M32C80 Datasheet, PDF (287/352 Pages) Renesas Technology Corp – 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

M32C/80 Group
22. Programmable I/O Ports
Port Pi Register (i=0 to 10)⁽¹⁾
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
P0 to P5
P6 to P10
Address
03E016, 03E116, 03E416, 03E516, 03E816, 03E916
03C016, 03C116(2), 03C416(3), 03C516, 03C816
Bit
Symbol
Bit Name
Function
Pi_0 Port Pi0 Bit
After Reset
Indeterminate
Indeterminate
RW
RW
Pi_1 Port Pi1 Bit
RW
Pi_2 Port Pi2 Bit
Pi_3 Port Pi3 Bit
Pi_4 Port Pi4 Bit
Pi_5 Port Pi5 Bit
Pin levels can be read by reading _RW
bits corresponding to programmable
ports in input mode.
Pin levels can be controlled by
RW
writing to bits corresponding to
programmable ports in output mode.
RW
0: "L" level
1: "H" level
RW
Pi_6 Port Pi6 Bit
RW
Pi_7 Port Pi7 Bit
RW
NOTES:
1. In memory expansion mode and microprocessor mode, the Pi register cannot control pins being used
as bus control pins (A0 to A22, A23, D0 to D15, CS0 to CS3, WRL/WR, WRH/BHE, RD,
BCLK/ALE/CLKOUT, HLDA/ALE, HOLD, ALE and RDY).
2. P70 and P71 are ports for the N-channel open drain output. The pins go into high-impedance states
when P70 and P71 output "H" signal.
3. The P8_5 bit is for read only.
Figure 22.6 P0 to P10 Registers
Rev. 1.00 Nov. 01, 2005 ^{Page 268} of 330
REJ09B0271-0100