MX29GL256FDXGI-11G

MX29GL256F MX29GL256F DATASHEET P/N:PM1544 REV. 1.5, OCT. 30, 2013 1 MX29GL256F Contents FEATURES.............................................................................................................................................................. 5 GENERAL FEATURES................................................................................................................................... 5 PERFORMANCE............................................................................................................................................ 5 SOFTWARE FEATURES................................................................................................................................ 5 HARDWARE FEATURES............................................................................................................................... 5 PIN CONFIGURATION............................................................................................................................................ 6 PIN DESCRIPTION.................................................................................................................................................. 7 BLOCK DIAGRAM................................................................................................................................................... 8 BLOCK DIAGRAM DESCRIPTION......................................................................................................................... 9 BLOCK STRUCTURE............................................................................................................................................ 10 Table 1. MX29GL256F SECTOR ARCHITECTURE .................................................................................... 10 BUS OPERATION.................................................................................................................................................. 11 Table 2-1. BUS OPERATION........................................................................................................................ 11 Table 2-2. BUS OPERATION........................................................................................................................ 12 FUNCTIONAL OPERATION DESCRIPTION........................................................................................................ 13 READ OPERATION...................................................................................................................................... 13 PAGE READ................................................................................................................................................. 13 WRITE OPERATION.................................................................................................................................... 13 DEVICE RESET........................................................................................................................................... 13 STANDBY MODE......................................................................................................................................... 13 OUTPUT DISABLE....................................................................................................................................... 14 BYTE/WORD SELECTION........................................................................................................................... 14 HARDWARE WRITE PROTECT.................................................................................................................. 14 ACCELERATED PROGRAMMING OPERATION ........................................................................................ 14 WRITE BUFFER PROGRAMMING OPERATION........................................................................................ 14 SECTOR PROTECT OPERATION............................................................................................................... 15 AUTOMATIC SELECT BUS OPERATIONS................................................................................................. 15 SECTOR LOCK STATUS VERIFICATION................................................................................................... 15 READ SILICON ID MANUFACTURER CODE............................................................................................. 16 READ INDICATOR BIT (Q7) FOR SECURITY SECTOR............................................................................. 16 INHERENT DATA PROTECTION................................................................................................................. 16 COMMAND COMPLETION.......................................................................................................................... 16 LOW VCC WRITE INHIBIT........................................................................................................................... 16 WRITE PULSE "GLITCH" PROTECTION.................................................................................................... 16 LOGICAL INHIBIT......................................................................................................................................... 16 POWER-UP SEQUENCE............................................................................................................................. 17 POWER-UP WRITE INHIBIT........................................................................................................................ 17 POWER SUPPLY DECOUPLING................................................................................................................. 17 P/N:PM1544 REV. 1.5, OCT. 30, 2013 2 MX29GL256F COMMAND OPERATIONS.................................................................................................................................... 18 READING THE MEMORY ARRAY............................................................................................................... 18 AUTOMATIC PROGRAMMING OF THE MEMORY ARRAY....................................................................... 18 ERASING THE MEMORY ARRAY................................................................................................................ 19 SECTOR ERASE.......................................................................................................................................... 19 CHIP ERASE............................................................................................................................................... 20 ERASE SUSPEND/RESUME....................................................................................................................... 21 SECTOR ERASE RESUME......................................................................................................................... 21 PROGRAM SUSPEND/RESUME................................................................................................................ 22 PROGRAM RESUME................................................................................................................................... 22 BUFFER WRITE ABORT.............................................................................................................................. 22 AUTOMATIC SELECT OPERATIONS.......................................................................................................... 23 AUTOMATIC SELECT COMMAND SEQUENCE......................................................................................... 23 READ MANUFACTURER ID OR DEVICE ID............................................................................................... 24 RESET ......................................................................................................................................................... 24 ADVANCED SECTOR PROTECTION/UN-PROTECTION........................................................................... 25 Figure 1. Advance Sector Protection/Unprotection SPB Program Algorithm................................................ 25 Figure 2. Lock Register Program Algorithm.................................................................................................. 26 Figure 3. SPB Program Algorithm................................................................................................................. 28 SECURITY SECTOR FLASH MEMORY REGION....................................................................................... 31 TABLE 3. COMMAND DEFINITIONS........................................................................................................... 32 COMMON FLASH MEMORY INTERFACE (CFI) MODE...................................................................................... 35 QUERY COMMAND AND COMMAND FLASH MEMORY INTERFACE (CFI) MODE................................. 35 Table 4-1. CFI mode: Identification Data Values (Note 1) ................................................................................. 35 Table 4-2. CFI mode: System Interface Data Values.................................................................................... 35 Table 4-3. CFI mode: Device Geometry Data Values................................................................................... 36 Table 4-4. CFI mode: Primary Vendor-Specific Extended Query Data Values............................................. 37 ELECTRICAL CHARACTERISTICS..................................................................................................................... 38 ABSOLUTE MAXIMUM STRESS RATINGS................................................................................................ 38 OPERATING TEMPERATURE AND VOLTAGE........................................................................................... 38 Maximum Negative Overshoot Waveform.................................................................................................... 38 Maximum Positive Overshoot Waveform...................................................................................................... 38 DC CHARACTERISTICS.............................................................................................................................. 39 SWITCHING TEST CIRCUITS..................................................................................................................... 40 Test Condition .............................................................................................................................................. 40 SWITCHING TEST WAVEFORMS.............................................................................................................. 40 AC CHARACTERISTICS.............................................................................................................................. 41 WRITE COMMAND OPERATION.......................................................................................................................... 43 Figure 4. COMMAND WRITE OPERATION................................................................................................. 43 READ/RESET OPERATION.................................................................................................................................. 44 Figure 5. READ TIMING WAVEFORMS....................................................................................................... 44 Figure 6. RESET# TIMING WAVEFORM.................................................................................................... 45 P/N:PM1544 REV. 1.5, OCT. 30, 2013 3 MX29GL256F ERASE/PROGRAM OPERATION......................................................................................................................... 46 Figure 7. AUTOMATIC CHIP ERASE TIMING WAVEFORM........................................................................ 46 Figure 8. AUTOMATIC CHIP ERASE ALGORITHM FLOWCHART............................................................. 47 Figure 9. AUTOMATIC SECTOR ERASE TIMING WAVEFORM................................................................. 48 Figure 10. AUTOMATIC SECTOR ERASE ALGORITHM FLOWCHART..................................................... 49 Figure 11. ERASE SUSPEND/RESUME FLOWCHART.............................................................................. 50 Figure 12. AUTOMATIC PROGRAM TIMING WAVEFORMS....................................................................... 51 Figure 13. ACCELERATED PROGRAM TIMING DIAGRAM........................................................................ 51 Figure 14. CE# CONTROLLED WRITE TIMING WAVEFORM.................................................................... 52 Figure 15. AUTOMATIC PROGRAMMING ALGORITHM FLOWCHART..................................................... 53 Figure 16. SILICON ID READ TIMING WAVEFORM................................................................................... 54 WRITE OPERATION STATUS............................................................................................................................... 55 Figure 17. DATA# POLLING TIMING WAVEFORMS (DURING AUTOMATIC ALGORITHMS)................... 55 Figure 18. STATUS POLLING FOR WORD PROGRAM/ERASE................................................................. 56 Figure 19. STATUS POLLING FOR WRITE BUFFER PROGRAM.............................................................. 57 Figure 20. TOGGLE BIT TIMING WAVEFORMS (DURING AUTOMATIC ALGORITHMS)......................... 58 Figure 21. TOGGLE BIT ALGORITHM......................................................................................................... 59 Figure 22. BYTE# TIMING WAVEFORM FOR READ OPERATIONS (BYTE# switching from byte mode to word mode).................................................................................................................................................. 60 Figure 23. PAGE READ TIMING WAVEFORM............................................................................................. 61 Figure 24. DEEP POWER DOWN MODE WAVEFORM ............................................................................. 62 Figure 25. WRITE BUFFER PROGRAM FLOWCHART.............................................................................. 63 RECOMMENDED OPERATING CONDITIONS..................................................................................................... 64 At Device Power-Up..................................................................................................................................... 64 ERASE AND PROGRAMMING PERFORMANCE................................................................................................ 65 DATA RETENTION................................................................................................................................................ 65 LATCH-UP CHARACTERISTICS.......................................................................................................................... 65 PIN CAPACITANCE............................................................................................................................................... 65 ORDERING INFORMATION.................................................................................................................................. 66 PART NAME DESCRIPTION................................................................................................................................. 67 PACKAGE INFORMATION.................................................................................................................................... 68 REVISION HISTORY ............................................................................................................................................. 71 P/N:PM1544 REV. 1.5, OCT. 30, 2013 4 MX29GL256F SINGLE VOLTAGE 3V ONLY FLASH MEMORY FEATURES GENERAL FEATURES • Power Supply Operation - 2.7 to 3.6 volt for read, erase, and program operations - MX29GL256F H/L: VI/O=VCC=2.7V~3.6V, VI/O voltage must tight with VCC - MX29GL256F U/D: VI/O=1.65V~3.6V for Input/Output • Byte/Word mode switchable - 33,554,432 x 8 / 16,777,216 x 16 • 64KW/128KB uniform sector architecture - 256 equal sectors • 16-byte/8-word page read buffer • 64-byte/32-word write buffer • Extra 128-word sector for security - Features factory locked and identifiable, and customer lockable • Advanced sector protection function (Solid and Password Protect) • Latch-up protected to 100mA from -1V to 1.5xVcc • Low Vcc write inhibit : Vcc ≤ VLKO • Compatible with JEDEC standard - Pinout and software compatible to single power supply Flash • Deep power down mode PERFORMANCE • High Performance - Fast access time: - MX29GL256F H/L: 100ns (VCC=2.7~3.6V), 90ns (VCC=3.0~3.6V) - MX29GL256F U/D: 110ns (VCC=2.7~3.6V, V I/O=1.65 to Vcc) - Page access time: - MX29GL256F H/L: 25ns - MX29GL256F U/D: 30ns - Fast program time: 10us/word - Fast erase time: 0.5s/sector • Low Power Consumption - Low active read current: 10mA (typical) at 5MHz - Low standby current: 20uA (typical) • Minimum 100,000 erase/program cycle • 20 years data retention SOFTWARE FEATURES • Program/Erase Suspend & Program/Erase Resume - Suspends sector erase operation to read data from or program data to another sector which is not being erased - Suspends sector program operation to read data from another sector which is not being program • Status Reply - Data# Polling & Toggle bits provide detection of program and erase operation completion • Support Common Flash Interface (CFI) HARDWARE FEATURES • Ready/Busy# (RY/BY#) Output - Provides a hardware method of detecting program and erase operation completion • Hardware Reset (RESET#) Input - Provides a hardware method to reset the internal state machine to read mode • WP#/ACC input pin - Hardware write protect pin/Provides accelerated program capability PACKAGE • 56-Pin TSOP • 56-Ball FBGA (7mm x 9mm) • 64-Ball LFBGA (11mm x 13mm) • All devices are RoHS Compliant and Halogen-free P/N:PM1544 REV. 1.5, OCT. 30, 2013 5 MX29GL256F PIN CONFIGURATION 56 TSOP 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 A23 A22 A15 A14 A13 A12 A11 A10 A9 A8 A19 A20 WE# RESET# A21 WP#/ACC RY/BY# A18 A17 A7 A6 A5 A4 A3 A2 A1 NC NC 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 NC NC A16 BYTE# GND Q15/A-1 Q7 Q14 Q6 Q13 Q5 Q12 Q4 VCC Q11 Q3 Q10 Q2 Q9 Q1 Q8 Q0 OE# GND CE# A0 NC VI/O 64 LFBGA 8 NC A22 A23 VI/O GND NC NC NC 7 A13 A12 A14 A15 A16 BYTE# Q15/ A-1 GND 6 A9 A8 A10 A11 Q7 Q14 Q13 Q6 5 WE# RESET# A21 A19 Q5 Q12 VCC Q4 4 RY/ BY# WP#/ ACC A18 A20 Q2 Q10 Q11 Q3 3 A7 A17 A6 A5 Q0 Q8 Q9 Q1 2 A3 A4 A2 A1 A0 CE# OE# GND 1 NC NC NC NC NC VI/O NC NC C D E F G H A B P/N:PM1544 REV. 1.5, OCT. 30, 2013 6 MX29GL256F 56 FBGA (7x9x1.2mm) 1 2 3 4 5 A7 NC WP#/ACC A3 A6 NC A2 A5 A18 A1 A4 A0 6 7 8 A WE# A8 A11 RESET# A23 A19 A12 A15 RY/BY# A20 A9 A13 A21 A17 A10 A14 A22 GND Q1 Q6 NC A16 CE# OE# Q9 Q3 Q4 Q13 Q15 NC NC Q0 Q10 VCC VI/O *1 Q12 Q7 GND Q8 Q2 Q11 NC Q5 Q14 B C D E F G H Note: *1. G5 pin is NC on MX29GL256F H/L. *2. Only support word mode for 56-FBGA. PIN DESCRIPTION LOGIC SYMBOL SYMBOL PIN NAME A0~A23 Q0~Q14 Q15/A-1 CE# WE# OE# RESET# 24 Address Input Data Inputs/Outputs Q15(Word Mode)/LSB addr(Byte Mode) Chip Enable Input Write Enable Input Output Enable Input Hardware Reset Pin, Active Low A0-A23 Q0-Q15 (A-1) 16 or 8 CE# OE# Hardware Write Protect/Programming WP#/ACC* Acceleration input RY/BY# Ready/Busy Output BYTE# Selects 8 bits or 16 bits mode VCC +3.0V single power supply GND Device Ground NC Pin Not Connected Internally VI/O Power Supply for Input/Output WE# RESET# WP#/ACC RY/BY# BYTE# VI/O Notes: 1. WP#/ACC has internal pull up. 2. For MX29GL256F H/L VI/O voltage must tight with VCC (VI/O = VCC =2.7V~3.6V). P/N:PM1544 REV. 1.5, OCT. 30, 2013 7 MX29GL256F BLOCK DIAGRAM CE# OE# WE# RESET# BYTE# WP#/ACC CONTROL INPUT LOGIC PROGRAM/ERASE STATE HIGH VOLTAGE MACHINE (WSM) LATCH BUFFER FLASH REGISTER ARRAY ARRAY Y-DECODER AND STATE X-DECODER ADDRESS A0-AM WRITE Y-PASS GATE SOURCE HV COMMAND DATA DECODER SENSE AMPLIFIER PGM DATA HV COMMAND DATA LATCH PROGRAM DATA LATCH Q0-Q15/A-1 I/O BUFFER AM: MSB address P/N:PM1544 REV. 1.5, OCT. 30, 2013 8 MX29GL256F BLOCK DIAGRAM DESCRIPTION The block diagram on Page 8 illustrates a simplified architecture of this device. Each block in the block diagram represents one or more circuit modules in the real chip used to access, erase, program, and read the memory array. The "CONTROL INPUT LOGIC" block receives input pins CE#, OE#, WE#, RESET#, BYTE#, and WP#/ACC. It creates internal timing control signals according to the input pins and outputs to the "ADDRESS LATCH AND BUFFER" to latch the external address pins A0-AM(A23). The internal addresses are output from this block to the main array and decoders composed of "X-DECODER", "Y-DECODER", "Y-PASS GATE", AND "FLASH ARRAY". The X-DECODER decodes the word-lines of the flash array, while the Y-DECODER decodes the bit-lines of the flash array. The bit lines are electrically connected to the "SENSE AMPLIFIER" and "PGM DATA HV" selectively through the Y-PASS GATES. SENSE AMPLIFIERS are used to read out the contents of the flash memory, while the "PGM DATA HV" block is used to selectively deliver high power to bit-lines during programming. The "I/O BUFFER" controls the input and output on the Q0-Q15/A-1 pads. During read operation, the I/O BUFFER receives data from SENSE AMPLIFIERS and drives the output pads accordingly. In the last cycle of program command, the I/O BUFFER transmits the data on Q0-Q15/A-1 to "PROGRAM DATA LATCH", which controls the high power drivers in "PGM DATA HV" to selectively program the bits in a word or byte according to the user input pattern. The "PROGRAM/ERASE HIGH VOLTAGE" block comprises the circuits to generate and deliver the necessary high voltage to the X-DECODER, FLASH ARRAY, and "PGM DATA HV" blocks. The logic control module comprises of the "WRITE STATE MACHINE, WSM", "STATE REGISTER", "COMMAND DATA DECODER", and "COMMAND DATA LATCH". When the user issues a command by toggling WE#, the command on Q0-Q15/A-1 is latched in the COMMAND DATA LATCH and is decoded by the COMMAND DATA DECODER. The STATE REGISTER receives the command and records the current state of the device. The WSM implements the internal algorithms for program or erase according to the current command state by controlling each block in the block diagram. ARRAY ARCHITECTURE The main flash memory array can be organized as Byte mode (x8) or Word mode (x16). The details of the address ranges and the corresponding sector addresses are shown in Table 1. P/N:PM1544 REV. 1.5, OCT. 30, 2013 9 MX29GL256F BLOCK STRUCTURE Table 1. MX29GL256F SECTOR ARCHITECTURE Kbytes 128 128 128 128 : : : 128 128 128 128 Sector Size Kwords 64 64 64 64 : : : 64 64 64 64 Sector SA0 SA1 SA2 SA3 : : : SA252 SA253 SA254 SA255 P/N:PM1544 Sector Address A23-A16 00000000 00000001 00000010 00000011 : : : 11111100 11111101 11111110 11111111 (x16) Address Range 000000h-00FFFFh 010000h-01FFFFh 020000h-02FFFFh 030000h-03FFFFh : : : FC0000h-FCFFFFh FD0000h-FDFFFFh FE0000h-FEFFFFh FF0000h-FFFFFFh REV. 1.5, OCT. 30, 2013 10 MX29GL256F BUS OPERATION Table 2-1. BUS OPERATION OE# Address (Note4) Data I/O Q7~Q0 X X X HighZ Byte# Vil Vih Data (I/O) Q15~Q8 HighZ HighZ X X X HighZ HighZ HighZ H H H X HighZ HighZ HighZ L/H L H L AIN DOUT DOUT L/H H L L H AIN DIN DIN Note1,2 H L L H AIN DIN DIN Vhv RESET# CE# WE# L Vcc ± 0.3V H X Vcc± 0.3V L Read Mode H Write Accelerate Program Mode Select Device Reset Standby Mode Output Disable Q8-Q14= HighZ, Q15=A-1 WP#/ ACC L/H Notes: 1. The first or last sector was protected if WP#/ACC=Vil. 2. When WP#/ACC = Vih, the protection conditions of the outmost sector depends on previous protection conditions. Refer to the advanced protect feature. 3. Q0~Q15 are input (DIN) or output (DOUT) pins according to the requests of command sequence, sector protection, or data polling algorithm. 4. In Word Mode (Byte#=Vih), the addresses are AM to A0, AM: MSB of address. In Byte Mode (Byte#=Vil), the addresses are AM to A-1 (Q15), AM: MSB of address. P/N:PM1544 REV. 1.5, OCT. 30, 2013 11 MX29GL256F Table 2-2. BUS OPERATION Item AM A11 to to CE# WE# OE# A12 A10 Control Input A9 A8 to A7 A6 A5 to A4 A3 to A2 A1 A0 Q7 ~ Q0 Q15 ~ Q8 Sector Lock Status Verification L H L SA X Vhv X L X L H L 01h or 00h (Note 1) X Read Silicon ID Manufacturer Code L H L X X Vhv X L X L L L C2H X Read Silicon ID -- MX29GL256F Cycle 1 L H L X X Vhv X L X L L H 7EH Cycle 2 L H L X X Vhv X L X H H L 22H Cycle 3 L H L X X Vhv X L X H H H 01H 22H(Word), XXH(Byte) 22H(Word), XXH(Byte) 22H(Word), XXH(Byte) Notes: 1. Sector unprotected code:00h. Sector protected code:01h. 2. Factory locked code: WP# protects high address sector: 99h. WP# protects low address sector: 89h Factory unlocked code: WP# protects high address sector: 19h. WP# protects low address sector: 09h 3. AM: MSB of address. P/N:PM1544 REV. 1.5, OCT. 30, 2013 12 MX29GL256F FUNCTIONAL OPERATION DESCRIPTION READ OPERATION To perform a read operation, the system addresses the desired memory array or status register location by providing its address on the address pins and simultaneously enabling the chip by driving CE# & OE# LOW, and WE# HIGH. After the Tce and Toe timing requirements have been met, the system can read the contents of the addressed location by reading the Data (I/O) pins. If either the CE# or OE# is held HIGH, the outputs will remain tri-stated and no data will appear on the output pins. PAGE READ This device is able to conduct MXIC MaskROM compatible high performance page read. Page size is 16 bytes or 8 words. The higher address Amax ~ A3 select the certain page, while A2~A0 for word mode, A2~A-1 for byte mode select the particular word or byte in a page. The page access time is Taa or Tce, following by Tpa for the rest of the page read time. When CE# toggles, access time is Taa or Tce. Page mode can be turned on by keeping "page-read address" constant and changing the "intra-read page" addresses. WRITE OPERATION To perform a write operation, the system provides the desired address on the address pins, enables the chip by asserting CE# LOW, and disables the Data (I/O) pins by holding OE# HIGH. The system then places data to be written on the Data (I/O) pins and pulses WE# LOW. The device captures the address information on the falling edge of WE# and the data on the rising edge of WE#. To see an example, please refer to the timing diagram in Figure 4. The system is not allowed to write invalid commands (commands not defined in this datasheet) to the device. Writing an invalid command may put the device in an undefined state. DEVICE RESET Driving the RESET# pin LOW for a period of Trp or more will return the device to Read mode. If the device is in the middle of a program or erase operation, the reset operation will take at most a period of Tready1 before the device returns to Read mode. Until the device does returns to Read mode, the RY/BY# pin will remain Low (Busy Status). When the RESET# pin is held at GND±0.3V, the device only consumes standby (Isbr) current. However, the device draws larger current if the RESET# pin is held at a voltage greater than GND+0.3V and less than or equal to Vil. It is recommended to tie the system reset signal to the RESET# pin of the flash memory. This allows the device to be reset with the system and puts it in a state where the system can immediately begin reading boot code from it. STANDBY MODE The device enters Standby mode whenever the RESET# and CE# pins are both held High except in the embedded mode. While in this mode, WE# and OE# will be ignored, all Data Output pins will be in a high impedance state, and the device will draw minimal (Isb) current. P/N:PM1544 REV. 1.5, OCT. 30, 2013 13 MX29GL256F FUNCTIONAL OPERATION DESCRIPTION (cont'd) OUTPUT DISABLE While in active mode (RESET# HIGH and CE# LOW), the OE# pin controls the state of the output pins. If OE# is held HIGH, all Data (I/O) pins will remain tri-stated. If held LOW, the Byte or Word Data (I/O) pins will drive data. BYTE/WORD SELECTION The BYTE# input pin is used to select the organization of the array data and how the data is input/output on the Data (I/O) pins. If the BYTE# pin is held HIGH, Word mode will be selected and all 16 data lines (Q0 to Q15) will be active. If BYTE# is forced LOW, Byte mode will be active and only data lines Q0 to Q7 will be active. Data lines Q8 to Q14 will remain in a high impedance state and Q15 becomes the A-1 address input pin. HARDWARE WRITE PROTECT By driving the WP#/ACC pin LOW. The highest or lowest was protected from all erase/program operations. If WP#/ACC is held HIGH (Vih to VCC), these sectors revert to their previously protected/unprotected status. ACCELERATED PROGRAMMING OPERATION By applying high voltage (Vhv) to the WP#/ACC pin, the device will enter the Accelerated Programming mode. This mode permits the system to skip the normal command unlock sequences and program byte/word locations directly. During accelerated programming, the current drawn from the WP#/ACC pin is no more than ICP1. WRITE BUFFER PROGRAMMING OPERATION Programs 64bytes/32words in a programming operation. To trigger the Write Buffer Programming, start by the first two unlock cycles, then third cycle writes the Write Buffer Load command at the destined programming Sector Address. The forth cycle writes the "word locations subtract one" number. Following above operations, system starts to write the mingling of address and data. After the programming of the first address or data, the "write-buffer-page" is selected. The following data should be within the above mentioned page. The "write-buffer-page" is selected by choosing address Amax-A5. "Write-Buffer-Page" address has to be the same for all address/ data write into the write buffer. If not, operation will ABORT. To program the content of the write buffer page this command must be followed by a write to buffer Program confirm command. The operation of write-buffer can be suspended or resumed by the standard commands, once the write buffer programming operation is finished, it’ll return to normal READ mode. P/N:PM1544 REV. 1.5, OCT. 30, 2013 14 MX29GL256F FUNCTIONAL OPERATION DESCRIPTION (cont'd) WRITE BUFFER PROGRAMMING OPERATION (cont'd) ABORT will be executed for the Write Buffer Programming Sequence if following condition occurs: • The value loaded is bigger than the page buffer size during "Number of Locations to Program" • Address written in a sector is not the same as the one assigned during the Write-Buffer-Load command. • Address/ Data pair written to a different write-buffer-page than the one assigned by the "Starting Address" during the "write buffer data loading" operation. • Writing not "Confirm Command" after the assigned number of "data load" cycles. At Write Buffer Abort mode, the status register will be Q1=1, Q7=DATA# (last address written), Q6=toggle. A Write-to-Buffer-Abort Reset command sequence has to be written to reset the device for the next operation. Write buffer programming can be conducted in any sequence. However the CFI functions, autoselect, Secured Silicon sector are not functional when program operation is in progress. Multiple write buffer programming operations on the same write buffer address range without intervening erases is available. Any bit in a write buffer address range can’t be programmed from 0 back to 1. SECTOR PROTECT OPERATION The device provides user programmable protection operations for selected sectors. Please refer to Table 1 which show all Sector assignments. During the protection operation, the sector address of any sector may be used to specify the Sector being protected. AUTOMATIC SELECT BUS OPERATIONS The following five bus operations require A9 to be raised to Vhv. Please see AUTOMATIC SELECT COMMAND SEQUENCE in the COMMAND OPERATIONS section for details of equivalent command operations that do not require the use of Vhv. SECTOR LOCK STATUS VERIFICATION To determine the protected state of any sector using bus operations, the system performs a READ OPERATION with A9 raised to Vhv, the sector address applied to address pins A23 to A12, address pins A6, A3, A2 & A0 held LOW, and address pin A1 held HIGH. If data bit Q0 is LOW, the sector is not protected, and if Q0 is HIGH, the sector is protected. P/N:PM1544 REV. 1.5, OCT. 30, 2013 15 MX29GL256F FUNCTIONAL OPERATION DESCRIPTION (cont'd) READ SILICON ID MANUFACTURER CODE To determine the Silicon ID Manufacturer Code, the system performs a READ OPERATION with A9 raised to Vhv and address pins A6, A3, A2, A1, & A0 held LOW. The Macronix ID code of C2h should be present on data bits Q7 to Q0. READ INDICATOR BIT (Q7) FOR SECURITY SECTOR To determine if the Security Sector has been locked at the factory, the system performs a READ OPERATION with A9 raised to Vhv, address pin A6, A3 & A2 held LOW, and address pins A1 & A0 held HIGH. If the Security Sector has been locked at the factory, the code 99h(H)/89h(L) will be present on data bits Q7 to Q0. Otherwise, the factory unlocked code of 19h(H)/09h(L) will be present. INHERENT DATA PROTECTION To avoid accidental erasure or programming of the device, the device is automatically reset to Read mode during power up. Additionally, the following design features protect the device from unintended data corruption. COMMAND COMPLETION Only after the successful completion of the specified command sets will the device begin its erase or program operation. The failure in observing valid command sets will result in the memory returning to read mode. LOW VCC WRITE INHIBIT The device refuses to accept any write command when Vcc is less than VLKO. This prevents data from spuriously being altered during power-up, power-down, or temporary power interruptions. The device automatically resets itself when Vcc is lower than VLKO and write commands are ignored until Vcc is greater than VLKO. The system must provide proper signals on control pins after Vcc rises above VLKO to avoid unintentional program or erase operations. WRITE PULSE "GLITCH" PROTECTION CE#, WE#, OE# pulses shorter than 5ns are treated as glitches and will not be regarded as an effective write cycle. LOGICAL INHIBIT A valid write cycle requires both CE# and WE# at Vil with OE# at Vih. Write cycle is ignored when either CE# at Vih, WE# at Vih, or OE# at Vil. P/N:PM1544 REV. 1.5, OCT. 30, 2013 16 MX29GL256F FUNCTIONAL OPERATION DESCRIPTION (cont'd) POWER-UP SEQUENCE Upon power up, the device is placed in Read mode. Furthermore, program or erase operation will begin only after successful completion of specified command sequences. POWER-UP WRITE INHIBIT When WE#, CE# is held at Vil and OE# is held at Vih during power up, the device ignores the first command on the rising edge of WE#. POWER SUPPLY DECOUPLING A 0.1uF capacitor should be connected between the Vcc and GND to reduce the noise effect. P/N:PM1544 REV. 1.5, OCT. 30, 2013 17 MX29GL256F COMMAND OPERATIONS READING THE MEMORY ARRAY Read mode is the default state after power up or after a reset operation. To perform a read operation, please refer to READ OPERATION in the BUS OPERATIONS section above. If the device receives an Erase Suspend command while in the Sector Erase state, the erase operation will pause (after a time delay not exceeding 20us) and the device will enter Erase-Suspended Read mode. While in the Erase-Suspended Read mode, data can be programmed or read from any sector not being erased. Reading from addresses within sector (s) being erased will only return the contents of the status register, which is in fact how the current status of the device can be determined. If a program command is issued to any inactive (not currently being erased) sector during Erase-Suspended Read mode, the device will perform the program operation and automatically return to Erase-Suspended Read mode after the program operation completes successfully. While in Erase-Suspended Read mode, an Erase Resume command must be issued by the system to reactivate the erase operation. The erase operation will resume from where is was suspended and will continue until it completes successfully or another Erase Suspend command is received. After the memory device completes an embedded operation (automatic Chip Erase, Sector Erase, or Program) successfully, it will automatically return to Read mode and data can be read from any address in the array. If the embedded operation fails to complete, as indicated by status register bit Q5 (exceeds time limit flag) going HIGH during the operations, the system must perform a reset operation to return the device to Read mode. There are several states that require a reset operation to return to Read mode: 1. A program or erase failure--indicated by status register bit Q5 going HIGH during the operation. Failures during either of these states will prevent the device from automatically returning to Read mode. 2. The device is in Auto Select mode or CFI mode. These two states remain active until they are terminated by a reset operation. In the two situations above, if a reset operation (either hardware reset or software reset command) is not performed, the device will not return to Read mode and the system will not be able to read array data. AUTOMATIC PROGRAMMING OF THE MEMORY ARRAY The device provides the user the ability to program the memory array in Byte mode or Word mode. As long as the users enters the correct cycle defined in the Table 3 (including 2 unlock cycles and the A0H program command), any byte or word data provided on the data lines by the system will automatically be programmed into the array at the specified location. After the program command sequence has been executed, the internal write state machine (WSM) automatically executes the algorithms and timings necessary for programming and verification, which includes generating suitable program pulses, checking cell threshold voltage margins, and repeating the program pulse if any cells do not pass verification or have low margins. The internal controller protects cells that do pass verification and margin tests from being over-programmed by inhibiting further program pulses to these passing cells as weaker cells continue to be programmed. With the internal WSM automatically controlling the programming process, the user only needs to enter the program command and data once. P/N:PM1544 REV. 1.5, OCT. 30, 2013 18 MX29GL256F COMMAND OPERATIONS (cont'd) AUTOMATIC PROGRAMMING OF THE MEMORY ARRAY (cont'd) Programming will only change the bit status from "1" to "0". It is not possible to change the bit status from "0" to "1" by programming. This can only be done by an erase operation. Furthermore, the internal write verification only checks and detects errors in cases where a "1" is not successfully programmed to "0". Any commands written to the device during programming will be ignored except hardware reset or program suspend. Hardware reset will terminate the program operation after a period of time no more than 10us. When the embedded program algorithm is complete or the program operation is terminated by a hardware reset, the device will return to Read mode. Program suspend ready, the device will enter program suspend read mode. After the embedded program operation has begun, the user can check for completion by reading the following bits in the status register: Status In progress Exceed time limit Q7*1 Q7# Q7# Q6*1 Toggling Toggling Q5 0 1 Q1 0 N/A RY/BY# (Note) 0 0 Note: RY/BY# is an open drain output pin and should be connected to VCC through a high value pull-up resistor. ERASING THE MEMORY ARRAY There are two types of erase operations performed on the memory array -- Sector Erase and Chip Erase. In the Sector Erase operation, one or more selected sectors may be erased simultaneously. In the Chip Erase operation, the complete memory array is erased except for any protected sectors. More details of the protected sectors are explained in Section Advanced Sector Protection/Un-protection. SECTOR ERASE The sector erase operation is used to clear data within a sector by returning all of its memory locations to the "1" state. It requires six command cycles to initiate the erase operation. The first two cycles are "unlock cycles", the third is a configuration cycle, the fourth and fifth are also "unlock cycles", and the sixth cycle is the Sector Erase command. After the sector erase command sequence has been issued, an internal 50us time-out counter is started. Until this counter reaches zero, additional sector addresses and Sector Erase commands may be issued thus allowing multiple sectors to be selected and erased simultaneously. After the 50us time-out counter has expired, no new commands will be accepted and the embedded sector erase operation will begin. Note that the 50us timer-out counter is restarted after every erase command sequence. If the user enters any command other than Sector Erase or Erase Suspend during the time-out period, the erase operation will abort and the device will return to Read mode. After the embedded sector erase operation begins, all commands except Erase Suspend will be ignored. The only way to interrupt the operation is with an Erase Suspend command or with a hardware reset. The hardware reset will completely abort the operation and return the device to Read mode. P/N:PM1544 REV. 1.5, OCT. 30, 2013 19 MX29GL256F COMMAND OPERATIONS (cont'd) SECTOR ERASE (cont'd) The system can determine the status of the embedded sector erase operation by the following methods: Status Time-out period In progress Exceeded time limit Q7 0 0 0 Q6 Toggling Toggling Toggling Q3*1 0 1 1 Q5 0 0 1 Q2 Toggling Toggling Toggling RY/BY#*2 0 0 0 Notes: 1. The Q3 status bit is the 50us time-out indicator. When Q3=0, the 50us time-out counter has not yet reached zero and a new Sector Erase command may be issued to specify the address of another sector to be erased. When Q3=1, the 50us time-out counter has expired and the Sector Erase operation has already begun. Erase Suspend is the only valid command that may be issued once the embedded erase operation is underway. 2. RY/BY# is open drain output pin and should be connected to VCC through a high value pull-up resistor. 3. When an attempt is made to erase only protected sector (s), the erase operation will abort thus preventing any data changes in the protected sector (s). Q7 will output "0" and Q6 will toggle briefly (100us or less) before aborting and returning the device to Read mode. If unprotected sectors are also specified, however, they will be erased normally and the protected sector (s) will remain unchanged. 4. Q2 is a localized indicator showing a specified sector is undergoing erase operation or not. Q2 toggles when user reads at addresses where the sectors are actively being erased (in erase mode) or to be erased (in erase suspend mode). CHIP ERASE The Chip Erase operation is used erase all the data within the memory array. All memory cells containing a "0" will be returned to the erased state of "1". This operation requires 6 write cycles to initiate the action. The first two cycles are "unlock" cycles, the third is a configuration cycle, the fourth and fifth are also "unlock" cycles, and the sixth cycle initiates the chip erase operation. During the chip erase operation, no other software commands will be accepted, but if a hardware reset is received or the working voltage is too low, that chip erase will be terminated. After Chip Erase, the chip will automatically return to Read mode. The system can determine the status of the embedded chip erase operation by the following methods: Status In progress Exceed time limit Q7 0 0 Q6 Toggling Toggling Q5 0 1 Q2 Toggling Toggling RY/BY#*1 0 0 *1: RY/BY# is open drain output pin and should be connected to VCC through a high value pull-up resistor. P/N:PM1544 REV. 1.5, OCT. 30, 2013 20 MX29GL256F COMMAND OPERATIONS (cont'd) ERASE SUSPEND/RESUME After beginning a sector erase operation, Erase Suspend is the only valid command that may be issued. If system issues an Erase Suspend command during the 50us time-out period following a Sector Erase command, the time-out period will terminate immediately and the device will enter Erase-Suspended Read mode. If the system issues an Erase Suspend command after the sector erase operation has already begun, the device will not enter Erase-Suspended Read mode until 20us time has elapsed. The system can determine if the device has entered the Erase-Suspended Read mode through Q6, Q7, and RY/BY#. After the device has entered Erase-Suspended Read mode, the system can read or program any sector (s) except those being erased by the suspended erase operation. Reading any sector being erased or programmed will return the contents of the status register. Whenever a suspend command is issued, user must issue a resume command and check Q6 toggle bit status, before issue another erase command. The system can use the status register bits shown in the following table to determine the current state of the device: Status Erase suspend read in erase suspended sector Erase suspend read in non-erase suspended sector Q7 Q6 Q5 Q3 Q2 Q1 RY/BY# 1 No toggle 0 N/A toggle N/A 1 Data Data 1 N/A N/A 0 Data Erase suspend program in non-erase suspended sector Q7# Data Toggle Data Data 0 N/A When the device has suspended erasing, user can execute the command sets except sector erase and chip erase, such as read silicon ID, sector protect verify, program, CFI query and erase resume. SECTOR ERASE RESUME The sector Erase Resume command is valid only when the device is in Erase-Suspended Read mode. After erase resumes, the user can issue another Ease Suspend command, but there should be a 400us interval between Ease Resume and the next Erase Suspend command. P/N:PM1544 REV. 1.5, OCT. 30, 2013 21 MX29GL256F COMMAND OPERATIONS (cont'd) PROGRAM SUSPEND/RESUME After beginning a program operation, Program Suspend is the only valid command that may be issued. The system can determine if the device has entered the Program-Suspended Read mode through Q6 and RY/BY#. After the device has entered Program-Suspended mode, the system can read any sector (s) except those being programmed by the suspended program operation. Reading the sector being program suspended is invalid. Whenever a suspend command is issued, user must issue a resume command and check Q6 toggle bit status, before issue another program command. The system can use the status register bits shown in the following table to determine the current state of the device: Status Q7 Q6 Q5 Program suspend read in program suspended sector Q3 Q2 Q1 Invalid Program suspend read in non-program suspended Data sector Data Data RY/BY# 1 Data Data Data 1 When the device has Program/Erase suspended, user can execute read array, auto-select, read CFI, read security silicon. PROGRAM RESUME The Program Resume command is valid only when the device is in Program-Suspended mode. After program resumes, the user can issue another Program Suspend command, but there should be a 5us interval between Program Resume and the next Program Suspend command. BUFFER WRITE ABORT Q1 is the indicator of Buffer Write Abort. When Q1=1, the device will abort from buffer write and go back to read status register shown as following table: Status Q7 Q6 Q5 Q3 Q2 Q1 RY/BY# Buffer Write Busy Q7# Toggle 0 N/A N/A 0 0 Buffer Write Abort Q7# Toggle 0 N/A N/A 1 0 Buffer Write Exceeded Time Limit Q7# Toggle 1 N/A N/A 0 0 P/N:PM1544 REV. 1.5, OCT. 30, 2013 22 MX29GL256F COMMAND OPERATIONS (cont'd) AUTOMATIC SELECT OPERATIONS When the device is in Read mode, Program Suspended mode, Erase-Suspended Read mode, or CFI mode, the user can issue the Automatic Select command shown in Table 3 (two unlock cycles followed by the Automatic Select command 90h) to enter Automatic Select mode. After entering Automatic Select mode, the user can query the Manufacturer ID, Device ID, Security Sector locked status, or Sector protected status multiple times without issuing a new Automatic Select command. While In Automatic Select mode, issuing a Reset command (F0h) will return the device to Read mode (or EaseSuspended Read mode if Erase-Suspend was active) or Program Suspended Read mode if Program Suspend was active. Another way to enter Automatic Select mode is to use one of the bus operations shown in Table 2-2. BUS OPERATION. After the high voltage (Vhv) is removed from the A9 pin, the device will automatically return to Read mode or Erase-Suspended Read mode. AUTOMATIC SELECT COMMAND SEQUENCE Automatic Select mode is used to access the manufacturer ID, device ID and to verify whether or not secured silicon is locked and whether or not a sector is protected. The automatic select mode has four command cycles. The first two are unlock cycles, and followed by a specific command. The fourth cycle is a normal read cycle, and user can read at any address any number of times without entering another command sequence. The Reset command is necessary to exit the Automatic Select mode and back to read array. The following table shows the identification code with corresponding address. Manufacturer ID Device ID MX29GL256F Secured Silicon Sector Protect Verify Word Byte Word Address X00 X00 X01/0E/0F Byte X02/1C/1E Word X03 Byte X06 Word Byte (Sector address) X 02 (Sector address) X 04 Data (Hex) Representation C2 C2 227E/2222/2201 7E/22/01 99/19 (H) 89/09 (L) 99/19 (H) 89/09 (L) 00/01 00/01 Factory locked/unlocked Factory locked/unlocked Unprotected/protected Unprotected/protected After entering automatic select mode, no other commands are allowed except the reset command. P/N:PM1544 REV. 1.5, OCT. 30, 2013 23 MX29GL256F COMMAND OPERATIONS (cont'd) READ MANUFACTURER ID OR DEVICE ID The Manufacturer ID (identification) is a unique hexadecimal number assigned to each manufacturer by the JEDEC committee. Each company has its own manufacturer ID, which is different from the ID of all other companies. The number assigned to Macronix is C2h. After entering Automatic Select mode, performing a read operation with A1 & A0 held LOW will cause the device to output the Manufacturer ID on the Data I/O (Q7 to Q0) pins. RESET In the following situations, executing reset command will reset device back to Read mode: • • • • Among erase command sequence (before the full command set is completed) Sector erase time-out period Erase fail (while Q5 is high) Among program command sequence (before the full command set is completed, erase-suspended program included) • Program fail (while Q5 is high, and erase-suspended program fail is included) • Auto-select mode • CFI mode While device is at the status of program fail or erase fail (Q5 is high), user must issue reset command to reset device back to read array mode. While the device is in Auto-Select mode or CFI mode, user must issue reset command to reset device back to read array mode. When the device is in the progress of programming (not program fail) or erasing (not erase fail), device will ignore reset command. P/N:PM1544 REV. 1.5, OCT. 30, 2013 24 MX29GL256F ADVANCED SECTOR PROTECTION/UN-PROTECTION There are two ways to implement software Advanced Sector Protection on this device: Password method or Solid methods. Through these two protection methods, user can disable or enable the programming or erasing operation to any individual sector or the whole chip. The figure below helps to describe an overview of these methods. The device is default to the Solid mode. All sectors are default as unprotected when shipped from factory. The detailed algorithm of advance sector protection is shown as follows: Figure 1. Advance Sector Protection/Unprotection SPB Program Algorithm Start To choose protection mode set lock register bit (Q1/Q2) Q1=0 Solid Protection Mode Q2=0 Password Protection Mode Set 64 bit Password Set SPB Lock Bit SPBLK = 0 SPB Lock bit locked All SPBs can not changeable SPBLK = 1 SPB Lock bit Unlocked All SPBs are changeable Dynamic write Protect bit (DPB) DPB=0 sector protect Sector Array DPB=1 sector unprotect DPB 0 SA 0 Solid write Protect bit (SPB) Temporary Unprotect SPB bit (USPB) SPB=0 sector protect USPB=0 SPB bit is disabled SPB=1 sector unprotect USPB=1 SPB bit is enabled SPB 0 USPB 0 DPB 1 SA 1 SPB 1 USPB 1 DPB 2 SA 2 SPB 2 USPB 2 : : : : : : : : DPB N-1 SA N-1 SPB N-1 USPB N-1 DPB N SA N SPB N USPB N P/N:PM1544 REV. 1.5, OCT. 30, 2013 25 MX29GL256F 1. Lock Register User can choose the sector protecting method via setting Lock Register bits as Q1 and Q2. Lock Register is a 16-bit one-time programmable register. Once programming either Q1 or Q2, they will be locked in that mode and the others will be disabled permanently. Q1 and Q2 can not be programmed at the same time, otherwise the device will abort the operation. If users select Password Protection mode, the password setting is required. Users can set password by issuing password program command. Lock Register bits Q15-Q3 Q2 Q1 Q0 Password Protection Mode Solid Protection Mode Secured Silicon Sector Don't care Lock Bit Lock Bit Protection Bit Please refer to the command for Lock Register command set about how to read and program the Lock Register bits. Figure 2. Lock Register Program Algorithm START Write Data AAH, Address 555H Lock register command set Entry Write Data 55H, Address 2AAH Write Data 40H, Address 555H Write Data A0H, Address don’t care Lock register data program Write Program Data, Address don’t care Data # Polling Algorithm Done YES NO NO Pass Q5 = 1 YES Exit Lock Register command Fail Reset command P/N:PM1544 REV. 1.5, OCT. 30, 2013 26 MX29GL256F 2. Solid Protection Mode 2.1 Solid write Protection Bits (SPB) The Solid write Protection bits (SPB) are nonvolatile bit with the same endurances as the Flash memory. Each SPB is assigned to each sector individually. The SPB is preprogrammed, and verified prior to erasure are managed by the device, so system monitoring is not necessary. When SPB is set to “0”, the associated sector may be protected, preventing any program or erase operation on this sector. Whether the sector is protected depends also upon the value of the USPB, as described elsewhere. The SPB bits are set individually by SPB program command. However, it cannot be cleared individually. Issuing the All SPB Erase command will erase all SPB in the same time. During SPB programming period, the read and write operations are disabled for normal sector until exiting this mode. To unprotect a protected sector, the SPB lock bit must be cleared first by using a hardware reset or a power-up cycle. After the SPB lock bit is cleared, the SPB status can be changed to the desired settings. To lock the Solid Protection Bits after the modification has finished, the SPB Lock Bit must be set once again. To verify the state of the SPB for a given sector, issuing a SPB Status Read Command to the device is required. Refer to the flow chart for details in Figure 3. 2.2 Dynamic write Protection Bits (DPB) The Dynamic Protection features a volatile type protection to each individual sector. It can protect sectors from being unintentionally changed, and is easy to disable. All Dynamic write Protection bit (DPB) can be modified individually. DPBs protect the unprotected sectors with their SPBs cleared. To modify the DPB status by issuing the DPB Set (programmed to “0”) or DPB Clear (erased to “1”) commands, and place each sector in the protected or unprotected state seperately. After the DPB Clear command is issued (erased to “1”), the sector may be modified depending on the SPB state of that sector. The DPBs are default to be erased to “1” when first shipped from factory. P/N:PM1544 REV. 1.5, OCT. 30, 2013 27 MX29GL256F 2.3 Temporary Un-protect Solid write Protect Bits (USPB) Temporary Un-protect Solid write Protect Bits are volatile. They are unique for each sector and can be individually modified. Software can temporarily unprotect write protect sectors despite of SPB's property when DPBs are cleared. While the USPB is set (to “0”), the corresponding sector's SPB property is masked. Notes: 1. Upon power up, the USPBs are cleared (all “1”). The USPBs can be set (to “0”) or cleared (to “1”) as often as needed. The hardware reset will reset USPB/DPB to their default values. 2. To change the protected sector status of solid write protect bit, users don't need to clear all SPBs. The users can just implement software to set corresponding USPB to "0", in which the corresponding DPB status is cleared too. Consequently, the original solid write protect status of protected sectors can be temporarily changed. Figure 3. SPB Program Algorithm SPB command set entry Program SPB Read Q7~Q0 Twice NO Q6 Toggle ? YES Q5 = 1 ? NO Wait 500 µs YES Read Q7~Q0 Twice Read Q7~Q0 Twice NO Q6 Toggle ? YES Q0= '1' (Erase) '0' (Program) NO YES Program Fail Write Reset CMD Pass SPB command set Exit Note: SPB program/erase status polling flowchart: check Q6 toggle, when Q6 stop toggle, the read status is 00H /01H (00H for program/ 01H for erase), otherwise, the status is “fail” and “exit”. P/N:PM1544 REV. 1.5, OCT. 30, 2013 28 MX29GL256F 3. Solid Protection Bit Lock Bit The Solid Protection Bit Lock Bit (SPBLK) is assigned to control all SPB status. It is an unique and volatile. When SPBLK=0 (set), all SPBs are locked and can not be changed. When SPBLK=1 (cleared), all SPBs are allowed to be changed. There is no software command sequence requested to unlock this bit, unless the device is in the password protection mode. To clear the SPB Lock Bit, just execute a hardware reset or a power-up cycle. In order to prevent modification, the SPB Lock Bit must be set (SPBLK=0) after all SPBs are set to desired status. 4. Password Protection Method The security level of Password Protection Method is higher than the Solid protection mode. The 64 bit password is requested before modifying SPB lock bit status. When device is under password protection mode, the SPB lock bit is set as “0”, after a power-up cycle or Reset Command. A correct password is required for password Unlock command to unlock the SPB lock bit. Await 2us is necessary to unlock the device after a valid password is given. After that, the SPB bits are allowed to be changed. The Password Unlock command is issued slower than 2 μs every time, to prevent hacker from trying all the 64-bit password combinations. There are a few steps to start password protection mode: (1). Set a 64-bit password for verification before entering the password protection mode. This verification is only allowed in password programming. (2). Set the Password Protection Mode Lock Bit to”0” to activate the password protection mode. Once the password protection mode lock bit is programmed, the programmed Q2 bit can not be erased any more and the device will remain permanently in password protection mode. The previous set 64-bit password can not be retrieved or programmed. All the commands to the password-protected address will also be disabled. All the combinations of the 64-bit password can be used as a password, and programming the password does not require special address. The password is defaulted to be all “1” when shipped from the factory. Under password program command, only "0" can be programmed. In order to prevent access, the Password Mode Locking Bit must be set after the Password is programmed and verified. To set the Password Mode Lock Bit will prevent this 64-bits password to be read on the data bus. Any modification is impossible then, and the password can not be checked anymore after the Password Mode Lock Bit is set. P/N:PM1544 REV. 1.5, OCT. 30, 2013 29 MX29GL256F Sector Protection Status Table DPB clear clear clear clear set set set set Protection Bit Status SPB clear clear set set clear clear set set USPB clear set clear set clear set clear set Sector Status Unprotect Unprotect Protect Unprotect Protect Protect Protect Protect Notes: If SPBLK is set, SPB will be unchangeable. If SPBLK is cleared, SPB will be changeable. P/N:PM1544 REV. 1.5, OCT. 30, 2013 30 MX29GL256F SECURITY SECTOR FLASH MEMORY REGION The Security Sector region is an extra OTP memory space of 128 words in length. The security sector can be locked upon shipping from factory, or it can be locked by customer after shipping. Customer can issue Security Sector Factory Protect Verify and/or Security Sector Protect Verify to query the lock status of the device. In factory-locked device, security sector region is protected when shipped from factory and the security silicon sector indicator bit is set to "1". In customer lockable device, security sector region is unprotected when shipped from factory and the security silicon indicator bit is set to "0". Factory Locked: Security Sector Programmed and Protected at the Factory In a factory locked device, the Security Sector is permanently locked before shipping from the factory. The device will have a 16-byte (8-word) ESN in the security region. The ESN occupies addresses 00000h to 0000Fh in byte mode or 00000h to 00007h in word mode. Secured Silicon Sector Address Range Standard Factory Locked 000000h-000007h ESN 000008h-00007Fh Unavailable Express Flash Factory Locked ESN or Determined by Customer Determined by Customer Customer Lockable Determined by Customer Customer Lockable: Security Sector NOT Programmed or Protected at the Factory When the security feature is not required, the security region can act as an extra memory space. Security silicon sector can also be protected by two methods. Note that once the security silicon sector is protected, there is no way to unprotect the security silicon sector and the content of it can no longer be altered. After the security silicon is locked and verified, system must write Exit Security Sector Region, go through a power cycle, or issue a hardware reset to return the device to read normal array mode. P/N:PM1544 REV. 1.5, OCT. 30, 2013 31 MX29GL256F TABLE 3. COMMAND DEFINITIONS Command 1st Bus Cycle 2nd Bus Cycle 3rd Bus Cycle 4th Bus Cycle 5th Bus Cycle 6th Bus Cycle Read Reset Mode Mode Addr Addr Data Data Addr Data Addr Data Addr Data Addr Data Addr Data XXX F0 Automatic Select Factory Protect Sector Protect Verify Silicon ID Device ID Verify Word Byte Word Byte Word Byte Word Byte 555 AAA 555 AAA 555 AAA 555 AAA AA AA AA AA AA AA AA AA 2AA 555 2AA 555 2AA 555 2AA 555 55 55 55 55 55 55 55 55 555 AAA 555 AAA 555 AAA 555 AAA 90 90 90 90 90 90 90 90 (Sector) (Sector) X00 X00 X01 X02 X03 X06 X02 X04 99/19(H) C2h C2h ID1 ID1 00/01 00/01 89/09(L) X0E X1C ID2 ID2 X0F X1E ID3 ID3 Security Sector Region Word Byte 555 AAA AA AA 2AA 555 55 55 555 AAA 88 88 Exit Security Sector Word 555 AA 2AA 55 555 90 Byte AAA AA 555 55 AAA 90 XXX XXX 00 00 Write to Write to Program/ Program/ Buffer Buffer Sector Program Chip Erase CFI Read Erase Erase Program Program Erase Suspend Resume Abort Reset confirm Word Byte Word Byte Word Byte Word Byte Word Byte Word Byte Word Byte Word Byte Word Byte Write to Buffer Program Command 1st Bus Cycle 2nd Bus Cycle 3rd Bus Cycle 4th Bus Cycle 5th Bus Cycle Addr Data Addr Data Addr Data Addr Data Addr Data 555 AA 2AA 55 555 A0 Addr Data AAA 555 AAA 555 AAA AA AA AA AA AA 555 2AA 555 2AA 555 55 55 55 55 55 AAA SA SA 555 AAA A0 25 25 F0 F0 Addr SA SA Data N-1 N-1 WA WA WD WD 6th Bus Cycle Addr WBL WBL Data WD WD SA 29 SA 29 555 AA 2AA 55 555 80 555 AA 2AA 55 AAA AA 555 55 AAA 80 AAA AA 555 55 555 AA 2AA 55 555 80 555 AA 2AA 55 Sec555 AAA tor 10 10 30 AAA AA 555 55 AAA 80 AAA AA 555 55 Sector 30 55 98 AA 98 xxx B0 xxx B0 xxx 30 xxx 30 WA= Write Address WD= Write Data SA= Sector Address N-1= Word Count WBL= Write Buffer Location PWD= Password PWDn=Password word 0, word 1, word n ID1/ID2/ID3: Refer to Table 2-2 for detailed ID. P/N:PM1544 REV. 1.5, OCT. 30, 2013 32 MX29GL256F Deep Power Down Command 4th Bus Cycle Addr Data Addr Data Addr Data Addr Data 5th Bus Cycle 6th Bus Cycle 7th Bus Cycle 8th Bus Cycle 9th Bus Cycle 10th Bus Cycle 11th Bus Cycle Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data 1st Bus Cycle 2nd Bus Cycle 3rd Bus Cycle Enter Word 555 AA 2AA 55 XXX B9 Byte AAA AA 555 55 XXX B9 Password Protection Password Command Set Entry Byte Word Byte XXX 555 AAA AB AA AA 2AA 555 55 55 555 AAA 60 60 Exit Word XXX AB Password Program Word XXX A0 PWA PWD Byte XXX A0 PWA PWD Password Command Set Exit Word Byte Word Byte Word Byte X00 X00 00 00 XXX XXX PWD0 PWD0 25 25 90 90 X01 X01 00 00 XXX XXX PWD1 PWD1 03 03 00 00 X02 X02 X00 X00 PWD2 PWD2 PWD0 PWD0 X03 X03 X01 X01 PWD3 PWD3 PWD1 PWD1 Password Read Password Unlock X04 X02 X02 PWD4 PWD2 PWD2 X05 X03 X03 PWD5 PWD3 PWD3 X06 00 X04 PWD6 29 PWD4 X07 X05 PWD7 PWD5 X06 PWD6 X07 PWD7 00 29 P/N:PM1544 REV. 1.5, OCT. 30, 2013 33 MX29GL256F Lock Register Command 4th Bus Cycle Addr Data Addr Data Addr Data Addr Data 5th Bus Cycle Addr Data 1st Bus Cycle 2nd Bus Cycle 3rd Bus Cycle Command 4th Bus Cycle Addr Data Addr Data Addr Data Addr Data 5th Bus Cycle Addr Data 1st Bus Cycle 2nd Bus Cycle 3rd Bus Cycle Lock register Command Set Entry Word Byte 555 AAA AA AA 2AA 555 55 55 555 AAA 40 40 Global Non-Volatile Lock register Command Set Exit Word Byte Word Byte Word Byte XXX XXX XXX XXX XXX XXX A0 A0 DATA DATA 90 90 XXX XXX XXX XXX Data Data 00 00 Program Read SPB SPB All SPB SPB Status Command Program Erase Read Set Entry Word Byte Word Byte Word Byte Word Byte 555 AAA XXX XXX XXX XXX SA SA AA AA A0 A0 80 80 00/01 00/01 2AA 555 SA SA 00 00 55 55 00 00 30 30 555 AAA C0 C0 Global NonGlobal Volatile Freeze Volatile Volatile SPB SPB Lock SPB Lock DPB SPB Lock SPB Lock Command Command Command Command DPB Set DPB Clear Set Status Read Set Exit Set Entry Set Exit Set Entry Word Byte Word Byte Word Byte Word Byte Word Byte Word Byte Word Byte Word Byte XXX XXX 555 AAA XXX XXX XXX XXX XXX XXX 555 AAA XXX XXX XXX XXX 90 90 AA AA A0 A0 00/01 00/01 90 90 AA AA A0 A0 A0 A0 XXX XXX 2AA 555 XXX XXX XXX XXX 2AA 555 SA SA SA SA 00 00 55 55 00 00 00 00 55 55 00 00 01 01 555 AAA 555 AAA 50 50 E0 E0 Volatile Command Addr Data 2nd Bus Addr Cycle Data 3rd Bus Addr Cycle Data 4th Bus Addr Cycle Data 1st Bus Cycle 5th Bus Cycle DPB Status DPB Command Read Set Exit Word Byte Word Byte SA SA XXX XXX 00/01 00/01 90 90 XXX XXX 00 00 Addr Data Notes: * It is not recommended to adopt any other code not in the command definition table which will potentially enter the hidden mode. * For the SPB Lock and DPB Status Read "00" means lock (protect), "01" means unlock (unprotect). P/N:PM1544 REV. 1.5, OCT. 30, 2013 34 MX29GL256F COMMON FLASH MEMORY INTERFACE (CFI) MODE QUERY COMMAND AND COMMAND FLASH MEMORY INTERFACE (CFI) MODE The device features CFI mode. Host system can retrieve the operating characteristics, structure and vendorspecified information such as identifying information, memory size, byte/word configuration, operating voltages and timing information of this device by CFI mode. If the system writes the CFI Query command "98h", to address "55h"/"AAh" (depending on Word/Byte mode), the device will enter the CFI Query Mode, any time the device is ready to read array data. The system can read CFI information at the addresses given in Table 4. Once user enters CFI query mode, user can issue reset command to exit CFI mode and return to read array mode. The CFI unused area is reserved by Macronix. Table 4-1. CFI mode: Identification Data Values (Note 1) (All values in these tables are in hexadecimal) Description Query-unique ASCII string "QRY" Primary vendor command set and control interface ID code Address for primary algorithm extended query table Alternate vendor command set and control interface ID code Address for alternate algorithm extended query table Address (h) (Word Mode) 10 11 12 13 14 15 16 17 18 19 1A Address (h) (Byte Mode) 20 22 24 26 28 2A 2C 2E 30 32 34 Data (h) 0051 0052 0059 0002 0000 0040 0000 0000 0000 0000 0000 Note 1. Query data are always presented on the lowest data output Q7~Q0 only, Q8~Q15 are "0". Table 4-2. CFI mode: System Interface Data Values Description Vcc supply minimum program/erase voltage Vcc supply maximum program/erase voltage VPP supply minimum program/erase voltage VPP supply maximum program/erase voltage Typical timeout per single word/byte write, 2n us Typical timeout for maximum-size buffer write, 2n us (00h, not support) Typical timeout per individual block erase, 2n ms Typical timeout for full chip erase, 2n ms (00h, not support) Maximum timeout for word/byte write, 2n times typical Maximum timeout for buffer write, 2n times typical Maximum timeout per individual block erase, 2n times typical Maximum timeout for chip erase, 2n times typical (00h, not support) P/N:PM1544 Address (h) (Word Mode) 1B 1C 1D 1E 1F Address (h) (Byte Mode) 36 38 3A 3C 3E 20 40 0006 21 22 23 24 25 42 44 46 48 4A 0009 0013 0003 0005 0003 26 4C 0002 Data (h) 0027 0036 0000 0000 0003 REV. 1.5, OCT. 30, 2013 35 MX29GL256F Table 4-3. CFI mode: Device Geometry Data Values Address (h) (Word Mode) 27 Device size = 2n in number of bytes 28 Flash device interface description (02=asynchronous x8/x16) 29 2A Maximum number of bytes in buffer write = 2n (00h, not support) 2B 2C Number of erase regions within device (01h:uniform, 02h:boot) 2D Index for Erase Bank Area 1: 2E [2E,2D] = # of same-size sectors in region 1-1 2F [30, 2F] = sector size in multiples of 256K-bytes 30 31 32 Index for Erase Bank Area 2 33 34 35 36 Index for Erase Bank Area 3 37 38 39 3A Index for Erase Bank Area 4 3B 3C Description P/N:PM1544 Address (h) (Byte Mode) 4E 50 52 54 56 58 5A 5C 5E 60 62 64 66 68 6A 6C 6E 70 72 74 76 78 Data (h) 0019 0002 0000 0006 0000 0001 00FF 0000 0000 0002 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 REV. 1.5, OCT. 30, 2013 36 MX29GL256F Table 4-4. CFI mode: Primary Vendor-Specific Extended Query Data Values Address (h) (Word Mode) 40 41 42 43 44 45 46 47 48 49 4A 4B Address (h) (Byte Mode) 80 82 84 86 88 8A 8C 8E 90 92 94 96 4C 98 0002 4D 9A 0095 4E 9C 00A5 WP# Protection 04=Uniform sectors bottom WP# protect 05=Uniform sectors top WP# protect 4F 9E 0004/ 0005 Program Suspend (0=not supported, 1=supported) 50 A0 0001 Description Query - Primary extended table, unique ASCII string, PRI Major version number, ASCII Minor version number, ASCII Unlock recognizes address (0= recognize, 1= don't recognize) Erase suspend (2= to both read and program) Sector protect (N= # of sectors/group) Temporary sector unprotect (1=supported) Sector protect/Chip unprotect scheme Simultaneous R/W operation (0=not supported) Burst mode (0=not supported) Page mode (0=not supported, 01 = 4 word page, 02 = 8 word page) Minimum ACC(acceleration) supply (0= not supported), [D7:D4] for volt, [D3:D0] for 100mV Maximum ACC(acceleration) supply (0= not supported), [D7:D4] for volt, [D3:D0] for 100mV P/N:PM1544 Data (h) 0050 0052 0049 0031 0033 0014 0002 0001 0000 0008 0000 0000 REV. 1.5, OCT. 30, 2013 37 MX29GL256F ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM STRESS RATINGS Storage Temperature Voltage Range VCC -65°C to +150°C -0.5V to +4.0 V VI/O -0.5V to +4.0 V A9 , WP#/ACC The other pins. -0.5V to +10.5 V -0.5V to Vcc +0.5V Output Short Circuit Current (less than one second) 200 mA OPERATING TEMPERATURE AND VOLTAGE Industrial (I) Grade Surrounding Temperature (TA ) -40°C to +85°C +2.7 V to 3.6 V VCC Supply Voltages Full VCC range Regulated VCC range +3.0 V to 3.6 V VI/O range 1.65V to VCC NOTICE: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is stress rating only and functional operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended period may affect reliability. 2. Specifications contained within the following tables are subject to change. 3. During voltage transitions, all pins may overshoot GND to -2.0V and Vcc to +2.0V for periods up to 20ns, see below Figure. Maximum Positive Overshoot Waveform Maximum Negative Overshoot Waveform 20ns 20ns 20ns Vcc + 2.0V GND GND - 2.0V Vcc 20ns 20ns P/N:PM1544 20ns REV. 1.5, OCT. 30, 2013 38 MX29GL256F DC CHARACTERISTICS Symbol Description Iilk Input Leak Iilk9 A9 Leak Iolk Output Leak Icr1 Icr2 Min. Typ. Max. Remark ±2.0uA 35uA A9=10.5V ±1.0uA Read Current CE#=Vil, OE#=Vih, VCC=VCCmax; f=1MHz CE#=Vil, OE#=Vih, VCC=VCCmax; f=5MHz CE#=Vil, OE#=Vih, VCC=VCCmax; f=10MHz 5mA 15mA 10mA 20mA 15mA 30mA 1.5mA 5mA CE#=Vil, OE#=Vih, VCC=VCCmax; f=10MHz 3mA 10mA CE#=Vil, OE#=Vih, VCC=VCCmax; f=33MHz VCC Page Read Current Iio VI/O non-active current 0.2mA 10mA Icw Write Current 14mA 30mA Isb Standby Current 20uA 50uA Isbr Reset Current 20uA 50uA Isbs Sleep Mode Current 20uA 50uA Idpd Vcc deep power down current 1uA 10uA 1mA 3mA CE#=Vil, OE#=Vih 7mA 14mA CE#=Vil, OE#=Vih Vol Accelerated Pgm Current, WP#/Acc pin (Word/Byte) Accelerated Pgm Current, Vcc pin, (Word/Byte) Input Low Voltage Input High Voltage Very High Voltage for Auto Select/ Accelerated Program Output Low Voltage Voh Ouput High Voltage Vlko Low Vcc Lock-out voltage Icp1 Icp2 Vil Vih Vhv -0.1V 0.7xVI/O 0.3xVI/O VI/O+0.3V 9.5V 10.5V 0.45V 0.85xVI/O 2.1V CE#=Vil, OE#=Vih VCC=VCCmax, other pin disable VCC=VCCmax, RESET# enable, other pin disable Iol=100uA Ioh=-100uA 2.4V Note: Sleep mode enables the lower power when address remain stable for taa+1us. P/N:PM1544 REV. 1.5, OCT. 30, 2013 39 MX29GL256F SWITCHING TEST CIRCUITS 3.3V 2.7KΩ DEVICE UNDER TEST CL 6.2KΩ Test Condition Output Load Capacitance, CL : 1TTL gate, 30pF Rise/Fall Times : 5ns Input Pulse levels :0.0 ~ VI/O In/Out reference levels :0.5VI/O SWITCHING TEST WAVEFORMS VI/O VI/O / 2 0.0V VI/O / 2 Test Points INPUT OUTPUT P/N:PM1544 REV. 1.5, OCT. 30, 2013 40 MX29GL256F AC CHARACTERISTICS Symbol Description Taa Tpa Tce Toe Tdf Tsrw Toh Trc Twc Tcwc Tas Taso Tah Taht Tds Tdh Tvcs Tcs Tch Toes Toeh Tws Twh Tcepw Tcepwh Twp Twph VI/O=VCC VI/O=1.65 to VCC VI/O=VCC Page access time VI/O=1.65 to VCC VI/O=VCC Valid data output after CE# low VI/O=1.65 to VCC VI/O=VCC Valid data output after OE# low VI/O=1.65 to VCC Data output floating after OE# high or CE# high Latency between read and write operation (Note) Output hold time from the earliest rising edge of address, CE#, OE# Read period time Write period time Command write period time 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 Vcc setup time Chip enable Setup time Chip enable hold time Output enable setup time Read Output enable hold time Toggle & Data# Polling Valid data output after address WE# setup time WE# hold time CE# pulse width CE# pulse width high WE# pulse width WE# pulse width high active time by VI/O=VCC Tbusy Program/Erase RY/BY# VI/O=1.65 to VCC Tghwl Read recover time before write Tghel Read recover time before write P/N:PM1544 29GL256F (VCC=2.7V~3.6V) Min. Typ. Max. 100 110 25 30 100 110 25 30 20 35 29GL256F (VCC=3.0V~3.6V) Unit Min. Typ. Max. 90 ns 110 ns 25 ns 30 ns 90 ns 110 ns 25 ns 30 ns 20 ns 35 ns 0 0 ns 100 100 100 0 90 90 90 0 ns ns ns ns 15 15 ns 45 45 ns 0 0 ns 30 0 500 0 0 0 0 30 0 500 0 0 0 0 ns ns us ns ns ns ns 10 10 ns 0 0 35 30 35 30 0 0 35 30 35 30 ns ns ns ns ns ns ns ns ns ns 100 110 0 0 90 110 0 0 REV. 1.5, OCT. 30, 2013 41 MX29GL256F 29GL256F (VCC=2.7V~3.6V) Min. Typ. Max. 10 10 10 0.5 3.5 50 200 Symbol Description Twhwh1 Twhwh1 Twhwh1 Twhwh2 Tbal Trdp Program operation Byte Program operation Word Acc program operation (Word/Byte) Sector erase operation Sector add hold time Release from deep power down mode 29GL256F (VCC=3.0V~3.6V) Unit Min. Typ. Max. 10 us 10 us 10 us 0.5 3.5 sec 50 us 200 us Note: Not 100% tested. P/N:PM1544 REV. 1.5, OCT. 30, 2013 42 MX29GL256F WRITE COMMAND OPERATION Figure 4. COMMAND WRITE OPERATION Tcwc CE# Vih Vil Tch Tcs WE# Vih Vil Toes OE# Twph Twp Vih Vil Addresses Vih VA Vil Tah Tas Tdh Tds Vih Data Vil DIN VA: Valid Address P/N:PM1544 REV. 1.5, OCT. 30, 2013 43 MX29GL256F READ/RESET OPERATION Figure 5. READ TIMING WAVEFORMS CE# Tce Vih Vil Vih WE# OE# Vil Toeh Tdf Toe Vih Vil Toh Taa Trc Vih Addresses ADD Valid Vil Tsrw Outputs Voh HIGH Z DATA Valid HIGH Z Vol P/N:PM1544 REV. 1.5, OCT. 30, 2013 44 MX29GL256F AC CHARACTERISTICS Item Description Setup Speed Unit Trp1 RESET# Pulse Width (During Automatic Algorithms) MIN 10 us Trp2 RESET# Pulse Width (NOT During Automatic Algorithms) MIN 500 ns Trh RESET# High Time Before Read MIN 200 ns Trb1 RY/BY# Recovery Time (to CE#, OE# go low) MIN 0 ns Trb2 RY/BY# Recovery Time (to WE# go low) MIN 50 ns Tready1 RESET# PIN Low (During Automatic Algorithms) to Read or Write MAX 20 us Tready2 RESET# PIN Low (NOT During Automatic Algorithms) to Read or Write MAX 500 ns Figure 6. RESET# TIMING WAVEFORM Trb1 CE#, OE# Trb2 WE# Tready1 RY/BY# RESET# Trp1 Reset Timing during Automatic Algorithms CE#, OE# Trh RY/BY# RESET# Trp2 Tready2 Reset Timing NOT during Automatic Algorithms P/N:PM1544 REV. 1.5, OCT. 30, 2013 45 MX29GL256F ERASE/PROGRAM OPERATION Figure 7. AUTOMATIC CHIP ERASE TIMING WAVEFORM CE# Tch Twhwh2 Twp WE# Twph Tcs Tghwl OE# Last 2 Erase Command Cycle Twc Address 2AAh VA 555h Tds Data Read Status Tah Tas Tdh 55h VA In Progress Complete 10h Tbusy Trb RY/BY# P/N:PM1544 REV. 1.5, OCT. 30, 2013 46 MX29GL256F Figure 8. AUTOMATIC CHIP ERASE ALGORITHM FLOWCHART START Write Data AAH Address 555H Write Data 55H Address 2AAH Write Data 80H Address 555H Write Data AAH Address 555H Write Data 55H Address 2AAH Write Data 10H Address 555H Data# Polling Algorithm or Toggle Bit Algorithm NO Data=FFh ? YES Auto Chip Erase Completed P/N:PM1544 REV. 1.5, OCT. 30, 2013 47 MX29GL256F Figure 9. AUTOMATIC SECTOR ERASE TIMING WAVEFORM Read Status CE# Tch Twhwh2 Twp WE# Twph Tcs Tghwl OE# Tbal Last 2 Erase Command Cycle Twc Address Tas Sector Address 0 2AAh Tds Tdh 55h Sector Address 1 Sector Address n Tah VA VA In Progress Complete 30h 30h 30h Data Tbusy Trb RY/BY# P/N:PM1544 REV. 1.5, OCT. 30, 2013 48 MX29GL256F Figure 10. AUTOMATIC SECTOR ERASE ALGORITHM FLOWCHART START Write Data AAH Address 555H Write Data 55H Address 2AAH Write Data 80H Address 555H Write Data AAH Address 555H Write Data 55H Address 2AAH Write Data 30H Sector Address Last Sector NO to Erase YES Data# Polling Algorithm or Toggle Bit Algorithm Data=FFh NO YES Auto Sector Erase Completed P/N:PM1544 REV. 1.5, OCT. 30, 2013 49 MX29GL256F Figure 11. ERASE SUSPEND/RESUME FLOWCHART START Write Data B0H Toggle Bit checking Q6 NO ERASE SUSPEND not toggled YES Read Array or Program Reading or Programming End NO YES Write Data 30H ERASE RESUME Continue Erase Another Erase Suspend ? NO YES P/N:PM1544 REV. 1.5, OCT. 30, 2013 50 MX29GL256F Figure 12. AUTOMATIC PROGRAM TIMING WAVEFORMS CE# Tch Twhwh1 Twp WE# Tcs Twph Tghwl OE# Last 2 Program Command Cycle 555h Address Last 2 Read Status Cycle Tah Tas VA PA Tds VA Tdh A0h Status PD DOUT Data Tbusy Trb RY/BY# Figure 13. ACCELERATED PROGRAM TIMING DIAGRAM Vcc (min) Vcc GND Tvcs Vhv (9.5V ~ 10.5V) WP#/ACC Vil or Vih Vil or Vih 250ns 250ns P/N:PM1544 REV. 1.5, OCT. 30, 2013 51 MX29GL256F Figure 14. CE# CONTROLLED WRITE TIMING WAVEFORM WE# Tcepw Tws Twhwh1 or Twhwh2 Twh CE# Tcepwh Tghwl OE# Tah Tas Address 555h Tds Data VA PA VA Tdh A0h Status PD DOUT Tbusy RY/BY# P/N:PM1544 REV. 1.5, OCT. 30, 2013 52 MX29GL256F Figure 15. AUTOMATIC PROGRAMMING ALGORITHM FLOWCHART START Write Data AAH Address 555H Write Data 55H Address 2AAH Write Data A0H Address 555H Write Program Data/Address Data# Polling Algorithm or Toggle Bit Algorithm next address Read Again Data: Program Data? No YES No Last Word to be Programed YES Auto Program Completed P/N:PM1544 REV. 1.5, OCT. 30, 2013 53 MX29GL256F Figure 16. SILICON ID READ TIMING WAVEFORM VCC 3V Vhv ADD Vih A9 Vil Vih ADD A0 Vil Taa Taa Taa Taa Vih A1 Vil Vih A2 Vil Vih ADD CE# Vil Disable WE# Enable Tce Vih Vil OE# Vih Toe Tdf Vil Toh DATA Q15-Q0 Toh Toh Toh Vih Vil DATA OUT DATA OUT DATA OUT DATA OUT Manufacturer ID Device ID Cycle 1 Device ID Cycle 2 Device ID Cycle 3 P/N:PM1544 REV. 1.5, OCT. 30, 2013 54 MX29GL256F WRITE OPERATION STATUS Figure 17. DATA# POLLING TIMING WAVEFORMS (DURING AUTOMATIC ALGORITHMS) Tce CE# Tch WE# Toe OE# Toeh Tdf Trc Address VA VA Taa Toh Q7 Complement Complement True Valid Data Q6-Q0 Status Data Status Data True Valid Data High Z High Z Tbusy RY/BY# P/N:PM1544 REV. 1.5, OCT. 30, 2013 55 MX29GL256F Figure 18. STATUS POLLING FOR WORD PROGRAM/ERASE Start Read Data at valid address (Note 1) No Q7 = Data# ? Yes Q5 = 1 ? No Yes Read Data at valid address (Note 1) No Q7 = Data# ? (Note 2) Yes Pass Fail Notes: 1. For programming, valid address means program address. For erasing, valid address means erase sectors address. 2. Q7 may change simultaneously with Q5, so even Q5=1, Q7 should be reverify. P/N:PM1544 REV. 1.5, OCT. 30, 2013 56 MX29GL256F Figure 19. STATUS POLLING FOR WRITE BUFFER PROGRAM Start Read Data at last write address (Note 1) Q7 = Data# ? No Yes Q1=1 ? Only for write buffer program Yes No No Q5=1 ? Read Data at last write address (Note 1) Yes Read Data at last write address (Note 1) Q7 = Data# ? (Note 2) No Q7 = Data# ? (Note 2) No Yes Write Buffer Abort Yes Fail Pass Notes: 1. For programming, valid address means program address. For erasing, valid address means erase sectors address. 2. Q7 may change simultaneously with Q5, so even Q5=1, Q7 should be reverify. P/N:PM1544 REV. 1.5, OCT. 30, 2013 57 MX29GL256F Figure 20. TOGGLE BIT TIMING WAVEFORMS (DURING AUTOMATIC ALGORITHMS) Tce CE# Tch WE# Toe OE# Toeh Tdf Trc Address Taht Taso VA VA VA VA Taa Toh Q6/Q2 Valid Status (first read) Valid Status Valid Data (second read) (stops toggling) Valid Data Tbusy RY/BY# VA : Valid Address P/N:PM1544 REV. 1.5, OCT. 30, 2013 58 MX29GL256F Figure 21. TOGGLE BIT ALGORITHM Start Read Data Twice (Note 1) No Q6 Toggle ? Yes Q5 = 1 ? No Yes Read Data Twice (Note 1, 2) No Q6 Toggle ? Yes Pass Fail Notes: 1. Toggle bit Q7-Q0 should be read twice to check if it is toggling. 2. While Q5=1, the toggle bit (Q6) may stop toggling. Therefore, the system should be read again. P/N:PM1544 REV. 1.5, OCT. 30, 2013 59 MX29GL256F AC CHARACTERISTICS WORD/BYTE CONFIGURATION (BYTE#) Test Setup Max. Max. Min. Parameter Description Telfl/Telfh Tflqz Tfhqv CE# to BYTE# from L/H BYTE# from L to Output Hiz BYTE# from H to Output Active All Speed Options Unit 5 30 90 ns ns ns Figure 22. BYTE# TIMING WAVEFORM FOR READ OPERATIONS (BYTE# switching from byte mode to word mode) CE# OE# Telfh BYTE# Q14~Q0 DOUT (Q0-Q7) Q15/A-1 VA DOUT (Q0-Q14) DOUT (Q15) Tfhqv P/N:PM1544 REV. 1.5, OCT. 30, 2013 60 MX29GL256F Figure 23. PAGE READ TIMING WAVEFORM VALID ADD Amax:A3 (A-1),A0,A1,A2 1'st ADD Taa DATA 2'nd ADD 3'rd ADD Tpa Tpa Data 1 Data 2 Data 3 Toe OE# Tce CE# Note: CE#, OE# are enable. Page size is 8 words in Word mode, 16 bytes in Byte mode. Address are A2~A0 for Word mode, A2~A-1 for Byte mode. P/N:PM1544 REV. 1.5, OCT. 30, 2013 61 MX29GL256F AC CHARACTERISTICS ITEM WEB high to release from deep power down mode WEB high to deep power down mode TYP MAX tRDP 100us 200us tDP 10us 20us Figure 24. DEEP POWER DOWN MODE WAVEFORM CEB WEB ADD DATA tDP 55 XX 2AA AA 55 tRDP XX (don't care) AB B9 Standby mode P/N:PM1544 Deep power down mode Standby mode REV. 1.5, OCT. 30, 2013 62 MX29GL256F Figure 25. WRITE BUFFER PROGRAM FLOWCHART Write CMD: Data=AAh, Addr=555h Write CMD: Data=55h, Addr=2AAh Write CMD: Data=29h, Addr=SA Write CMD: Data=25h, Addr=SA Polling Status Write CMD: Data=PWC, Addr=SA PWC=PWC-1 Yes Write CMD: Data=PGM_data, Addr=PGM_addr Want to Abort ? PWC =0? No Return to read Mode No Fail Yes Write a different sector address to cause Abort Yes No No Pass Yes Yes Write Buffer Abort No SA: Sector Address of to be Programmed page PWC: Program Word Count Write Abort reset CMD to return to read Mode P/N:PM1544 Write reset CMD to return to read Mode REV. 1.5, OCT. 30, 2013 63 MX29GL256F RECOMMENDED OPERATING CONDITIONS At Device Power-Up AC timing illustrated in Figure A is recommended for the supply voltages and the control signals at device powerup (e.g. Vcc and CE# ramp up simultaneously). If the timing in the figure is ignored, the device may not operate correctly. VCC VI/O VCC(min) GND Tvr Tvcs VI/O(min) GND Tvr Tvios Tf CE# WE# Tce Vil Vih Vil Tf OE# WP#/ACC Tr Vil Taa Vih Tr or Tf Valid Address Vil Voh DATA Toe Vih Tr or Tf ADDRESS Tr Vih High Z Valid Ouput Vol Vih Vil Figure A. AC Timing at Device Power-Up Symbol Tvr Tr Tf Tvcs Tvios Parameter VCC Rise Time Input Signal Rise Time Input Signal Fall Time VCC Setup Time VI/O Setup Time Min. 20 500 500 Max. 500000 20 20 Unit us/V us/V us/V us us Notes: 1. VI/O