UPD78054 datasheet(8/42 Pages) NEC

Part #	UPD78054

Description	8-BIT SINGLE-CHIP MICROCONTROLLER

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Manufacturer	NEC [NEC]

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

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8 / 42 page

8

µPD780016Y, 780018Y

2. BLOCK DIAGRAM

Remark

The internal ROM capacity depends on the product.

A8/P50_

A15/P57

RD/P64

WR/P65

WAIT/P66

ASTB/P67

Port 0

External

access

RAM

16-bit timer/

event counter

8-bit timer/

event

counter 1

8-bit timer/

event

counter 2

Watch timer

TO0/P30

Clock output

control

System

control

78K/0

CPU Core

A/D

converter

Interrupt

control

Serial

interface 1

Port 1

Port 2

Port 3

Port 4

Port 5

Port 6

Port 11

Port 15

8-bit timer/

event

counter 5

8-bit timer/

event

counter 6

TI00/INTP0/P00

TI01/INTP1/P01

TO1/P31

TI1/P33

TO2/P32

TI2/P34

TI5/TO5/P100

TI6/TO6/P101

SI1/P20

SO1/P21

SCK1/P22

STB/P23

BUSY/P24

ANI0/P10_

ANI7/P17

AVSS

AVREF

INTP0/P00_

INTP6/P06

BUZ/P36

PCL/P35

Buzzer output

Port 8

Port 9

Port 10

P01_P06

P10_P17

P20_P27

P30_P37

P40_P47

P50_P57

P60_P67

P80_P87

P90_P95

P100_P103

P110_P117

P150_P156

AD0/P40_

AD7/P47

A0/P80_

A7/P87

RESET

X1

X2

XT1

XT2

ROM

VDD0,

VDD1

VSS0,

VSS1

IC

P00

Serial

interface 4

SI4A/P90

SO4A/P91

SCK4A/P92

SI4B/P93

SO4B/P94

SCK4B/P95

SI4C/P110

SO4C/P111

SCK4C/P112

Watchdog timer

Serial

interface 5

SDA/P116

SCL/P117

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UPD78054 Datasheet(PDF) 8 Page - NEC

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