8-Bit Timer / Counter Mode - Abov MC80F0304 User Manual

MC80F0304/08/16

13.1 8-bit Timer / Counter Mode

The MC80F0304/0308/0316 has four 8-bit Timer/Counters, Tim- PWM3E of TM1 or TM3 should be cleared to "0" (Figure 13-3 ).
er 0, Timer 1, Timer 2, Timer 3. The Timer 0, Timer 1 are shown These timers have each 8-bit count register and data register. The
in Figure 13-3 and Timer 2, Timer 3 are shown in Figure 13-4 . put. The internal clock has a prescaler divide ratio option of 1, 2, count register is increased by every internal or external clock in-
The "timer" or "counter" function is selected by control registers 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048 or external clock (se-
TM0, TM1, TM2, TM3 as shown in Figure 13-1 . To use as an 8- bit timer/counter mode, bit CAP0, CAP1, CAP2, or CAP3 of lected by control bits TxCK0, TxCK1, TxCK2 of register TMx).
TMx should be cleared to "0" and 16BIT and PWM1E or
TM0 - 7 - 6 5 CAP0 T0CK2 4 3 T0CK1 BTCL T0CK0 2 1 T0CN T0ST 0 ADDRESS: 0D0 INITIAL VALUE: --00 0000 H
- - 0 X X X X X B
X means don't care
TM1 7 POL 16BIT 6 5 PWM1E CAP1 4 3 BTCL T1CK1 T1CK0 2 1 T1CN T1ST 0 ADDRESS: 0D2 H
X 0 0 0 X X X X INITIAL VALUE: 00 H
X means don't care
T0CK[2:0]
EDGE DETECTOR
EC0 PIN 111
T0ST
÷ 2 000 0: Stop
÷ 8 ÷ 4 001 1: Clear and start
÷ 32 011 010 T0 (8-bit) clear
X IN PIN ÷ 128 100 TIMER 0
÷ 2048 ÷ 512 101 T0CN Comparator T0IF INTERRUPT
110
MUX TIMER 0 TDR0 (8-bit) F/F
R05 / T0O
T1CK[1:0]
T1ST
11 0: Stop
÷ 1 00 1: Clear and start
÷ 2 01 T1 (8-bit) clear
÷ 8 10 TIMER 1
MUX T1CN Comparator T1IF INTERRUPT
TIMER 1
TDR1 (8-bit)
Figure 13-3 8-bit Timer/Counter 0, 1
November 4, 2011 Ver 2.12 61