Pin Functions - Renesas F-ZTAT H8 Series Hardware Manual

8. I/O Ports
Bit 0—P1 /TMOW Pin Function Switch (TMOW): This bit selects whether pin P1
0
used as P1 or as TMOW.
0
Bit 0: TMOW Description
0 Functions as P1
1 Functions as TMOW output pin
8.2.3

Pin Functions

H8/3857 Group port 1 pin functions are shown in figure 8.3 (a), and H8/3854 Group port 1 pin
functions in figure 8.3 (b).
Table 8.3 (a) H8/3857 Group Port 1 Pin Functions
Pin Pin Functions and Selection Method
P1 /IRQ /TMIF The pin function depends on bit IRQ3 in PMR1, bits CKSL2 to CKSL0 in TCRF,
7 3
and bit PCR1
IRQ3
PCR1
CKSL2 to CKSL0
Pin function
Note: When using as TMIF input pin, clear bit IEN3 in IENR1 to 0, disabling
P1 /IRQ /TMIC The pin function depends on bit IRQ2 in PMR1, bits TMC2 to TMC0 in TMC, and
6 2
bit PCR1
IRQ2
PCR1
TMC2 to TMC0
Pin function
Note: When using as TMIC input pin, clear bit IEN2 in IENR1 to 0, disabling
Rev.3.00 Jul. 19, 2007 page 178 of 532
REJ09B0397-0300
I/O pin
0
in PCR1.
7
0
7
P1 input pin
7
IRQ interrupts.
3
in PCR1.
6
0
6
P1 input pin
6
IRQ interrupts.
2
0
1
***
output pin IRQ
P1
7
0
1
***
output pin IRQ
P1
6
/TMOW is
0
(initial value)
1
*
Not 0** 0**
IRQ
input pin /TMIF
3 3
input pin
1
*
Not 111 111
IRQ
input pin /TMIC
2 2
input pin