s71ws256jc0 Meet Spansion Inc., s71ws256jc0 Datasheet - Page 48

• Manufacturer Part Number: s71ws256jc0
• Description: Stacked Multi-chip Product Mcp 128/64 Megabit 8m/4m X 16-bit Cmos 1.8 Volt-only, Simultaneous Read/write, Burst Mode Flash Memory With Cellularram
• Manufacturer: Meet Spansion Inc.

13 Common Flash Memory Interface (CFI)
46
Addresses
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
1Ah
The Common Flash Interface (CFI) specification outlines device and host system software inter-
rogation 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-indepen-
dent, and forward- and backward-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 Tables 13.1-13.4. 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 Tables 13.1-13.4. The system must write the reset command to return the device to the au-
toselect mode.
0051h
0052h
0059h
0002h
0000h
0040h
0000h
0000h
0000h
0000h
0000h
Data
Table 13.1 CFI Query Identification String
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)
S29WS128J/064J
D a t a
S h e e t
Description
S29WS-J_M0_A4 June 24, 2005