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R8C/14 Group, R8C/15 Group 17. Programmable I/O Ports
Rev.2.10 Jan 19, 2006 Page 184 of 253
REJ09B0164-0210
Figure 17.5 PD1, PD3 and PD4 Registers
Figure 17.6 P1, P3 and P4 Registers
Port Pi Direction Register (i=1, 3, 4)
(1, 2)
Symbol Address After Reset
PD1
00E3h 00h
PD3
00E7h 00h
PD4
00EAh 00h
Bit Symbol Bit Name Function RW
NOTES :
1.
2.
PDi_3 Port Pi3 Direction Bit
PDi_5
Port Pi0 Direction Bit
Port Pi1 Direction Bit
Port Pi4 Direction Bit
Port Pi2 Direction Bit RW
RW
Port Pi5 Direction Bit
RW0 : Input mode
(Functions as an input port)
1 : Output mode
(Functions as an output port)
RW
RW
Port Pi6 Direction Bit RW
b7 b6 b5 b4 b3 b2
PDi_2
b1 b0
PDi_1
PDi_0
PDi_4
Bits PD4_0 to PD4_4, PD4_6 and PD4_7 in the PD4 register are unavailable on this MCU. If it is necessary to set bits
PD4_0 to PD4_4, PD4_6 and PD4_7, set to “0” (input mode). When read, the content is0”.
PDi_7 Port Pi7 Direction Bit RW
Bits PD3_0 to PD3_2 and PD3_6 in the PD3 register are unavailable on this MCU. If it is necessary to set bits PD3_0 to
PD3_2 and PD3_6, set to “0” (input mode). When read, the content is0”.
PDi_6
RW
Port Pi Register (i=1, 3, 4)
(1, 2)
Symbol Address After Reset
P1
00E1h Indeterminate
P3
00E5h Indeterminate
P4
00E8h Indeterminate
Bit Symbol Bit Name Function RW
NOTES :
1.
2.
RW
Port Pi6 Bit RW
Port Pi2 Bit
RW
The pin level on any I/O port which is set
for input mode can be read by reading the
corresponding bit in this register. The pin
level on any I/O port w hich is set for
output mode can be controlled by w riting
to the corresponding bit in this register.
0 : “L” level
1 : “H” level
(1)
RW
RW
RW
RWPort Pi0 Bit
Port Pi1 Bit
Port Pi7 Bit
Port Pi5 Bit
Port Pi4 Bit
Port Pi3 Bit
b7 b6 b5 b4 b0
Pi_1
Pi_5
Pi_0
Pi_2
Pi_4
Pi_3
b3 b2 b1
Bits P4_0 to P4_4 in the P4 register are unavailable on this MCU. If it is necessary to set bits P4_0 to P4_4, set to
“0” (“L” level). When read, the content is “0”.
Bits P3_0 to P3_2 and P3_6 in the P3 register are unavailable on this MCU. If it is necessary to set bits P3_0 to P3_2
and P3_6, set to “0” (L” level). When read, the content is0”.
Pi_7
Pi_6
RW
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