UPD78F0138 NEC, UPD78F0138 Datasheet - Page 92

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

4.2 Port Configuration
92
P120
P130
P140
P141
Control registers
Port
Pull-up resistor
Ports include the following hardware.
Pin Name
Item
I/O
Output
I/O
I/O
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.
Port mode register (PM0, PM1, PM3 to PM7, PM12, PM14)
Port register (P0 to P7, P12 to P14)
Pull-up resistor option register (PU0, PU1, PU3 to PU5, PU7, PU12, PU14)
Total: 51 (CMOS I/O: 38, CMOS input: 8, CMOS output: 1, N-ch open drain I/O: 4)
• Mask ROM version
• Flash memory version: Total: 38
Total: 42 (software control: 38, mask option specification: 4)
Table 4-2. Port Functions (2/2)
CHAPTER 4 PORT FUNCTIONS
Table 4-3. Port Configuration
User’s Manual U16228EJ2V0UD
Function
Configuration
Input
Output
Input
After Reset
Alternate Function
INTP0
PCL/INTP6
BUZ/INTP7
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