HT46R23/HT46C23
Start_conversion:
clr
START
set
clr
START
; reset A/D
START
; start A/D
clr
ADF
; clear ADC interrupt request flag
; enable ADC interrupt
; enable global interrupt
set
set
EADI
EMI
:
:
:
; ADC interrupt service routine
ADC_ISR:
mov
mov
mov
acc_stack,a
; save ACC to user defined memory
a,STATUS
status_stack,a
; save STATUS to user defined memory
:
:
mov
mov
mov
mov
clr
a,ADRH
adrh_buffer,a
a,ADRL
adrl_buffer,a
START
START
START
:
; read conversion result high byte value from the ADRH register
; save result to user defined register
; read conversion result low byte value from the ADRL register
; save result to user defined register
set
; reset A/D
; start A/D
clr
:
EXIT_INT_ISR:
mov
mov
mov
reti
a,status_stack
STATUS,a
; restore STATUS from user defined memory
; restore ACC from user defined memory
a,acc_stack
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A/D Conversion Timing
Rev. 2.11
20
December 29, 2008
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
