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ML2280CIP 数据表(PDF) 14 Page - Micro Linear Corporation

部件名 ML2280CIP
功能描述  Serial I/O 8-Bit A/D Converters
PDF  20 Pages
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制造商  MICRO-LINEAR [Micro Linear Corporation]
网页  http://www.microlinear.com
标志 MICRO-LINEAR - Micro Linear Corporation

ML2280CIP 数据表(HTML) 14 Page - Micro Linear Corporation

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ML2280, ML2283
14
CH0
ML2283
8051
P13
P12
P11
P10
CS
CLK
DI
DO
CH3
MNEMONIC
INSTRUCTION
START:
ANL
P1, #0F7H
;SELECT A/D (CS = 0)
MOV
B, #5
;BIT COUNTER
¨ 5
MOV
A, #ADDR
;A
¨ MUX BIT
LOOP 1: RRC
A
;CY
¨ ADDRESS BIT
JC
ONE
;TEST BIT
;BIT = 0
ZERO:
ANL
P1, #0FEH
;DI
¨ 0
SJMP
CONT
;CONTINUE
;BIT = 1
ONE:
ORL
P1, #1
;D1
¨ 1
CONT:
ACALL
PULSE
;PULSE SK 0
Æ 1 Æ 0
DJNZ
B, LOOP 1
;CONTINUE UNTIL DONE
ACALL
PULSE
;EXTRA CLOCK FOR SYNC
MOV
B, #8
;BIT COUNTER
¨ 8
LOOP 2: ACALL
PULSE
;PULSE SK 0
Æ 1 Æ 0
MOV
A, P1
;CY
¨ DO
RRC
A
RRC
A
MOV
A, C
;A
¨ RESULT
RLC
A
;A(0) BIT
¨ AND SHIFT
MOV
C, A
;C
¨ RESULT
DJNZ
B, LOOP 2
;CONTINUE UNTIL DONE
RETI
;PULSE SUBROUTINE
PULSE:
ORL
P1, #04
;SK
¨ 1
NOP
;DELAY
ANL
P1, #0FBH
;SK
¨ 0
RET
8051 Interface and Controlling Software
APPLICATIONS



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