Rev. 1.00, 09/03, page 145 of 704
7.3.4
Port 2 Pull-Up MOS Control Register (P2PCR)
P2PCR controls the on or off state of input pull-up MOSs for port 2.
Bit
Bit Name
Initial Value
R/W
Description
7 P27PCR
0
R/W
6 P26PCR
0
R/W
5 P25PCR
0
R/W
4 P24PCR
0
R/W
3 P23PCR
0
R/W
2 P22PCR
0
R/W
1 P21PCR
0
R/W
0 P20PCR
0
R/W
•
In normal extended and single-chip modes
When the pins are in the input states, the
corresponding input pull-up MOS is turned on
when a P2PCR bit is set to 1.
•
In multiplex extended mode
Operation is not affected.
7.3.5 Pin
Functions
When the corresponding bit in PTCNT2 is cleared to 0, port 2 pins can be used as TPU I/O pins.
The relationship between register setting values and pin functions is as follows.
•
P27/TIOCB2/TCLKD/A15/AD15
When the TIOCB2/TCLKDS bit in PTCNT2 is cleared to 0, this pin can be used as the
TIOCB2/TCLKD pin.
According to operating modes, the TPU channel 2 settings by the MD3 to MD0 bits in
TMDR_2, the IOB3 to IOB0 bits in TIOR_2, and the CCLR1 and CCLR0 bits in TCR_2, and
the combination of the TPSC2 to TPSC0 bits in TCR_0, the TIOCB2/TCLKDS bit, and the
P27DDR bit, pin functions change as follows.
•
Extended Mode (EXPE = 1)
Normal Extended Mode (ADMXE = 0)
Multiplex Extended Mode (ADMXE = 1)
P27DDR 0
1
P27 input pin
A15 output pin
AD15 I/O pin
TIOCB2 input pin
*
1
Pin function
TCLKD input pin
*
2
Summary of Contents for H8S/2437
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