NEC UPD703116 User Manual page 695

(c) Port 2 function control register (PFC2)
This register can be read/written in 8-bit or 1-bit units. Write 0 in bits 0, 5, and 6.
Caution When port mode is specified by the port 2 mode control register (PMC2), the setting of
this register is invalid.
7 6
PFC2 PFC27 0
Bit position Bit name
7 PFC27
4 to 1 PFC24 to
PFC21
CHAPTER 14 PORT FUNCTIONS
5 4 3
0 PFC24 PFC23 PFC22
Specifies operation mode of P27 pin in control mode.
0: External interrupt request (INTP31) input mode
1: TO3 output mode
Specify operation mode of P24 to P21 pins in control mode.
0: External interrupt request (INTP24 to INTP21) input mode
1: TO24 to TO21 output mode
User's Manual U14492EJ5V0UD
2 1 0
PFC21 0 FFFFF464H
Function
Address Initial value
00H
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