AM28F010 datasheet(20/35 Pages) AMD

Part #	AM28F010

Description	1 Megabit (128 K x 8-Bit) CMOS 12.0 Volt, Bulk Erase Flash Memory

PDF	35 Pages

Scroll/Zoom	100%

Manufacturer	AMD [Advanced Micro Devices]

Direct Link	http://www.amd.com

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20 / 35 page

Am28F010

Auto Select Command

AMD’s Flash memories are designed for use in applica-

tions where the local CPU alters memory contents. Ac-

cordingly, manufacturer and device codes must be

accessible while the device resides in the target sys-

tem. PROM programmers typically access the signa-

ture codes by raising A9 to a high voltage. However,

multiplexing high voltage onto address lines is not a

generally desired system design practice.

The device contains an Auto Select operation to sup-

plement traditional PROM programming methodology.

The operation is initiated by writing 80h or 90h into the

command register. Following this command, a read

cycle address 0000h retrieves the manufacturer code

of 01h. A read cycle from address 0001h returns the

device code. To terminate the operation, it is necessary

to write another valid command, such as Reset (FFh),

into the register.

AM28F010 Datasheet(PDF) 20 Page - Advanced Micro Devices