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A29040L-90 Datasheet(PDF) 10 Page - AMIC Technology |
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A29040L-90 Datasheet(HTML) 10 Page - AMIC Technology |
10 / 30 page A29040 Series PRELIMINARY (August, 2001, Version 0.5) 10 AMIC Technology, Inc. Table 4. A29040 Command Definitions Bus Cycles (Notes 2 - 4) First Second Third Fourth Fifth Sixth Command Sequence (Note 1) Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data Read (Note 5) 1 RA RD Reset (Note 6) 1 XXX F0 Manufacturer ID 4 555 AA 2AA 55 555 90 X00 37 Device ID 4 555 AA 2AA 55 555 90 X01 86 Continuation ID 4 555 AA 2AA 55 555 90 X03 7F 00 Autoselect (Note 7) Sector Protect Verify (Note 8) 4 555 AA 2AA 55 555 90 SA X02 01 Program 4 555 AA 2AA 55 555 A0 PA PD Chip Erase 6 555 AA 2AA 55 555 80 555 AA 2AA 55 555 10 Sector Erase 6 555 AA 2AA 55 555 80 555 AA 2AA 55 SA 30 Erase Suspend (Note 9) 1 XXX B0 Erase Resume (Note 10) 1 XXX 30 Legend: X = Don't care RA = Address of the memory location to be read. RD = Data read from location RA during read operation. PA = Address of the memory location to be programmed. Addresses latch on the falling edge of the WE or CE pulse, whichever happens later. PD = Data to be programmed at location PA. Data latches on the rising edge of WE or CE pulse, whichever happens first. SA = Address of the sector to be verified (in autoselect mode) or erased. Address bits A18 - A16 select a unique sector. Note: 1. See Table 1 for description of bus operations. 2. All values are in hexadecimal. 3. Except when reading array or autoselect data, all bus cycles are write operation. 4. Address bits A18 - A11 are don't cares for unlock and command cycles, unless SA or PA required. 5. No unlock or command cycles required when reading array data. 6. The Reset command is required to return to reading array data when device is in the autoselect mode, or if I/O5 goes high (while the device is providing status data). 7. The fourth cycle of the autoselect command sequence is a read cycle. 8. The data is 00h for an unprotected sector and 01h for a protected sector. See "Autoselect Command Sequence" for more information. 9. The system may read and program in non-erasing sectors, or enter the autoselect mode, when in the Erase Suspend mode. 10. The Erase Resume command is valid only during the Erase Suspend mode. 11. The time between each command cycle has to be less than 50 µs. |
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