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AN420 Datasheet(PDF) 13 Page - STMicroelectronics

No. de pieza AN420
Descripción Electrónicos  Occasionally the analog signal provided by external sensors require
PDF  16 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN420 Datasheet(HTML) 13 Page - STMicroelectronics

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AN420
Application example
Doc ID 2078 Rev 2
13/15
jrs c2,Hres,c2conv
jrs c3,Hres,c3conv
c4conv
ldi Hres,3
ld Lres,a
ld a,drcs
res VN1,a
ld drcs,a
ld drc,a
;VN1=VN2=VN3=0
jp convout
c1conv
pi a,0ffh
jrnz c1c1
lr Hres
ld Lres,a
convout
d a,w
reti
c1c1
ld a,drcs
set VN3,a
ld drcs,a
ld drc,a
;VN1=VN2=0, VN3=1
set 5,adcr
;start conversion
res c1,Hres
set c2,Hres
jp convout
;exit interrupt
c2conv
cpi a,0ffh
jrnz c2c1
ldi Hres,1
ld Lres,a
jp convout
c2c1
ld a,drcs
res VN3,a
set VN2,a
ld drcs,a
ld drc,a
;VN1=VN3=0, VN2=1
set 5,adcr
;start conversion
res c2,Hres
set c3,Hres
jp convout
;exit interrupt
c3conv
cpi a,0ffh
jrnz c3c1



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