S70GL01GN00 Datasheet, PDF (39/83 Pages) SPANSION – 3.0 Volt-only Page Mode Flash Memory featuring 110 nm MirrorBit™ Process Technology

Advance Information
Logical Inhibit
Write cycles are inhibited by holding any one of OE# = V_IL, CE# or CE2# = V_IH
or WE# = V_IH. To initiate a write cycle, CE# or CE2# and WE# must be a logical
zero while OE# is a logical one.
Power-Up Write Inhibit
If WE# = CE# (or CE2#) = V_IL and OE# = V_IH during power up, the device does
not accept commands on the rising edge of WE#. The internal state machine is
automatically reset to the read mode on power-up.
Common Flash Memory Interface (CFI)
The Common Flash Interface (CFI) specification outlines device and host system
software interrogation handshake, which allows specific vendor-specified soft-
ware algorithms to be used for entire families of devices. Software support can
then be device-independent, JEDEC ID-independent, and forward- and back-
ward-compatible for the specified flash device families. Flash vendors can
standardize their 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, any time the device is ready to read array data.
The system can read CFI information at the addresses given in Table 6, Table 7
on page 38, and Table 8 on page 38. 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 au-
toselect mode. The device enters the CFI query mode, and the system can read
CFI data at the addresses given in Table 6, Table 7 on page 38, Table 8 on
page 38, and Table 9 on page 39. The system must write the reset command to
return the device to reading array data.
For further information, please refer to the CFI Specification and CFI Publication
100, available via the World Wide Web at http://www.amd.com/flash/cfi. Alter-
natively, contact your sales representative for copies of these documents.
Addresses
(x16)
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
1Ah
Addresses
(x8)
20h
22h
24h
26h
28h
2Ah
2Ch
2Eh
30h
32h
34h
Table 6. CFI Query Identification String
Data
0051h
0052h
0059h
0002h
0000h
0040h
0000h
0000h
0000h
0000h
0000h
Description
Query Unique ASCII string “QRY”
Primary OEM Command Set
Address for Primary Extended Table
Alternate OEM Command Set (00h = none exists)
Address for Alternate OEM Extended Table (00h = none exists)
June 1, 2005 S70GL01GN00_00_A1
S70GL01GN00 MirrorBit^TM Flash
37