S29GL032A datasheet(61/95 Pages) SPANSION

61 / 95 page

September 10, 2007 S29GL-A_00_A11

S29GL-A

Data

She e t

10.2

Command Definitions

Figure 10.2 Command Definitions (x16 Mode, BYTE# = VIH)

Command

Sequence

(Note 1)

Bus Cycles (Notes 2–5)

First

Second

Third

Fourth

Fifth

Sixth

Read (Note 5)

1RA

Reset (Note 6)

1XXX

Manufacturer ID

555

2AA

555

X00

0001

Device ID (Note 8)

555

2AA

555

X01

227E

X0E

(Note 19)

X0F

(Note 19)

Device ID (Note 9)

555

2AA

555

X01

(Note 18)

Secured Silicon Sector Factory Protect

555

2AA

555

X03

(Note 10)

Sector Group Protect Verify

(Note 11)

555

2AA

555

(SA)X02

00/01

Enter Secured Silicon Sector Region

555

2AA

555

Exit Secured Silicon Sector Region

555

2AA

555

XXX

Program

555

2AA

555

Write to Buffer (Note 12)

555

2AA

WBL

Program Buffer to Flash

Write to Buffer Abort Reset (Note 13)

555

2AA

555

Unlock Bypass

555

2AA

555

Unlock Bypass Program (Note 14)

XXX

Unlock Bypass Reset (Note 15)

2XXX

XXX

Chip Erase

555

2AA

555

2AA

555

Sector Erase

555

2AA

555

2AA

Program/Erase Suspend (Note 16)

1XXX

Program/Erase Resume (Note 17)

1XXX

CFI Query (Note 18)

155

Legend

X = Don’t care

RA = Read Address of memory location to be read.

RD = Read Data read from location RA during read operation.

PA = Program Address. Addresses latch on falling edge of WE# or CE# pulse,

whichever happens later.

PD = Program Data for location PA. Data latches on rising edge of WE# or CE#

pulse, whichever happens first.

SA = Sector Address of sector to be verified (in autoselect mode) or erased.

Address bits A21–A15 uniquely select any sector.

WBL = Write Buffer Location. Address must be within same write buffer page as

PA.

WC = Word Count. Number of write buffer locations to load minus 1.

Notes

1. See Table 7.1 on page 22 for description of bus operations.

2. All values are in hexadecimal.

3. Shaded cells indicate read cycles. All others are write cycles.

4. During unlock and command cycles, when lower address bits are 555 or

2AA as shown in table, address bits above A11 and data bits above DQ7 are

don’t care.

5. No unlock or command cycles required when device is in read mode.

6. Reset command is required to return to read mode (or to erase-suspend-

read mode if previously in Erase Suspend) when device is in autoselect

mode, or if DQ5 goes high while device is providing status information.

7. Fourth cycle of the autoselect command sequence is a read cycle. Data bits

DQ15–DQ8 are don’t care. Except for RD, PD and WC. See Autoselect

Command Sequence on page 53 for more information.

8. For S29GL064A and S29GL032A, Device ID must be read in three cycles.

9. For S29GL016A, Device ID must be read in one cycle.

10. Refer to Table 7.12 on page 40 for data indicating Secured Silicon Sector

factory protect status.

11. Data is 00h for an unprotected sector group and 01h for a protected sector

group.

12. Total number of cycles in command sequence is determined by number of

words written to write buffer. Maximum number of cycles in command

sequence is 21, including Program Buffer to Flash command.

13. Command sequence resets device for next command after aborted write-to-

buffer operation.

14. Unlock Bypass command is required prior to Unlock Bypass Program

command.

15. Unlock Bypass Reset command is required to return to read mode when

device is in unlock bypass mode.

16. System may read and program in non-erasing sectors, or enter autoselect

mode, when in Erase Suspend mode. Erase Suspend command is valid only

during a sector erase operation.

17. Erase Resume command is valid only during Erase Suspend mode.

18. Command is valid when device is ready to read array data or when device is

in autoselect mode.

19. Refer to Table 7.12 on page 40, for individual Device IDs per device density

and model number.

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