HD6433044 Datasheet, PDF (784/867 Pages) Hitachi Semiconductor – Hitachi Single-Chip Microcomputer

TIOR2—Timer I/O Control Register 2
Bit
Initial value
Read/Write
7
6
5
4
—
IOB2 IOB1 IOB0
1
0
0
0
—
R/W R/W R/W
Note: Bit functions are the same as for ITU0.
H'79
ITU2
3
2
1
0
—
IOA2 IOA1 IOA0
1
0
0
0
—
R/W
R/W
R/W
TIER2—Timer Interrupt Enable Register 2
Bit
7
6
5
4
—
—
—
—
Initial value
1
1
1
1
Read/Write
—
—
—
—
Note: Bit functions are the same as for ITU0.
H'7A
ITU2
3
2
1
0
—
OVIE IMIEB IMIEA
1
0
0
0
—
R/W
R/W
R/W
TSR2—Timer Status Register 2
Bit
7
6
5
4
—
—
—
—
Initial value
1
1
1
1
Read/Write
—
—
—
—
Note: * Only 0 can be written, to clear the flag.
Bit functions are the same as for ITU0.
H'7B
ITU2
3
2
1
0
—
OVF IMFB IMFA
1
0
0
0
— R/(W)* R/(W)* R/(W)*
The function is the same as ITU0.
Overflow flag
0 [Clearing condition]
Read OVF when OVF = 1, then write 0 in OVF.
1 [Setting condition]
The TCNT value overflows (from H'FFFF to H'0000)
or underflows (from H'0000 to H'FFFF)
777