T80C251TB 데이터 시트보기 (PDF) - Intel

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T80C251TB

HIGH-PERFORMANCE CHMOS MICROCONTROLLER

Intel 

8xC251TB/TQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER

P1.0 / T2

1

P1.1 / T2EX

2

P1.2 / ECI / RXD1

3

P1.3 / CEX0 / TXD1

4

P1.4 / CEX1

5

P1.5 / CEX2

6

P1.6 / CEX3 / WAIT#

7

P1.7 / CEX4 / A17 / WCLK

8

RST

9

P3.0 / RXD

10

P3.1 / TXD

11

P3.2 / INT0#

12

P3.3 / INT1#

13

P3.4 / T0

14

P3.5 / T1

15

P3.6 / WR#

16

P3.7 / RD# / A16

17

XTAL2

18

XTAL1

19

VSS

20

8XC251TB

8XC251TQ

View of

component

as mounted

on PC board

40

VCC

39

AD0 / P0.0

38

AD1 / P0.1

37

AD2 / P0.2

36

AD3 / P0.3

35

AD4 / P0.4

34

AD5 / P0.5

33

AD6 / P0.6

32

AD7 / P0.7

31

EA#

30

ALE

29

PSEN#

28

A15 / P2.7

27

A14 / P2.6

26

A13 / P2.5

25

A12 / P2.4

24

A11 / P2.3

23

A10 / P2.2

22

A9 / P2.1

21

A8 / P2.0

Figure 4. 8xC251TB/TQ 40-pin PDIP Packages

B2978-01

5

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