AM29F010-120DWC 查看數據表（PDF） - Advanced Micro Devices

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AM29F010-120DWC

1 megabit (128 K x 8-Bit) CMOS 5.0 volt-only, uniform sector flash memory

Advanced Micro Devices 

PRELIMINARY

Table 4. Am29F010B 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)

Reset (Note 6)

1 XXXX F0

3 555 AA 2AA 55 555 F0

Autoselect

(Note 7)

Program

Manufacturer ID

4 555 AA 2AA 55 555 90 X00 01

Device ID

4 555 AA 2AA 55 555 90 X01 20

Sector Protect Verify

(Note 8)

4

555

AA

2AA

55

555

90

(SA)

X02

00

01

4 555 AA 2AA 55 555 A0 PA PD

Chip Erase

Sector Erase

6 555 AA 2AA 55 555 80 555 AA 2AA 55 555 10

6 555 AA 2AA 55 555 80 555 AA 2AA 55 SA 30

Erase Suspend (Note 9)

1 XXX B0

Erase Resume (Note 10)

1 XXX 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 device accepts the three-cycle reset command

sequence for backward compatibility.

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

read operation.

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

protected sector. See “Autoselect Command Sequence” for

more information.

9. The system may read 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.

10. The Erase Resume command is valid only during the Erase

Suspend mode.

14

Am29F010B

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