M32C83T datasheet(156/527 Pages) RENESAS

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Page 133

14. Timer

)

(

14. Timer

The microcomputer has eleven 16-bit timers. Five timers A and six timers B have different functions. Each

timer operates independently. The count source for each timer is the clock for timer operations including

counting and reloading, etc. Figures 14.1 and 14.2 show block diagrams of timer A and timer B configuration.

CST

00: Timer mode

10: One-shot timer mode

11: PWM mode

01: Event counter mode

TA0IN

TA1IN

TA2IN

TA3IN

TA4IN

Timer A0

Timer A1

Timer A2

Timer A3

Timer A4

f1 f8 f2n fC32

Timer A0 interrupt

Timer A1 interrupt

Timer A2 interrupt

Timer A3 interrupt

Timer A4 interrupt

Noise

filter

Noise

filter

Noise

filter

Noise

filter

Noise

filter

1/8

Main clock,

PLL clock or

On-chip

oscillator

clock

1/2n

(Note 1)

TCK1 to TCK0

00: Timer mode

10: One-shot tiemr mode

11: PWM mode

00: Timer mode

10: One-shot timer mode

11: PWM mode

00: Timer mode

10: One-shot timer mode

11: PWM mode

00: Timer mode

10: One-shot timer mode

11: PWM mode

01: Event counter mode

TCK1 to TCK0

TMOD1 to TMOD0

TA0TGH to TA0TGL

Timer B2 overflow

or underflow

CST: Bit in TCSPR register

TCK1 to TCK0, TMOD1 to TMOD0 : Bits in TAiMR register

TAiGH to TAiGL: Bits in ONSF register or TRGSR register (i=1 to 4)

NOTES:

1. The CNT3 to CNT0 bits in the TCSPR register select no division (n=0) or divide-by-2n (n=1 to 15).

f2n

TA1TGH to TA1TGL

TA2TGH to TA2TGL

TA3TGH to TA3TGL

TA4TGH to TA4TGL

TMOD1 to TMOD0

1/32

fC32

XCIN

Set the CPSR bit

in the CPSRF register to "1"

Reset

Clock prescaler

Figure 14.1 Timer A Configuration

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