NEC UPD703116 User Manual page 691

(b) Port 1 mode control register (PMC1)
This register can be read/written in 8-bit or 1-bit units. Write 0 in bits 6 and 7.
Caution The PMC11, PMC12, PMC14, and PMC15 bits also serve as external interrupts (INTP100,
INTP101, INTP110, and INTP111). When not using them as external interrupts, mask
interrupt requests (refer to 7.3.4 Interrupt control register (xxICn)).
7 6
PMC1 0 0
Bit position Bit name
5 PMC15
4 PMC14
3 PMC13
2 PMC12
1 PMC11
0 PMC10
CHAPTER 14 PORT FUNCTIONS
5 4 3
PMC15 PMC14 PMC13
Specifies operation mode of P15 pin.
0: I/O port mode
1: TCLR11 input mode or external interrupt request (INTP111) input mode
Specifies operation mode of P14 pin.
0: I/O port mode
1: TCUD11 input mode or external interrupt request (INTP110) input mode
Specifies operation mode of P13 pin.
0: I/O port mode
1: TIUD11 input mode or TO11 output mode
Specifies operation mode of P12 pin.
0: I/O port mode
1: TCLR10 input mode or external interrupt request (INTP101) input mode
Specifies operation mode of P11 pin.
0: I/O port mode
1: TCUD10 input mode or external interrupt request (INTP100) input mode
Specifies operation mode of P10 pin.
0: I/O port mode
1: TIUD10 input mode or TO10 output mode
User's Manual U14492EJ5V0UD
2 1 0
PMC12 PMC11 PMC10
Function
Address Initial value
FFFFF442H 00H
691