Preliminary
SN8P1702A/SN8P1703A
8-bit micro-controller build-in 12-bit ADC
ꢁExample: TC0 interrupt service routine without auto-reload function. (TC0_Counter=8-bit)
ORG
JMP
8
; Interrupt vector
INT_SERVICE
INT_SERVICE:
B0XCH
B0MOV
B0MOV
A, ACCBUF
A, PFLAG
PFLAGBUF, A
; Store ACC value.
B0BTS1
JMP
FTC0IRQ
EXIT_INT
; Check TC0IRQ
; TC0IRQ = 0, exit interrupt vector
B0BCLR
MOV
B0MOV
.
FTC0IRQ
A,#74H
TC0C,A
.
; Reset TC0IRQ
; Reload TC0C
; TC0 interrupt service routine
.
.
JMP
EXIT_INT
; End of TC0 interrupt service routine and exit interrupt
vector
.
.
.
.
EXIT_INT:
B0MOV
B0MOV
B0XCH
A, PFLAGBUF
PFLAG, A
A, ACCBUF
; Restore ACC value.
; Exit interrupt vector
RETI
ꢁExample: TC0 interrupt service routine with auto-reload. (TC0_Counter=8-bit)
ORG
JMP
8
; Interrupt vector
INT_SERVICE
INT_SERVICE:
B0XCH
B0MOV
B0MOV
A, ACCBUF
A, PFLAG
PFLAGBUF, A
; Store ACC value.
B0BTS1
JMP
FTC0IRQ
EXIT_INT
; Check TC0IRQ
; TC0IRQ = 0, exit interrupt vector
B0BCLR
FTC0IRQ
; Reset TC0IRQ
.
.
; TC0 interrupt service routine
.
.
JMP
EXIT_INT
; End of TC0 interrupt service routine and exit interrupt
vector
.
.
.
.
EXIT_INT:
B0MOV
B0MOV
B0XCH
A, PFLAGBUF
PFLAG, A
A, ACCBUF
; Restore ACC value.
; Exit interrupt vector
RETI
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Revision 0.5
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