UPD78F0138 NEC, UPD78F0138 Datasheet - Page 37

• Manufacturer Part Number: UPD78F0138
• Description: (UPD78xxxx) 8-Bit Single-Chip Microcontrollers
• Manufacturer: NEC

(1) Port pins (2/2)
P40 to P43
P50 to P53
P60 to P63
P70 to P77
P120
P130
P140
P141
Pin Name
I/O
I/O
I/O
I/O
I/O
Output
I/O
I/O
Port 4.
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.
Port 5.
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.
Port 6.
4-bit I/O port (N-ch open drain).
Input/output can be specified in 1-bit units.
Use of an on-chip pull-up resistor can be specified by a mask
option only for mask ROM versions.
Port 7.
8-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.
Port 12.
1-bit I/O port.
Use of an on-chip pull-up resistor can be specified by a
software setting.
Port 13.
1-bit output-only port.
Port 14.
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.
CHAPTER 2 PIN FUNCTIONS
User’s Manual U16228EJ2V0UD
Function
Input
Input
Input
Input
Input
Output
Input
After Reset
Alternate Function
KR0 to KR7
INTP0
PCL/INTP6
BUZ/INTP7
−
−
−
−
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