M16C6N4 Datasheet, PDF (266/406 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

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M16C/6N Group (M16C/6N4)
20. Programmable I/O Ports
Port Control Register
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
PCR
Address
03FFh
After Reset
00h
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 P1_0 to P1_7 pins
are read. When set for output, the RW
port latch is read.
1 : The port latch is read regardless of
whether the port is set for input or
output.
Nothing is assigned. When write, set to "0".
When read, their contents are "0".
-
Figure 20.10 PCR Register
Rev.2.30 Oct 24, 2005 page 248 of 376
REJ09B0009-0230