UPD17073 NEC, UPD17073 Datasheet - Page 111
UPD17073
Manufacturer Part Number
UPD17073
Description
4-BIT SINGLE-CHIP MICROCONTROLLER WITH HARDWARE FOR DIGITAL TUNING SYSTEM
Manufacturer
NEC
Datasheet
1.UPD17073.pdf
(226 pages)
- Current page: 111 of 226
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13.8 Status at Reset
13.8.1 At power-ON reset
13.8.2 On execution of clock stop instruction
13.8.3 At CE reset
(3) Program example of binary search
START:
END:
The P1A2/AD0 and P1A3/AD1 pins are set in the general-purpose input port mode, and internally pulled down.
The P1A2/AD0 and P1A3/AD1 pins are set in the general-purpose input port mode.
The previous status of the pull-down resistor is retained.
The P1A2/AD0 and P1A3/AD1 pins are set in the general-purpose input port mode.
The previous status of the pull-down resistor is retained.
BANK1
INITFLG
INITFLG
INITFLG
SET1
NOP
NOP
SKF1
SET1
CLR1
SET1
NOP
NOP
SKF1
SET1
CLR1
SET1
NOP
NOP
SKF1
SET1
CLR1
SET1
NOP
NOP
SKF1
SET1
NOT ADCCH1, ADCCH0
P1APLD2
NOT ADCRFSEL3, ADCRFSEL2, ADCRFSEL1, ADRFSEL0
ADCSTRT
ADCCMP
ADCRFSEL3
ADCRFSEL2
ADCSTRT
ADCCMP
ADCRFSEL2
ADCRFSEL1
ADCSTRT
ADCCMP
ADCRFSEL1
ADCRFSEL0
ADCSTRT
ADCCMP
ADCRFSEL0
; Selects AD0 pin
; Sets pull-down resistor of AD0 pin OFF
; Sets compare voltage to 7.5/16 V
; A/D converter starts operating.
; 2 wait
;
; Detects ADCCMP
; If 0, adds 7.5/16 V
; subtracts 3.5/16 V
; A/D converter starts operating.
; 2 wait
;
; Detects ADCCMP
; If 0, adds 3.5/16 V
; subtracts 1.5/16 V
; A/D converter starts operating.
; 2 wait
;
; Detects ADCCMP
; If 0, adds 1.5/16 V
; subtracts 0.5/16 V
; A/D converter starts operating.
; 2 wait
;
; Detects ADCCMP
; If 0, adds 0.5/16 V
PD17072,17073
DD
DD
DD
DD
DD
DD
DD
and
and
and
DD
111
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