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EN29SL400T-70TC Datasheet(PDF) 11 Page - Eon Silicon Solution Inc. |
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EN29SL400T-70TC Datasheet(HTML) 11 Page - Eon Silicon Solution Inc. |
11 / 40 page This Data Sheet may be revised by subsequent versions ©2004 Eon Silicon Solution, Inc., www.essi.com.tw or modifications due to changes in technical specifications. 11 EN29SL400 Rev. A, Issue Date: 2006/04/14 COMMAND DEFINITIONS The operations of EN29SL400 are selected by one or more commands written into the command register to perform Read/Reset Memory, Read ID, Read Sector Protection, Program, Sector Erase, Chip Erase, Erase Suspend and Erase Resume. Commands are made up of data sequences written at specific addresses via the command register. The sequences for the specified operation are defined in the Command Definitions table (Table 5). Incorrect addresses, incorrect data values or improper sequences will reset the device to Read Mode. Table 5. EN29SL400 Command Definitions Bus Cycles 1 st Cycle 2 nd Cycle 3 rd Cycle 4 th Cycle 5 th Cycle 6 th Cycle Command Sequence Addr Data Addr Data Addr Data Addr Data Add r Data Addr Data Read 1 RA RD Reset 1 xxx F0 000 7F Word 555 2AA 555 100 1C 000 7F Manufacturer ID Byte 4 AAA AA 555 55 AAA 90 200 1C Word 555 2AA 555 X01 2270 Device ID Top Boot Byte 4 AAA AA 555 55 AAA 90 X02 70 Word 555 2AA 555 X01 22F1 Device ID Bottom Boot Byte 4 AAA AA 555 55 AAA 90 X02 F1 XX00 Word 555 2AA 555 (SA) X02 XX01 00 Sector Protect Verify Byte 4 AAA AA 555 55 AAA 90 (SA) X04 01 Word 555 2AA 555 Program Byte 4 AAA AA 555 55 AAA A0 PA PD Word 555 2AA 555 555 2AA 555 Chip Erase Byte 6 AAA AA 555 55 AAA 80 AAA AA 555 55 AAA 10 Word 555 2AA 555 555 2AA Sector Erase Byte 6 AAA AA 555 55 AAA 80 AAA AA 555 55 SA 30 Erase Suspend 1 xxx B0 Erase Resume 1 xxx 30 Address and Data values indicated in hex RA = Read Address: address of the memory location to be read. This is a read cycle. RD = Read Data: data read from location RA during Read operation. This is a read cycle. PA = Program Address: address of the memory location to be programmed. X = Don’t-Care PD = Program Data: data to be programmed at location PA SA = Sector Address: address of the Sector to be erased or verified. Address bits A17-A12 uniquely select any Sector. Reading Array Data The device is automatically set to reading array data after power up. No commands are required to retrieve data. The device is also ready to read array data after completing an Embedded Program or Embedded Erase algorithm. Following an Erase Suspend command, Erase Suspend mode is entered. The system can read array data using the standard read timings, with the only difference in that if it reads at an address within erase suspended sectors, the device outputs status data. After completing a programming operation in the Erase Suspend mode, the system may once again read array data with the same exception. |
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