AM29F010 datasheet(13/31 Pages) AMD

13 / 31 page

Am29F010

Table 4.

Am2F010 Command Definitions

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 A16–A14 uniquely select any sector.

Notes:

1. See Table 1 for description of bus operations.

2. All values are in hexadecimal.

3. Except when reading array or autoselect data, all command

bus cycles are write operations.

4. No unlock or command cycles required when reading array

data.

5. 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).

6. The fourth cycle of the autoselect command sequence is a

read operation.

7. The data is 00h for an unprotected sector and 01h for a

protected sector. See “Autoselect Command Sequence” for

more information.

Command

Sequence

(Note 1)

Bus Cycles (Notes 2-3)

First

Second

Third

Fourth

Fifth

Sixth

Addr

Data

Addr

Data

Addr

Data

Addr

Data

Addr Data

Addr

Data

Read (Note 4)

Reset (Note 5)

XXXX

Autoselect

(Note 6)

Manufacturer ID

5555

2AAA

5555

XX00

Device ID

5555

2AAA

5555

XX01

Sector Protect Verify

(Note 7)

5555

2AAA

5555

(SA)

X02

Program

5555

2AAA

5555

Chip Erase

5555

2AAA

5555

2AAA

5555

Sector Erase

5555

2AAA

5555

2AAA

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