HD64F2638F20J Datasheet, PDF (328/1512 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer H8S Family/H8S/2600 Series

Section 9 I/O Ports
H8S/2639, H8S/2638, H8S/2636,
H8S/2630, H8S/2635 Group
Port C MOS Pull-Up Control Register (PCPCR)
Bit
:
7
6
5
4
3
2
1
0
PC7PCR PC6PCR PC5PCR PC4PCR PC3PCR PC2PCR PC1PCR PC0PCR
Initial value :
0
0
0
0
0
0
0
0
R/W
: R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
PCPCR is an 8-bit readable/writable register that controls the MOS input pull-up function
incorporated into port C on an individual bit basis.
In modes 6 and 7, if PCPCR is set to 1 when the port is in the input state in accordance with the
settings of PCDDR, the MOS input pull-up is set to ON.
PCPCR is initialized to H'00 by a reset, and in hardware standby mode. It retains its prior state by
a manual reset or in software standby mode.
Port C Open Drain Control Register (PCODR)
Bit
Initial value
Read/Write
7
6
5
4
3
2
1
0
PC7ODR PC6ODR PC5ODR PC4ODR PC3ODR PC2ODR PC1ODR PC0ODR
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
PCDDR is an 8-bit Read/Write register and controls PMOS On/Off of each pin (PC7 to PC0) of
port C.
If PCODR is set to 1 by setting AE3 to AE0 in PFCR in mode other than address output mode,
port C pins function as NMOS open drain outputs and when the setting is cleared to 0, the pins
function as CMOS outputs.
PCODR is initialized to H'00 in reset mode or hardware standby mode. PCODR retains the last
state in software standby mode.
Page 278 of 1458
REJ09B0103-0800 Rev. 8.00
May 28, 2010