Renesas Hitachi H8S/2191, Hardware Manual, Page: 272 / 1065

Rev. 2.0, 11/00, page 245 of 1037
11.3.3 Pin Functions
This section describes the port 1 pin functions and their selection methods.
(1) P17/TMOW
P17/TMOW is switched as shown below according to the PMR17 bit in PMR1 and the
PCR17 bit in PCR1.
PMR17 PCR17 Pin Function
0 P17 input pin 0
1 P17 output pin
1
*
TMOW output pin
(2) P16/
,&
P16/
,& is switched as shown below according to the PMR16 bit in PMR1, the NC on/off bit
in prescalar unit control/status register (PCSR), and the PCR16 bit in PCR1.
PMR16 PCR16 NC on/off Pin Function
0 P16 input pin 0
1
*
P16 output pin
0 Noise cancel invalid 1
*
1
,&
input pin
Noise cancel valid
(3) P15/
,54 to P10/,54
P15/
,54 to P10/,54 are switched as shown below according to the PMR1n bit in PMR1
and the PCR1n bit in PCR1.
PMR1n PCR1n Pin Function
0 P1n input pin 0
1 P1n output pin
1
*
,54Q
input pin
(n = 5 to 0)
Notes: 1. * Don't care.
2. The
,54
to
,54
input pins can select the leading or falling edge as an edge sense
(the
,54
pin can select both edges). See section 6.2.4, Edge Select Register
(IEGR).
3.
,54
or
,54
can be used as a timer J event input and
,54
can be used as a timer
R input capture input. For details, see section 14, "Timer J" or section 16, "Timer R".