UPD78P014 datasheet(14/62 Pages) NEC

14 / 62 page

µPD78P014

P00/TI0

P01

P02

P03

P25/SB0

P20

P26/SB1

P21

P25/SI0

P26/SO0

P27

P22

P23

P24

P00/INTP0

P33

P34

P30

P31

P32

P35

P36

P40 to P47

P50 to P57

P64

P65

P66

P67

(2)

Non port pins (1/2)

Altrnate

Function

Pin Name

I/O

Falling edge detection external interrupt input.

After Reset

Input

Output

Serial interface automatic transmission/reception strobe output.

Input

Serial interface automatic transmission/reception busy input.

INTP0

INTP1

INTP2

INTP3

SI0

SI1

SO0

SO1

SB0

SB1

SCK0

SCK1

STB

BUSY

TI0

TI1

TI2

TO0

TO1

TO2

PCL

BUZ

AD0 to AD7

A8 to A15

WAIT

ASTB

Clock output (for trimming main system clock or subsystem clock).

Buzzer output.

Low address/data bus when memory is expanded externally.

High address bus when memory is expanded externally.

External memory read operation strobe signal output.

External memory write operation strobe signal output.

Wait insertion at external memory access.

Output of strobe which externally latches address information to be

output to ports 4 and 5 when accessing external memory.

Input

Output

Input

Output

Input

External interrupt input with specifiable valid edge (rising edge, falling

edge, or both rising and falling edges).

Input

Serial interface serial data input.

Input

Output

Serial interface serial data output.

Input

Serial interface serial data input/output.

Input/

output

Serial interface serial clock input/output.

Input/

output

Input of external count clock to 16-bit timer (TM0).

Input of external count clock to 8-bit timer (TM1).

Input of external count clock to 8-bit timer (TM2).

16-bit timer (TM0) output (alternate function with 14-bit PWM output).

8-bit timer (TM1) output.

8-bit timer (TM2) output.

Input

Output

Input/

output

Input

Output

Input

Output

UPD78P014 Datasheet(PDF) 14 Page - NEC

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