AS27C256-20ECAM/Q 参数 Datasheet PDF下载

UVEPROM

Austin Semiconductor, Inc.

SMJ27C256

AS27C256

FIGURE 1. SNAP! PULSE PROGRAMMING FLOW CHART

START

Address = First Location

V

CC

= 6.5V, V

PP

= 13V

Program One Pulse = t

W

= 100µs

Increment Address

Program

Mode

Last

Address?

No

Yes

Address = First Location

X=0

Program One Pulse = t

W(E)PR

= 100µs

No

Verify

Byte

Increment

Address

Fail

X = X+1

X = 10?

Pass

Last

Address?

Interactive

Mode

No

Yes

V

CC

= V

PP

= 5V ± 10%

Yes

Device Failed

Compare

All Bytes

to Original

Data

Fail

Final

Verification

Pass

Device Passed

SMJ27C256/AS27C256

Rev. 2.5 10/03

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

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