AM29F200 datasheet(15/39 Pages) AMD

No. de pieza	AM29F200

Descripción Electrónicos	2 Megabit (256 K x 8-Bit/128 K x 16-Bit) CMOS 5.0 Volt-only, Boot Sector Flash Memory

PDF	39 Pages

Scroll/Zoom	100%

Fabricante Electrónico	AMD [Advanced Micro Devices]

Página de inicio	http://www.amd.com

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15 / 39 page

Am29F200B

mode. The device allows reading autoselect codes

even at addresses within erasing sectors, since the

codes are not stored in the memory array. When the

device exits the autoselect mode, the device reverts to

the Erase Suspend mode, and is ready for another

valid operation. See “Autoselect Command Sequence”

for more information.

The system must write the Erase Resume command

(address bits are “don’t care”) to exit the erase suspend

mode and continue the sector erase operation. Further

writes of the Resume command are ignored. Another

Erase Suspend command can be written after the

device has resumed erasing.

Notes:

1. See the appropriate Command Definitions table for erase

command sequence.

2. See “DQ3: Sector Erase Timer” for more information.

Figure 3.

Erase Operation

START

Write Erase

Command Sequence

Data Poll

from System

Data = FFh?

Yes

Erasure Completed

Embedded

Erase

algorithm

in progress

21526B-7

AM29F200 Datasheet(PDF) 15 Page - Advanced Micro Devices