W29GL256SH9T-TR Datasheet, PDF (17/88 Pages) Winbond – 256M-BIT 3.0-VOLT PARALLEL FLASH MEMORY WITH PAGE MODE

W29GL256S
As mentioned previously, only one MMO may exist at any one time. Device commands affect only the
currently entered MMO. Not all commands are valid for each MMO. For a listed of valid commands,
see the Command Definition Tables in MMO sections of the table.
Some MMOs have non-volatile data that can be programmed
 Individual Protection Bits (IPB), also erase capable
 Lock Register
 Security Sector Region
Operating in a non-volatile MMO mode while performing a program or erase command, the MMO is
not readable while the internal algorithms is active. As soon as the function has completed, the MMO
mode remains active and is again readable. Suspend and Resume commands are ignored for these
non-volatile modes while these internal algorithms are active.
7.1 Flash Main Memory Array
The W29GL256S family is comprised of uniform 128KB sector size architecture. The table below
shows the sector architecture of the W29GL256S device.
Table 7-1 W29GL256S Sector and Memory Address Map
Sector
SA00
SA01
.
.
.
SA254
SA255
Sector Address
A23-A16
0000000
0000001
.
.
.
11111110
11111111
Sector Size
(KByte)
128
128
.
.
.
128
128
X16
Start / Finish
0000000h 000FFFFh
0010000h 001FFFFh
.
.
.
.
.
.
0FE0000h 0FEFFFFh
0FF0000h 0FFFFFFh
Note: This table has been reduced to show relative sector information for the entire device’s individual sectors
and their address ranges (sectors SA02-SA253 are not shown).
7.2 CFI and Device ID (CFI-ID)
There are two methods for systems to identify the type of flash memory installed in the system. The
first method is called the Common Flash Interface (CFI). The second method called Autoselect, which
is now referred to as Device Identification (ID).
Device Identification (ID), a command is used to enable a Memory Map Overlay where up to 16 word
locations can be read to get JEDEC manufacturer identification (ID), device ID, and some
configuration and protection status information from the flash memory.
Publication Release Date: Jul 02, 2014
Revision C
17