7

μPD78F8056, 78F8057, 78F8058

Preliminary Product Information U19858EJ1V0PM

7. PORT

(1)

Port functions

Function Name

I/O

Function

After Reset

Alternate Function

P02

SO10/TxD1

P03

SI10/RxD1/SDA10

P04

I/O

Port 0.

3-bit I/O port

Output of P02 to P04 can be set to N-ch open-drain output

Input/output can be specified in 1-bit units.

Use of an on-chip pull-up resistor can be specified by a software

setting.

Input port

SCK10/SCL10

P13

TxD3

P14

RxD3

P15

RTCDIV/RTCCL/

GPIO2

P16

I/O

Port 1.

4-bit I/O port.

Input/output can be specified in 1-bit units.

Use of an on-chip pull-up resistor can be specified by a software

setting.

Input port

TI01/TO01/INTP5/

GPIO3

P31

I/O

Port 3.

1-bit I/O port.

Input/output can be specified in 1-bit units.

Use of an on-chip pull-up resistor can be specified by a software

setting.

Input port

TI03/TO03/INTP4

P40

Note

TOOL0

P41

I/O

Port 4.

2-bit I/O port.

Input/output can be specified in 1-bit units.

Use of an on-chip pull-up resistor can be specified by a software

setting.

Input port

TOOL1

P76

I/O

Port 7.

1-bit I/O port.

Input/output can be specified in 1-bit units.

Use of an on-chip pull-up resistor can be specified by a software

setting.

Input port

INTP10

P120

I/O

INTP0/EXLVI

P121

X1

P122

X2/EXCLK

P123

XT1

P124

Input

Port 12.

1-bit I/O port and 4-bit input port.

For only P120, use of an on-chip pull-up resistor can be specified

by a software setting.

Input port

XT2

P130

Output

Port 13.

1-bit output port.

Output port

−

P144

I/O

Port 14.

1-bit I/O port.

Output of P144 can be set to the N-ch open-drain output (VDD

tolerance).

Input/output can be specified in 1-bit units.Use of an on-chip

pull-up resistor can be specified by a software setting.

Input port

TxD2

GPIO0

I/O

1-bit I/O port of RF transceiver control.

Input port

−

GPIO1

I/O

1-bit I/O port of RF transceiver control.

Input port

−

GPIO2

I/O

1-bit I/O port of RF transceiver control.

Input port

P15/RTCDIV/

RTCCL

GPIO3

I/O

1-bit I/O port of RF transceiver control.

Input port

P16/TI01/TO01/

INTP5

Note

If on-chip debugging is enabled by using an option byte, be sure to pull up the P40/TOOL0 pin externally