UPD78F0138 NEC, UPD78F0138 Datasheet - Page 42

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

2.2.4 P30 to P33 (port 3)
timer I/O.
(1) Port mode
(2) Control mode
2.2.5 P40 to P43 (port 4)
register 4 (PM4). Use of an on-chip pull-up resistor can be specified by pull-up resistor option register 4 (PU4).
2.2.6 P50 to P53 (port 5)
register 5 (PM5). Use of an on-chip pull-up resistor can be specified by pull-up resistor option register 5 (PU5).
2.2.7 P60 to P63 (port 6)
mode register 6 (PM6).
mask ROM versions.
2.2.8 P70 to P77 (port 7)
(1) Port mode
(2) Control mode
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P30 to P33 function as a 4-bit I/O port. These pins also function as pins for external interrupt request input and
The following operation modes can be specified in 1-bit units.
P40 to P43 function as a 4-bit I/O port. P40 to P43 can be set to input or output in 1-bit units using port mode
P50 to P53 function as a 4-bit I/O port. P50 to P53 can be set to input or output in 1-bit units using port mode
P60 to P63 function as a 4-bit I/O port. P60 to P63 can be set to input port or output port in 1-bit units using port
P60 to P63 are N-ch open-drain pins. Use of an on-chip pull-up resistor can be specified by a mask option only for
P70 to P77 function as an 8-bit I/O port. These pins also function as key interrupt input pins.
The following operation modes can be specified in 1-bit units.
P30 to P33 function as a 4-bit I/O port. P30 to P33 can be set to input or output in 1-bit units using port mode
register 3 (PM3). Use of an on-chip pull-up resistor can be specified by pull-up resistor option register 3 (PU3).
P30 to P33 function as external interrupt request input pins and timer I/O pins.
(a) INTP1 to INTP4
(b) TI51
(c) TO51
P70 to P77 function as an 8-bit I/O port. P70 to P77 can be set to input or output in 1-bit units using port mode
register 7 (PM7). Use of an on-chip pull-up resistor can be specified by pull-up resistor option register 7 (PU7).
P70 to P77 function as key interrupt input pins.
These are the external interrupt request input pins for which the valid edge (rising edge, falling edge, or both
rising and falling edges) can be specified.
This is an external count clock input pin to 8-bit timer/event counter 51.
This is a timer output pin.
CHAPTER 2 PIN FUNCTIONS
User’s Manual U16228EJ2V0UD