W27C020M-90 데이터 시트보기 (PDF) - Winbond

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W27C020M-90

256K x 8 ELECTRICALLY ERASABLE EPROM

Winbond 

Preliminary W27C020M

SMART PROGRAMMING ALGORITHM

Start

Address = First Location

Vcc = 5V

Vpp = 12V

X=0

Program One 100 µS Pulse

Increment X

Fail

Increment No

Address

Yes

X = 25?

No

Verify

One Byte

Pass

Last

Address?

Yes

Vcc = 5V

Vpp = 5V

Verify

Fail

One Byte

Pass

Compare

All Bytes to

Fail

Original Data

Pass

Pass

Device

Fail

Device

- 10 -

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