generator Chip Enable Output Enable Logic STB Data Latch CE# OE# STB VCC Detector Timer Address Latch Y-Decoder Y-Gating X-Decoder Cell Matrix A21–A0 7 Am29LV641G June 14, 2005 ADVANCE INFORMATION CONNECTION DIAGRAMS A15 A14 A13 A12 A11 A10 A9 A8 A21 A20 WE# RESET# ACC WP# A19 A18 A17 A7 A6 A5 A4 A3 A2 A1 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48-Pin Standard TSOP 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 A16 VIO VSS DQ15 DQ7 DQ14 DQ6 DQ13 DQ5 DQ12 DQ4 VCC DQ11 DQ3 DQ10 DQ2 DQ9 DQ1 DQ8 DQ0 OE# VSS CE# A0 A16 VIO VSS DQ15 DQ7 DQ14 DQ6 DQ13 DQ5 DQ12 DQ4 VCC DQ11 DQ3 DQ10 DQ2 DQ9 DQ1 DQ8 DQ0 OE# VSS CE# A0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48-Pin Reverse TSOP 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 A15 A14 A13 A12 A11 A10 A9 A8 A21 A20 WE# RESET# ACC WP# A19 A18 A17 A7 A6 A5 A4 A3 A2 A1 June 14, 2005 Am29LV641G 8 ADVANCE INFORMATION CONNECTION DIAGRAMS A8 NC A7 NC B8 NC B7 NC C7 A13 C6 A9 C5 WE# C4 RY/BY# C3 A7 D7 A12 D6 A8 D5 RESET# D4 ACC D3 A17 D2 A4 63-Ball FBGA Top View, Balls Facing Down L8 NC* M8 NC* M7 NC* E7 A14 E6 A10 E5 A21 E4 A18 E3 A6 E2 A2 F7 A15 F6 A11 F5 A19 F4 A20 F3 A5 F2 A1 G7 A16 G6 DQ7 G5 DQ5 G4 DQ2 G3 DQ0 G2 A0 H7 VIO H6 DQ14 H5 DQ12 H4 DQ10 H3 DQ8 H2 CE# J7 DQ15 J6 DQ13 J5 VCC J4 DQ11 J3 DQ9 J2 OE# K7 VSS K6 DQ6 K5 DQ4 K4 DQ3 K3 DQ1 K2 VSS L7 NC* A2 NC* A1 NC* B1 C2 A3 L2 NC* L1 M2 NC* M1 NC* * Balls are shorted together via the substrate but not connected to the die. NC* NC* 9 Am29LV641G June 14, 2005 ADVANCE INFORMATION CONNECTION DIAGRAMS 64-Ball Fortified BGA Top View, Balls Facing Down A8 RFU A7 A13 A6 A9 A5 WE# A4 B8 RFU B7 A12 B6 A8 B5 RESET# B4 C8 RFU C7 A14 C6 A10 C5 A21 C4 A18 C3 A6 C2 A2 C1 RFU D8 VIO D7 A15 D6 A11 D5 A19 D4 A20 D3 A5 D2 A1 D1 RFU E8 VSS E7 A16 E6 DQ7 E5 DQ5 E4 DQ2 E3 DQ0 E2 A0 E1 RFU F8 RFU F7 BYTE# F6 DQ14 F5 DQ12 F4 DQ10 F3 DQ8 F2 CE# F1 VIO G8 RFU G7 DQ15 G6 DQ13 G5 VCC G4 DQ11 G3 DQ9 G2 OE# G1 RFU H8 RFU H7 VSS H6 DQ6 H5 DQ4 H4 DQ3 H3 DQ1 H2 VSS H1 RFU RY/BY# WP#/ACC A3 A7 A2 A3 A1 RFU B3 A17 B2 A4 B1 RFU Special Package Handling Instructions Special handling is required for Flash Memory products in molded packages (TSOP and BGA) The package and/or data integrity may be compromised if the package body is exposed to temperatures above 150°C for prolonged periods of time. June 14, 2005 Am29LV641G 10 ADVANCE INFORMATION PIN DESCRIPTION A21–A0 = 22 Addresses inputs DQ15–DQ0 = 16 Data inputs/outputs CE# OE# WE# WP# ACC RY/BY# RESET# VCC = Chip Enable input = Output Enable input = Write Enable input LOGIC SYMBOL 22 A21–A0 CE# OE# WE# DQ15–DQ0 16 = Hardware Write Protect input = Acceleration Input = Ready/Busy output = Hardware Reset Pin input = 3.0 volt-only single power supply (see Product Selector Guide for speed options and voltage supply tolerances) = Output Buffer power = Device Ground = Pin Not Connected Internally WP# ACC RESET# VIO RY/BY# VIO VSS NC Note:WP#/ACC functionality is multiplexed for Am29LV641GH/L devices. RY/BY# available only for Am29LV640GU devices. 11 Am29LV641G June 14, 2005 ADVANCE INFORMATION ORDERING INFORMATION Standard Products AMD standard products are available in several packages and operating ranges. The order number (Valid Combination) is formed by a combination of the following: Am29LV641G H 55R WH I TEMPERATURE RANGE I = Industrial (–40°C to +85°C) PACKAGE TYPE E = 48-Pin Thin Small Outline Package (TSOP) Standard Pinout (TS 048) F = 48-Pin Thin Small Outline Package (TSOP) Reverse Pinout (TSR048) WH = 63-Ball Fine-Pitch Ball Grid Array (FBGA) 0.80 mm pitch, 11 x 12 mm package (FBE063) PC = 64-Ball Fine-Pitch Ball Grid Array (Fortified BGA) 1.0 mm pitch, 13 x 11 mm package (LAA064) SPEED OPTION See Product Selector Guide and Valid Combinations SECTOR ARCHITECTURE AND SECTOR WRITE PROTECTION (WP# = 0) H = Uniform sector device, highest address sector protected L = Uniform sector device, lowest address sector protected DEVICE NUMBER/DESCRIPTION Am29LV641G 64 Megabit (4 M x 16-Bit) CMOS Uniform Sector Flash Memory with VersatileIO™ Control 3.0 Volt-only Read, Program, and Erase Valid Combinations for TSOP and SSOP Packages Am29LV641GH73, Am29LV641GL73 Am29LV641GH53R, Am29LV641GL53R Valid Combinations for FBGA Packages Speed/VIO Range 70 ns VIO = 2.7 V – 3.6 V 55 ns VIO = 3.0 V – 3.6 V Order Number Am29LV640GU53R WHI Am29LV640GU73 Package Marking L640GU53R Speed/ VIO Range 55ns VIO = 3.0V – 3.6 V 70 ns VIO = 2.7 V – 3.6 V 55 ns VIO = 3.0 V – 3.6 V 70 ns VIO = 2.7 V – 3.6 V EI, FI Marking Converstion For the Am29LV641GH/L/AmLV640GU Enhanced-VIO device, the last digit of the speed indicator specifies VIO range. Speed grades ending in 3 (e.g. 93, 103, etc.) indicate a 3 Volt VIO range; speed grades ending in 8 (e.g. 98, 108, etc.) indicate a 1.8 V VIO range. L640GU73V I Am29LV640GU53R PCI Am29LV640GU73 L640GU53N L640GU73P Valid Combinations Valid Combinations list configurations planned to be supported in volume for this device. Consult the local AMD sales office to confirm availability of specific valid combinations and to check on newly released combinations. June 14, 2005 Am29LV641G 12 ADVANCE INFORMATION DEVICE BUS OPERATIONS This section describes the requirements and use of the device bus operations, which are initiated through the internal command register. The command register itself does not occupy any addressable memory location. The register is a latch used to store the commands, along with the address and data information needed to execute the command. The contents of the Table 1. Operation Read Write (Program/Erase) Accelerated Program Standby Output Disable Reset Sector Group Protect (Note 2) Sector Group Unprotect (Note 2) Temporary Sector Group Unprotect CE# L L L VCC ± 0.3 V L X L L X OE# L H H X H X H H X register serve as inputs to the internal state machine. The state machine outputs dictate the function of the device. Table 1 lists the device bus operations, the inputs and control levels they require, and the resulting output. The following subsections describe each of these operations in further detail. Device Bus Operations RESET# H H H VCC ± 0.3 V H L VID VID VID ACC Addresses (Note 2) AIN AIN AIN X X X SA, A6 = L, A1 = H, A0 = L SA, A6 = H, A1 = H, A0 = L AIN DQ15– DQ0 DOUT (Note 4) (Note 4) High-Z High-Z High-Z (Note 4) (Note 4) (Note 4) WE# H L L X H X L L X X X VHH H X X X X X Legend: L = Logic Low = VIL, H = Logic High = VIH, VID = 8.5–12.5 V, VHH = 11.5–12.5 V, X = Don’t Care, SA = Sector Address, AIN = Address In, DIN = Data In, DOUT = Data Out Notes: 1. Addresses are A21:A0. Sector addresses are A21:A15. 2. The sector protect and sector unprotect functions may also be implemented via programming equipment. See the “Sector Group Protection and Unprotection” section. 3. All sectors are unprotected when shipped from the factory (The SecSi Sector may be factory protected depending on version ordered.) 4. DIN or DOUT as required by command sequence, data polling, or sector protect algorithm (see Figure 2). VersatileI/O™ (VIO) Control The VersatileI/O (VIO) control allows the host system to set the voltage levels that the device generates at its data outputs and the voltages tolerated at its data inputs to the same voltage level that is asserted on the VIO pin. This allows the device to operate in 1.8 V or 3 V system environment as required. For example, a VI/O of 1.65–1.95 volts allows for I/O at the 3 volt level, driving and receiving signals to and from other 3 V devices on the same bus. Requirements for Reading Array Data To read array data from the outputs, the system must drive the CE# and OE# pins to VIL. CE# is the power control and selects the device. OE# is the output control and gates array data to the output pins. WE# should remain at VIH. The internal state machine is set for reading array data upon device power-up, or after a hardware reset. This ensures that no spurious alteration of the memory content occurs during the power transition. No command is necessary in this mode to obtain array data. Standard microprocessor read cycles that assert valid addresses on the device address inputs produce valid data on the device data outputs. The device remains 13 Am29LV641G June 14, 2005 ADVANCE INFORMATION enabled for read access until the command register contents are altered. See “Requirements for Reading Array Data” for more information. Refer to the AC Read-Only Operations table for timing specifications and to Figure 14 for the timing diagram. ICC1 i n the DC Characteristics table represents the active current specification for reading array data. Standby Mode When the system is not reading or writing to the device, it can place the device in the standby mode. In this mode, current consumption is greatly reduced, and the outputs are placed in the high impedance state, independent of the OE# input. The device enters the CMOS standby mode when the CE# and RESET# pins are both held at VCC ± 0.3 V. (Note that this is a more restricted voltage range than VIH.) If CE# and RESET# are held at VIH, but not within VCC ± 0.3 V, the device will be in the standby mode, but the standby current will be greater. The device requires standard access time (t CE ) for read access when the device is in either of these standby modes, before it is ready to read data. If the device is deselected during erasure or programming, the device draws active current until the operation is completed. I CC3 in the DC Characteristics table represents the standby current specification. Writing Commands/Command Sequences To write a command or command sequence (which includes programming data to the device and erasing sectors of memory), the system must drive WE# and CE# to VIL, and OE# to VIH. The device features an Unlock Bypass mode to facilitate faster programming. Once the device enters the Unlock Bypass mode, only two write cycles are required to program a word, instead of four. The “Word Program Command Sequence” section has details on programming data to the device using both standard and Unlock Bypass command sequences. An erase operation can erase one sector, multiple sectors, or the entire device. Table 2 indicates the address space that each sector occupies. ICC2 in the DC Characteristics table represents the active current specification for the write mode. The AC Characteristics section contains timing specification tables and timing diagrams for write operations. Accelerated Program Operation The device offers accelerated program operations through the ACC function. This function is primarily intended to allow faster manufacturing throughput during system production. If the system asserts VHH on this pin, the device automatically enters the aforementioned Unlock Bypass mode, temporarily unprotects any protected sectors, and uses the higher voltage on the pin to reduce the time required for program operations. The system would use a two-cycle program command sequence as required by the Unlock Bypass mode. Removing VHH from the ACC pin returns the device to normal operation. Note that the ACC pin must not be at VHH for operations other than accelerated programming, or device damage may result. Autoselect Functions If the system writes the autoselect command sequence, the device enters the autoselect mode. The system can then read autoselect codes from the internal register (which is separate from the memory array) on DQ7–DQ0. Standard read cycle timings apply in this mode. Refer to the Autoselect Mode and Autoselect Command Sequence sections for more information. June 14, 2005 Automatic Sleep Mode The automatic sleep mode minimizes Flash device energy consumption. The device automatically enables this mode when addresses remain stable for t ACC + 30 ns. The automatic sleep mode is independent of the CE#, WE#, and OE# control signals. Standard address access timings provide new data when addresses are changed. While in sleep mode, output data is latched and always available to the system. I CC4 in the DC Characteristics table represents the automatic sleep mode current specification. RESET#: Hardware Reset Pin The RESET# pin provides a hardware method of resetting the device to reading array data. When the RESET# pin is driven low for at least a period of tRP, the device immediately terminates any operation in progress, tristates all output pins, and ignores all read/write commands for the duration of the RESET# pulse. The device also resets the internal state machine to reading array data. The operation that was interrupted should be reinitiated once the device is ready to accept another command sequence, to ensure data integrity. Current is reduced for the duration of the RESET# pulse. When RESET# is held at VSS±0.3 V, the device draws CMOS standby current (ICC4). If RESET# is held at VIL but not within VSS±0.3 V, the standby current will be greater. The RESET# pin may be tied to the system reset circuitry. A system reset would thus also reset the Flash memory, enabling the system to read the boot-up firmware from the Flash memory. Am29LV641G 14 ADVANCE INFORMATION Refer to the AC Characteristics tables for RESET# parameters and to Figure 15 for the timing diagram. Output Disable Mode When the OE# input is at VIH, output from the device is disabled. The output pins are placed in the high impedance state. Table 2. Sector SA0 SA1 SA2 SA3 SA4 SA5 SA6 SA7 SA8 SA9 SA10 SA11 SA12 SA13 SA14 SA15 SA16 SA17 SA18 SA19 SA20 SA21 SA22 SA23 SA24 SA25 SA26 SA27 SA28 SA29 SA30 A21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 A20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 A19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 A18 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 A17 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 Sector Address Table A16 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 A15 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 8-bit Address Range (in hexadecimal) 000000–00FFFF 010000–01FFFF 020000–02FFFF 030000–03FFFF 040000–04FFFF 050000–05FFFF 060000–06FFFF 070000–07FFFF 080000–08FFFF 090000–09FFFF 0A0000–0AFFFF 0B0000–0BFFFF 0C0000–0CFFFF 0D0000–0DFFFF 0E0000–0EFFFF 0F0000–0FFFFF 100000–10FFFF 110000–11FFFF 120000–12FFFF 130000–13FFFF 140000–14FFFF 150000–15FFFF 160000–16FFFF 170000–17FFFF 180000–18FFFF 190000–19FFFF 1A0000–1AFFFF 1B0000–1BFFFF 1C0000–1CFFFF 1D0000–1DFFFF 1E0000–1EFFFF 16-bit Address Range (in hexadecimal) 000000–007FFF 008000–00FFFF 010000–017FFF 018000–01FFFF 020000–027FFF 028000–02FFFF 030000–037FFF 038000–03FFFF 040000–047FFF 048000–04FFFF 050000–057FFF 058000–05FFFF 060000–067FFF 068000–06FFFF 070000–077FFF 078000–07FFFF 080000–087FFF 088000–08FFFF 090000–097FFF 098000–09FFFF 0A0000–0A7FFF 0A8000–0AFFFF 0B0000–0B7FFF 0B8000–0BFFFF 0C0000–0C7FFF 0C8000–0CFFFF 0D0000–0D7FFF 0D8000–0DFFFF 0E0000–0E7FFF 0E8000–0EFFFF 0F0000–0F7FFF 15 Am29LV641G June 14, 2005 ADVANCE Table 2. Sector SA31 SA32 SA33 SA34 SA35 SA36 SA37 SA38 SA39 SA40 SA41 SA42 SA43 SA44 SA45 SA46 SA47 SA48 SA49 SA50 SA51 SA52 SA53 SA54 SA55 SA56 SA57 SA58 SA59 SA60 SA61 SA62 SA63 SA64 SA65 A21 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 A20 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 A19 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 A18 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 INFORMATION Sector Address Table (Continued) A17 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 A16 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 A15 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 8-bit Address Range (in hexadecimal) 1F0000–1FFFFF 200000–20FFFF 210000–21FFFF 220000–22FFFF 230000–23FFFF 240000–24FFFF 250000–25FFFF 260000–26FFFF 270000–27FFFF 280000–28FFFF 290000–29FFFF 2A0000–2AFFFF 2B0000–2BFFFF 2C0000–2CFFFF 2D0000–2DFFFF 2E0000–2EFFFF 2F0000–2FFFFF 300000–30FFFF 310000–31FFFF 320000–32FFFF 330000–33FFFF 340000–34FFFF 350000–35FFFF 360000–36FFFF 370000–37FFFF 380000–38FFFF 390000–39FFFF 3A0000–3AFFFF 3B0000–3BFFFF 3C0000–3CFFFF 3D0000–3DFFFF 3E0000–3EFFFF 3F0000–3FFFFF 400000–40FFFF 410000–41FFFF 16-bit Address Range (in hexadecimal) 0F8000–0FFFFF 100000–107FFF 108000–10FFFF 110000–117FFF 118000–11FFFF 120000–127FFF 128000–12FFFF 130000–137FFF 138000–13FFFF 140000–147FFF 148000–14FFFF 150000–157FFF 158000–15FFFF 160000–167FFF 168000–16FFFF 170000–177FFF 178000–17FFFF 180000–187FFF 188000–18FFFF 190000–197FFF 198000–19FFFF 1A0000–1A7FFF 1A8000–1AFFFF 1B0000–1B7FFF 1B8000–1BFFFF 1C0000–1C7FFF 1C8000–1CFFFF 1D0000–1D7FFF 1D8000–1DFFFF 1E0000–1E7FFF 1E8000–1EFFFF 1F0000–1F7FFF 1F8000–1FFFFF 200000–207FFF 208000–20FFFF June 14, 2005 Am29LV641G 16 ADVANCE Table 2. Sector SA66 SA67 SA68 SA69 SA70 SA71 SA72 SA73 SA74 SA75 SA76 SA77 SA78 SA79 SA80 SA81 SA82 SA83 SA84 SA85 SA86 SA87 SA88 SA89 SA90 SA91 SA92 SA93 SA94 SA95 SA96 SA97 SA98 SA99 SA100 A21 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 A20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 A19 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 A18 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 INFORMATION Sector Address Table (Continued) A17 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 A16 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 A15 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 8-bit Address Range (in hexadecimal) 420000–42FFFF 430000–43FFFF 440000–44FFFF 450000–45FFFF 460000–46FFFF 470000–47FFFF 480000–48FFFF 490000–49FFFF 4A0000–4AFFFF 4B0000–4BFFFF 4C0000–4CFFFF 4D0000–4DFFFF 4E0000–4EFFFF 4F0000–4FFFFF 500000–50FFFF 510000–51FFFF 520000–52FFFF 530000–53FFFF 540000–54FFFF 550000–55FFFF 560000–56FFFF 570000–57FFFF 580000–58FFFF 590000–59FFFF 5A0000–5AFFFF 5B0000–5BFFFF 5C0000–5CFFFF 5D0000–5DFFFF 5E0000–5EFFFF 5F0000–5FFFFF 600000–60FFFF 610000–61FFFF 620000–62FFFF 630000–63FFFF 640000–64FFFF 16-bit Address Range (in hexadecimal) 210000–217FFF 218000–21FFFF 220000–227FFF 228000–22FFFF 230000–237FFF 238000–23FFFF 240000–247FFF 248000–24FFFF 250000–257FFF 258000–25FFFF 260000–267FFF 268000–26FFFF 270000–277FFF 278000–27FFFF 280000–287FFF 288000–28FFFF 290000–297FFF 298000–29FFFF 2A0000–2A7FFF 2A8000–2AFFFF 2B0000–2B7FFF 2B8000–2BFFFF 2C0000–2C7FFF 2C8000–2CFFFF 2D0000–2D7FFF 2D8000–2DFFFF 2E0000–2E7FFF 2E8000–2EFFFF 2F0000–2F7FFF 2F8000–2FFFFF 300000–307FFF 308000–30FFFF 310000–317FFF 318000–31FFFF 320000–327FFF 17 Am29LV641G June 14, 2005 ADVANCE Table 2. Sector SA101 SA102 SA103 SA104 SA105 SA106 SA107 SA108 SA109 SA110 SA111 SA112 SA113 SA114 SA115 SA116 SA117 SA118 SA119 SA120 SA121 SA122 SA123 SA124 SA125 SA126 SA127 A21 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 A20 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 A19 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 A18 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 INFORMATION Sector Address Table (Continued) A17 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 A16 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 A15 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 8-bit Address Range (in hexadecimal) 650000–65FFFF 660000–66FFFF 670000–67FFFF 680000–68FFFF 690000–69FFFF 6A0000–6AFFFF 6B0000–6BFFFF 6C0000–6CFFFF 6D0000–6DFFFF 6E0000–6EFFFF 6F0000–6FFFFF 700000–70FFFF 710000–71FFFF 720000–72FFFF 730000–73FFFF 740000–74FFFF 750000–75FFFF 760000–76FFFF 770000–77FFFF 780000–78FFFF 790000–79FFFF 7A0000–7AFFFF 7B0000–7BFFFF 7C0000–7CFFFF 7D0000–7DFFFF 7E0000–7EFFFF 7F0000–7FFFFF 16-bit Address Range (in hexadecimal) 328000–32FFFF 330000–337FFF 338000–33FFFF 340000–347FFF 348000–34FFFF 350000–357FFF 358000–35FFFF 360000–367FFF 368000–36FFFF 370000–377FFF 378000–37FFFF 380000–387FFF 388000–38FFFF 390000–397FFF 398000–39FFFF 3A0000–3A7FFF 3A8000–3AFFFF 3B0000–3B7FFF 3B8000–3BFFFF 3C0000–3C7FFF 3C8000–3CFFFF 3D0000–3D7FFF 3D8000–3DFFFF 3E0000–3E7FFF 3E8000–3EFFFF 3F0000–3F7FFF 3F8000–3FFFFF Note: All sectors are 32 Kwords in size. June 14, 2005 Am29LV641G 18 ADVANCE INFORMATION Table 3. In addition, when verifying sector protection, the sector address must appear on the appropriate highest order address bits (see Table 2). Table 3 shows the remaining address bits that are don’t care. When all necessary bits have been set as required, the programming equipment may then read the corresponding identifier code on DQ7–DQ0. To access the autoselect codes in-system, the host system can issue the autoselect command via the command register, as shown in Table 10. This method does not require V ID. Refer to the Autoselect Command Sequence section for more information. Autoselect Mode The autoselect mode provides manufacturer and device identification, and sector protection verification, through identifier codes output on DQ7–DQ0. This mode is primarily intended for programming equipment to automatically match a device to be programmed with its corresponding programm ing algorithm. However, the autoselect codes can also be accessed in-system through the command register. When using programming equipment, the autoselect mode requires VID (8.5 V to 12.5 V) on address pin A9. Address pins A6, A1, and A0 must be as shown in Table 3. Autoselect Codes, (High Voltage Method) A21 to A15 X X X A14 to A10 X X X A8 to A7 X X A7 to A0 — — 0Eh A5 to A2 X X DQ15 to DQ0 XX01h 22D7h 220Fh Description Manufacturer ID: AMD Autoselect Device Code Read Cycle 1 Read Cycle 2 CE# L L L OE# L L L WE# H H H A9 VID VID VID A6 L L L A1 L L L A0 L H H Read Cycle 3 L L H X X VID 0Fh L L H XX00h Sector Protection Verification SecSi™ Sector Indicator Bit (DQ7) SecSi™ Sector Indicator Bit (DQ7), WP# protects highest address sector SecSi™ Sector Indicator Bit (DQ7), WP# protects lowest address sector L L L L H H SA X X X VID VID X X — — L L X X H H L H 01h (protected), 00h (unprotected) 98h (factory locked), 18h (not factory locked) XX98h (factory locked), XX18h (not factory locked) XX88h (factory locked), XX08h (not factory locked) L L H X X VID X — L X H H L L H X X VID X — L X H H Legend: L = Logic Low = VIL, H = Logic High = VIH, SA = Sector Address, X = Don’t care. Note: SecSi™ Sector Indicator Bit (DQ7) exist only in the Am29LV641GH/L devices. 19 Am29LV641G June 14, 2005 ADVANCE INFORMATION Table 4. Sector Group Protection/Unprotection Address Table A21–A17 00000 00001 00010 00011 00100 00101 00110 00111 01000 01001 01010 01011 01100 01101 01110 01111 10000 10001 10010 10011 10100 10101 10110 10111 11000 11001 11010 11011 11100 11101 11110 11111 Sector Group Protection and Unprotection The hardware sector group protection feature disables both program and erase operations in any sector group. In this device, a sector group consists of four adjacent sectors that are protected or unprotected at the same time (see Table 4). The hardware sector group unprotection feature re-enables both program and erase operations in previously protected sector groups. Sector group protection/unprotection can be implemented via two methods. The primary method requires VID on the RESET# pin only, and can be implemented either in-system or via programming equipment. Figure 2 shows the algorithms and Figure 23 shows the timing diagram. This method uses standard microprocessor bus cycle timing. For sector group unprotect, all unprotected sector groups must first be protected prior to the first sector group unprotect write cycle. The alternate method intended only for programming equipment requires VID on address pin A9 and OE#. This method is compatible with programmer routines written for earlier 3.0 volt-only AMD flash devices. Publication number 22367 contains further details; contact an AMD representative to request a copy. The device is shipped with all sector groups unprotected. AMD offers the option of programming and protecting sector groups at its factory prior to shipping the device through AMD’s ExpressFlash™ Service. Contact an AMD representative for details. It is possible to determine whether a sector group is protected or unprotected. See the Autoselect Mode section for details. Sector Group SA0–SA3 SA4–SA7 SA8–SA11 SA12–SA15 SA16–SA19 SA20–SA23 SA24–SA27 SA28–SA31 SA32–SA35 SA36–SA39 SA40–SA43 SA44–SA47 SA48–SA51 SA52–SA55 SA56–SA59 SA60–SA63 SA64–SA67 SA68–SA71 SA72–SA75 SA76–SA79 SA80–SA83 SA84–SA87 SA88–SA91 SA92–SA95 SA96–SA99 SA100–SA103 SA104–SA107 SA108–SA111 SA112–SA115 SA116–SA119 SA120–SA123 SA124–SA127 Note: All sector groups are 128 Kwords in size. June 14, 2005 Am29LV641G 20 ADVANCE INFORMATION Write Protect (WP#) The Write Protect function provides a hardware method of protecting the first or last sector without using VID. If the system asserts VIL o n the WP# pin, the device disables program and erase functions in the first or last sector independently of whether those sectors were protected or unprotected using the method described in “Sector Group Protection and Unprotection”. Note that if WP# is at V IL w hen the device is in the standby mode, the maximum input load current is increased. See the table in “DC Characteristics”. If the system asserts VIH on the WP# pin, the device reverts to whether the first or last sector was previously set to be protected or unprotected using the method described in “Sector Group Protection and Unprotection”. START RESET# = VID (Note 1) Perform Erase or Program Operations RESET# = VIH Temporary Sector Group Unprotect Completed (Note 2) Temporary Sector Group Unprotect (Note: In this device, a sector group consists of four adjacent sectors that are protected or unprotected at the same time (see Table 4)). Notes: 1. All protected sector groups unprotected (If WP# = VIL, the first or last sector will remain protected). 2. All previously protected sector groups are protected once again. This feature allows temporary unprotection of previously protected sector groups to change data in-system. The Sector Group Unprotect mode is activated by setting the RESET# pin to VID (8.5 V – 12.5 V). During this mode, formerly protected sector groups can be programmed or erased by selecting the sector group addresses. Once V ID i s removed from the RESET# pin, all the previously protected sector groups are protected again. Figure 1 shows the algorithm, and Figure 22 shows the timing diagrams, for this feature. Figure 1. Temporary Sector Group Unprotect Operation 21 Am29LV641G June 14, 2005 ADVANCE INFORMATION START PLSCNT = 1 RESET# = VID Wait 1 μs Protect all sector groups: The indicated portion of the sector group protect algorithm must be performed for all unprotected sector groups prior to issuing the first sector group unprotect address START PLSCNT = 1 RESET# = VID Wait 1 μs Temporary Sector Group Unprotect Mode No First Write Cycle = 60h? First Write Cycle = 60h? No Temporary Sector Group Unprotect Mode Yes Set up sector group address No Yes All sector groups protected? Yes Set up first sector group address Sector Group Unprotect: Write 60h to sector group address with A6 = 1, A1 = 1, A0 = 0 Reset PLSCNT = 1 Wait 15 ms Sector Group Protect: Write 60h to sector group address with A6 = 0, A1 = 1, A0 = 0 Wait 150 µs Increment PLSCNT Verify Sector Group Protect: Write 40h to sector group address twith A6 = 0, A1 = 1, A0 = 0 Read from sector group address with A6 = 0, A1 = 1, A0 = 0 No No PLSCNT = 25? Data = 01h? Increment PLSCNT Verify Sector Group Unprotect: Write 40h to sector group address with A6 = 1, A1 = 1, A0 = 0 Yes Yes Protect another sector group? No Remove VID from RESET# Yes Read from sector group address with A6 = 1, A1 = 1, A0 = 0 No Set up next sector group address Data = 00h? No PLSCNT = 1000? Yes Device failed Yes Device failed Write reset command Last sector group verified? Yes Remove VID from RESET# No Sector Group Protect Algorithm Sector Group Protect complete Sector Group Unprotect Algorithm Write reset command Sector Group Unprotect complete Figure 2. In-System Sector Group Protect/Unprotect Algorithms June 14, 2005 Am29LV641G 22 ADVANCE INFORMATION or following a hardware reset, the device reverts to sending commands to sector SA0. Factory Locked: SecSi Sector Programmed and Protected At the Factory In devices with an ESN, the SecSi Sector is protected when the device is shipped from the factory. The SecSi Sector cannot be modified in any way. A factory locked device has an 8-word random ESN at addresses 000000h–000007h. Customers may opt to have their code programmed by AMD through the AMD ExpressFlash service. The devices are then shipped from AMD’s factory with the SecSi Sector permanently locked. Contact an AMD representative for details on using AMD’s ExpressFlash service. Customer Lockable: SecSi Sector NOT Programmed or Protected At the Factory As an alternative to the factory-locked version, the device may be ordered such that the customer may progra m an d p r ot ec t t he 12 8 - wo rd Se cS i se ct or. Programming and protecting the SecSi Sector must be used with caution since, once protected, there is no procedure available for unprotecting the SecSi Sector area and none of the bits in the SecSi Sector memory space can be modified in any way. The SecSi Sector area can be protected using one of the following procedures: ■ Write the three-cycle Enter SecSi Sector Region command sequence, and then follow the in-system sector protect algorithm as shown in Figure 2, except that RESET# may be at either VIH or VID. This allows in-system protection of the SecSi Sector without raising any device pin to a high voltage. Note that this method is only applicable to the SecSi Sector. ■ Write the three-cycle Enter SecSi Sector Region command sequence, and then use the alternate method of sector protection described in the “Sector Group Protection and Unprotection” section. Once the SecSi Sector is programmed, locked and verified, the system must write the Exit SecSi Sector Region command sequence to return to reading and writing within the remainder of the array. SecSi™ (Secured Silicon) Sector Flash Memory Region The SecSi (Secured Silicon) Sector feature provides a Flash memory region that enables permanent part identification through an Electronic Serial Number (ESN). The SecSi Sector is 128 words in length, and uses a SecSi Sector Indicator Bit (DQ7) to indicate whether or not the SecSi Sector is locked when shipped from the factory. This bit is permanently set at the factory and cannot be changed, which prevents cloning of a factory locked part. This ensures the security of the ESN once the product is shipped to the field. AMD offers the device with the SecSi Sector either fac t or y l ocke d or c u s t om e r l o ck abl e. T he fac tory-locked version is always protected when shipped from the factory, and has the SecSi (Secured Silicon) Sector Indicator Bit permanently set to a “1.” The customer-lockable version is shipped with the SecSi Sector unprotected, allowing customers to utilize that sector in any manner they choose. The customer-lockable version also has the SecSi Sector Indicator Bit permanently set to a “0.” Thus, the SecSi Sector Indicator Bit prevents customer-lockable devices from being used to replace devices that are factory locked. The SecSi sector address space in this device is allocated as follows: Table 5. SecSi Sector Address Range 000000h–000007h 000008h–00007Fh SecSi Sector Contents Customer Lockable Standard ExpressFlash Factory Locked Factory Locked ESN Unavailable ESN or determined by customer Determined by customer Determined by customer *All Uniform Devices (not including Uniform High) such as Am29LV640GU has its Sector starting at address 0. The system accesses the SecSi Sector through a command sequence (see “Enter SecSi Sector/Exit SecSi Sector Command Sequence”). After the system has written the Enter SecSi Sector command sequence, it may read the SecSi Sector by using the addresses normally occupied by the first sector (SA0). This mode of operation continues until the system issues the Exit SecSi Sector command sequence, or until power is removed from the device. On power-up, 23 Am29LV641G June 14, 2005 ADVANCE INFORMATION data protection measures prevent accidental erasure or programming, which might otherwise be caused by spurious system level signals during V CC power-up and power-down transitions, or from system noise. START RESET# = VIH or VID Wait 1 μs Write 60h to any address If data = 00h, SecSi Sector is unprotected. If data = 01h, SecSi Sector is protected. Low VCC Write Inhibit When VCC is less than VLKO, the device does not accept any write cycles. This protects data during VCC power-up and power-down. The command register and all internal program/erase circuits are disabled, and the device resets to the read mode. Subsequent writes are ignored until VCC is greater than VLKO. The system must provide the proper signals to the control pins to prevent unintentional writes when V CC i s greater than VLKO. Write Pulse “Glitch” Protection Remove VIH or VID from RESET# Write 40h to SecSi Sector address with A6 = 0, A1 = 1, A0 = 0 Read from SecSi Sector address with A6 = 0, A1 = 1, A0 = 0 Write reset command SecSi Sector Protect Verify complete Noise pulses of less than 5 ns (typical) on OE#, CE# or WE# do not initiate a write cycle. Logical Inhibit Write cycles are inhibited by holding any one of OE# = VIL, CE# = VIH or WE# = VIH. To initiate a write cycle, CE# and WE# must be a logical zero while OE# is a logical one. Figure 3. SecSi Sector Protect Verify Power-Up Write Inhibit If WE# = CE# = VIL and OE# = V IH during power up, the device does not accept commands on the rising edge of WE#. The internal state machine is automatically reset to the read mode on power-up. Hardware Data Protection The command sequence requirement of unlock cycles for programming or erasing provides data protection against inadvertent writes (refer to Table 10 for command definitions). In addition, the following hardware COMMON FLASH MEMORY INTERFACE (CFI) The Common Flash Interface (CFI) specification outlines device and host system software interrogation handshake, which allows specific vendor-specified software algorithms to be used for entire families of devices. Software support can then be device-independent, JEDEC ID-independent, and forward- and backward-compatible for the specified flash device families. Flash vendors can standardize their existing interfaces for long-term compatibility. This device enters the CFI Query mode when the system writes the CFI Query command, 98h, to address 55h, any time the device is ready to read array data. The system can read CFI information at the addresses given in Tables 6–9. To terminate reading CFI data, the system must write the reset command. The system can also write the CFI query command when the device is in the autoselect mode. The device enters the CFI query mode, and the system can read CFI data at the addresses given in Tables 6–9. The system must write the reset command to return the device to reading array data. For further information, please refer to the CFI Specification and CFI Publication 100, available via the World Wide Web at http://www.amd.com/flash/cfi. Alternatively, contact an AMD representative for copies of these documents. June 14, 2005 Am29LV641G 24 ADVANCE Table 6. Addresses (x16) 10h 11h 12h 13h 14h 15h 16h 17h 18h 19h 1Ah Data 0051h 0052h 0059h 0002h 0000h 0040h 0000h 0000h 0000h 0000h 0000h INFORMATION CFI Query Identification String Description Query Unique ASCII string “QRY” Primary OEM Command Set Address for Primary Extended Table Alternate OEM Command Set (00h = none exists) Address for Alternate OEM Extended Table (00h = none exists) Table 7. Addresses (x16) 1Bh 1Ch 1Dh 1Eh 1Fh 20h 21h 22h 23h 24h 25h 26h Data 0027h 0036h 0000h 0000h 0003h 0000h 000Ah 0000h 0005h 0000h 0002h 0000h System Interface String Description VCC Min. (write/erase) D7–D4: volt, D3–D0: 100 millivolt VCC Max. (write/erase) D7–D4: volt, D3–D0: 100 millivolt VPP Min. voltage (00h = no VPP pin present) VPP Max. voltage (00h = no VPP pin present) Typical timeout per single byte/word write 2N µs Typical timeout for Min. size buffer write 2N µs (00h = not supported) Typical timeout per individual block erase 2N ms Typical timeout for full chip erase 2N ms (00h = not supported) Max. timeout for byte/word write 2N times typical Max. timeout for buffer write 2N times typical Max. timeout per individual block erase 2N times typical Max. timeout for full chip erase 2N times typical (00h = not supported) Table 8. Addresses (x16) 27h 28h 29h 2Ah 2Bh 2Ch 2Dh 2Eh 2Fh 30h Data 0017h 0001h 0000h 0000h 0000h 0002h 0007h 0000h 0020h 0000h Device Geometry Definition Description Device Size = 2N byte Flash Device Interface description (refer to CFI publication 100) Max. number of byte in multi-byte write = 2N (00h = not supported) Number of Erase Block Regions within device Erase Block Region 1 Information (refer to the CFI specification or CFI publication 100) 25 Am29LV641G June 14, 2005 ADVANCE 31h 32h 33h 34h 35h 36h 37h 38h 39h 3Ah 3Bh 3Ch 007Eh 0000h 0000h 0001h 0000h 0000h 0000h 0000h 0000h 0000h 0000h 0000h INFORMATION Erase Block Region 2 Information (refer to CFI publication 100) Erase Block Region 3 Information (refer to CFI publication 100) Erase Block Region 4 Information (refer to CFI publication 100) June 14, 2005 Am29LV641G 26 ADVANCE Table 9. Addresses (x16) 40h 41h 42h 43h 44h Data 0050h 0052h 0049h 0031h 0033h INFORMATION Primary Vendor-Specific Extended Query Description Query-unique ASCII string “PRI” Major version number, ASCII Minor version number, ASCII Address Sensitive Unlock (Bits 1-0) 0 = Required, 1 = Not Required Silicon Revision Number (Bits 5-2) 45h 0004h 46h 47h 48h 49h 4Ah 4Bh 4Ch 4Dh 0002h 0004h 0001h 0004h 0000h 0000h 0000h 00B5h Erase Suspend 0 = Not Supported, 1 = To Read Only, 2 = To Read & Write Sector Protect 0 = Not Supported, X = Number of sectors in per group Sector Temporary Unprotect 00 = Not Supported, 01 = Supported Sector Protect/Unprotect scheme 04 = 29LV800 mode Simultaneous Operation 00 = Not Supported, X = Number of Sectors in Bank Burst Mode Type 00 = Not Supported, 01 = Supported Page Mode Type 00 = Not Supported, 01 = 4 Word Page, 02 = 8 Word Page ACC (Acceleration) Supply Minimum 00h = Not Supported, D7-D4: Volt, D3-D0: 100 mV ACC (Acceleration) Supply Maximum 00h = Not Supported, D7-D4: Volt, D3-D0: 100 mV 00h = Uniform sector device 4Eh 4Fh 00C5h 00XXh COMMAND DEFINITIONS Writing specific address and data commands or sequences into the command register initiates device operations. Table 10 defines the valid register command sequences. Writing incorrect address and data values or writing them in the improper sequence may place the device in an unknown state. A reset command is then required to return the device to reading array data. All addresses are latched on the falling edge of WE# or CE#, whichever happens later. All data is latched on the rising edge of WE# or CE#, whichever happens first. Refer to the AC Characteristics section for timing diagrams. retrieve data. The device is ready to read array data after completing an Embedded Program or Embedded Erase algorithm. After the device accepts an Erase Suspend command, the device enters the erase-suspend-read mode, after which the system can read data from any non-erase-suspended sector. After completing a programming operation in the Erase Suspend mode, the system may once again read array data with the same exception. See the Erase Suspend/Erase Resume Commands section for more information. The system must issue the reset command to return the device to the read (or erase-suspend-read) mode if DQ5 goes high during an active program or erase operation, or if the device is in the autoselect mode. See the next section, Reset Command, for more information. Reading Array Data The device is automatically set to reading array data after device power-up. No commands are required to 27 Am29LV641G June 14, 2005 ADVANCE INFORMATION ■ A read cycle at address XX00h returns the manufacturer code. ■ A read cycle at address XX01h returns the device code. ■ A read cycle to an address containing a sector group address (SA), and the address 02h on A7–A0 in word mode returns 01h if the sector group is protected, or 00h if it is unprotected. (Refer to Table 4 for valid sector addresses). The system must write the reset command to return to the read mode (or erase-suspend-read mode if the device was previously in Erase Suspend). See also Requirements for Reading Array Data in the Device Bus Operations section for more information. The Read-Only Operations table provides the read parameters, and Figure 14 shows the timing diagram. Reset Command Writing the reset command resets the device to the read or erase-suspend-read mode. Address bits are don’t cares for this command. The reset command may be written between the sequence cycles in an erase command sequence before erasing begins. This resets the device to the read mode. Once erasure begins, however, the device ignores reset commands until the operation is complete. The reset command may be written between the sequence cycles in a program command sequence before programming begins. This resets the device to the read mode. If the program command sequence is written while the device is in the Erase Suspend mode, writing the reset command returns the device to the erase-suspend-read mode. Once programming begins, however, the device ignores reset commands until the operation is complete. The reset command may be written between the sequence cycles in an autoselect command sequence. Once in the autoselect mode, the reset command must be written to return to the read mode. If the device entered the autoselect mode while in the Erase Suspend mode, writing the reset command returns the device to the erase-suspend-read mode. If DQ5 goes high during a program or erase operation, writing the reset command returns the device to the read mode (or erase-suspend-read mode if the device was in Erase Suspend). Enter SecSi Sector/Exit SecSi Sector Command Sequence The SecSi Sector region provides a secured data area containing an 8-word random Electronic Serial Number (ESN). The system can access the SecSi Sector region by issuing the three-cycle Enter SecSi Sector command sequence. The device continues to access the SecSi Sector region until the system issues the four-cycle Exit SecSi Sector command sequence. The Exit SecSi Sector command sequence returns the device to normal operation. Table 10 shows the address and data requirements for both command sequences. See also “SecSi ™ ( Secured Silicon) Sector Flash Memory Region” for further information. Word Program Command Sequence Programming is a four-bus-cycle operation. The program command sequence is initiated by writing two unlock write cycles, followed by the program set-up command. The program address and data are written next, which in turn initiate the Embedded Program algorithm. The system is not required to provide further controls or timings. The device automatically provides internally generated program pulses and verifies the programmed cell margin. Table 10 shows the address and data requirements for the word program command sequence. When the Embedded Program algorithm is complete, the device then returns to the read mode and addresses are no longer latched. The system can determine the status of the program operation by using DQ7 or DQ6. Refer to the Write Operation Status section for information on these status bits. Any commands written to the device during the Embedded Program Algorithm are ignored. Note that a hardware reset immediately terminates the program operation. The program command sequence should be reinitiated once the device has returned to the read mode, to ensure data integrity. Programming is allowed in any sequence and across sector boundaries. A b it cannot be programmed Autoselect Command Sequence The autoselect command sequence allows the host system to access the manufacturer and device codes, and determine whether or not a sector is protected. Table 10 shows the address and data requirements. This method is an alternative to that shown in Table 3, which is intended for PROM programmers and requires V ID o n address pin A9. The autoselect command sequence may be written to an address that is either in the read or erase-suspend-read mode. The autoselect command may not be written while the device is actively programming or erasing. The autoselect command sequence is initiated by first writing two unlock cycles. This is followed by a third write cycle that contains the autoselect command. The device then enters the autoselect mode. The system may read at any address any number of times without initiating another autoselect command sequence: June 14, 2005 Am29LV641G 28 ADVANCE INFORMATION from “0” back to a “1.” A ttempting to do so may cause the device to set DQ5 = 1, or cause the DQ7 and DQ6 status bits to indicate the operation was successful. However, a succeeding read will show that the data is still “0.” Only erase operations can convert a “0” to a “1.” Unlock Bypass Command Sequence The unlock bypass feature allows the system to program words to the device faster than using the standard program command sequence. The unlock bypass command sequence is initiated by first writing two unlock cycles. This is followed by a third write cycle containing the unlock bypass command, 20h. The device then enters the unlock bypass mode. A two-cycle unlock bypass program command sequence is all that is required to program in this mode. The first cycle in this sequence contains the unlock bypass program command, A0h; the second cycle contains the program address and data. Additional data is programmed in the same manner. This mode dispenses with the initial two unlock cycles required in the standard program command sequence, resulting in faster total programming time. Table 10 shows the requirements for the command sequence. During the unlock bypass mode, only the Unlock Bypass Program and Unlock Bypass Reset commands are valid. To exit the unlock bypass mode, the system must issue the two-cycle unlock bypass reset command sequence. The first cycle must contain the data 90h. The second cycle must contain the data 00h. The device then returns to the read mode. The device offers accelerated program operations through the ACC pin. When the system asserts VHH on the ACC pin, the device automatically enters the Unlock Bypass mode. The system may then write the two-cycle Unlock Bypass program command sequence. The device uses the higher voltage on the ACC pin to accelerate the operation. N ote that the ACC pin must not be at VHH for operations other than accelerated programming, or device damage may result. Figure 4 illustrates the algorithm for the program operation. Refer to the Erase and Program Operations table in the AC Characteristics section for parameters, and Figure 16 for timing diagrams. START Write Program Command Sequence Embedded Program algorithm in progress Data Poll from System Verify Data? No Yes No Increment Address Last Address? Yes Programming Completed Note: See Table 10 for program command sequence. Figure 4. Program Operation Chip Erase Command Sequence Chip erase is a six bus cycle operation. The chip erase command sequence is initiated by writing two unlock cycles, followed by a set-up command. Two additional unlock write cycles are then followed by the chip erase command, which in turn invokes the Embedded Erase algorithm. The device does not require the system to preprogram prior to erase. The Embedded Erase algorithm automatically preprograms and verifies the entire memory for an all zero data pattern prior to electrical erase. The system is not required to provide any controls or timings during these operations. Table 10 shows the address and data requirements for the chip erase command sequence. 29 Am29LV641G June 14, 2005 ADVANCE INFORMATION When the Embedded Erase algorithm is complete, the device returns to reading array data and addresses are no longer latched. Note that while the Embedded Erase operation is in progress, the system can read data from the non-erasing sector. The system can determine the status of the erase operation by reading DQ7, DQ6, or DQ2 in the erasing sector. Refer to the Write Operation Status section for information on these status bits. Once the sector erase operation has begun, only the Erase Suspend command is valid. All other commands are ignored. However, note that a hardware reset immediately terminates the erase operation. If that occurs, the sector erase command sequence should be reinitiated once the device has returned to reading array data, to ensure data integrity. Figure 5 illustrates the algorithm for the erase operation. Refer to the Erase and Program Operations tables in the AC Characteristics section for parameters, and Figure 18 section for timing diagrams. When the Embedded Erase algorithm is complete, the device returns to the read mode and addresses are no longer latched. The system can determine the status of the erase operation by using DQ7, DQ6 or DQ2. Refer to the Write Operation Status section for information on these status bits. Any commands written during the chip erase operation are ignored. However, note that a hardware reset immediately terminates the erase operation. If that occurs, the chip erase command sequence should be reinitiated once the device has returned to reading array data, to ensure data integrity. Figure 5 illustrates the algorithm for the erase operation. Refer to the Erase and Program Operations tables in the AC Characteristics section for parameters, and Figure 18 section for timing diagrams. Sector Erase Command Sequence Sector erase is a six bus cycle operation. The sector erase command sequence is initiated by writing two unlock cycles, followed by a set-up command. Two additional unlock cycles are written, and are then followed by the address of the sector to be erased, and the sector erase command. Table 10 shows the address and data requirements for the sector erase command sequence. The device does not require the system to preprogram prior to erase. The Embedded Erase algorithm automatically programs and verifies the entire memory for an all zero data pattern prior to electrical erase. The system is not required to provide any controls or timings during these operations. After the command sequence is written, a sector erase time-out of 50 µs occurs. During the time-out period, additional sector addresses and sector erase commands may be written. Loading the sector erase buffer may be done in any sequence, and the number of sectors may be from one sector to all sectors. The time between these additional cycles must be less than 50 µs, otherwise erasure may begin. Any sector erase address and command following the exceeded time-out may or may not be accepted. It is recommended that processor interrupts be disabled during this time to ensure all commands are accepted. The interrupts can be re-enabled after the last Sector Erase command is written. Any command other than S e ct o r E ra se o r E ra s e S u sp en d d u r in g th e time-out period resets the device to the read mode. T he system must rewrite the command sequence and any additional addresses and commands. The system can monitor DQ3 to determine if the sector erase timer has timed out (See the section on DQ3: Sector Erase Timer.). The time-out begins from the rising edge of the final WE# pulse in the command sequence. Erase Suspend/Erase Resume Commands The Erase Suspend command, B0h, allows the system to interrupt a sector erase operation and then read data from, or program data to, any sector not selected for erasure. This command is valid only during the sector erase operation, including the 50 µs time-out period during the sector erase command sequence. The Erase Suspend command is ignored if written during the chip erase operation or Embedded Program algorithm. When the Erase Suspend command is written during the sector erase operation, the device requires a maximum of 20 µs to suspend the erase operation. However, when the Erase Suspend command is written during the sector erase time-out, the device immediately terminates the time-out period and suspends the erase operation. After the erase operation has been suspended, the device enters the erase-suspend-read mode. The system can read data from or program data to any sector not selected for erasure. (The device “erase suspends” all sectors selected for erasure.) Reading at any address within erase-suspended sectors produces status information on DQ7–DQ0. The system can use DQ7, or DQ6 and DQ2 together, to determine if a sector is actively erasing or is erase-suspended. Refer to the Write Operation Status section for information on these status bits. After an erase-suspended program operation is complete, the device returns to the erase-suspend-read mode. The system can determine the status of the program operation using the DQ7 or DQ6 status bits, just as in the standard word program operation. June 14, 2005 Am29LV641G 30 ADVANCE INFORMATION Refer to the Write Operation Status section for more information. In the erase-suspend-read mode, the system can also issue the autoselect command sequence. Refer to the Autoselect Mode and Autoselect Command Sequence sections for details. To resume the sector erase operation, the system must write the Erase Resume command. The address of the erase-suspended sector is required when writing this command. Further writes of the Resume command are ignored. Another Erase Suspend command can be written after the chip has resumed erasing. START Write Erase Command Sequence (Notes 1, 2) Data Poll to Erasing Bank from System Embedded Erase algorithm in progress No Data = FFh? Yes Erasure Completed Notes: 1. See Table 10 for erase command sequence. 2. See the section on DQ3 for information on the sector erase timer. Figure 5. Erase Operation 31 Am29LV641G June 14, 2005 ADVANCE INFORMATION Command Definitions Table 10. Command Sequence (Note 1) Read (Note 6) Reset (Note 7) Autoselect (Note 8) Manufacturer ID Device ID SecSi™ Sector Factory Protect (Note 9) Sector Group Protect Verify (Note 10) Cycles First Addr RA XXX 555 555 555 555 555 555 555 555 XXX XXX 555 555 BA BA 55 Data RD F0 AA AA AA AA AA AA AA AA A0 90 AA AA B0 30 98 PD = Data to be programmed at location PA. Data latches on the rising edge of WE# or CE# pulse, whichever happens first. SA = Address of the sector to be verified (in autoselect mode) or erased. Address bits A21–A15 uniquely select any sector. 2AA 2AA 2AA 2AA 2AA 2AA 2AA 2AA PA XXX 2AA 2AA 55 55 55 55 55 55 55 55 PD 00 55 55 555 555 80 80 555 555 AA AA 2AA 2AA 55 55 555 SA 10 30 555 555 555 555 555 555 555 555 90 90 90 90 88 90 A0 20 XXX PA 00 PD X00 X01 X03 (SA)X02 0001 22E7 (see Note 9) XX00/ XX01 X0E 220F X0F (Note 16) Command Definitions Bus Cycles (Notes 2–5) Third Addr Data Fourth Addr Data Fifth Addr Data Sixth Addr Data Second Addr Data 1 1 4 4 4 4 3 4 4 Enter SecSi Sector Region Exit SecSi Sector Region Program Unlock Bypass Unlock Bypass Program (Note 11) Unlock Bypass Reset (Note 12) Chip Erase Sector Erase Erase Suspend (Note 13) Erase Resume (Note 14) CFI Query (Note 15) 3 2 2 6 6 1 1 1 Legend: X = Don’t care RA = Address of the memory location to be read. RD = Data read from location RA during read operation. PA = Address of the memory location to be programmed. Addresses latch on the falling edge of the WE# or CE# pulse, whichever happens later. Notes: 1. See Table 1 for description of bus operations. 2. 3. 4. 5. 6. 7. All values are in hexadecimal. Except for the read cycle and the fourth cycle of the autoselect command sequence, all bus cycles are write cycles. Data bits DQ15–DQ8 are don’t care in command sequences, except for RD and PD. Unless otherwise noted, address bits A21–A15 are don’t cares. No unlock or command cycles required when device is in read mode. The Reset command is required to return to the read mode (or to the erase-suspend-read mode if previously in Erase Suspend) when the device is in the autoselect mode, or if DQ5 goes high (while the device is providing status information). The fourth cycle of the autoselect command sequence is a read cycle. Data bits DQ15–DQ8 are don’t care. See the Autoselect Command Sequence section for more information. 9. If WP# protects the highest address sector, the data is 98h for factory locked and 18h for not factory locked. If WP# protects the lowest address sector, the data is 88h for factory locked and 08h for not factor locked. 10. The data is 00h for an unprotected sector group and 01h for a protected sector group. 11. The Unlock Bypass command is required prior to the Unlock Bypass Program command. 12. The Unlock Bypass Reset command is required to return to the read mode when the device is in the unlock bypass mode. 13. The system may read and program in non-erasing sectors, or enter the autoselect mode, when in the Erase Suspend mode. The Erase Suspend command is valid only during a sector erase operation. 14. The Erase Resume command is valid only during the Erase Suspend mode. 15. Command is valid when device is ready to read array data or when device is in autoselect mode. 16. Bottom boot = 2200 and top boot = 2201. 8. June 14, 2005 Am29LV641G 32 ADVANCE INFORMATION WRITE OPERATION STATUS The device provides several bits to determine the status of a program or erase operation: DQ2, DQ3, DQ5, DQ6, and DQ7. Table 11 and the following subsections describe the function of these bits. DQ7 and DQ6 each offer a method for determining whether a program or erase operation is complete or in progress. in the AC Characteristics section shows the Data# Polling timing diagram. START DQ7: Data# Polling The Data# Polling bit, DQ7, indicates to the host system whether an Embedded Program or Erase algorithm is in progress or completed, or whether the device is in Erase Suspend. Data# Polling is valid after the rising edge of the final WE# pulse in the command sequence. During the Embedded Program algorithm, the device outputs on DQ7 the complement of the datum programmed to DQ7. This DQ7 status also applies to programming during Erase Suspend. When the Embedded Program algorithm is complete, the device outputs the datum programmed to DQ7. The system must provide the program address to read valid status information on DQ7. If a program address falls within a protected sector, Data# Polling on DQ7 is active for approximately 1 µs, then the device returns to the read mode. During the Embedded Erase algorithm, Data# Polling produces a “0” on DQ7. When the Embedded Erase algorithm is complete, or if the device enters the Erase Suspend mode, Data# Polling produces a “1” on DQ7. The system must provide an address within any of the sectors selected for erasure to read valid status information on DQ7. After an erase command sequence is written, if all sectors selected for erasing are protected, Data# Polling on DQ7 is active for approximately 100 µs, then the device returns to the read mode. If not all selected sectors are protected, the Embedded Erase algorithm erases the unprotected sectors, and ignores the selected sectors that are protected. However, if the system reads DQ7 at an address within a protected sector, the status may not be valid. Just prior to the completion of an Embedded Program or Erase operation, DQ7 may change asynchronously with DQ0–DQ6 while Output Enable (OE#) is asserted low. That is, the device may change from providing status information to valid data on DQ7. Depending on when the system samples the DQ7 output, it may read the status or valid data. Even if the device has completed the program or erase operation and DQ7 has valid data, the data outputs on DQ0–DQ6 may be still invalid. Valid data on DQ0–DQ7 will appear on successive read cycles. Table 11 shows the outputs for Data# Polling on DQ7. Figure 6 shows the Data# Polling algorithm. Figure 19 Read DQ7–DQ0 Addr = VA DQ7 = Data? Yes No No DQ5 = 1? Yes Read DQ7–DQ0 Addr = VA DQ7 = Data? Yes No FAIL PASS Notes: 1. VA = Valid address for programming. During a sector erase operation, a valid address is any sector address within the sector being erased. During chip erase, a valid address is any non-protected sector address. 2. DQ7 should be rechecked even if DQ5 = “1” because DQ7 may change simultaneously with DQ5. Figure 6. Data# Polling Algorithm DQ6: Toggle Bit I Toggle Bit I on DQ6 indicates whether an Embedded Program or Erase algorithm is in progress or complete, or whether the device has entered the Erase Suspend mode. Toggle Bit I may be read at any address, and is valid after the rising edge of the final WE# pulse in the command sequence (prior to the 33 Am29LV641G June 14, 2005 ADVANCE INFORMATION program or erase operation), and during the sector erase time-out. During an Embedded Program or Erase algorithm operation, successive read cycles to any address cause DQ6 to toggle. The system may use either OE# or CE# to control the read cycles. When the operation is complete, DQ6 stops toggling. After an erase command sequence is written, if all sectors selected for erasing are protected, DQ6 toggles for approximately 100 µs, then returns to reading array data. If not all selected sectors are protected, the Embedded Erase algorithm erases the unprotected sectors, and ignores the selected sectors that are protected. The system can use DQ6 and DQ2 together to determine whether a sector is actively erasing or is erase-suspended. When the device is actively erasing (that is, the Embedded Erase algorithm is in progress), DQ6 toggles. When the device enters the Erase Suspend mode, DQ6 stops toggling. However, the system must also use DQ2 to determine which sectors are erasing or erase-suspended. Alternatively, the system can use DQ7 (see the subsection on DQ7: Data# Polling). If a program address falls within a protected sector, DQ6 toggles for approximately 1 μs after the program command sequence is written, then returns to reading array data. DQ6 also toggles during the erase-suspend-program mode, and stops toggling once the Embedded Program algorithm is complete. Table 11 shows the outputs for Toggle Bit I on DQ6. Figure 7 shows the toggle bit algorithm. Figure 20 in the “AC Characteristics” section shows the toggle bit timing diagrams. Figure 21 shows the differences between DQ2 and DQ6 in graphical form. See also the subsection on DQ2: Toggle Bit II. START Read DQ7–DQ0 Read DQ7–DQ0 Toggle Bit = Toggle? Yes No No DQ5 = 1? Yes Read DQ7–DQ0 Twice Toggle Bit = Toggle? No Yes Program/Erase Operation Not Complete, Write Reset Command Program/Erase Operation Complete Figure 7. Toggle Bit Algorithm Note: The system should recheck the toggle bit even if DQ5 = “1” because the toggle bit may stop toggling as DQ5 changes to “1.” See the subsections on DQ6 and DQ2 for more information. June 14, 2005 Am29LV641G 34 ADVANCE INFORMATION the toggle bit and DQ5 through successive read cycles, determining the status as described in the previous paragraph. Alternatively, it may choose to perform other system tasks. In this case, the system must start at the beginning of the algorithm when it returns to determine the status of the operation (top of Figure 7). DQ2: Toggle Bit II The “Toggle Bit II” on DQ2, when used with DQ6, indicates whether a particular sector is actively erasing (that is, the Embedded Erase algorithm is in progress), or whether that sector is erase-suspended. Toggle Bit II is valid after the rising edge of the final WE# pulse in the command sequence. DQ2 toggles when the system reads at addresses within those sectors that have been selected for erasure. (The system may use either OE# or CE# to control the read cycles.) But DQ2 cannot distinguish whether the sector is actively erasing or is erase-suspended. DQ6, by comparison, indicates whether the device is actively erasing, or is in Erase Suspend, but cannot distinguish which sectors are selected for erasure. Thus, both status bits are required for sector and mode information. Refer to Table 11 to compare outputs for DQ2 and DQ6. Figure 7 shows the toggle bit algorithm in flowchart form, and the section “DQ2: Toggle Bit II” explains the algorithm. See also the DQ6: Toggle Bit I subsection. Figure 20 shows the toggle bit timing diagram. Figure 21 shows the differences between DQ2 and DQ6 in graphical form. DQ5: Exceeded Timing Limits DQ5 indicates whether the program or erase time has exceeded a specified internal pulse count limit. Under these conditions DQ5 produces a “1,” indicating that the program or erase cycle was not successfully completed. The device may output a “1” on DQ5 if the system tries to program a “1” to a location that was previously programmed to “0.” O nly an erase operation can change a “0” back to a “1.” Under this condition, the device halts the operation, and when the timing limit has been exceeded, DQ5 produces a “1.” Under both these conditions, the system must write the reset command to return to the read mode (or to the erase-suspend-read mode if the device was previously in the erase-suspend-program mode). DQ3: Sector Erase Timer After writing a sector erase command sequence, the system may read DQ3 to determine whether or not erasure has begun. (The sector erase timer does not apply to the chip erase command.) If additional sectors are selected for erasure, the entire time-out also applies after each additional sector erase command. When the time-out period is complete, DQ3 switches from a “0” to a “1.” If the time between additional sector erase commands from the system can be assumed to be less than 50 µs, the system need not monitor DQ3. See also the Sector Erase Command Sequence section. After the sector erase command is written, the system should read the status of DQ7 (Data# Polling) or DQ6 (Toggle Bit I) to ensure that the device has accepted the command sequence, and then read DQ3. If DQ3 is “1,” the Embedded Erase algorithm has begun; all further commands (except Erase Suspend) are ignored until the erase operation is complete. If DQ3 is “0,” the device will accept additional sector erase commands. To ensure the command has been accepted, the system software should check the status of DQ3 prior to and following each subsequent sector erase command. If DQ3 is high on the second status check, the last command might not have been accepted. Table 11 shows the status of DQ3 relative to the other status bits. Reading Toggle Bits DQ6/DQ2 Refer to Figure 7 for the following discussion. Whenever the system initially begins reading toggle bit status, it must read DQ7–DQ0 at least twice in a row to determine whether a toggle bit is toggling. Typically, the system would note and store the value of the toggle bit after the first read. After the second read, the system would compare the new value of the toggle bit with the first. If the toggle bit is not toggling, the device has completed the program or erase operation. The system can read array data on DQ7–DQ0 on the following read cycle. However, if after the initial two read cycles, the system determines that the toggle bit is still toggling, the system also should note whether the value of DQ5 is high (see the section on DQ5). If it is, the system should then determine again whether the toggle bit is toggling, since the toggle bit may have stopped toggling just as DQ5 went high. If the toggle bit is no longer toggling, the device has successfully completed the program or erase operation. If it is still toggling, the device did not completed the operation successfully, and the system must write the reset command to return to reading array data. The remaining scenario is that the system initially determines that the toggle bit is toggling and DQ5 has not gone high. The system may continue to monitor 35 Am29LV641G June 14, 2005 ADVANCE Table 11. INFORMATION Write Operation Status DQ7 (Note 2) DQ7# 0 1 Data DQ7# DQ6 Toggle Toggle No toggle Data Toggle DQ5 (Note 1) 0 0 0 Data 0 DQ3 N/A 1 N/A Data N/A DQ2 (Note 2) No toggle Toggle Toggle Data N/A Standard Mode Erase Suspend Mode Status Embedded Program Algorithm Embedded Erase Algorithm Erase Erase-Suspend-Re Suspended Sector ad Non-Erase Suspended Sector Erase-Suspend-Program Notes: 1. DQ5 switches to ‘1’ when an Embedded Program or Embedded Erase operation has exceeded the maximum timing limits. Refer to the section on DQ5 for more information. 2. DQ7 and DQ2 require a valid address when reading status information. Refer to the appropriate subsection for further details. June 14, 2005 Am29LV641G 36 ADVANCE INFORMATION ABSOLUTE MAXIMUM RATINGS Storage Temperature Plastic Packages . . . . . . . . . . . . . . . –65°C to +150°C Ambient Temperature with Power Applied. . . . . . . . . . . . . . –65°C to +125°C Voltage with Respect to Ground VCC (Note 1) . . . . . . . . . . . . . . . . .–0.5 V to +4.0 V VIO . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to +5.5 V A9, OE#, ACC, and RESET# (Note 2) . . . . . . . . . . . . . . . . . . . .–0.5 V to +12.5 V All other pins (Note 1) . . . . . . –0.5 V to VCC +0.5 V Output Short Circuit Current (Note 3) . . . . . . 200 mA Notes: 1. Minimum DC voltage on input or I/O pins is –0.5 V. During voltage transitions, input or I/O pins may overshoot V SS t o –2.0 V for periods of up to 20 ns. Maximum DC voltage on input or I/O pins is VCC +0.5 V. See Figure 8. During voltage transitions, input or I/O pins may overshoot to VCC +2.0 V for periods up to 20 ns. See Figure 9. 2. Minimum DC input voltage on pins A9, OE#, ACC, and RESET# is –0.5 V. During voltage transitions, A9, OE#, ACC, and RESET# may overshoot V SS t o –2.0 V for periods of up to 20 ns. See Figure 8. Maximum DC input voltage on pin A9, OE#, ACC, and RESET# is +12.5 V which may overshoot to +14.0 V for periods up to 20 ns. 3. No more than one output may be shorted to ground at a time. Duration of the short circuit should not be greater than one second. Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational sections of this data sheet is not implied. Exposure of the device to absolute maximum rating conditions for extended periods may affect device reliability. 20 ns VCC +2.0 V VCC +0.5 V 2.0 V 20 ns 20 ns +0.8 V –0.5 V –2.0 V 20 ns 20 ns 20 ns Figure 8. Maximum Negative Overshoot Waveform Figure 9. Maximum Positive Overshoot Waveform OPERATING RANGES Industrial (I) Devices Ambient Temperature (TA) . . . . . . . . . –40°C to +85°C VCC Supply Voltages VCC for all devices . . . . . . . . . . . . . . . . . 2.7 V to 3.6 V Operating ranges define those limits between which the functionality of the device is guaranteed. 37 Am29LV641G June 14, 2005 ADVANCE INFORMATION DC CHARACTERISTICS CMOS Compatible Parameter Symbol ILI ILIT ILO ICC1 ICC2 ICC3 ICC4 ICC5 VIL VIH VHH VID VOL VOH1 VOH2 VLKO Low VCC Lock-Out Voltage (Note 7) Parameter Description Input Load Current (Note 1) A9, ACC Input Load Current Output Leakage Current VCC Active Read Current (Notes 2, 3) Test Conditions VIN = VSS to VCC, VCC = VCC max VCC = VCC max; A9 = 12.5 V VOUT = VSS to VCC, VCC = VCC max 5 MHz CE# = VIL, OE# = VIH 1 MHz 9 2 15 0.2 0.2 0.2 –0.5 0.7 x VCC VCC = 3.0 V ± 10% 11.5 8.5 Min Typ Max Unit µA µA µA mA mA µA µA µA V V V V V V V 2.5 V ±1.0 35 ±1.0 16 4 26 5 5 5 0.8 VCC + 0.3 12.5 12.5 0.45 0.85 x VIO VIO–0.4 2.3 VCC Active Write Current (Notes 3, 4) CE# = VIL, OE# = VIH, WE# = VIL VCC Standby Current (Note 3) VCC Reset Current (Note 3) Automatic Sleep Mode (Notes 3, 5) Input Low Voltage (Note 6) Input High Voltage (Note 6) Voltage for ACC Program Acceleration CE#, RESET# = VCC ± 0.3 V, WP# = VIH RESET# = VSS ± 0.3 V, WP# = VIH VIH = VCC ± 0.3 V; VIL = VSS ± 0.3 V, WP# = VIH Voltage for Autoselect and Temporary VCC = 3.0 V ± 10% Sector Unprotect Output Low Voltage Output High Voltage (Note 7) IOL = 4.0 mA, VCC = VCC min IOH = –2.0 mA, VCC = VCC min IOH = –100 µA, VCC = VCC min Notes: 1. On the WP# pin only, the maximum input load current when WP# = VIL is ± 5.0 µA. 2. 3. 4. 5. The ICC current listed is typically less than 2 mA/MHz, with OE# at VIH. Maximum ICC specifications are tested with VCC = VCCmax. ICC active while Embedded Erase or Embedded Program is in progress. Automatic sleep mode enables the low power mode when addresses remain stable for tACC + 30 ns. Typical sleep mode current is 200 nA. 6. If VIO < VCC, maximum VIL for CE# is 0.3 x VIO. If VIO < VCC, minimum VIH for CE# is 0.3 x VIO. 7. Not 100% tested. June 14, 2005 Am29LV641G 38 ADVANCE INFORMATION DC CHARACTERISTICS Zero-Power Flash 25 Supply Current in mA 20 15 10 5 0 0 500 1000 1500 2000 Time in ns 2500 3000 3500 4000 Note: Addresses are switching at 1 MHz Figure 10. ICC1 Current vs. Time (Showing Active and Automatic Sleep Currents) 12 3.6 V 10 8 Supply Current in mA 2.7 V 6 4 2 0 1 Note: T = 25 °C 2 3 Frequency in MHz Figure 11. Typical ICC1 vs. Frequency 4 5 39 Am29LV641G June 14, 2005 ADVANCE INFORMATION TEST CONDITIONS Table 12. 3.3 V 2.7 kΩ Test Condition Output Load Output Load Capacitance, CL (including jig capacitance) CL 6.2 kΩ Input Rise and Fall Times Input Pulse Levels Input timing measurement reference levels (See Note) Note: Diodes are IN3064 or equivalent Output timing measurement reference levels Test Specifications 55R 70R 1 TTL gate 30 5 0.0–3.0 1.5 0.5 VIO pF ns V V V Unit Device Under Test Figure 12. Test Setup Note: If VIO < VCC, the reference level is 0.5 VIO. KEY TO SWITCHING WAVEFORMS WAVEFORM INPUTS Steady Changing from H to L Changing from L to H Don’t Care, Any Change Permitted Does Not Apply Changing, State Unknown Center Line is High Impedance State (High Z) OUTPUTS 3.0 V 0.0 V Input 1.5 V Measurement Level 0.5 VIO V Output Note: If VIO < VCC, the input measurement reference level is 0.5 VIO. Figure 13. Input Waveforms and Measurement Levels June 14, 2005 Am29LV641G 40 ADVANCE INFORMATION AC CHARACTERISTICS Read-Only Operations Parameter JEDEC tAVAV tAVQV tELQV tGLQV tEHQZ tGHQZ tAXQX Std. tRC tACC tCE tOE tDF tDF tOH Description Read Cycle Time (Note 1) Address to Output Delay Chip Enable to Output Delay Output Enable to Output Delay Chip Enable to Output High Z (Note 1) Output Enable to Output High Z (Note 1) Output Hold Time From Addresses, CE# or OE#, Whichever Occurs First Read tOEH Output Enable Hold Time (Note 1) Toggle and Data# Polling CE#, OE# = VIL OE# = VIL Test Setup Min Max Max Max Max Max Min Min Min Speed Options 55R 55 55 55 30 16 16 0 0 10 70 70 70 70 Unit ns ns ns ns ns ns ns ns ns Notes: 1. Not 100% tested. 2. See Figure 12 and Table 12 for test specifications. tRC Addresses CE# tRH tRH OE# tOEH WE# HIGH Z Outputs RESET# Output Valid tCE tOH HIGH Z tOE tDF Addresses Stable tACC Figure 14. Read Operation Timings 41 Am29LV641G June 14, 2005 ADVANCE INFORMATION AC CHARACTERISTICS Hardware Reset (RESET#) Parameter JEDEC Std tReady tReady tRP tRH tRPD Description RESET# Pin Low (During Embedded Algorithms) to Read Mode (See Note) RESET# Pin Low (NOT During Embedded Algorithms) to Read Mode (See Note) RESET# Pulse Width Reset High Time Before Read (See Note) RESET# Low to Standby Mode Max Max Min Min Min All Speed Options 20 500 500 50 20 Unit μs ns ns ns μs Note: Not 100% tested. CE#, OE# tRH RESET# tRP tReady Reset Timings NOT during Embedded Algorithms Reset Timings during Embedded Algorithms tReady CE#, OE# RESET# tRP Figure 15. Reset Timings June 14, 2005 Am29LV641G 42 ADVANCE INFORMATION AC CHARACTERISTICS Erase and Program Operations Parameter JEDEC tAVAV tAVWL Std. tWC tAS tASO tWLAX tAH tAHT tDVWH tWHDX tDS tDH tOEPH tGHWL tELWL tWHEH tWLWH tWHDL tWHWH1 tWHWH1 tWHWH2 tGHWL tCS tCH tWP tWPH tWHWH1 tWHWH1 tWHWH2 tVHH tVCS Notes: 1. Not 100% tested. 2. See the “Erase And Programming Performance” section for more information. Description Write Cycle Time (Note 1) Address Setup Time Address Setup Time to OE# low during toggle bit polling Address Hold Time Address Hold Time From CE# or OE# high during toggle bit polling Data Setup Time Data Hold Time Output Enable High during toggle bit polling Read Recovery Time Before Write (OE# High to WE# Low) CE# Setup Time CE# Hold Time Write Pulse Width Write Pulse Width High Word Programming Operation (Note 2) Accelerated Word Programming Operation (Note 2) Sector Erase Operation (Note 2) VHH Rise and Fall Time (Note 1) VCC Setup Time (Note 1) Min Min Min Min Min Min Min Min Min Min Min Min Min Typ Typ Typ Min Min Speed Options 55R 55 0 15 40 0 40 0 20 0 0 0 30 25 7 4 0.6 250 50 70 70 Unit ns ns ns ns ns ns ns ns ns ns ns ns ns µs µs sec ns µs 43 Am29LV641G June 14, 2005 ADVANCE INFORMATION AC CHARACTERISTICS Program Command Sequence (last two cycles) tWC Addresses 555h tAS PA tAH CE# OE# tWP WE# tCS tDS Data tDH PD Status DOUT tWPH tWHWH1 PA PA Read Status Data (last two cycles) tCH A0h VCC tVCS Notes: 1. PA = program address, PD = program data, DOUT is the true data at the program address. Illustration shows device in word mode. Figure 16. Program Operation Timings VHH ACC VIL or VIH tVHH tVHH VIL or VIH Figure 17. Accelerated Program Timing Diagram June 14, 2005 Am29LV641G 44 ADVANCE INFORMATION AC CHARACTERISTICS Erase Command Sequence (last two cycles) tWC Addresses 2AAh tAS SA 555h for chip erase Read Status Data VA tAH VA CE# OE# tWP WE# tCS tDS tCH tWPH tWHWH2 tDH Data 55h tVCS VCC 30h 10 for Chip Erase In Progress Complete Notes: 1. SA = sector address (for Sector Erase), VA = Valid Address for reading status data (see “Write Operation Status”. 2. These waveforms are for the word mode. Figure 18. Chip/Sector Erase Operation Timings 45 Am29LV641G June 14, 2005 ADVANCE INFORMATION AC CHARACTERISTICS tRC Addresses VA tACC tCE CE# tCH OE# tOEH WE# tOH DQ7 High Z VA VA tOE tDF Complement Complement True Valid Data High Z DQ6–DQ0 Status Data Status Data True Valid Data Note: VA = Valid address. Illustration shows first status cycle after command sequence, last status read cycle, and array data read cycle. Figure 19. Data# Polling Timings (During Embedded Algorithms) June 14, 2005 Am29LV641G 46 ADVANCE INFORMATION AC CHARACTERISTICS tAHT Addresses tAS tAHT tASO CE# tOEH WE# tOEPH OE# tDH DQ6/DQ2 Valid Data Valid Status tCEPH tOE Valid Status Valid Status Valid Data (first read) (second read) (stops toggling) Note: VA = Valid address; not required for DQ6. Illustration shows first two status cycle after command sequence, last status read cycle, and array data read cycle Figure 20. Toggle Bit Timings (During Embedded Algorithms) Enter Embedded Erasing WE# Erase Suspend Erase Enter Erase Suspend Program Erase Suspend Program Erase Resume Erase Suspend Read Erase Erase Complete Erase Suspend Read DQ6 DQ2 Note: DQ2 toggles only when read at an address within an erase-suspended sector. The system may use OE# or CE# to toggle DQ2 and DQ6. Figure 21. DQ2 vs. DQ6 47 Am29LV641G June 14, 2005 ADVANCE INFORMATION AC CHARACTERISTICS Temporary Sector Unprotect Parameter JEDEC Std tVIDR tRSP Description VID Rise and Fall Time (See Note) RESET# Setup Time for Temporary Sector Unprotect Min Min All Speed Options 500 4 Unit ns µs Note: Not 100% tested. VID RESET# VSS, VIL, or VIH tVIDR Program or Erase Command Sequence CE# tVIDR VID VSS, VIL, or VIH WE# tRSP Figure 22. Temporary Sector Group Unprotect Timing Diagram June 14, 2005 Am29LV641G 48 ADVANCE INFORMATION AC CHARACTERISTICS VID VIH RESET# SA, A6, A1, A0 Valid* Sector Group Protect or Unprotect Valid* Verify 40h Sector Group Protect: 150 µs, Sector Group Unprotect: 15 ms Valid* Data 60h 60h Status 1 µs CE# WE# OE# * For sector group protect, A6 = 0, A1 = 1, A0 = 0. For sector group unprotect, A6 = 1, A1 = 1, A0 = 0. Figure 23. Sector Group Protect and Unprotect Timing Diagram 49 Am29LV641G June 14, 2005 ADVANCE INFORMATION AC CHARACTERISTICS Alternate CE# Controlled Erase and Program Operations Parameter JEDEC tAVAV tAVWL tELAX tDVEH tEHDX tGHEL tWLEL tEHWH tELEH tEHEL tWHWH1 tWHWH1 tWHWH2 Std tWC tAS tAH tDS tDH tGHEL tWS tWH tCP tCPH tWHWH1 tWHWH1 tWHWH2 Description Write Cycle Time (Note 1) Address Setup Time Address Hold Time Data Setup Time Data Hold Time Read Recovery Time Before Write (OE# High to WE# Low) WE# Setup Time WE# Hold Time CE# Pulse Width CE# Pulse Width High Word Programming Operation (Note 2) Accelerated Word Programming Operation (Note 2) Sector Erase Operation (Note 2) Min Min Min Min Min Min Min Min Min Min Typ Typ Typ Speed Options 55R 55 0 40 40 0 0 0 0 45 30 7 4 0.6 70 70 Unit ns ns ns ns ns ns ns ns ns ns µs µs sec Notes: 1. Not 100% tested. 2. See the “Erase And Programming Performance” section for more information. June 14, 2005 Am29LV641G 50 ADVANCE INFORMATION AC CHARACTERISTICS 555 for program 2AA for erase PA for program SA for sector erase 555 for chip erase Data# Polling PA Addresses tWC tWH WE# tGHEL OE# tCP CE# tWS tCPH tDS tDH Data tRH A0 for program 55 for erase PD for program 30 for sector erase 10 for chip erase tAS tAH tWHWH1 or 2 tBUSY DQ7# DOUT RESET# RY/BY# Notes: 1. Figure indicates last two bus cycles of a program or erase operation. 2. PA = program address, SA = sector address, PD = program data. 3. DQ7# is the complement of the data written to the device. DOUT is the data written to the device. 4. Waveforms are for the word mode. Figure 24. Alternate CE# Controlled Write (Erase/Program) Operation Timings 51 Am29LV641G June 14, 2005 ADVANCE INFORMATION ERASE AND PROGRAMMING PERFORMANCE Parameter Sector Erase Time Chip Erase Time Word Program Time Accelerated Word Program Time Chip Program Time (Note 3) Typ (Note 1) 0.6 50 7 4 18 210 120 54 Max (Note 2) 4 Unit sec sec µs µs sec Comments Excludes 00h programming prior to erasure (Note 4) Excludes system level overhead (Note 5) Notes: 1. Typical program and erase times assume the following conditions: 25°C, 3.0 V VCC, 1,000,000 cycles. Additionally, programming typicals assume checkerboard pattern. 2. Under worst case conditions of 90°C, VCC = 3.0 V, 1,000,000 cycles. 3. The typical chip programming time is considerably less than the maximum chip programming time listed, since most words program faster than the maximum program times listed. 4. In the pre-programming step of the Embedded Erase algorithm, all bits are programmed to 00h before erasure. 5. System-level overhead is the time required to execute the two- or four-bus-cycle sequence for the program command. See Table 10 for further information on command definitions. 6. The device has a minimum erase and program cycle endurance of 1,000,000 cycles. LATCHUP CHARACTERISTICS Description Input voltage with respect to VSS on all pins except I/O pins (including A9, OE#, and RESET#) Input voltage with respect to VSS on all I/O pins VCC Current Note: Includes all pins except VCC. Test conditions: VCC = 3.0 V, one pin at a time. Min –1.0 V –1.0 V –100 mA Max 12.5 V VCC + 1.0 V +100 mA TSOP & FBGA PIN CAPACITANCE Parameter Symbol Parameter Description Test Setup Typ TSOP CIN Input Capacitance VIN = 0 Fine-pitch BGA TSOP COUT Output Capacitance VOUT = 0 Fine-pitch BGA TSOP CIN2 Control Pin Capacitance VIN = 0 Fine-pitch BGA Max 6 4.2 8.5 5.4 7.5 3.9 Unit 7.5 5.0 12 6.5 9 4.7 Notes: 1. Sampled, not 100% tested. 2. Test conditions TA = 25°C, f = 1.0 MHz. DATA RETENTION Parameter Description Minimum Pattern Data Retention Time Test Conditions 150°C 125°C Min 10 20 Unit Years Years June 14, 2005 Am29LV641G 52 ADVANCE INFORMATION PHYSICAL DIMENSIONS FBE063—63-Ball Fine-Pitch Ball Grid Array (FBGA) 11 x 12 mm package Dwg rev AF; 10/99 53 Am29LV641G June 14, 2005 ADVANCE INFORMATION PHYSICAL DIMENSIONS LAA064–64-Ball Fortified Ball Grid Array (Fortified BGA) 13 x 11 mm package 54 Am29LV641G June 14, 2005 ADVANCE INFORMATION PHYSICAL DIMENSIONS TS 048—48-Pin Standard TSOP ) Dwg rev AA; 10/99 Note: For reference only. BSC is an ANSI standard for Basic Space Centering. June 14, 2005 Am29LV641G 55 ADVANCE INFORMATION REVISION SUMMARY Revision A (August 9, 2002) Initial Release. Customer Lockable: SecSi Sector NOT Programmed or Protected at the factory. Added second bullet, SecSi sector-protect verify text and figure 3. Common Flash Memory Interface (CFI) Changed wording in last sentence of third paragraph from, “...the autoselect mode.” to “...reading array data.” Changed CFI website address. Command Definitions Changed wording in last sentence of first paragraph from, “...resets the device to reading array data.” to ...”may place the device to an unknown state. A reset command is then required to return the device to reading array data.” TSOP Pin Capacitance Added fine-pitch BGA capacitance. Revision A+1 (August 28, 2002) Ordering Information Corrected order numbers and package markings. Added Marking Convention explanation about Enhanced-VIO markings. Revision A+2 (October 18, 2002) Global Added 55R speed grade and removed 90 and 100 speed grade throughout datasheet. Connection Diagram Removed the 56–pin SSOP package diagram. Special Package Handling Instructions Modified wording. Ordering Information Changed the VIO for 55R to equal 3.0 V–3.6 V and added 55 ns to Valid Combinations table. Revision A+3 (June 14, 2005) Cover Page / Title Page Added Spansion EOL cover page and EOL disclaimer to AMD title page. Trademarks Copyright © 2001 Advanced Micro Devices, Inc. All rights reserved. AMD, the AMD logo, and combinations thereof are registered trademarks of Advanced Micro Devices, Inc. ExpressFlash is a trademark of Advanced Micro Devices, Inc. Product names used in this publication are for identification purposes only and may be trademarks of their respective companies. 56 Am29LV641G June 14, 2005