M37160M8 Datasheet, PDF (107/131 Pages) Renesas Technology Corp – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

M37160M8/MA/MF-XXXSP/FP,M37160EFSP/FP
Address 00C316
Port P1 direction register
b7 b6 b5 b4 b3 b2 b1 b0
0
Port P1 direction register (D1) [Address 00C316]
B
Name
Functions
After reset R W
0 _{Port P1 direction register} 0 : Port P10 input mode (note)
1
RW
1 : Port P10 output mode
1
0 : Port P11 input mode
0
RW
1 : Port P11 output mode
2
0 : Port P12 input mode
0
RW
1 : Port P12 output mode
3
0 : Port P13 input mode
0
RW
1 : Port P13 output mode
4
0 : Port P14 input mode
0
RW
1 : Port P14 output mode
5
0 : Port P15 input mode
1
RW
1 : Port P15 output mode
6
0 : Port P16 input mode
0
RW
1 : Port P16 output mode
7 _{Fix this bit to "0"}
0
RW
Note: When using P10 as a general-purpose port, set the Clock Control Register 3
(address 021216) bit 7 to 1.
When using P10 as a clock control signal, refer to 8.14.1 oscillation control.
P10 becomes clock control signal output and H output setting immediately
after reset release , and P16 becomes L output setting after reset release.
Address 00C616
Port P3 register
b7 b6 b5 b4 b3 b2 b1 b0
Port P3 register (P3) [Address 00C616]
B
Name
Functions
After reset R W
0 Port P3 register
Port P30 data
Indeterminate R W
1
Port P31 data
2 Switch bit of I²C-BUS
interface and port P3
(BSEL20) (See note)
0 : Port P30, Port P31
1 : I²CBUS (SDA3,SCL3)
3 SCL3/P31-SCL1/P11
SDA3/P30-SDA1/P13
0 : Connection
Course connection control bit 1: Cutting
(BSEL21)
Indeterminate R W
0
RW
0
RW
4 Nothing is assigned. This bit is write disable bit.
When this bit is read out, the value is "0."
0
R–
5 Port P3 register
Port P35 data
Indeterminate R –
6
Port P36 data
Indeterminate R –
7
Port P37data
Indeterminate R –
Notes • For the ports used as the Multi-master I²C-BUS interface, set their direction registers to 1.
• To use SCL3 and SDA3, set the I²C Control Register (address 00F916) bits 6–7 to 0.
Rev.1.01 2003.11.13 page 107 of 130