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S29CD032J Datasheet(PDF) 72 Page - SPANSION |
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S29CD032J Datasheet(HTML) 72 Page - SPANSION |
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72 / 81 page  72 S29CD-J and S29CL-J Flash Family S29CD-J_CL-J_00_B7 October 11, 2012 Da ta Sh e e t 19. Appendix 1 19.1 Common Flash Memory Interface (CFI) The Common Flash Interface (CFI) specification outlines device and host system software interrogation handshake, which allows specific vendor-specified software algorithms to be used for entire families of devices. Software support can then be device-independent, JEDEC ID-independent, and forward- and backward-compatible for the specified flash device families. Flash vendors can standardize existing interfaces for long-term compatibility. This device enters the CFI Query mode when the system writes the CFI Query command, 98h, to address 55h in word mode (or address AAh in byte mode), any time the device is ready to read array data. The system can read CFI information at the addresses given in Table 19.1-Table 19.3. In order to terminate reading CFI data, the system must write the reset command. The system can also write the CFI query command when the device is in the autoselect mode. The device enters the CFI query mode, and the system can read CFI data at the addresses given in Table 19.1- Table 19.3. The system must write the reset command to return the device to the autoselect mode. For further information, please refer to the CFI Specification and CFI Publication 100. Contact a Spansion representative for copies of these documents. Table 19.1 CFI Query Identification String Addresses Data Description 10h 11h 12h 0051h 0052h 0059h Query Unique ASCII string QRY 13h 14h 0002h 0000h Primary OEM Command Set 15h 16h 0040h 0000h Address for Primary Extended Table 17h 18h 0000h 0000h Alternate OEM Command Set (00h = none exists) 19h 1Ah 0000h 0000h Address for Alternate OEM Extended Table (00h = none exists) Table 19.2 CFI System Interface String Addresses Data Description 1Bh (see description) VCC Min. (write/erase) DQ7–DQ4: volts, DQ3–DQ0: 100 millivolt 0025h = S29CD-J devices 0030h = S29CL-J devices 1Ch (see description) VCC Max. (write/erase) DQ7–DQ4: volts, DQ3–DQ0: 100 millivolt 0027h = S29CD-J devices 0036h = S29CL-J devices 1Dh 0000h VPP Min. voltage (00h = no VPP pin present) 1Eh 0000h VPP Max. voltage (00h = no VPP pin present) 1Fh 0004h Typical timeout per single word/doubleword program 2N µs 20h 0000h Typical timeout for Min. size buffer program 2N µs (00h = not supported) 21h 0009h Typical timeout per individual block erase 2 N ms 22h 0000h Typical timeout for full chip erase 2N ms (00h = not supported) 23h 0005h Max. timeout for word/doubleword program 2N times typical 24h 0000h Max. timeout for buffer write 2 N times typical 25h 0007h Max. timeout per individual block erase 2N times typical 26h 0000h Max. timeout for full chip erase 2N times typical (00h = not supported) |
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