CY7C1480V33_11

CY7C1480V33 CY7C1482V33 CY7C1486V33 72-Mbit (2 M × 36/4 M × 18/1 M × 72) Pipelined Sync SRAM 72-Mbit (2 M × 36/4 M × 18/1 M × 72) Pipelined Sync SRAM Features ■ ■ ■ ■ ■ ■ Functional Description[1] The CY7C1480V33/CY7C1482V33/CY7C1486V33 SRAM integrates 2 M × 36/4 M × 18/1 M × 72 SRAM cells with advanced synchronous peripheral circuitry and a two-bit counter for internal burst operation. All synchronous inputs are gated by registers controlled by a positive-edge-triggered Clock Input (CLK). The synchronous inputs include all addresses, all data inputs, address-pipelining Chip Enable (CE1), depth-expansion Chip Enables (CE2 and CE3), Burst Control inputs (ADSC, ADSP, and ADV), Write Enables (BWX, and BWE), and Global Write (GW). Asynchronous inputs include the Output Enable (OE) and the ZZ pin. Addresses and chip enables are registered at the rising edge of the clock when either Address Strobe Processor (ADSP) or Address Strobe Controller (ADSC) are active. Subsequent burst addresses can be internally generated as controlled by the Advance pin (ADV). Address, data inputs, and write controls are registered on-chip to initiate a self timed write cycle.This part supports byte write operations (see Pin Definitions on page 8 and Truth Table on page 11 for further details). Write cycles can be one to two or four bytes wide as controlled by the byte write control inputs. GW when active LOW causes all bytes to be written. The CY7C1480V33/CY7C1482V33/CY7C1486V33 operates from a +3.3 V core power supply while all outputs may operate with either a +2.5 or +3.3 V supply. All inputs and outputs are JEDEC standard JESD8-5 compatible. Supports bus operation up to 250 MHz Available speed grades are 250, 200, and 167 MHz Registered inputs and outputs for pipelined operation 3.3V core power supply 2.5V/3.3V I/O operation Fast clock-to-output times ❐ 3.0 ns (for 250 MHz device) Provide high performance 3-1-1-1 access rate User selectable burst counter supporting Intel® Pentium® interleaved or linear burst sequences Separate processor and controller address strobes Synchronous self timed writes Asynchronous output enable Single cycle chip deselect CY7C1480V33, CY7C1482V33 available in JEDEC-standard Pb-free 100-pin TQFP, Pb-free and non-Pb-free 165-ball FBGA package. CY7C1486V33 available in Pb-free and non-Pb-free 209-ball FBGA package IEEE 1149.1 JTAG-Compatible Boundary Scan “ZZ” Sleep Mode option ■ ■ ■ ■ ■ ■ ■ ■ ■ Selection Guide 250 MHz Maximum Access Time Maximum Operating Current Maximum CMOS Standby Current 3.0 500 120 200 MHz 3.0 500 120 167 MHz 3.4 450 120 Unit ns mA mA Note 1. For best practices recommendations, please refer to the Cypress application note AN1064, SRAM System Guidelines. Cypress Semiconductor Corporation Document Number: 38-05283 Rev. *K • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600 Revised May 14, 2011 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Logic Block Diagram – CY7C1480V33 (2 M × 36) A 0, A1, A ADDRESS REGISTER 2 A [1:0] MODE ADV CLK Q1 ADSC ADSP BW D DQ D ,DQP D BYTE WRITE REGISTER DQ C ,DQP C BYTE WRITE REGISTER DQ B ,DQP B BYTE WRITE REGISTER DQ A ,DQP A BYTE WRITE REGISTER BURST COUNTER CLR AND LOGIC Q0 DQ D ,DQPD BYTE WRITE DRIVER DQ C ,DQP C BYTE WRITE DRIVER DQ B ,DQP B BYTE WRITE DRIVER DQ A ,DQP A BYTE WRITE DRIVER BW C MEMORY ARRAY SENSE AMPS OUTPUT REGISTERS OUTPUT BUFFERS E BW B DQs DQP A DQP B DQP C DQP D BW A BWE GW CE 1 CE 2 CE 3 OE ENABLE REGISTER PIPELINED ENABLE INPUT REGISTERS ZZ SLEEP CONTROL Logic Block Diagram – CY7C1482V33 (4 M × 18) A 0, A1, A MODE ADDRESS REGISTER 2 A[1:0] ADV CLK BURST Q1 COUNTER AND LOGIC CLR Q0 ADSC ADSP DQ B, DQP B WRITE REGISTER DQ B, DQP B WRITE DRIVER MEMORY ARRAY BW A BWE GW CE 1 CE2 CE3 OE ENABLE REGISTER DQ A, DQP A WRITE REGISTER DQ A, DQP A WRITE DRIVER SENSE AMPS BW B OUTPUT REGISTERS OUTPUT BUFFERS E DQs DQP A DQP B PIPELINED ENABLE INPUT REGISTERS ZZ SLEEP CONTROL Document Number: 38-05283 Rev. *K Page 2 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Logic Block Diagram – CY7C1486V33 (1 M × 72) A 0, A1,A ADDRESS REGISTER A[1:0] MODE ADV CLK Q1 BINARY COUNTER CLR Q0 ADSC ADSP BW H DQ H , DQPH WRITE DRIVER DQ F, DQPF WRITE DRIVER DQ F, DQPF WRITE DRIVER DQ E , DQPE WRITE DRIVER DQ D , DQPD WRITE DRIVER DQ H , DQPH WRITE DRIVER DQ G , DQPG WRITE DRIVER DQ F, DQPF WRITE DRIVER DQ E , DQPE BYTE “a” WRITE DRIVER DQ D , DQPD WRITE DRIVER DQ C, DQPC WRITE DRIVER SENSE AMPS BW G BW F BW E MEMORY ARRAY BW D BW C DQ C, DQPC WRITE DRIVER OUTPUT REGISTERS BW B DQ B , DQPB WRITE DRIVER DQ B , DQPB WRITE DRIVER DQ A , DQPA WRITE DRIVER OUTPUT BUFFERS E BW A BWE GW CE1 CE2 CE3 OE DQ A , DQPA WRITE DRIVER ENABLE REGISTER PIPELINED ENABLE INPUT REGISTERS DQs DQP A DQP B DQP C DQP D DQP E DQP F DQP G DQP H ZZ SLEEP CONTROL Document Number: 38-05283 Rev. *K Page 3 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Contents Pin Configurations ........................................................... 5 Pin Definitions .................................................................. 8 Functional Overview ........................................................ 9 Single Read Accesses ................................................ 9 Single Write Accesses Initiated by ADSP ................... 9 Single Write Accesses Initiated by ADSC ................. 10 Burst Sequences ....................................................... 10 Sleep Mode ............................................................... 10 Interleaved Burst Address Table (MODE = Floating or VDD) ............................................. 10 Linear Burst Address Table (MODE = GND) ................................................................ 10 ZZ Mode Electrical Characteristics ............................... 10 Truth Table ...................................................................... 11 Truth Table for Read/Write ............................................ 12 Truth Table for Read/Write ............................................ 12 Truth Table for Read/Write ............................................ 13 IEEE 1149.1 Serial Boundary Scan (JTAG) .................. 14 Disabling the JTAG Feature ...................................... 14 TAP Controller State Diagram ....................................... 14 Test Access Port (TAP) ............................................. 14 TAP Controller Block Diagram ...................................... 14 PERFORMING A TAP RESET .................................. 14 TAP REGISTERS ...................................................... 14 TAP Instruction Set ................................................... 15 TAP Timing ...................................................................... 16 TAP AC Switching Characteristics ............................... 16 3.3 V TAP AC Test Conditions ....................................... 17 3.3 V TAP AC Output Load Equivalent ......................... 17 2.5 V TAP AC Test Conditions ....................................... 17 2.5 V TAP AC Output Load Equivalent ......................... 17 TAP DC Electrical Characteristics and Operating Conditions ..................................................... 17 Identification Register Definitions ................................ 17 Scan Register Sizes ....................................................... 18 Identification Codes ....................................................... 18 Boundary Scan Exit Order (2 M × 36) ........................... 19 Boundary Scan Exit Order (4 M × 18) ........................... 19 Boundary Scan Exit Order (1 M × 72) ........................... 20 Maximum Ratings ........................................................... 21 Operating Range ............................................................. 21 Electrical Characteristics ............................................... 21 Capacitance .................................................................... 22 Thermal Resistance ........................................................ 22 AC Test Loads and Waveforms ..................................... 23 Switching Characteristics .............................................. 23 Switching Waveforms .................................................... 25 Read Cycle Timing .................................................... 25 Write Cycle Timing .................................................... 26 Read/Write Cycle Timing ........................................... 27 ZZ Mode Timing ........................................................ 28 Ordering Information ...................................................... 29 Ordering Code Definitions ......................................... 29 Package Diagrams .......................................................... 30 Acronyms ........................................................................ 33 Document Conventions ................................................. 33 Units of Measure ....................................................... 33 Document History Page ................................................. 34 Sales, Solutions, and Legal Information ...................... 36 Worldwide Sales and Design Support ....................... 36 Products .................................................................... 36 PSoC Solutions ......................................................... 36 Document Number: 38-05283 Rev. *K Page 4 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Pin Configurations 100-pin TQFP Pinout A A CE1 CE2 BWD BWC BWB BWA CE3 VDD VSS CLK GW BWE OE ADSC ADSP ADV A A A A CE1 CE2 NC NC BWB BWA CE3 VDD VSS CLK GW BWE OE ADSC ADSP ADV A A DQPB DQB DQB VDDQ VSSQ DQB DQB DQB DQB VSSQ VDDQ DQB DQB VSS NC VDD ZZ DQA DQA VDDQ VSSQ DQA DQA DQA DQA VSSQ VDDQ DQA DQA DQPA NC NC NC VDDQ VSSQ NC NC DQB DQB VSSQ VDDQ DQB DQB NC VDD NC VSS DQB DQB VDDQ VSSQ DQB DQB DQPB NC VSSQ VDDQ NC NC NC 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 DQPC DQC DQc VDDQ VSSQ DQC DQC DQC DQC VSSQ VDDQ DQC DQC NC VDD NC VSS DQD DQD VDDQ VSSQ DQD DQD DQD DQD VSSQ VDDQ DQD DQD DQPD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 CY7C1480V33 (2 M × 36) 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 CY7C1482V33 (4 M × 18) 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 A NC NC VDDQ VSSQ NC DQPA DQA DQA VSSQ VDDQ DQA DQA VSS NC VDD ZZ DQA DQA VDDQ VSSQ DQA DQA NC NC VSSQ VDDQ NC NC NC 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 MODE A A A A A1 A0 A A VSS VDD MODE A A A A A1 A0 A A VSS VDD A A A A A A A A A Document Number: 38-05283 Rev. *K A A A A A A A A A 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 Page 5 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Pin Configurations (continued) 165-ball FBGA (15 × 17 × 1.4 mm) Pinout CY7C1480V33 (2 M × 36) 1 A B C D E F G H J K L M N P R NC/288M NC/144M DQPC DQC DQC DQC DQC NC DQD DQD DQD DQD DQPD NC MODE 2 A A NC DQC DQC DQC DQC NC DQD DQD DQD DQD NC A 3 CE1 CE2 VDDQ VDDQ VDDQ VDDQ VDDQ NC VDDQ VDDQ VDDQ VDDQ VDDQ A A 4 BWC BWD VSS VDD VDD VDD VDD VDD VDD VDD VDD VDD VSS A 5 BWB BWA VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS NC TDI TMS 6 CE3 CLK 7 BWE GW 8 ADSC OE VSS VDD 9 ADV ADSP 10 A A NC/1G DQB DQB DQB DQB NC DQA DQA DQA DQA NC A A 11 NC NC/576M DQPB DQB DQB DQB DQB ZZ DQA DQA DQA DQA DQPA A A VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS A A1 A0 VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS NC TDO TCK VDDQ VDDQ VDDQ VDDQ VDDQ NC VDDQ VDDQ VDDQ VDDQ VDDQ A A VDD VDD VDD VDD VDD VDD VDD VDD VSS A A A A CY7C1482V33 (4 M × 18) 1 A B C D E F G H J K L M N P R NC/288M NC/144M NC NC NC NC NC NC DQB DQB DQB DQB DQPB NC MODE 2 A A NC DQB DQB DQB DQB NC NC NC NC NC NC A 3 CE1 CE2 VDDQ VDDQ VDDQ VDDQ VDDQ NC VDDQ VDDQ VDDQ VDDQ VDDQ A A 4 BWB NC VSS VDD VDD VDD VDD VDD VDD VDD VDD VDD VSS A 5 NC BWA VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS NC TDI TMS 6 CE3 CLK 7 BWE GW 8 ADSC OE 9 ADV ADSP 10 A A NC/1G NC NC NC NC NC DQA DQA DQA DQA NC A A 11 A NC/576M DQPA DQA DQA DQA DQA ZZ NC NC NC NC NC A A VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS A A1 A0 VSS VSS VSS VSS VSS VSS VSS VSS VSS VSS NC TDO TCK VSS VDD VDD VDD VDD VDD VDD VDD VDD VDD VSS A VDDQ VDDQ VDDQ VDDQ VDDQ NC VDDQ VDDQ VDDQ VDDQ VDDQ A A A A A Document Number: 38-05283 Rev. *K Page 6 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Pin Configurations (continued) 209-ball FBGA (14 × 22 × 1.76 mm) Pinout CY7C1486V33 (1 M × 72) 1 A B C D E F G H J K L M N P R T U V W 2 3 A BWSC BWSH VSS VDDQ VSS VDDQ VSS VDDQ CLK VDDQ VSS VDDQ VSS 4 CE2 5 ADSP 6 ADSC BWE CE1 OE VDD NC NC NC NC VSS NC NC NC ZZ VDD MODE A A1 A0 7 ADV A 8 CE3 BWSB 9 A BWSF BWSA VSS VDDQ VSS VDDQ VSS VDDQ NC VDDQ VSS VDDQ VSS VDDQ VSS A A TCK 10 11 DQG DQG DQG DQG DQPG DQC DQC DQC DQC NC DQG DQG DQG DQG DQPC DQC DQC DQC DQC NC DQB DQB DQB DQB DQPF DQF DQF DQF DQF NC DQB DQB DQB DQB DQPB DQF DQF DQF DQF NC BWSG NC/288M BWSD NC/144M NC VDDQ VSS VDDQ VSS VDDQ NC VDDQ VSS VDDQ VSS VDDQ NC A A TDI NC/1G VDD VSS VDD VSS VDD VSS VDD VSS VDD VSS VDD NC A A A NC/576M BWSE GW VDD VSS VDD VSS VDD VSS VDD VSS VDD VSS VDD NC A A A NC VDDQ VSS VDDQ VSS VDDQ NC VDDQ VSS VDDQ VSS VDDQ NC A A TDO DQH DQH DQH DQH DQPD DQD DQD DQD DQD DQH DQH DQH DQH DQA DQA DQA DQA DQPA DQE DQE DQE DQE DQA DQA DQA DQA DQPE DQE DQE DQE DQE DQPH VDDQ DQD DQD DQD DQD VSS A A TMS Document Number: 38-05283 Rev. *K Page 7 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Pin Definitions Pin Name A0, A1, A I/O InputSynchronous InputSynchronous InputSynchronous InputSynchronous InputClock InputSynchronous InputSynchronous InputSynchronous Description Address Inputs Used to Select One of the Address Locations. Sampled at the rising edge of the CLK if ADSP or ADSC is active LOW, and CE1, CE2, and CE3 are sampled active. A1: A0 are fed to the two-bit counter. Byte Write Select Inputs, Active LOW. Qualified with BWE to conduct byte writes to the SRAM. Sampled on the rising edge of CLK. Global Write Enable Input, active LOW. When asserted LOW on the rising edge of CLK, a global write is conducted (all bytes are written, regardless of the values on BWX and BWE). Byte Write Enable Input, Active LOW. Sampled on the rising edge of CLK. This signal must be asserted LOW to conduct a byte write. Clock Input. Used to capture all synchronous inputs to the device. Also used to increment the burst counter when ADV is asserted LOW during a burst operation. Chip Enable 1 Input, Active LOW. Sampled on the rising edge of CLK. Used in conjunction with CE2 and CE3 to select or deselect the device. ADSP is ignored if CE1 is HIGH. CE1 is sampled only when a new external address is loaded. Chip Enable 2 Input, Active HIGH. Sampled on the rising edge of CLK. Used in conjunction with CE1 and CE3 to select or deselect the device. CE2 is sampled only when a new external address is loaded. Chip Enable 3 Input, Active LOW. Sampled on the rising edge of CLK. Used in conjunction with CE1 and CE2 to select or deselect the device. CE3 is sampled only when a new external address is loaded. BWA,BWB,BWC,BWD, BWE,BWF,BWG,BWH GW BWE CLK CE1 CE2 CE3 OE InputOutput Enable, Asynchronous Input, Active LOW. Controls the direction of the IO pins. Asynchronous When LOW, the IO pins behave as outputs. When deasserted HIGH, IO pins are tri-stated, and act as input data pins. OE is masked during the first clock of a read cycle when emerging from a deselected state. InputSynchronous InputSynchronous Advance Input Signal, Sampled on the Rising Edge of CLK, Active LOW. When asserted, it automatically increments the address in a burst cycle. Address Strobe from Processor, Sampled on the Rising Edge of CLK, Active LOW. When asserted LOW, addresses presented to the device are captured in the address registers. A1: A0 are also loaded into the burst counter. When ADSP and ADSC are both asserted, only ADSP is recognized. ASDP is ignored when CE1 is deasserted HIGH. Address Strobe from Controller, Sampled on the Rising Edge of CLK, Active LOW. When asserted LOW, addresses presented to the device are captured in the address registers. A1: A0 are also loaded into the burst counter. When ADSP and ADSC are both asserted, only ADSP is recognized. ADV ADSP ADSC InputSynchronous ZZ InputZZ “Sleep” Input, Active HIGH. When asserted HIGH places the device in a Asynchronous non-time-critical “sleep” condition with data integrity preserved. For normal operation, this pin has to be LOW or left floating. ZZ pin has an internal pull-down. I/OSynchronous Bidirectional Data I/O Lines. As inputs, they feed into an on-chip data register that is triggered by the rising edge of CLK. As outputs, they deliver the data contained in the memory location specified by the addresses presented during the previous clock rise of the read cycle. The direction of the pins is controlled by OE. When OE is asserted LOW, the pins behave as outputs. When HIGH, DQs and DQPX are placed in a tri-state condition. Power supply inputs to the core of the device. Ground for the core of the device. Ground for the I/O circuitry. DQs, DQPs VDD VSS VSSQ [2] Power Supply Ground IO Ground VDDQ IO Power Supply Power supply for the I/O circuitry. Note 2. Applicable for TQFP package. For BGA package VSS serves as ground for the core and the IO circuitry. Document Number: 38-05283 Rev. *K Page 8 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Pin Definitions (continued) Pin Name MODE I/O Input Static Description Selects Burst Order. When tied to GND selects linear burst sequence. When tied to VDD or left floating selects interleaved burst sequence. This is a strap pin and must remain static during device operation. Mode Pin has an internal pull up. Serial data-out to the JTAG circuit. Delivers data on the negative edge of TCK. If the JTAG feature is not used, this pin must be disconnected. This pin is not available on TQFP packages. Serial data-In to the JTAG circuit. Sampled on the rising edge of TCK. If the JTAG feature is not used, this pin can be disconnected or connected to VDD. This pin is not available on TQFP packages. Serial data-In to the JTAG circuit. Sampled on the rising edge of TCK. If the JTAG feature is not used, this pin can be disconnected or connected to VDD. This pin is not available on TQFP packages. Clock input to the JTAG circuitry. If the JTAG feature is not used, this pin must be connected to VSS. This pin is not available on TQFP packages. No Connects. Not internally connected to the die. 144M, 288M, 576M, and 1G are address expansion pins and are not internally connected to the die. within 3.0 ns (250-MHz device) if OE is active LOW. The only exception occurs when the SRAM is emerging from a deselected state to a selected state, its outputs are always tri-stated during the first cycle of the access. After the first cycle of the access, the outputs are controlled by the OE signal. Consecutive single read cycles are supported. After the SRAM is deselected at clock rise by the chip select and either ADSP or ADSC signals, its output tri-states immediately. TDO JTAG Serial Output Synchronous JTAG Serial Input Synchronous JTAG Serial Input Synchronous JTAG Clock – TDI TMS TCK NC Functional Overview All synchronous inputs pass through input registers controlled by the rising edge of the clock. All data outputs pass through output registers controlled by the rising edge of the clock. Maximum access delay from the clock rise (tCO) is 3.0 ns (250 MHz device). The CY7C1480V33/CY7C1482V33/CY7C1486V33 supports secondary cache in systems using either a linear or interleaved burst sequence. The interleaved burst order supports Pentium and i486 processors. The linear burst sequence is suited for processors that use a linear burst sequence. The burst order is user selectable, and is determined by sampling the MODE input. Accesses can be initiated with either the Processor Address Strobe (ADSP) or the Controller Address Strobe (ADSC). Address advancement through the burst sequence is controlled by the ADV input. A two-bit on-chip wraparound burst counter captures the first address in a burst sequence and automatically increments the address for the rest of the burst access. Byte Write operations are qualified with the Byte Write Enable (BWE) and Byte Write Select (BWX) inputs. A Global Write Enable (GW) overrides all byte write inputs and writes data to all four bytes. All writes are simplified with on-chip synchronous self-timed write circuitry. Three synchronous Chip Selects (CE1, CE2, CE3) and an asynchronous Output Enable (OE) provide easy bank selection and output tri-state control. ADSP is ignored if CE1 is HIGH. Single Write Accesses Initiated by ADSP This access is initiated when both of the following conditions are satisfied at clock rise: (1) ADSP is asserted LOW, and (2) CE1, CE2, CE3 are all asserted active. The address presented to A is loaded into the address register and the address advancement logic while being delivered to the memory array. The write signals (GW, BWE, and BWX) and ADV inputs are ignored during this first cycle. ADSP triggered write accesses require two clock cycles to complete. If GW is asserted LOW on the second clock rise, the data presented to the DQs inputs is written into the corresponding address location in the memory array. If GW is HIGH, then the write operation is controlled by BWE and BWX signals. The CY7C1480V33/CY7C1482V33/CY7C1486V33 provides byte write capability that is described in the Truth Table for Read/Write on page 12. Asserting the Byte Write Enable input (BWE) with the selected Byte Write (BWX) input, will selectively write to only the desired bytes. Bytes not selected during a Byte Write operation will remain unaltered. A synchronous self-timed Write mechanism has been provided to simplify the Write operations. Because CY7C1480V33/CY7C1482V33/CY7C1486V33 is a common I/O device, the Output Enable (OE) must be deasserted HIGH before presenting data to the DQs inputs. Doing so will tri-state the output drivers. As a safety precaution, DQs are automatically tri-stated whenever a Write cycle is detected, regardless of the state of OE. Single Read Accesses This access is initiated when the following conditions are satisfied at clock rise: (1) ADSP or ADSC is asserted LOW, (2) CE1, CE2, CE3 are all asserted active, and (3) the write signals (GW, BWE) are all deasserted HIGH. ADSP is ignored if CE1 is HIGH. The address presented to the address inputs (A) is stored into the address advancement logic and the Address Register while being presented to the memory array. The corresponding data is allowed to propagate to the input of the Output Registers. At the rising edge of the next clock the data is allowed to propagate through the output register and onto the data bus Document Number: 38-05283 Rev. *K Page 9 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Single Write Accesses Initiated by ADSC ADSC Write accesses are initiated when the following conditions are satisfied: (1) ADSC is asserted LOW, (2) ADSP is deasserted HIGH, (3) CE1, CE2, CE3 are all asserted active, and (4) the appropriate combination of the Write inputs (GW, BWE, and BWX) are asserted active to conduct a Write to the desired byte(s). ADSC-triggered Write accesses require a single clock cycle to complete. The address presented to A is loaded into the address register and the address advancement logic while being delivered to the memory array. The ADV input is ignored during this cycle. If a global Write is conducted, the data presented to the DQs is written into the corresponding address location in the memory core. If a Byte Write is conducted, only the selected bytes are written. Bytes not selected during a Byte Write operation will remain unaltered. A synchronous self-timed Write mechanism has been provided to simplify the Write operations. Because CY7C1480V33/CY7C1482V33/CY7C1486V33 is a common I/O device, the Output Enable (OE) must be deasserted HIGH before presenting data to the DQs inputs. Doing so will tri-state the output drivers. As a safety precaution, DQs are automatically tri-stated whenever a Write cycle is detected, regardless of the state of OE. Sleep Mode The ZZ input pin is an asynchronous input. Asserting ZZ places the SRAM in a power conservation “sleep” mode. Two clock cycles are required to enter into or exit from this “sleep” mode. While in this mode, data integrity is guaranteed. Accesses pending when entering the “sleep” mode are not considered valid nor is the completion of the operation guaranteed. The device must be deselected before entering the “sleep” mode. CE1, CE2, CE3, ADSP, and ADSC must remain inactive for the duration of tZZREC after the ZZ input returns LOW. Interleaved Burst Address Table (MODE = Floating or VDD) First Address A1: A0 00 01 10 11 Second Address A1: A0 01 00 11 10 Third Address A1: A0 10 11 00 01 Fourth Address A1: A0 11 10 01 00 Burst Sequences The CY7C1480V33/CY7C1482V33/CY7C1486V33 provides a two-bit wraparound counter, fed by A1: A0, that implements either an interleaved or linear burst sequence. The interleaved burst sequence is designed specifically to support Intel Pentium applications. The linear burst sequence is designed to support processors that follow a linear burst sequence. The burst sequence is user selectable through the MODE input. Asserting ADV LOW at clock rise will automatically increment the burst counter to the next address in the burst sequence. Both Read and Write burst operations are supported. Linear Burst Address Table (MODE = GND) First Address A1: A0 00 01 10 11 Second Address A1: A0 01 10 11 00 Third Address A1: A0 10 11 00 01 Fourth Address A1: A0 11 00 01 10 ZZ Mode Electrical Characteristics Parameter IDDZZ tZZS tZZREC tZZI tRZZI Description Sleep mode standby current Device operation to ZZ ZZ recovery time ZZ Active to Sleep current ZZ Inactive to exit Sleep current Test Conditions ZZ > VDD– 0.2 V ZZ > VDD – 0.2 V ZZ < 0.2 V This parameter is sampled This parameter is sampled Min – – 2tCYC – 0 Max 120 2tCYC – 2tCYC – Unit mA ns ns ns ns Document Number: 38-05283 Rev. *K Page 10 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Truth Table The Truth Table for CY7C1480V33, CY7C1482V33, and CY7C1486V33 follows.[3, 4, 5, 6, 7] Operation Deselect Cycle, Power Down Deselect Cycle, Power Down Deselect Cycle, Power Down Deselect Cycle, Power Down Deselect Cycle, Power Down Sleep Mode, Power Down READ Cycle, Begin Burst READ Cycle, Begin Burst WRITE Cycle, Begin Burst READ Cycle, Begin Burst READ Cycle, Begin Burst READ Cycle, Continue Burst READ Cycle, Continue Burst READ Cycle, Continue Burst READ Cycle, Continue Burst WRITE Cycle, Continue Burst WRITE Cycle, Continue Burst READ Cycle, Suspend Burst READ Cycle, Suspend Burst READ Cycle, Suspend Burst READ Cycle, Suspend Burst WRITE Cycle,Suspend Burst WRITE Cycle,Suspend Burst Add. Used None None None None None None External External External External External Next Next Next Next Next Next Current Current Current Current Current Current CE1 CE2 CE3 H L L L L X L L L L L X X H H X H X X H H X H X L X L X X H H H H H X X X X X X X X X X X X X X H X H X L L L L L X X X X X X X X X X X X ZZ L L L L L H L L L L L L L L L L L L L L L L L ADSP X L L H H X L L H H H H H X X H X H H X X H X ADSC L X X L L X X X L L L H H H H H H H H H H H H ADV X X X X X X X X X X X L L L L L L H H H H H H WRITE X X X X X X X X L H H H H H H L L H H H H L L OE X X X X X X L H X L H L H L H X X L H L H X X CLK L–H L–H L–H L–H L–H X L–H L–H L–H L–H L–H L–H L–H L–H L–H L–H L–H L–H L–H L–H L–H L–H L–H DQ Tri-State Tri-State Tri-State Tri-State Tri-State Tri-State Q Tri-State D Q Tri-State Q Tri-State Q Tri-State D D Q Tri-State Q Tri-State D D Notes 3. X = “Don't Care.” H = Logic HIGH, L = Logic LOW. 4. WRITE = L when any one or more Byte Write enable signals and BWE = L or GW = L. WRITE = H when all Byte write enable signals, BWE, GW = H. 5. The DQ pins are controlled by the current cycle and the OE signal. OE is asynchronous and is not sampled with the clock. 6. The SRAM always initiates a read cycle when ADSP is asserted, regardless of the state of GW, BWE, or BWX. Writes may occur only on subsequent clocks after the ADSP or with the assertion of ADSC. As a result, OE must be driven HIGH before the start of the write cycle to allow the outputs to tri-state. OE is a “don't care” for the remainder of the write cycle. 7. OE is asynchronous and is not sampled with the clock rise. It is masked internally during write cycles. During a read cycle all data bits are Tri-State when OE is inactive or when the device is deselected, and all data bits behave as output when OE is active (LOW). Document Number: 38-05283 Rev. *K Page 11 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Truth Table for Read/Write The following is a Truth Table for Read/Write for the CY7C1480V33.[8] Function Read Read Write Byte A – (DQA and DQPA) Write Byte B – (DQB and DQPB) Write Bytes B, A Write Byte C – (DQC and DQPC) Write Bytes C, A Write Bytes C, B Write Bytes C, B, A Write Byte D – (DQD and DQPD) Write Bytes D, A Write Bytes D, B Write Bytes D, B, A Write Bytes D, C Write Bytes D, C, A Write Bytes D, C, B Write All Bytes Write All Bytes GW H H H H H H H H H H H H H H H H H L BWE H L L L L L L L L L L L L L L L L X BWD X H H H H H H H H L L L L L L L L X BWC X H H H H L L L L H H H H L L L L X BWB X H H L L H H L L H H L L H H L L X BWA X H L H L H L H L H L H L H L H L X Truth Table for Read/Write The following is a Truth Table for Read/Write for the CY7C1482V33.[8] Function Read Read Write Byte A – (DQA and DQPA) Write Byte B – (DQB and DQPB) Write Bytes B, A Write All Bytes Write All Bytes GW H H H H H H L BWE H L L L L L X BWB X H H L L L X BWA X H L H L L X Note 8. The DQ pins are controlled by the current cycle and the OE signal. OE is asynchronous and is not sampled with the clock. Document Number: 38-05283 Rev. *K Page 12 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Truth Table for Read/Write The following is a Truth Table for Read/Write for the CY7C1486V33.[9] Function Read Read Write Byte x – (DQx and DQPx) Write All Bytes Write All Bytes GW H H H H L BWE H L L L X BWX X All BW = H L All BW = L X Note 9. BWx represents any byte write signal BW[0..7].To enable any byte write BWx, a Logic LOW signal should be applied at clock rise. Any number of bye writes can be enabled at the same time for any given write. Document Number: 38-05283 Rev. *K Page 13 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 IEEE 1149.1 Serial Boundary Scan (JTAG) The CY7C1480V33/CY7C1482V33/CY7C1486V33 incorporates a serial boundary scan test access port (TAP). This port operates in accordance with IEEE Standard 1149.1-1990 but does not have the set of functions required for full 1149.1 compliance. These functions from the IEEE specification are excluded because their inclusion places an added delay in the critical speed path of the SRAM. Note that the TAP controller functions in a manner that does not conflict with the operation of other devices using 1149.1 fully compliant TAPs. The TAP operates using JEDEC-standard 3.3 V or 2.5 V I/O logic levels. The CY7C1480V33/CY7C1482V33/CY7C1486V33 contains a TAP controller, instruction register, boundary scan register, bypass register, and ID register. Test Mode Select (TMS) The TMS input gives commands to the TAP controller and is sampled on the rising edge of TCK. You can leave this ball unconnected if the TAP is not used. The ball is pulled up internally, resulting in a logic HIGH level. Test Data-In (TDI) The TDI ball serially inputs information into the registers and can be connected to the input of any of the registers. The register between TDI and TDO is chosen by the instruction that is loaded into the TAP instruction register. For information about loading the instruction register, see the TAP Controller State Diagram. TDI is internally pulled up and can be unconnected if the TAP is unused in an application. TDI is connected to the most significant bit (MSB) of any register. (See TAP Controller Block Diagram.) Test Data-Out (TDO) The TDO output ball serially clocks data-out from the registers. The output is active depending upon the current state of the TAP state machine. The output changes on the falling edge of TCK. TDO is connected to the least significant bit (LSB) of any register. (See TAP Controller State Diagram.) Disabling the JTAG Feature It is possible to operate the SRAM without using the JTAG feature. To disable the TAP controller, tie TCK LOW (VSS) to prevent device clocking. TDI and TMS are internally pulled up and may be unconnected. They may alternatively be connected to VDD through a pull up resistor. TDO must be left unconnected. At power up, the device comes up in a reset state, which will not interfere with the operation of the device. TAP Controller Block Diagram 0 Bypass Register 210 TAP Controller State Diagram 1 TEST-LOGIC RESET 0 0 RUN-TEST/ IDLE 1 SELECT DR-SCA N 0 1 CAPTURE-DR 0 SHIFT-DR 1 EXIT1-DR 0 PAUSE-DR 1 0 EXIT2-DR 1 UPDATE-DR 1 0 0 0 1 0 1 1 SELECT IR-SCAN 0 CAPTURE-IR 0 SHIFT-IR 1 EXIT1-IR 0 PAUSE-IR 1 EXIT2-IR 1 UPDATE-IR 1 0 0 1 0 1 TDI Selection Circuitry Instruction Register 31 30 29 . . . 2 1 0 Selection Circuitry TDO Identification Register x. . . . .210 Boundary Scan Register TCK TM S TAP CONTROLLER Performing a TAP Reset Perform a RESET by forcing TMS HIGH (VDD) for five rising edges of TCK. This RESET does not affect the operation of the SRAM and may be performed while the SRAM is operating. At power up, the TAP is reset internally to ensure that TDO comes up in a High Z state. The 0/1 next to each state represents the value of TMS at the rising edge of TCK. TAP Registers Registers are connected between the TDI and TDO balls and enable data to be scanned into and out of the SRAM test circuitry. Only one register can be selected at a time through the instruction register. Data is serially loaded into the TDI ball on the rising edge of TCK. Data is output on the TDO ball on the falling edge of TCK. Test Access Port (TAP) Test Clock (TCK) The test clock is used only with the TAP controller. All inputs are captured on the rising edge of TCK. All outputs are driven from the falling edge of TCK. Document Number: 38-05283 Rev. *K Page 14 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Instruction Register Three-bit instructions can be serially loaded into the instruction register. This register is loaded when it is placed between the TDI and TDO balls as shown in the TAP Controller Block Diagram on page 14. At power up, the instruction register is loaded with the IDCODE instruction. It is also loaded with the IDCODE instruction if the controller is placed in a reset state, as described in the previous section. When the TAP controller is in the Capture-IR state, the two least significant bits are loaded with a binary “01” pattern to enable fault isolation of the board-level serial test data path. Bypass Register To save time when serially shifting data through registers, it is sometimes advantageous to skip certain chips. The bypass register is a single-bit register that can be placed between the TDI and TDO balls. This enables data to be shifted through the SRAM with minimal delay. The bypass register is set LOW (VSS) when the BYPASS instruction is executed. Boundary Scan Register The boundary scan register is connected to all the input and bidirectional balls on the SRAM. The ×36 configuration has a 73-bit-long register, and the ×18 configuration has a 54-bit-long register. The boundary scan register is loaded with the contents of the RAM IO ring when the TAP controller is in the Capture-DR state and is then placed between the TDI and TDO balls when the controller is moved to the Shift-DR state. The EXTEST, SAMPLE/PRELOAD, and SAMPLE Z instructions can be used to capture the contents of the I/O ring. The Boundary Scan Order tables show the order in which the bits are connected. Each bit corresponds to one of the bumps on the SRAM package. The MSB of the register is connected to TDI and the LSB is connected to TDO. Identification (ID) Register The ID register is loaded with a vendor-specific, 32-bit code during the Capture-DR state when the IDCODE command is loaded in the instruction register. The IDCODE is hardwired into the SRAM and can be shifted out when the TAP controller is in the Shift-DR state. The ID register has a vendor code and other information described in Identification Register Definitions on page 17. rather, it performs a capture of the IO ring when these instructions are executed. Instructions are loaded into the TAP controller during the Shift-IR state when the instruction register is placed between TDI and TDO. During this state, instructions are shifted through the instruction register through the TDI and TDO balls. To execute the instruction after it is shifted in, the TAP controller must be moved into the Update-IR state. EXTEST EXTEST is a mandatory 1149.1 instruction, which is to be executed whenever the instruction register is loaded with all zeros. EXTEST is not implemented in this SRAM TAP controller, and therefore this device is not compliant to 1149.1. The TAP controller does recognize an all-zero instruction. When an EXTEST instruction is loaded into the instruction register, the SRAM responds as if a SAMPLE/PRELOAD instruction has been loaded. There is one difference between the two instructions. Unlike the SAMPLE/PRELOAD instruction, EXTEST places the SRAM outputs in a High Z state. IDCODE The IDCODE instruction causes a vendor-specific, 32-bit code to be loaded into the instruction register. It also places the instruction register between the TDI and TDO balls and enables the IDCODE to be shifted out of the device when the TAP controller enters the Shift-DR state. The IDCODE instruction is loaded into the instruction register at power up or whenever the TAP controller is in a test logic reset state. SAMPLE Z The SAMPLE Z instruction causes the boundary scan register to be connected between the TDI and TDO balls when the TAP controller is in a Shift-DR state. It also places all SRAM outputs into a High Z state. SAMPLE/PRELOAD SAMPLE/PRELOAD is a 1149.1 mandatory instruction. The PRELOAD portion of this instruction is not implemented, so the device TAP controller is not fully 1149.1 compliant. When the SAMPLE/PRELOAD instruction is loaded into the instruction register and the TAP controller is in the Capture-DR state, a snapshot of data on the inputs and bidirectional balls is captured in the boundary scan register. Be aware that the TAP controller clock can only operate at a frequency up to 10 MHz, while the SRAM clock operates more than an order of magnitude faster. Because there is a large difference in the clock frequencies, it is possible that during the Capture-DR state, an input or output may undergo a transition. The TAP may then try to capture a signal while in transition (metastable state). This does not harm the device, but there is no guarantee as to the value that may be captured. Repeatable results may not be possible. To guarantee that the boundary scan register will capture the correct value of a signal, the SRAM signal must be stabilized long enough to meet the TAP controller’s capture setup plus hold time (tCS plus tCH). TAP Instruction Set Overview Eight different instructions are possible with the three-bit instruction register. All combinations are listed in Identification Codes on page 18. Three of these instructions are listed as RESERVED and should not be used. The other five instructions are described in detail below. The TAP controller used in this SRAM is not fully compliant to the 1149.1 convention because some of the mandatory 1149.1 instructions are not fully implemented. The TAP controller cannot be used to load address data or control signals into the SRAM and cannot preload the IO buffers. The SRAM does not implement the 1149.1 commands EXTEST or INTEST or the PRELOAD portion of SAMPLE/PRELOAD; Document Number: 38-05283 Rev. *K Page 15 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 The SRAM clock input might not be captured correctly if there is no way in a design to stop (or slow) the clock during a SAMPLE/PRELOAD instruction. If this is an issue, it is still possible to capture all other signals and simply ignore the value of the CLK captured in the boundary scan register. After the data is captured, the data can be shifted out by putting the TAP into the Shift-DR state. This places the boundary scan register between the TDI and TDO balls. Note that because the PRELOAD part of the command is not implemented, putting the TAP to the Update-DR state while performing a SAMPLE/PRELOAD instruction has the same effect as the Pause-DR command. BYPASS When the BYPASS instruction is loaded in the instruction register and the TAP is placed in a Shift-DR state, the bypass register is placed between the TDI and TDO balls. The advantage of the BYPASS instruction is that it shortens the boundary scan path when multiple devices are connected together on a board. Reserved These instructions are not implemented but are reserved for future use. Do not use these instructions. TAP Timing 1 Test Clock (TCK ) t TM SS 2 3 4 5 6 t TH t TM SH t TL t CY C T est M ode Select (TM S) t TDIS t TDIH Test Data-In (TDI) t TDOV t TDOX Test Data-Out (TDO) DON’T CA RE UNDEFINED TAP AC Switching Characteristics Over the Operating Range[10, 11] Parameter Clock tTCYC tTF tTH tTL tTDOV tTDOX tTMSS tTDIS tCS Hold Times tTMSH tTDIH tCH TMS Hold after TCK Clock Rise TDI Hold after Clock Rise Capture Hold after Clock Rise 5 5 5 – – – ns ns ns TCK Clock Cycle Time TCK Clock Frequency TCK Clock HIGH Time TCK Clock LOW Time TCK Clock LOW to TDO Valid TCK Clock LOW to TDO Invalid TMS Setup to TCK Clock Rise TDI Setup to TCK Clock Rise Capture Setup to TCK Rise 50 – 20 20 – 0 5 5 5 – 20 – – 10 – – – – ns MHz ns ns ns ns ns ns ns Description Min Max Unit Output Times Setup Times Notes 10. tCS and tCH refer to the setup and hold time requirements of latching data from the boundary scan register. 11. Test conditions are specified using the load in TAP AC Test Conditions. tR/tF = 1 ns. Document Number: 38-05283 Rev. *K Page 16 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 3.3 V TAP AC Test Conditions Input pulse levels ...............................................VSS to 3.3 V Input rise and fall times ...................................................1 ns Input timing reference levels ......................................... 1.5 V Output reference levels ................................................ 1.5 V Test load termination supply voltage ............................ 1.5 V 2.5 V TAP AC Test Conditions Input pulse levels................................................ VSS to 2.5 V Input rise and fall time .....................................................1 ns Input timing reference levels........................................ 1.25 V Output reference levels ............................................... 1.25 V Test load termination supply voltage ........................... 1.25 V 3.3 V TAP AC Output Load Equivalent 1.5V 50 Ω TDO Z O= 50 Ω 20pF 2.5 V TAP AC Output Load Equivalent 1.25V 50 Ω TDO Z O= 50 Ω 20pF TAP DC Electrical Characteristics and Operating Conditions (0 °C < TA < +70 °C; VDD = 3.135 to 3.6 V unless otherwise noted)[12] Parameter VOH1 VOH2 VOL1 VOL2 VIH VIL IX Description Output HIGH Voltage Output HIGH Voltage Output LOW Voltage Output LOW Voltage Input HIGH Voltage Input LOW Voltage Input Load Current GND < VIN < VDDQ Test Conditions IOH = –4.0 mA, VDDQ = 3.3 V IOH = –1.0 mA, VDDQ = 2.5 V IOH = –100 µA IOL = 8.0 mA IOL = 1.0 mA IOL = 100 µA VDDQ = 3.3 V VDDQ = 2.5 V VDDQ = 3.3 V VDDQ = 2.5 V VDDQ = 3.3 V VDDQ = 2.5 V VDDQ = 3.3 V VDDQ = 2.5 V VDDQ = 3.3 V VDDQ = 2.5 V Min 2.4 2.0 2.9 2.1 – – – – 2.0 1.7 –0.3 –0.3 –5 Max – – – – 0.4 0.4 0.2 0.2 VDD + 0.3 VDD + 0.3 0.8 0.7 5 Unit V V V V V V V V V V V V µA Identification Register Definitions Instruction Field Revision Number (31:29) Device Depth (28:24) Architecture/Memory Type(23:18) Bus Width/Density(17:12) Cypress JEDEC ID Code (11:1) ID Register Presence Indicator (0) Notes 12. All voltages referenced to VSS (GND). CY7C1480V33 CY7C1482V33 CY7C1486V33 (2 M × 36) (4 M × 18) (1 M × 72) 000 01011 000000 100100 00000110100 1 000 01011 000000 010100 00000110100 1 000 01011 000000 110100 Description Describes the version number Reserved for internal use Defines memory type and architecture Defines width and density 00000110100 Enables unique identification of SRAM vendor 1 Indicates the presence of an ID register Document Number: 38-05283 Rev. *K Page 17 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Scan Register Sizes Register Name Instruction Bypass ID Boundary Scan Order – 165-ball FBGA Boundary Scan Order – 209-ball BGA Bit Size (× 36) 3 1 32 73 – Bit Size (× 18) 3 1 32 54 – Bit Size (× 72) 3 1 32 – 112 Identification Codes Instruction EXTEST IDCODE SAMPLE Z RESERVED SAMPLE/PRELOAD RESERVED RESERVED BYPASS Code 000 001 010 011 100 101 110 111 Captures the IO ring contents. Loads the ID register with the vendor ID code and places the register between TDI and TDO. This operation does not affect SRAM operations. Captures IO ring contents. Places the boundary scan register between TDI and TDO. Forces all SRAM output drivers to a High Z state. Do Not Use: This instruction is reserved for future use. Captures IO ring contents. Places the boundary scan register between TDI and TDO. Does not affect SRAM operation. Do Not Use: This instruction is reserved for future use. Do Not Use: This instruction is reserved for future use. Places the bypass register between TDI and TDO. This operation does not affect SRAM operations. Description Document Number: 38-05283 Rev. *K Page 18 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Boundary Scan Exit Order (2 M × 36) Bit # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 165-ball ID C1 D1 E1 D2 E2 F1 G1 F2 G2 J1 K1 L1 J2 M1 N1 K2 L2 M2 R1 R2 Bit # 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 165-ball ID R3 P2 R4 P6 R6 N6 P11 R8 P3 P4 P8 P9 P10 R9 R10 R11 N11 M11 L11 M10 Bit # 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 165-ball ID L10 K11 J11 K10 J10 H11 G11 F11 E11 D10 D11 C11 G10 F10 E10 A10 B10 A9 B9 A8 Bit # 61 62 63 64 65 66 67 68 69 70 71 72 73 165-ball ID B8 A7 B7 B6 A6 B5 A5 A4 B4 B3 A3 A2 B2 Boundary Scan Exit Order (4 M × 18) Bit # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 165-ball ID D2 E2 F2 G2 J1 K1 L1 M1 N1 R1 R2 R3 P2 R4 P6 R6 N6 P11 Bit # 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 165-ball ID R8 P3 P4 P8 P9 P10 R9 R10 R11 M10 L10 K10 J10 H11 G11 F11 E11 D11 Bit # 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 165-ball ID C11 A11 A10 B10 A9 B9 A8 B8 A7 B7 B6 A6 B5 A4 B3 A3 A2 B2 Document Number: 38-05283 Rev. *K Page 19 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Boundary Scan Exit Order (1 M × 72) Bit # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 209-ball ID A1 A2 B1 B2 C1 C2 D1 D2 E1 E2 F1 F2 G1 G2 H1 H2 J1 J2 L1 L2 M1 M2 N1 N2 P1 P2 R2 R1 Bit # 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 209-ball ID T1 T2 U1 U2 V1 V2 W1 W2 T6 V3 V4 U4 W5 V6 W6 U3 U9 V5 U5 U6 W7 V7 U7 V8 V9 W11 W10 V11 Bit # 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 209-ball ID V10 U11 U10 T11 T10 R11 R10 P11 P10 N11 N10 M11 M10 L11 L10 P6 J11 J10 H11 H10 G11 G10 F11 F10 E10 E11 D11 D10 Bit # 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 209-ball ID C11 C10 B11 B10 A11 A10 A9 U8 A7 A5 A6 D6 B6 D7 K3 A8 B4 B3 C3 C4 C8 C9 B9 B8 A4 C6 B7 A3 Document Number: 38-05283 Rev. *K Page 20 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Maximum Ratings Exceeding the maximum ratings may impair the useful life of the device. These user guidelines are not tested. Storage Temperature ............................... –65 C to +150 C Ambient Temperature with Power Applied ......................................... –55 C to +125 C Supply Voltage on VDD Relative to GND .....–0.3 V to +4.6 V Supply Voltage on VDDQ Relative to GND .... –0.3 V to +VDD DC Voltage Applied to Outputs in Tri-State .........................................–0.5 V to VDDQ + 0.5 V DC Input Voltage ................................. –0.5 V to VDD + 0.5 V Current into Outputs (LOW)......................................... 20 mA Static Discharge Voltage......................................... > 2001 V (MIL-STD-883, Method 3015) Latch-up Current.................................................... > 200 mA Operating Range Ambient Temperature Commercial 0 C to +70 C Industrial –40 C to +85C Range VDD 3.3 V– 5% / + 10% VDDQ 2.5 V – 5% to VDD Electrical Characteristics Over the Operating Range[13, 14] Parameter VDD VDDQ VOH VOL VIH VIL IX Description Power Supply Voltage IO Supply Voltage Output HIGH Voltage Output LOW Voltage Input HIGH Input LOW Voltage[13] Voltage[13] For 3.3 V IO For 2.5 V IO For 3.3 V IO, IOH = –4.0 mA For 2.5 V IO, IOH = –1.0 mA For 3.3 V IO, IOL = 8.0 mA For 2.5 V IO, IOL = 1.0 mA For 3.3 V IO For 2.5 V IO For 3.3 V IO For 2.5 V IO Input Leakage Current except ZZ and MODE GND  VI  VDDQ Test Conditions Min 3.135 3.135 2.375 2.4 2.0 – – 2.0 1.7 –0.3 –0.3 –5 –30 – –5 – –5 4.0-ns cycle, 250 MHz 5.0-ns cycle, 200 MHz 6.0-ns cycle, 167 MHz ISB1 Automatic CE Power Down Current—TTL Inputs VDD = Max, Device Deselected, VIN  VIH or VIN  VIL, f = fMAX = 1/tCYC 4.0-ns cycle, 250 MHz 5.0-ns cycle, 200 MHz 6.0-ns cycle, 167 MHz – – – – – – – Max 3.6 VDD 2.625 – – 0.4 0.4 VDD + 0.3 V VDD + 0.3 V 0.8 0.7 5 – 5 – 30 5 500 500 450 245 245 245 120 Unit V V V V V V V V V V V A A A A A A mA mA mA mA mA mA mA Input Current of MODE Input = VSS Input = VDD Input Current of ZZ IOZ IDD Input = VSS Input = VDD Output Leakage Current GND  VI  VDDQ, Output Disabled VDD Operating Supply Current VDD = Max, IOUT = 0 mA, f = fMAX = 1/tCYC ISB2 VDD = Max, Device Deselected, Automatic CE All speeds Power Down VIN  0.3 V or VIN > VDDQ – 0.3 V, f = 0 Current—CMOS Inputs Notes 13. Overshoot: VIH(AC) < VDD +1.5V (Pulse width less than tCYC/2). Undershoot: VIL(AC) > –2V (Pulse width less than tCYC/2). 14. Power up: Assumes a linear ramp from 0V to VDD(min.) within 200 ms. During this time VIH < VDD and VDDQ < VDD. Document Number: 38-05283 Rev. *K Page 21 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Electrical Characteristics (continued) Over the Operating Range[13, 14] Parameter ISB3 Description Test Conditions 4.0-ns cycle, 250 MHz 5.0-ns cycle, 200 MHz 6.0-ns cycle, 167 MHz All speeds Min – – – – Max 245 245 245 135 Unit mA mA mA mA Automatic CE VDD = Max, Device Deselected, or Power Down VIN  0.3 V or VIN > VDDQ – 0.3 V, Current—CMOS Inputs f = fMAX = 1/tCYC Automatic CE Power Down Current—TTL Inputs VDD = Max, Device Deselected, VIN  VIH or VIN  VIL, f = 0 ISB4 Capacitance[15] Parameter CADDRESS CDATA CCTRL CCLK CI/O Description Address Input Capacitance Data Input Capacitance Control Input Capacitance Clock Input Capacitance Input/Output Capacitance Test Conditions TA = 25 C, f = 1 MHz, VDD = 3.3 V, VDDQ = 2.5 V 100-pin TQFP 165-ball FBGA 209-ball FBGA Unit Max Max Max 6 5 8 6 5 6 5 8 6 5 6 5 8 6 5 pF pF pF pF pF Thermal Resistance[15] Parameter JA JC Description Thermal Resistance (Junction to Ambient) Thermal Resistance (Junction to Case) Test Conditions Test conditions follow standard test methods and procedures for measuring thermal impedance, according to EIA/JESD51. 100-pin TQFP 165-ball FBGA 209-ball FBGA Unit Package Package Package 24.63 2.28 16.3 2.1 15.2 1.7 C/W C/W Note 15. Tested initially and after any design or process change that may affect these parameters. Document Number: 38-05283 Rev. *K Page 22 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 AC Test Loads and Waveforms 3.3 V I/O Test Load OUTPUT Z0 = 50  3.3 V OUTPUT RL = 50  R = 317  VDDQ 5 pF GND R = 351  10% ALL INPUT PULSES 90% 90% 10%  1 ns VL = 1.5 V  1 ns (a) 2.5 V I/O Test Load OUTPUT Z0 = 50  2.5V INCLUDING JIG AND SCOPE (b) (c) R = 1667  VDDQ 5 pF GND R = 1538  10% ALL INPUT PULSES 90% 90% 10%  1 ns OUTPUT RL = 50  VL = 1.25 V  1 ns (a) INCLUDING JIG AND SCOPE (b) (c) Switching Characteristics Over the Operating Range[16, 17] Parameter tPOWER Clock tCYC tCH tCL tCO tDOH tCLZ tCHZ tOEV tOELZ tOEHZ Clock Cycle Time Clock HIGH Clock LOW Data Output Valid After CLK Rise Data Output Hold After CLK Rise Clock to Low Z[19, 20, 21] Clock to High Z[19, 20, 21] OE LOW to Output Valid OE LOW to Output Low Z[19, 20, 21] Z[19, 20, 21] OE HIGH to Output High 4.0 2.0 2.0 – 1.3 1.3 – – 0 – – – – 3.0 – – 3.0 3.0 – 3.0 5.0 2.0 2.0 – 1.3 1.3 – – 0 – – – – 3.0 – – 3.0 3.0 – 3.0 6.0 2.4 2.4 – 1.5 1.5 – – 0 – – – – 3.4 – – 3.4 3.4 – 3.4 ns ns ns ns ns ns ns ns ns ns Description VDD(Typical) to the First Access[18] 250 MHz Min 1 Max – 200 MHz Min 1 Max – 167 MHz Min 1 Max – Unit ms Output Times Notes 16. Timing reference level is 1.5V when VDDQ = 3.3V and is 1.25V when VDDQ = 2.5V. 17. Test conditions shown in (a) of AC Test Loads and Waveforms unless otherwise noted. 18. This part has an internal voltage regulator; tPOWER is the time that the power needs to be supplied above VDD(minimum) initially before a read or write operation can be initiated. 19. tCHZ, tCLZ,tOELZ, and tOEHZ are specified with AC test conditions shown in part (b) of “AC Test Loads and Waveforms” on page 23. Transition is measured ±200 mV from steady-state voltage. 20. At any possible voltage and temperature, tOEHZ is less than tOELZ and tCHZ is less than tCLZ to eliminate bus contention between SRAMs when sharing the same data bus. These specifications do not imply a bus contention condition, but reflect parameters guaranteed over worst case user conditions. Device is designed to achieve High-Z before Low-Z under the same system conditions. 21. This parameter is sampled and not 100% tested. Document Number: 38-05283 Rev. *K Page 23 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Switching Characteristics (continued) Over the Operating Range[16, 17] Parameter Setup Times tAS tADS tADVS tWES tDS tCES Hold Times tAH tADH tADVH tWEH tDH tCEH Address Hold After CLK Rise ADSP, ADSC Hold After CLK Rise ADV Hold After CLK Rise GW, BWE, BWX Hold After CLK Rise Data Input Hold After CLK Rise Chip Enable Hold After CLK Rise 0.4 0.4 0.4 0.4 0.4 0.4 – – – – – – 0.4 0.4 0.4 0.4 0.4 0.4 – – – – – – 0.5 0.5 0.5 0.5 0.5 0.5 – – – – – – ns ns ns ns ns ns Address Setup Before CLK Rise ADSC, ADSP Setup Before CLK Rise ADV Setup Before CLK Rise GW, BWE, BWX Setup Before CLK Rise Data Input Setup Before CLK Rise Chip Enable Setup Before CLK Rise 1.4 1.4 1.4 1.4 1.4 1.4 – – – – – – 1.4 1.4 1.4 1.4 1.4 1.4 – – – – – – 1.5 1.5 1.5 1.5 1.5 1.5 – – – – – – ns ns ns ns ns ns Description 250 MHz Min Max 200 MHz Min Max 167 MHz Min Max Unit Document Number: 38-05283 Rev. *K Page 24 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Switching Waveforms Read Cycle Timing[22] t CYC CLK t CH t CL t ADS t ADH ADSP t ADS ADSC t AS A1 t WES GW, BWE, BWx t CES CE t ADVS ADV ADV suspends burst. OE t OEV t OEHZ t CLZ D ata Out (Q) High-Z Q(A1) t CO Burst wraps around to its initial state Single READ BURST READ t OELZ Q(A2) t CO t DOH Q(A2 + 1) Q(A2 + 2) Q(A2 + 3) Q(A2) t CHZ Q(A2 + 1) tADVH tCEH Deselect cycle tWEH tAH tADH ADDRESS A2 A3 Burst continued with new base address DON’T CARE UNDEFINED Note 22. On this diagram, when CE is LOW: CE1 is LOW, CE2 is HIGH and CE3 is LOW. When CE is HIGH: CE1 is HIGH, CE2 is LOW, or CE3 is HIGH. Document Number: 38-05283 Rev. *K Page 25 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Switching Waveforms (continued) Write Cycle Timing[23, 24] t CYC CLK tCH t ADS ADSP ADSC extends burst t ADS tADH tADH tCL t ADS ADSC t AS A1 tAH tADH ADDRESS A2 Byte write signals are ignored for first cycle when ADSP initiates burst A3 t WES tWEH BWE, BW X t WES tWEH GW t CES CE t t ADVS ADVH ADV ADV suspends burst tCEH OE t DS tDH Data In (D) High-Z t OEHZ D(A1) D(A2) D(A2 + 1) D(A2 + 1) D(A2 + 2) D(A2 + 3) D(A3) D(A3 + 1) D(A3 + 2) D ata Out (Q) BURST READ Single WRITE BURST WRITE Extended BURST WRITE DON’T CARE UNDEFINED Notes 23. On this diagram, when CE is LOW: CE1 is LOW, CE2 is HIGH and CE3 is LOW. When CE is HIGH: CE1 is HIGH, CE2 is LOW, or CE3 is HIGH. 24. Full width write can be initiated by either GW LOW; or by GW HIGH, BWE LOW, and BWX LOW. Document Number: 38-05283 Rev. *K Page 26 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Switching Waveforms (continued) Read/Write Cycle Timing[25, 26, 27] tCYC CLK tCH t ADS ADSP tADH tCL ADSC t AS tAH ADDRESS A1 A2 A3 t WES tWEH A4 A5 A6 BWE, BW X t CES CE tCEH ADV OE tCO t DS tDH t OELZ Data In (D) High-Z tCLZ D ata Out (Q) High-Z Q(A1) Back-to-Back READs tOEHZ Q(A2) Single WRITE D(A3) D(A5) D(A6) Q(A4) Q(A4+1) BURST READ Q(A4+2) Q(A4+3) Back-to-Back WRITEs DON’T CARE UNDEFINED Notes 25. On this diagram, when CE is LOW: CE1 is LOW, CE2 is HIGH and CE3 is LOW. When CE is HIGH: CE1 is HIGH, CE2 is LOW, or CE3 is HIGH. 26. The data bus (Q) remains in high Z following a write cycle, unless a new read access is initiated by ADSP or ADSC. 27. GW is HIGH. Document Number: 38-05283 Rev. *K Page 27 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Switching Waveforms (continued) ZZ Mode Timing[28, 29] CLK t ZZ t ZZREC ZZ t ZZI I SUPPLY I DDZZ t RZZI DESELECT or READ Only A LL INPUTS (except ZZ) Outputs (Q) High-Z DON’T CARE Notes 28. Device must be deselected when entering ZZ mode. See Truth Table on page 11 for all possible signal conditions to deselect the device. 29. DQs are in high Z when exiting ZZ sleep mode. Document Number: 38-05283 Rev. *K Page 28 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Ordering Information Speed (MHz) 167 200 Ordering Code CY7C1480V33-167AXC CY7C1480V33-200AXC Package Diagram Part and Package Type Operating Range Commercial Commercial 51-85050 100-pin TQFP (14 × 20 × 1.4 mm) Pb-free 51-85050 100-pin TQFP (14 × 20 × 1.4 mm) Pb-free Ordering Code Definitions CY 7C 1480 V33 - XXX AX C Temperature Range: C = Commercial Package Type: AX = 100-pin TQFP (Pb-free) Frequency Range: XXX = 167 MHz or 200 MHz VDD = 3.3 V 1480 = SCD, 2 Mb × 36 (72 Mb) Marketing Code: 7C = SRAMs Company ID: CY = Cypress Document Number: 38-05283 Rev. *K Page 29 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Package Diagrams Figure 1. 100-pin TQFP (14 × 20 × 1.4 mm), 51-85050 51-85050 *D Document Number: 38-05283 Rev. *K Page 30 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Package Diagrams (continued) Figure 2. 165-Ball FBGA (15 × 17 × 1.4 mm), 51-85165 51-85165 *B Document Number: 38-05283 Rev. *K Page 31 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Package Diagrams (continued) Figure 3. 209-ball FBGA (14 × 22 × 1.76 mm), 51-85167 51-85167 *A Document Number: 38-05283 Rev. *K Page 32 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Acronyms Acronym BGA CMOS FBGA I/O JTAG LSB MSB OE SRAM TAP TCK TDI TDO TMS TQFP TTL WE ball grid array complementary metal oxide semiconductor fine-pitch ball grid array input/output Joint Test Action Group least significant bit most significant bit output enable static random access memory test access port test clock test data-in test data-out test mode select thin quad flat pack transistor transistor logic write enable Description Document Conventions Units of Measure Symbol °C µA mA mm ms MHz ns  % pF V W degree Celcius micro Amperes milli Amperes milli meter milli seconds Mega Hertz nano seconds Ohms percent pico Farad Volts Watts Unit of Measure Document Number: 38-05283 Rev. *K Page 33 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Document History Page Document Title: CY7C1480V33/CY7C1482V33/CY7C1486V33, 72-Mbit (2 M × 36/4 M × 18/1 M × 72) Pipelined Sync SRAM Document Number: 38-05283 REV. ** *A ECN NO. 114670 118281 Submission Date 08/06/02 01/21/03 Orig. of Change PKS HGK New Data Sheet Changed tCO from 2.4 to 2.6 ns for 250 MHz Updated features on page 1 for package offering Removed 30-MHz offering Updated Ordering Information Changed Advanced Information to Preliminary Changed timing diagrams Changed logic block diagrams Modified Functional Description Modified “Functional Overview” section Added boundary scan order for all packages Included thermal numbers and capacitance values for all packages Included IDD and ISB values Removed 250-MHz speed grade offering and included 225-MHz speed bin Changed package outline for 165FBGA package and 209-ball BGA package Removed 119-BGA package offering Removed 225-MHz offering and included 250-MHz speed bin Changed tCYC from 4.4 ns to 4.0 ns for 250-MHz Speed Bin Changed JA from 16.8 to 24.63 C/W and JC from 3.3 to 2.28 C/W for 100 TQFP Package on Page # 20 Added lead-free information for 100-Pin TQFP, 165 FBGA and 209 BGA Packages Added comment of ‘Lead-free BG packages availability’ below the Ordering Information Unshaded 200 and 167 MHz speed bin in the AC/DC Table and Selection Guide Address expansion pins/balls in the pinouts for all packages are modified as per JEDEC standard Added Address Expansion pins in the Pin Definitions Table Added Truth Table and Note# 7 for CY7C1486V33 on page# 11 Added Industrial Operating Range Modified VOL, VOH test conditions Removed comment of ‘Lead-free BG packages availability’ below the Ordering Information Updated Ordering Information Table Converted Preliminary to Final Changed address of Cypress Semiconductor Corporation on Page# 1 from “3901 North First Street” to “198 Champion Court” Changed the description of IX from Input Load Current to Input Leakage Current on page# 19 Changed the IX current values of MODE on page # 19 from -5 A and 30 A to -30 A and 5 A Changed the IX current values of ZZ on page # 19 from -30 A and 5 A to -5 A and 30 A Changed VIH < VDD to VIH < VDD on page # 19 Replaced Package Name column with Package Diagram in the Ordering Information table Updated the Ordering Information Table Description of Change *B 233368 See ECN NJY *C 299452 See ECN SYT *D 323080 See ECN PCI *E 416193 See ECN NXR Document Number: 38-05283 Rev. *K Page 34 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Document History Page (continued) Document Title: CY7C1480V33/CY7C1482V33/CY7C1486V33, 72-Mbit (2 M × 36/4 M × 18/1 M × 72) Pipelined Sync SRAM Document Number: 38-05283 REV. *F ECN NO. 470723 Submission Date See ECN Orig. of Change VKN Description of Change Added the Maximum Rating for Supply Voltage on VDDQ Relative to GND Changed tTH,tTL from 25 ns to 20 ns and tTDOV from 5 ns to 10 ns in TAP AC Switching Characteristics table Updated the Ordering Information table Corrected the typo in the 209-Ball FBGA pinout. (Corrected the ball name H9 to VSS from VSSQ). Added footnote #2 related to VSSQ Removed inactive parts from Ordering Information table; Updated package diagram. The part CY7C1480V33-250AXC found to be in “EOL Prune” state in Oracle PLM is removed from the ordering information table. Added ordering code definitions. Updated Package Diagrams. Added Acronyms and Units of Measure. Updated in new template. *G *H *I *J 486690 1026720 2898501 3067398 See ECN See ECN 03/24/2010 10/20/10 VKN VKN NJY NJY *K 3257192 05/14/2011 NJY Document Number: 38-05283 Rev. *K Page 35 of 36 [+] Feedback CY7C1480V33 CY7C1482V33 CY7C1486V33 Sales, Solutions, and Legal Information Worldwide Sales and Design Support Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office closest to you, visit us at Cypress Locations. Products Automotive Clocks & Buffers Interface Lighting & Power Control Memory Optical & Image Sensing PSoC Touch Sensing USB Controllers Wireless/RF cypress.com/go/automotive cypress.com/go/clocks cypress.com/go/interface cypress.com/go/powerpsoc cypress.com/go/plc cypress.com/go/memory cypress.com/go/image cypress.com/go/psoc cypress.com/go/touch cypress.com/go/USB cypress.com/go/wireless PSoC Solutions psoc.cypress.com/solutions PSoC 1 | PSoC 3 | PSoC 5 © Cypress Semiconductor Corporation, 2002-2011. The information contained herein is subject to change without notice. Cypress Semiconductor Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in a Cypress product. Nor does it convey or imply any license under patent or other rights. Cypress products are not warranted nor intended to be used for medical, life support, life saving, critical control or safety applications, unless pursuant to an express written agreement with Cypress. Furthermore, Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress products in life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Any Source Code (software and/or firmware) is owned by Cypress Semiconductor Corporation (Cypress) and is protected by and subject to worldwide patent protection (United States and foreign), United States copyright laws and international treaty provisions. Cypress hereby grants to licensee a personal, non-exclusive, non-transferable license to copy, use, modify, create derivative works of, and compile the Cypress Source Code and derivative works for the sole purpose of creating custom software and or firmware in support of licensee product to be used only in conjunction with a Cypress integrated circuit as specified in the applicable agreement. Any reproduction, modification, translation, compilation, or representation of this Source Code except as specified above is prohibited without the express written permission of Cypress. Disclaimer: CYPRESS MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARD TO THIS MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cypress reserves the right to make changes without further notice to the materials described herein. Cypress does not assume any liability arising out of the application or use of any product or circuit described herein. Cypress does not authorize its products for use as critical components in life-support systems where a malfunction or failure may reasonably be expected to result in significant injury to the user. The inclusion of Cypress’ product in a life-support systems application implies that the manufacturer assumes all risk of such use and in doing so indemnifies Cypress against all charges. Use may be limited by and subject to the applicable Cypress software license agreement. Document Number: 38-05283 Rev. *K Revised May 14, 2011 Page 36 of 36 i486 is a trademark and Intel and Pentium are registered trademarks of Intel Corporation. All products and company names mentioned in this document may be the trademarks of their respective holders. [+] Feedback