S29AS016J datasheet(37/60 Pages) SPANSION

37 / 60 page

February 1, 2012 S29AS016J_00_11

S29AS016J

Data

She e t

Table 11.2 S29AS016J Command Definitions (Byte Mode)

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 6)

1RA

Reset (Note 7)

XXX

Manufacturer ID

AAA

555

AAA

X00

Device ID,

Top Boot Block

AAA

555

AAA

X02

X1C

X1E

Device ID,

Bottom Boot Block

AAA

555

AAA

X02

X1C

X1E

Secured Silicon Sector Factory

Protect, Top Boot (Note 9)

AAA

555

AAA

X06

89/09

Secured Silicon Sector Factory

Protect, Bottom Boot (Note 9)

AAA

555

AAA

X06

91/11

Sector Group Protect Verify

(Note 10)

AAA

555

AAA

(SA)X04

00/01

Enter Secured Silicon Sector

AAA

555

AAA

Exit Secured Silicon Sector

AAA

555

AAA

XXX

CFI Query (Note 11)

1AA

Program

AAA

555

AAA

Unlock Bypass

AAA

555

AAA

Unlock Bypass Program (Note 12)

XXX

Unlock Bypass Reset (Note 13)

XXX

Chip Erase

AAA

555

AAA

555

AAA

Sector Erase

AAA

555

AAA

555

Erase Suspend (Note 14)

XXX

Erase Resume (Note 15)

XXX

Legend

X = Don’t care

RA = Address of the memory location to be read.

RD = Data read from location RA during read operation.

PA = Address of the memory location to be programmed. Addresses latch on the

falling edge of the WE# or CE# pulse, whichever happens later.

PD = Data to be programmed at location PA. Data latches on the rising edge of

WE# or CE# pulse, whichever happens first.

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

bits A19–A12 uniquely select any sector.

Notes

1. See Table 7.1 on page 15 for description of bus operations.

2. All values are in hexadecimal.

3. Except for the read cycle and the fourth cycle of the autoselect command

sequence, all bus cycles are write cycles.

4. Data bits DQ15–DQ8 are don’t cares for unlock and command cycles.

5. Address bits A19–A11 are don’t cares for unlock and command cycles,

unless SA or PA required.

6. No unlock or command cycles required when reading array data.

7. The Reset command is required to return to reading array data when device

is in the autoselect mode, or if DQ5 goes high (while the device is providing

status data).

8. The fourth cycle of the autoselect command sequence is a read cycle.

9. For top boot, 89h = factory locked, 09h = not factory locked. For bottom boot,

91h = factory locked, 11h = not factory locked.

10. The data is 00h for an unprotected sector and 01h for a protected sector. See

“Autoselect Command Sequence” for more information.

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

in autoselect mode.

12. The Unlock Bypass command is required prior to the Unlock Bypass Program

command.

13. The Unlock Bypass Reset command is required to return to reading array

data when the device is in the unlock bypass mode. F0 is also acceptable.

14. The system may read and program in non-erasing sectors, or enter the

autoselect mode, when in the Erase Suspend mode. The Erase Suspend

command is valid only during a sector erase operation.

15. The Erase Resume command is valid only during the Erase Suspend mode.

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