SN8P2740 Series
ADC, OP-amp, Comparator 8-Bit Micro-Controller
8.3.9 TC0 TIMER OPERATION EXPLAME
TC0 TIMER CONFIGURATION:
; Reset TC0 timer.
CLR
TC0M
; Clear TC0M register.
; Set TC0 rate.
MOV
A, #0nnn0000b
B0MOV
TC0M, A
; Set TC0 clock source.
B0BCLR
FTC0CKS
FTC0CKS
; TC0 clock source is Fcpu.
; TC0 clock source is Fhosc.
; or
B0BSET
; Set TC0C and TC0R register for TC0 Interval time.
MOV
B0MOV
B0MOV
A, #value
TC0C, A
TC0R, A
; TC0C must be equal to TC0R.
; Clear TC0IRQ
B0BCLR
FTC0IRQ
; Enable TC0 timer and interrupt function.
B0BSET
B0BSET
FTC0IEN
FTC0ENB
; Enable TC0 interrupt function.
; Enable TC0 timer.
TC0 PWM CONFIGURATION:
; Reset TC0 timer.
CLR
TC0M
; Clear TC0M register.
; Set TC0 rate.
MOV
A, #0nnn0000b
B0MOV
TC0M, A
; Set TC0 clock source.
B0BCLR
FTC0CKS
FTC0CKS
; TC0 clock source is Fcpu.
; TC0 clock source is Fhosc.
; or
B0BSET
; Set TC0C and TC0R register for PWM cycle.
MOV
B0MOV
B0MOV
A, #value1
TC0C, A
TC0R, A
; TC0C must be equal to TC0R.
; Set TC0D register for PWM duty.
MOV
A, #value2
; TC0D must be greater than TC0R.
B0MOV
TC0D, A
; Set PWM output phase.
B0BCLR
FTC0DIR
FTC0DIR
; High pulse and low idle status.
; Low pulse and high idle status.
; or
B0BSET
; Enable PWM and TC0 timer.
B0BSET
B0BSET
FPWM0OUT
FTC0ENB
; Enable PWM.
; Enable TC0 timer.
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Version 2.0
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