HD64F3664BPV Datasheet, PDF (171/446 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

Section 10 Timer A
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.
Bit
Initial
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 /16
w
110: φ /8
w
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. 6.00 Mar. 24, 2006 Page 141 of 412
REJ09B0142-0600