UPD784938 Datasheet, PDF(53/733 Page) NEC – 16-Bit Single-Chip Microcontrollers

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UPD784938 Datasheet, PDF (53/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

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CHAPTER 2 PIN FUNCTIONS

(2) Non-port pins (1/2)

Pin Name

TO0/TO3

CI

RxD

RxD2

TxD

TxD2

ASCK

ASCK2

SI0

SI1

SI2

SI3

SO0

SO1

SO2

SO3

SCK0

SCK1

SCK2

SCK3

NMI

INTP0

INTP1

INTP2

INTP3

INTP4

INTP5

AD0 to AD7

A8 to A15

A16 to A19

RD

WR

WAIT

REFRQ

HLDRQ

HLDAK

Input/Output

Output

Input

Input

Output

Input

Input

Output

Input/output

Input

Input/output

Output

Output

Output

Output

Input

Output

Input

Output

Alternate Function

P34 to P37

P23/INTP2

P30/SI1

P13/SI2

P31/SO1

P14/SO2

P25/INTP4/SCK1

P12/SCK2

P27

P30/RxD

P13/RxD2

P106

P33

P31/TxD

P14/TxD2

P107

P32

P25/INTP4/ASCK

P12/ASCK2

P105

P20

P21

P22

P23/CI

P24

P25/ASCK0/SCK1

P26

P40 to P47

P50 to P57

P60 to P63

P64

P65

P66/HLDRQ

P67/HLDAK

P66/WAIT

P67/REFRQ

Function

Timer output

Count clock input to timer/event counter 2

Serial data input (UART0)

Serial data input (UART2)

Serial data output (UART0)

Serial data output (UART2)

Baud rate clock input (UART0)

Baud rate clock input (UART2)

Serial data input (3-wire serial I/O0)

Serial data input (3-wire serial I/O1)

Serial data input (3-wire serial I/O2)

Serial data input (3-wire serial I/O3)

Serial data output (3-wire serial I/O0)

Serial data output (3-wire serial I/O1)

Serial data output (3-wire serial I/O2)

Serial data output (3-wire serial I/O3)

Serial clock input/output (3-wire serial I/O0)

Serial clock input/output (3-wire serial I/O1)

Serial clock input/output (3-wire serial I/O2)

Serial clock input/output (3-wire serial I/O3)

External interrupt requests

â

â¢ Count clock input to timer/event counter 1

â¢ CR11 or CR12 capture trigger signal

â¢ Count clock input to timer/event counter 2

â¢ CR22 capture trigger signal

â¢ Count clock input to timer/event counter 2

â¢ CR21 capture trigger signal

â¢ Count clock input to timer/event counter 0

â¢ CR02 capture trigger signal

â

A/D converter conversion start trigger input

Time division address/data bus (external memory connection)

Upper address bus (external memory connection)

Upper address with address extension (external memory connection)

External memory read strobe

External memory write strobe

Wait insertion

External pseudo-static memory refresh pulse output

Bus hold request input

Bus hold response output

Preliminary Userâs Manual U13987EJ1V0UM00

53

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