EM78P417N/418N/419N
8-Bit Microprocessor with OTP ROM
E. Program Starts
ORG 0
; Initial address
JMP INITIAL
;
ORG 0x08
; Interrupt vector
;
;
;(User program section)
;
;
CLR RF
; To clear the ADIF bit
BS ADCON, ADRUN
; To start to execute the next AD conversion
if necessary
RETI
INITIAL:
MOV A,@0B00000001 ; To define P60 as an analog input
MOV AISR,A
MOV A,@0B00001000 ; To select P60 as an analog input channel, and
AD power on
MOV ADCON,A
; To define P60 as an input pin and set clock
rate at fosc/16
En_ADC:
MOV A, @0BXXXXXXX1 ; To define P50 as an input pin, and the others
IOW PORT6 ; are dependent on applications
MOV A, @0BXXXX1XXX ; Enable the ADWE wake-up function of ADC, “X”
by application
MOV RE,A
MOV A, @0BXXXX1XXX ; Enable the ADIE interrupt function of ADC,
“X” by application
IOW C_INT
ENI
; Enable the interrupt function
; Start to run the ADC
BS ADCON, ADRUN
; If the interrupt function is employed, the following three lines
may be ignored
POLLING:
JBC ADCON, ADRUN
JMP POLLING
; To check the ADRUN bit continuously;
; ADRUN bit will be reset as the AD conversion
is completed
;
;
;(User program section)
;
;
Product Specification (V1.0) 06.23.2005
• 49
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
