m28w640fcb STMicroelectronics, m28w640fcb Datasheet - Page 17

• Manufacturer Part Number: m28w640fcb
• Description: 64 Mbit 4mb X16, Boot Block 3v Supply Flash Memory
• Manufacturer: STMicroelectronics

M28W640FCT, M28W640FCB
4.4
Table 3.
Read CFI Query command
The Read Query Command is used to read data from the Common Flash Interface (CFI)
Memory Area, allowing programming equipment or applications to automatically match their
interface to the characteristics of the device. One Bus Write cycle is required to issue the
Read Query Command. Once the command is issued subsequent Bus Read operations
read from the Common Flash Interface Memory Area. See
Interface
the Common Flash Interface memory area.
Hex Code
C0h
D0h
01h
10h
20h
2Fh
30h
40h
50h
56h
60h
70h
90h
98h
B0h
FFh
(CFI), Tables 26, 27, 28, 29,
Command codes
Block Lock confirm
Program
Erase
Block Lock-Down confirm
Double Word Program
Program
Clear Status Register
Quadruple Word Program
Block Lock, Block Unlock, Block Lock-Down
Read Status Register
Read Electronic Signature
Read CFI Query
Program/Erase Suspend
Protection Register Program
Program/Erase Resume, Block Unlock confirm
Read Memory Array
30
and
31
for details on the information contained in
Command
Appendix B: Common Flash
Command interface
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