UVEPROM

UVEPROM

UVEPROM

UVEPROM

UVEPROM

AS27C256

AS27C256

Rev. 2.0 7/06

Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.

5

Austin Semiconductor, Inc.

FIGURE 1. FLASHRITE PULSE PROGRAMMING FLOWCHART

Start

Address = First Location

VCC=6.25V, VPP=12.75V

X = 0

Program One 100us Pulse

Increment X

Programming

Section

X = 25 ?

YES

NO

Program

FAIL

Verify

Byte?

Pass

Last

Increment Address

NO

Address?

Yes

VCC = VPP = 5.25V

Read

READ

Verify

Verify

FAIL

Device Failed

Section

Bytes?

Pass

Device Passed