UPD78217A 查看數據表（PDF） - NEC => Renesas Technology

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UPD78217A

8-BIT SINGLE-CHIP MICROCONTROLLER

NEC => Renesas Technology 

µPD78217A, 78218A

2. PIN FUNCTIONS

2.1 PORTS

Pin Name

I/O

Alternate

Function

Function

P00 to P07

P20

P21

P22

P23

P24

P25

P26

P27

P30

P31

P32

P33

P34 to P37

P40 to

P47Note

P50 to

P57Note

P60 to P63

P64Note

P65Note

P66

P67

P70 to P75

Output

Input

Input/

output

Input/

output

NMI

INTP0

INTP1

INTP2/CI

INTP3

INTP4/ASCK

INTP5

SI

RxD

TxD

SCK

SO/SB0

TO0 to TO3

AD0 to AD7

Input/

output

A8 to A15

Output

Input/

output

Input

A16 to A19

RD

WR

WAIT/AN6

REFRQ/AN7

AN0 to AN5

Port 0 (P0):

Established as a real-time output port (4 bits × 2)

Direct drive of transistors capability

Port 2 (P2):

P20 cannot be used as a general-purpose port. (Non-maskable interrupt)

However, the input level can be confirmed in the interrupt routine.

The connection of the on-chip pull-up resistor can be specified as a 6-bit unit for P22

to P27 by software.

Port 3 (P3):

The input/output specifiable bit-wise.

Input mode pins specifiable for on-chip pull-up resistor connection as a batch by

software.

Port 4 (P4):

The input/output specifiable as an 8-bit batch.

The connection of the on-chip pull-up resistor specifiable as an 8-bit batch by

software.

LED direct drive capability.

Port 5 (P5):

The input/output specifiable bit-wise.

Input mode pins specifiable for on-chip pull-up resistor connection as a batch by

software.

LED direct drive capability.

Port 6 (P6):

P64 to P67 enables to specify the input/output bit-wise.

The connection of the on-chip pull-up resistor to input mode pins can be specified

as a batch for P64 to P67 by software.

Port 7 (P7)

Note In case of the µPD78217A, these cannot be used as ports.

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