DS80C320-MCG Datasheet, PDF (130/175 Pages) Dallas Semiconductor – High-Speed Microcontroller User Guide

High-Speed Microcontroller User’s Guide
TIMER/COUNTER 2 AUTO RELOAD MODE Figure 11-5
(a) DCEN = 0
OSC INPUT TO TIMER
CLK MODE TIMER INPUT
DIVIDE BY 4 OSC/1
PMM1
OSC/16
PMM2
OSC/256
T2 = P1.0
TR2 = T2CON.2
T2EX = P1.1
EXEN2 = T2CON.3
DIVIDE ^{T2M = CKCON.5}
BY 12 ⁰
C/ T2 = T2CON.1
DIVIDE
BY 4
1
0
CLK
0
TL2
78
15
TH2
1
TF2 =
T2CON.7
RCAP2L RCAP2H
0
78
15
EXF2 =
T2CON.6
TIMER 2
INTERRUPT
(b) DCEN = 1
OSC INPUT TO TIMER
CLK MODE TIMER INPUT
DIVIDE BY 4 OSC/1
PMM1
OSC/16
PMM2
OSC/256
DIVIDE
BY 12
DIVIDE
BY 4
(DOWN COUNTING RELOAD VALUE)
T2M = CKCON.5
0FFH
0FFH
0
C/ T2 = T2CON.1
0
CLK ₀
78
15
1
TL2
TH2
T2 = P1.0
TR2 = T2CON.2
1
0
78
15
RCAP2L RCAP2H
T2EX = P1.1
COUNT DIRECTION
(1 = UP, 0 = DOWN)
(UP COUNTING RELOAD VALUE)
TF2 =
T2CON.7
TIMER 2
INTERRUPT
EXF2 =
T2CON.6
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