M16C62P_06 Datasheet, PDF (281/421 Pages) Renesas Technology Corp – 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/60 SERIES

M16C/62P Group (M16C/62P, M16C/62PT)
21. Programmable I/O Ports
Pull-Up Control Register 2
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
Address
After Reset
PUR2
03FEh
00h
Bit Symbol
Bit Name
Function
RW
PU20 P8_0 to P8_3 Pull-Up
0 : Not pulled high
RW
PU21 P8_4 to P8_7 Pull-Up ⁽²⁾
1 : Pulled high ⁽¹⁾
RW
PU22 P9_0 to P9_3 Pull-Up
RW
PU23 P9_4 to P9_7 Pull-Up
RW
PU24 P10_0 to P10_3 Pull-Up
RW
PU25 P10_4 to P10_7 Pull-Up
RW
—
Nothing is assigned. When w rite, set to “0”.
(b7-b6) When read, their contenta are “0”.
—
NOTES :
1. The pin for w hich this bit is “1” (pulled high) and the direction bit is “0” (input mode) is pulled high.
2. The P8_5 pin does not have pull-up.
Figure 21.11 PUR2 Register
Port Control Register
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
Address
After Reset
PCR
03FFh
00h
Bit Symbol
Bit Name
Function
RW
Port P1 Control Bit
Operation performed w hen the P1 register is read
0 : When the port is set for input, the input levels of
PCR0
P1_0 to P1_7 pins are read. When set for output,
the port latch is read.
RW
1 : The port latch is read regardless of w hether the
port is set for input or output.
—
Nothing is assigned. When w rite, set to “0”.
(b7-b1) When read, their contents are “0”.
—
Figure 21.12 PCR Register
Rev.2.41 Jan 10, 2006 Page 266 of 390
REJ09B0185-0241