HD64F38024HV Datasheet, PDF (600/684 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip Microcomputer H8 Family/H8/300L Super Low Power Series

Appendix B Internal I/O Registers
TMG—Timer Mode Register G
H'BC
Timer G
Bit
Initial value
Read/Write
7
OVFH
0
R/(W)^*
6
OVFL
0
R/(W)^*
5
OVIE
0
R/W
4
IIEGS
0
R/W
3
CCLR1
0
R/W
2
CCLR0
0
R/W
1
CKS1
0
R/W
0
CKS0
0
R/W
Clock Select
0 0 Internal clock: counting on φ/64
1 Internal clock: counting on φ/32
1 0 Internal clock: counting on φ/2
1 Internal clock: counting on φ_W/4
Counter Clear
0 0 TCG clearing is disabled
1 TCG cleared by falling edge of input capture
input signal
1 0 TCG cleared by rising edge of input capture
input signal
1 TCG cleared by both edges of input capture
input signal
Input Capture Interrupt Edge Select
0 Interrupt generated on rising edge of input capture
input signal
1 Interrupt generated on falling edge of input capture
input signal
Timer Overflow Interrupt Enable
0 TCG overflow interrupt request is disabled
1 TCG overflow interrupt request is enabled
Timer Overflow Flag L
0 Clearing condition:
After reading OVFL = 1, cleared by writing 0 to OVFL
1 Setting condition:
Set when TCG overflows from H'FF to H'00
Timer Overflow Flag H
0 Clearing condition:
After reading OVFH = 1, cleared by writing 0 to OVFH
1 Setting condition:
Set when TCG overflows from H'FF to H'00
Note: * Bits 7 and 6 can only be written with 0, for flag clearing.
Rev. 8.00 Mar. 09, 2010 Page 578 of 658
REJ09B0042-0800