AM29LV160M datasheet(34/63 Pages) AMD

34 / 63 page

Am29LV160M

25974B5 January 31, 2007

Data

Sheet

Table 11. Command Definitions (x8 Mode, BYTE# = VIL)

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 A19–A15 uniquely select any sector.

Command

Sequence

(Note 1)

Bus Cycles (Notes 2–5)

First

Second

Third

Fourth

Fifth

Sixth

Addr Data

Addr

Data

Addr

Data

Addr

Data

Addr

Data Addr Data

Read (Note 5)

Reset (Note 6)

XXX

Manufacturer ID

AAA

555

AAA

X00

Device ID, Top Boot (Note 8)

AAA

555

AAA

X02

Device ID, Bottom Boot (Note

AAA

555

AAA

X02

Secured Silicon Sector Factory

Protect

(Note 15)

AAA

555

AAA

X06

83/03

Sector Group Protect Verify

(Note 9)

AAA

555

AAA

(SA)X04

00/01

Enter Secured Silicon Sector Region

AAA

555

AAA

Exit Secured Silicon Sector Region

AAA

555

AAA

XXX

Program

AAA

555

AAA

Unlock Bypass

AAA

555

AAA

Unlock Bypass Program (Note 10)

XXX

Unlock Bypass Reset (Note 11)

XXX

Chip Erase

AAA

555

AAA

555

AAA

Sector Erase

AAA

555

AAA

555

Program/Erase Suspend (Note 12)

XXX

Program/Erase Resume (Note 13)

XXX

CFI Query (Note 14)

Notes:

1. See Table 1, on page 10 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 AAA as shown in table, address bits above

A11 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 autoselect command sequence is a read

cycle. Data bits DQ15–DQ8 are don’t care. See

“Autoselect Command Sequence” on page 24 for more

information.

8. Device ID must be read in three cycles.

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

protected sector group.

10. Unlock Bypass command is required prior to Unlock

Bypass Program command.

11. Unlock Bypass Reset command is required to return to

read mode when device is in unlock bypass mode.

12. 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.

13. Erase Resume command is valid only during Erase

Suspend mode.

14. Command is valid when device is ready to read array data

or when device is in autoselect mode.

15. Data is 83h for factory locked and 03h for not factory

locked.

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