M16C30_02 Datasheet, PDF (142/178 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Programmable I/O Port
Mitsubishi microcomputers
M16C / 30 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Port Pi direction register (Note 1, 2)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PDi (i = 0 to 10, except 8)
Address
03E216, 03E316, 03E616, 03E716, 03EA16
03EB16, 03EE16, 03EF16, 03F316, 03F616
When reset
0016
0016
Bit symbol
PDi_0
PDi_1
PDi_2
PDi_3
PDi_4
Bit name
Port Pi0 direction register
Port Pi1 direction register
Port Pi2 direction register
Port Pi3 direction register
Port Pi4 direction register
Function
0 : Input mode
(Functions as an input port)
1 : Output mode
(Functions as an output port)
(i = 0 to 10 except 8)
RW
PDi_5
PDi_6
PDi_7
Port Pi5 direction register
Port Pi6 direction register
Port Pi7 direction register
Note 1: Set bit 2 of protect register (address 000A16) to “1” before rewriting to
the port P9 direction register.
Note 2: In memory expansion and microprocessor mode, the contents of
corresponding port Pi direction register of 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
03F216
When reset
00X000002
Bit symbol
PD8_0
PD8_1
PD8_2
PD8_3
Bit name
Port P80 direction register
Port P81 direction register
Port P82 direction register
Port P83 direction register
Function
0 : Input mode
(Functions as an input port)
1 : Output mode
(Functions as an output port)
PD8_4
Port P84 direction register
Nothing is assigned.
In an attempt to write to this bit, write “0”. The value, if read, turns out to be
indeterminate.
PD8_6
PD8_7
Port P86 direction register
Port P87 direction register
0 : Input mode
(Functions as an input port)
1 : Output mode
(Functions as an output port)
RW
Figure 1.20.6. Direction register
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