M16C6N4 Datasheet, PDF (263/406 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

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M16C/6N Group (M16C/6N4)
20. Programmable I/O Ports
Port Pi Direction Register (i = 0 to 7, 9, 10) ^{(1) (2)}
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PD0 to PD3
PD4 to PD7
PD9, PD10
Address
03E2h, 03E3h, 03E6h, 03E7h
03EAh, 03EBh, 03EEh, 03EFh
03F3h, 03F6h
After Reset
00h
00h
00h
Bit Symbol
Bit Name
Function
RW
PDi_0
Port Pi_0 Direction Bit _{0 : Input mode}
RW
PDi_1 Port Pi_1 Direction Bit
(Functions as an input port)
RW
PDi_2
Port Pi_2 Direction Bit
1 : Output mode
(Functions as an output port)
RW
PDi_3 Port Pi_3 Direction Bit
RW
PDi_4 Port Pi_4 Direction Bit
RW
PDi_5 Port Pi_5 Direction Bit
RW
PDi_6 Port Pi_6 Direction Bit
RW
PDi_7 Port Pi_7 Direction Bit
RW
NOTES:
1. Make sure the PD7 and PD9 registers are written to by the next instruction after setting the PRC2 bit in the
PRCR register to "1" (write enabled).
2. During memory expansion and microprocessor modes, the PD register for the pins functioning as bus control
pins (A0 to A19, D0 to D15, CS0 to CS3, RD, WRL/WR, WRH/BHE, ALE, RDY, HOLD, HLDA and BCLK)
cannot be modified.
Port P8 Direction Register
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PD8
Address
03F2h
After Reset
00X00000b
Bit Symbol
Bit Name
Function
RW
PD8_0 Port P8_0 Direction Bit _{0 : Input mode}
RW
PD8_1 Port P8_1 Direction Bit
(Functions as an input port)
RW
PD8_2
Port P8_2 Direction Bit
1 : Output mode
(Functions as an output port)
RW
PD8_3 Port P8_3 Direction Bit
RW
PD8_4 Port P8_4 Direction Bit
RW
-
Nothing is assigned. When write, set to "0".
(b5)
When read, its content is indeterminate.
-
PD8_6
Port P8_6 Direction Bit
0 : Input mode
(Functions as an input port)
RW
PD8_7
Port P8_7 Direction Bit
1 : Output mode
(Functions as an output port)
RW
Figure 20.7 PD0 to PD10 Registers
Rev.2.30 Oct 24, 2005 page 245 of 376
REJ09B0009-0230