s29cd-j Meet Spansion Inc., s29cd-j Datasheet - Page 69

• Manufacturer Part Number: s29cd-j
• Description: 32/16 Megabit Cmos 2.6 Volt Or 3.3 Volt-only Simultaneous Read/write, Dual Boot, Burst Mode Flash Memory With Versatilei/o?
• Manufacturer: Meet Spansion Inc.

19. Appendix 1
19.1
March 7, 2007 S29CD-J_CL-J_00_B2
Common Flash Memory Interface (CFI)
The Common Flash Interface (CFI) specification outlines device and host system software interrogation
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-independent, and forward- and
backward-compatible for the specified flash device families. Flash vendors can standardize 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 in word mode (or address AAh in byte mode), any time the device is ready to read array data. The system
can read CFI information at the addresses given in
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
19.3. The system must write the reset command to return the device to the autoselect mode.
For further information, please refer to the CFI Specification and CFI Publication 100. Contact a Spansion
representative for copies of these documents.
Addresses
Addresses
1Bh
1Ch
1Dh
1Eh
1Fh
20h
21h
22h
23h
24h
25h
26h
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
1Ah
D a t a
(see description)
(see description)
S h e e t
0000h
0000h
0004h
0000h
0009h
0000h
0005h
0000h
0007h
0000h
Data
S29CD-J & S29CL-J Flash Family
0051h
0052h
0059h
0002h
0000h
0040h
0000h
0000h
0000h
0000h
0000h
Table 19.1 CFI Query Identification String
Data
( P r e l i m i n a r y )
Table 19.2 CFI System Interface String
V
DQ7–DQ4: volts, DQ3–DQ0: 100 millivolt
0025h = S29CD-J devices
0030h = S29CL-J devices
V
DQ7–DQ4: volts, DQ3–DQ0: 100 millivolt
0027h = S29CD-J devices
0036h = S29CL-J devices
V
V
Typical timeout per single word/doubleword program 2
Typical timeout for Min. size buffer program 2
Typical timeout per individual block erase 2
Typical timeout for full chip erase 2
Max. timeout for word/doubleword program 2
Max. timeout for buffer write 2
Max. timeout per individual block erase 2
Max. timeout for full chip erase 2
CC
CC
PP
PP
Min. voltage (00h = no V
Max. voltage (00h = no V
Min. (write/erase)
Max. (write/erase)
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)
Table 19.1-Table
PP
PP
N
times typical
pin present)
N
pin present)
Description
times typical (00h = not supported)
N
19.3. In order to terminate reading CFI
ms (00h = not supported)
Description
N
times typical
N
ms
N
N
times typical
µs (00h = not supported)
N
µs
Table 19.1-Table
69