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Section 8 I/O Ports
8.3.2
Port Control Register 0 (PTCNT0)
PTCNT0 selects pins for 14-bit PWM timer outputs and the control mode for external extension.
Bit
Bit Name
7
SCPFSEL1 0
6
SCPFSEL3 0
5, 4
3
PWMXS
2
1
OBE
0
Note: * The PF3/EXPWX3 pin is available only in the H8S/2472 Group.
Rev. 1.00 Mar. 12, 2008 Page 356 of 1178
REJ09B0403-0100
Initial Value
R/W
R/W
R/W
All 0
R/W
0
R/W
0
R/W
0
R/W
0
R/W
Description
Controls the internal connection of TxD1 and RxD1
with the SCI_1 as the smart card interface.
0: TxD1 and RxD1 are not internally connected.
1: TxD1 and RxD1 are internally connected.
Controls the internal connection of TxD3 and RxD3
with the SCI_3 as the smart card interface.
0: TxD3 and RxD3 are not internally connected.
1: TxD3 and RxD3 are internally connected.
Reserved
The initial value should not be changed.
Selects pins for 14-bit PWM timer outputs.
0: P60/PWX0, P61/PWX1, P62/PWX2, P63/PWX3
are selected
1: P93/ExPWX0, P94/ExPWX1, PF6/ExPWX2,
PF3/ExPWX3* are selected
Reserved
The initial value should not be changed.
Selects glueless extension.
0: Control by RD, HWR, LWR
1: Control by RD, WR, HBE, LBE
(glueless extension)
Reserved
The initial value should not be changed.
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