M16C1N Datasheet, PDF (172/238 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/10 SERIES

M16C/1N Group
17. Programmable I/O Ports
Port Pi direction register (Note 1, 2, 3)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PDi (i = 0 to 5)
Address
00E216, 00E316
00E616
00E716, 00EA16
00EB16
When reset
0016
XXXXXX002
0016
XXXXX0002
Bit symbol
Bit name
Function
RW
PDi_0
PDi_1
PDi_2
PDi_3
Port Pi0 direction register 0 : Input mode
RW
Port Pi1 direction register
(Functions as an input port)
RW
Port Pi2 direction register
1 : Output mode
(Functions as an output port)
RW
Port Pi3 direction register
(i = 0 to 5)
RW
PDi_4 Port Pi4 direction register
RW
PDi_5 Port Pi5 direction register
RW
PDi_6 Port Pi6 direction register
RW
PDi_7 Port Pi7 direction register
RW
Note 1: Set bit 2 of protect register (address 000A16) to "1" before rewriting to the port P0 direction register.
Note 2: Nothing is assigned in bit 2 to bit 7 of port P2 direction register. When write, set "0". When read, their
contents are "0".
Note 3: Nothing is assigned in bit 3 to bit 7 of port P5 direction register.
When write, set "0".
When read, their contents are "0".
Figure 17.5 Port Pi direction register
Port Pi register (Note 1, 2)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
Pi (i = 0 to 5)
Address
00E016, 00E116, 00E416,
00E516, 00E816, 00E916
When reset
Indeterminate
Indeterminate
Bit symbol
Bit name
Function
RW
Pi_0
Pi_1
Pi_2
Pi_3
Pi_4
Port Pi0 register
Port Pi1 register
Port Pi2 register
Port Pi3 register
Port Pi4 register
Data is input and output to and from RW
each pin by reading and writing to and _RW
from each corresponding bit
0 : "L" level data
RW
1 : "H" level data
RW
(i = 0 to 5)
RW
Pi_5
Port Pi5 register
RW
Pi_6
Port Pi6 register
RW
Pi_7
Port Pi7 register
RW
Note 1: Nothing is assigned in bit 2 to bit 7 of port P2 register.
When write, set "0".
When read, their contents are "0".
Note 2: Nothing is assigned in bit 3 to bit 7 of port P5 register.
When write, set "0".
When read, their contents are "0".
Figure 17.6 Port Pi register
Rev.1.00 Oct 20, 2004 page 160 of 222
REJ09B0007-0100Z