S29CD032G datasheet(54/93 Pages) SPANSION

54 / 93 page

S29CD032G

30606B0 March 22, 2004

Ad va n c e

In f o rm a t i o n

A program operation while in the erase suspend mode is the same as pro-

gramming in the regular program mode, except that the data must be pro-

grammed to a sector that is not erase suspended. Write operation status is

obtained in the same manner as a normal program operation.

Sector Erase and Program Resume Command

The Sector Erase and Program Resume command (30h) resumes a Sector Erase

or Program operation that has been suspended. Any further writes of the Sector

Erase and Program Resume command ignored. However, another Sector Erase

and Program Suspend command can be written after the device has resumed

sector erase operations. Note that until a suspended program or erase operation

has resumed, the contents of that sector are unknown.

The Sector Erase and Program Resume Command is ignored if the SecSi sector

is enabled.

Configuration Register Read Command

The Configuration Register Read command is used to verify the contents of the

Configuration Register. Execution of this command is only allowed while in user

mode and is not available during Unlock Bypass mode or during Security mode.

The Configuration Register Read command is preceded by the standard two-cycle

“unlock” sequence, followed by the Configuration Register Read command (C6h),

and finally followed by performing a read operation to the bank address specified

when the C6h command was written. Reading the other bank results in reading

the flash memory contents. The contents of the Configuration Register are place

on DQ15–DQ0. Contents of DQ31–DQ16 are XXXXh and should be ignored. The

user should execute the Read/Reset command to place the device back in stan-

dard user operation after executing the Configuration Register Read command.

The Configuration Register Read Command is fully operational if the SecSi sector

is enabled.

Configuration Register Write Command

The Configuration Register Write command is used to modify the contents of the

Configuration Register. Execution of this command is only allowed while in user

mode and is not available during Unlock Bypass mode or during Security mode.

The Configuration Register Write command is preceded by the standard two-cycle

“unlock” sequence, followed by the Configuration Register Write command (D0h),

and finally followed by writing the contents of the Configuration Register to any

address. The contents of the Configuration Register are placed on DQ31–DQ0.

The contents of DQ31–DQ16 are XXXXh and are ignored. Writing the Configura-

tion Register while an Embedded Algorithm™ or Erase Suspend modes are

executing results in the contents of the Configuration Register not being updated.

The Configuration Register Read Command is fully operational if the SecSi sector

is enabled.

Common Flash Interface (CFI) Command

The Common Flash Interface (CFI) command provides device size, geometry, and

capability information directly to the users system. Flash devices that support

CFI, have a “Query Command” that returns information about the device to the

system. The Query structure contents are read at the specific address locations

following a single system write cycle where:

S29CD032G Datasheet(PDF) 54 Page - SPANSION

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