29F010 Ver la hoja de datos (PDF) - Advanced Micro Devices

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29F010

1 Megabit (128 K x 8-bit) CMOS 5.0 Volt-only, Uniform Sector Flash Memory

Advanced Micro Devices 

Table 4. Am2F010 Command Definitions

Command

Sequence

(Note 1)

Read (Note 4)

Bus Cycles (Notes 2-3)

First

Second

Third

Fourth

Fifth

Sixth

Addr Data Addr Data Addr Data Addr Data Addr Data Addr Data

1 RA RD

Reset (Note 5)

Manufacturer ID

1 XXXX F0

4 5555 AA 2AAA 55 5555 90 XX00 01

Autoselect

(Note 6)

Device ID

4 5555 AA 2AAA 55 5555 90 XX01 20

Sector Protect Verify

(Note 7)

4

5555

AA 2AAA

55

5555

90

(SA)

X02

00

01

Program

Chip Erase

4 5555 AA 2AAA 55 5555 A0 PA PD

6 5555 AA 2AAA 55 5555 80 5555 AA 2AAA 55 5555 10

Sector Erase

6 5555 AA 2AAA 55 5555 80 5555 AA 2AAA 55 SA 30

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.

Am29F010

13

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