W29GL256SH9T-TR Datasheet, PDF (57/88 Pages) Winbond – 256M-BIT 3.0-VOLT PARALLEL FLASH MEMORY WITH PAGE MODE

W29GL256S
8.20 Common Flash Interface and Device ID (CFI-ID)
The Manufacturer ID, Device ID, Sector Protection status, and basic feature information for the device
are available when the Device ID portion of the MMO is read, locations 0h to 0Fh.
The sector protection status can be read by entering the CFI-ID command which contains the sector
address (SA) and location 02h. If another sector protection status is required, it will be necessary to
exit ID MMO and re-enter the CDI-ID command again with the new sector address. Reading location
02h requires an access time of tACC, #CE should go HIGH before the read and to initiate an
asynchronous read access #CE should return LOW again. Page mode read is not support for reading
between location 02h and the other ID locations. However, Page mode read supports reads between
ID locations other than 02h.
Table 8-15 ID (Autoselect) Address Map
Description
Manufacture ID
Device ID
Protection Verification
Indicator Bits
DQ15-DQ08 = 1 (Reserved)
DQ7: Factory Locked Security Sector Region
1 = Locked, 0 = Not Locked
DQ6: Customer Locked Security Sector Region
1 = Locked, 0 = Not Locked
DQ5 = 1 (Reserved)
DQ4 - WP# Protects
0 = lowest address Sector, 1 = highest address Sector
DQ3 - DQ0 = 1 (Reserved)
RFU
Lower Software Bits
Bit 0: Status Register Support
1 = Yes, 0 = No
Bit 1:DQ Polling Support
1 = Yes, 0 = No
Bit 3-2: Command Set Support
11 = reserved
10 = reserved
01 = Reduced Command Set
00 = Classic Command set
Bits 4-15: Reserved = 0
Upper Software Bits
Address
(SA) + 0000h
(SA) + 0001h
(SA) + 0002h
(SA) + 0003h
(SA) + 0004h
(SA) + 0005h
(SA) + 0006h
(SA) + 0007h
(SA) + 0008h
(SA) + 0009h
(SA) + 000Ah
(SA) + 000Bh
(SA) + 000Ch
(SA) + 000Dh
Data
00EFh
227Eh
0000h/0001h
Same as
description
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
0003h
Reserved
Publication Release Date: Jul 02, 2014
Revision C
57