HD6433694 Datasheet, PDF (155/432 Pages) Renesas Technology Corp – 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Tiny Series

10.3 Register Descriptions
Timer A has the following registers.
• Timer mode register A (TMA)
• Timer counter A (TCA)
10.3.1 Timer Mode Register A (TMA)
TMA selects the operating mode, the divided clock output, and the input clock.
Initial
Bit
Bit Name Value R/W Description
7
TMA7
0
R/W Clock Output Select 7 to 5
6
TMA6
0
R/W These bits select the clock output at the TMOW pin.
5
TMA5
0
R/W 000: φ/32
001: φ/16
010: φ/8
011: φ/4
100: φ_w/32
101: φ_w/16
110: φ_w/8
111: φ_w/4
For details on clock outputs, see section 10.4.3, Clock
Output.
4

1

Reserved
This bit is always read as 1.
3
TMA3
0
R/W Internal Clock Select 3
This bit selects the operating mode of the timer A.
0: Functions as an interval timer to count the outputs of
prescaler S.
1: Functions as a clock-time base to count the outputs of
prescaler W.
Rev. 4.00, 03/04, page 127 of 400