UPD75P4308 datasheet(4/60 Pages) NEC

Part #	UPD75P4308

Description	4-BIT SINGLE-CHIP MICROCONTROLLER

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Manufacturer	NEC [NEC]

Direct Link	http://www.nec.com/

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µPD75P4308

4

1. PIN CONFIGURATION (Top View)

•

36-pin plastic shrink SOP (300 mil, 0.8 mm pitch)

µPD75P4308GS

Vss

1

36

X1

2

P51/D5

35

RESET

3

P52/D6

34

4

P53/D7

33

5

P60/KR0/D0

32

P33/MD3

6

31

P32/MD2

7

30

P31/MD1

8

29

P30/MD0

9

28

P81

10

27

P80

11

P61/KR1/D1

26

P22/PCL

12

P62/KR2/D2

25

P21/PTO1

13

P63/KR3/D3

24

P20/PTO0

14

P70/KR4

23

P03/SI

15

P71/KR5

22

P02/SO/SB0

16

P72/KR6

21

P01/SCK

17

P73/KR7

20

P00/INT4

18

P13/TI0/TI1

19

X2

P23

P50/D4

P12/INT2

P11/INT1

P10/INT0

VDD

VPP

Note

Note Connect VPP directly to VDD during normal operations.

PIN IDENTIFICATIONS

P00 to P03

: Port0

SI

: Serial Input

P10 to P13

: Port1

SO

: Serial Output

P20 to P23

: Port2

SB0

: Serial Bus 0

P30 to P33

: Port3

RESET

: Reset

P50 to P53

: Port5

TI0, 1

: Timer Input 0, 1

P60 to P63

: Port6

PTO0, 1

: Programmable Timer Output 0, 1

P70 to P73

: Port7

PCL

: Programmable Clock

P80, P81

: Port8

INT0, 1, 4

: External Vectored Interrupt 0, 1, 4

KR0 to KR7

: Key Return 0 to 7

INT2

: External Test Input 2

VDD

: Positive Power Supply

X1, 2

: System Clock Oscillation 1, 2

VSS

: GND

MD0 to 3

: Mode Selection 0 to 3

VPP

: Programming Power Supply

D0 to D7

: Data Bus 0 to 7

SCK

: Serial Clock

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