Timer - Renesas M16C FAMILY series Hardware Manual

M 1 6 C 2 / 8 G o r u p ( M 1 6 C

12. Timer

Eight 16-bit timers, each capable of operating independently of the others, can be classified by function as
either timer A (five) and timer B (three). The count source for each timer acts as a clock, to control such
timer operations as counting, reloading, etc. Figures 12.1 and 12.2 show block diagrams of timer A and
timer B configuration, respectively.
• Main clock
f
1
• PLL clock
• On-chip oscillator
clock
f f f
8
1 or 2
TA0
IN
TA1
IN
TA2
IN
TA3
IN
TA4
IN
Figure 12.1 Timer A Configuration
R e . v 2 0 . 0 J a . n 3 , 1 2 0 0 7
R E J 0 9 B 0 0 4 7 0 - 2 0 0
2 / , 8 M 1 6 C 2 / 8 ) B
f
2
PCLK0 bit = 0
1/2
f
PCLK0 bit = 1
f
1/8
f
1/4
f f
32 C32
Noise
filter
Noise
filter
Noise
filter
Noise
filter
Noise
filter
Timer B2 overflow or underflow
page 98
f o 3 8 5
f
1 or 2
X
CIN
8
Set the CPSR bit in the
CPSRF register to "1"
32
(prescaler reset)
• Timer mode
• One-shot timer mode
• Pulse Width Measuring (PWM) mode
• Event counter mode
• Timer mode
• One-shot timer mode
• PWM mode
• Event counter mode
• Timer mode
• One-shot timer mode
• PWM mode
• Event counter mode
• Timer mode
• One-shot timer mode
• PWM mode
• Event counter mode
• Timer mode
• One-shot timer mode
• PWM mode
• Event counter mode
Clock prescaler
f
1/32 C32
Reset
Timer A0 interrupt
Timer A0
Timer A1 interrupt
Timer A1
Timer A2 interrupt
Timer A2
Timer A3 interrupt
Timer A3
Timer A4 interrupt
Timer A4
12. Timer