UPD754144 데이터 시트보기 (PDF) - NEC => Renesas Technology

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UPD754144

4-BIT SINGLE-CHIP MICROCONTROLLERS

NEC => Renesas Technology 

µPD754144, 754244

• µPD754244

• 20-pin Plastic SOP (300 mil, 1.27-mm pitch)

µPD754244GS-×××-BA5

• 20-pin Plastic Shrink SOP (300 mil, 0.65-mm pitch)

µPD754244GS-×××-GJG

RESET

1

X1

2

X2

3

VSS

4

IC

5

VDD

6

P60/AVREF

7

P61/INT0

8

P62/PTH00

9

P63/PTH01

10

20

KRREN

19

P80

18

P30/PTO0

17

P31/PTO1

16

P32/PTO2

15

P33

14

P70/KR4

13

P71/KR5

12

P72/KR6

11

P73/KR7

Pin Identification

IC: Internally Connected (Connect to VDD directly)

AVREF

CL1 and CL2

IC

INT0

KR4 to KR7

KRREN

P30 to P33

P60 to P63

: Analog reference

: System clock (RC)

: Internally connected

: External vectored interrupt 0

: Key returns 4 to 7

: Key return reset enable

: Port 3

: Port 6

P70 to P73

: Port 7

P80

: Port 8

PTH00 and PTH01 : Programmable threshold port analog inputs 0 and 1

PTO0 to PTO2

: Programmable timer outputs 0 to 2

RESET

: Reset

VDD

: Positive power supply

VSS

: Ground

X1 and X2

: System clock (crystal/ceramic)

7

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