S29CD032G datasheet(55/93 Pages) SPANSION

55 / 93 page

March 22, 2004 30606B0

S29CD032G

Ad va nc e

In forma t i o n

A 98h query command code is written to 55h address location within the de-

vice’s address space

The device is initially in any valid read state, such as “Read Array” or “Read

ID Data”

Other device statistics may exist within a long sequence of commands or data in-

put; such sequences must first be completed or terminated before writing of the

98H Query command, otherwise invalid Query data structure output may result.

Note that for data bus bits greater than DQ7 (DQ31–DQ8), the valid Query access

code has all zeroes (“0”s) in the upper DQ bus locations. Thus, the 16-bit Query

command code is 0098h and the 32-bit Query command code is 00000098h.

To terminate the CFI operation, it is necessary to execute the Read/Reset

command.

The CFI command is not permitted if the SecSi sector is enabled and Simulta-

neous Read/Write operation is disabled once the command is entered.

See Common Flash Memory Interface (CFI) for the specific CFI command codes.

SecSi Sector Entry Command

The SecSi Sector Entry command enables the SecSi (OTP) sector to overlay the

8 KB outermost sector in the small (25%) bank. The SecSi sector overlays

00000h–0003Fh for the top bootblock configuration and FFF70h–FFFFFh for the

bottom bootblock configuration. Address range 00040h–007FFh for the top boot-

block and FF00h–FFF7Fh return invalid data when addressed with the SecSi

sector enabled. The following commands are permitted after issuing the SecSi

Sector Entry command:

Autoselect

Password Program

Password Verify

Password Unlock

Read/Reset

Program

Chip and Sector Erase

SecSi Sector Protection Bit Program

PPB Program

10.

All PPB Erase

11.

PPB Lock Bit Set

12.

DYB Write

13.

DYB/PPB/PPB Lock Bit Verify

14.

Security Reset

15.

Configuration Register Write

16.

Configuration Register Read

The following commands are unavailable when the SecSi sector is enabled. Issu-

ing the following commands while the SecSi sector is enabled results in the

command being ignored.

Unlock Bypass

CFI

Accelerated Program

Program and Sector Erase Suspend

Program and Sector Erase Resume

S29CD032G Datasheet(PDF) 55 Page - SPANSION

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