M16C6S_09 Datasheet, PDF (146/208 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

M16C/6S Group
Programmable I/O Ports
Port control register
b7 b6 b5 b4 b3 b2 b1 b0
Symbpl
PCR
Address
03FF16
After reset
0016
Bit symbol
PCR0
(b7-b1)
Bit name
Function
RW
Port P1 control bit
Operation performed when the P1
register is read
0: When the port is set for input,
the input levels of P10 to P17 RW
pins are read. When set for
output, the port latch is read.
1: The port latch is read
regardless of whether the port
is set for input or output.
Nothing is assigned. In an attempt to write to these bits,
write “0”. The value, if read, turns out to be “0”.
Figure 1.18.9. PCR Register
Rev.5.01 Dec 10, 2009 page 146 of 201
REJ03B0014-0501