H8SX1520 Datasheet, PDF (252/846 Pages) Renesas Technology Corp – 32-Bit CISC Microcomputer H8SX Family H8SX/1500 Series

Section 8 I/O Ports
Bit
Bit Name
Initial Value
R/W
7
Pn7ICR
0
R/W
6
Pn6ICR
0
R/W
5
Pn5ICR
0
R/W
4
Pn4ICR
0
R/W
3
Pn3ICR
0
R/W
2
Pn2ICR
0
R/W
1
Pn1ICR
0
R/W
0
Pn0ICR
0
R/W
Note: The lower four bits are valid and the upper four bits are reserved for port 2 input buffer control register (P2ICR).
The lower seven bits are valid and the upper one bit is reserved for port 6 input buffer control register (P6ICR).
The upper seven bits are valid and the lower one bit is reserved for port A input buffer control register (PAICR).
8.1.5 Pull-Up MOS Control Register (PnPCR) (n = D, H, J, and K)
PCR is an 8-bit readable/writable register that controls on/off of the port input pull-up MOS.
If a bit in PCR is set to 1 while the pin is in input state, the input pull-up MOS corresponding to
the bit in PCR is turned on. Table 8.3 shows the input pull-up MOS status.
The initial value of PCR is H'00.
Bit
Bit Name
Initial Value
R/W
7
Pn7PCR
0
R/W
6
Pn6PCR
0
R/W
5
Pn5PCR
0
R/W
4
Pn4PCR
0
R/W
3
Pn3PCR
0
R/W
2
Pn2PCR
0
R/W
1
Pn1PCR
0
R/W
0
Pn0PCR
0
R/W
Table 8.3 Input Pull-Up MOS State
Port
Pin State
Reset
Software
Other
Standby Mode Operation
Port D On-chip peripheral module output OFF
OFF
OFF
Port input
OFF
ON/OFF
ON/OFF
Port H Port output
OFF
OFF
OFF
Port input
OFF
ON/OFF
ON/OFF
Port J On-chip peripheral module output OFF
OFF
OFF
Port input
OFF
ON/OFF
ON/OFF
Port K On-chip peripheral module output OFF
OFF
OFF
Port input
OFF
ON/OFF
ON/OFF
[Legend]
OFF:
ON/OFF:
The input pull-up MOS is always off.
If PCR is set to 1, the input pull-up MOS is on; if PCR is cleared to 0, the input pull-up
MOS is off.
Rev. 3.00 Mar. 14, 2006 Page 214 of 804
REJ09B0104-0300