m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 106

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

is described below.
Fig. 7.2.1 Block diagram of timer Ai (i = 0 to 9)
7.2 Block description
Figure 7.2.1 shows the block diagram of timer Ai (i = 0 to 9). Explanation of registers relevant to timer A
TAi
Timer A clock division
select bits (Note)
TAi
f
OUT
4096
f
512
N
f
f
16
64
f
f
2
1
Polarity
switching
Count source
select bit
Event counter mode
Timer mode
One-shot pulse mode
PWM mode
Trigger
Timer mode
(Gate function)
7905 Group User’s Manual Rev.1.0
Pulse output
function select bit
Up-down bit
(Low-order 8 bits)
Count start bit
Countdown
Toggle
F.F.
Data bus (odd)
Timer Ai reload register (16)
Data bus (even)
Timer Ai counter (16)
Note: Common to timers A0 to A9.
Countup/Countdown
switching
(Always “countdown” except
for in the event counter
mode)
(High-order 8 bits)
7.2 Block description
TIMER A
Timer Ai
interrupt
request bit
7-3