M27C256B-20C1 查看數據表（PDF） - STMicroelectronics

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M27C256B-20C1

256 Kbit (32Kb × 8) UV EPROM and OTP EPROM

STMicroelectronics 

Summary description

M27C256B

Table 1. Signal names

A0-A14

Address Inputs

Q0-Q7

Data Outputs

E

Chip Enable

G

Output Enable

VPP

Program Supply

VCC

Supply Voltage

VSS

Ground

NC

Not Connected Internally

DU

t(s) Figure 2. DIP connections

Don’t Use

uc VPP

d A12

ro A7

P A6

te A5

le A4

o A3

s A2

b A1

O A0

) -Q0

t(s Q1

Q2

Obsolete Produc VSS

1

28

2

27

3

26

4

25

5

24

6

23

7

22

M27C256B

8

21

9

20

10

19

11

18

12

17

13

16

14

15

VCC

A14

A13

A8

A9

A11

G

A10

E

Q7

Q6

Q5

Q4

Q3

AI00756

6/24

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