ML2280CIP View Datasheet(PDF) - Micro Linear Corporation
Part Name
Description
MFG CO.
'ML2280CIP' PDF : 20 Pages View PDF
ML2280, ML2283
APPLICATIONS
CH0
CS
CLK
ML2283
DI
CH3
DO
P13
P12
8051
P11
P10
8051 Interface and Controlling Software
MNEMONIC
INSTRUCTION
START: ANL
MOV
MOV
P1, #0F7H
B, #5
A, #ADDR
;SELECT A/D (CS = 0)
;BIT COUNTER ¨ 5
;A ¨ MUX BIT
LOOP 1: RRC
JC
A
ONE
;CY ¨ ADDRESS BIT
;TEST BIT
;BIT = 0
ZERO: ANL
SJMP
P1, #0FEH
CONT
;DI ¨ 0
;CONTINUE
;BIT = 1
ONE: ORL
P1, #1
;D1 ¨ 1
CONT:
ACALL
DJNZ
ACALL
MOV
PULSE
B, LOOP 1
PULSE
B, #8
;PULSE SK 0 Æ 1 Æ 0
;CONTINUE UNTIL DONE
;EXTRA CLOCK FOR SYNC
;BIT COUNTER ¨ 8
LOOP 2: ACALL
MOV
RRC
RRC
MOV
RLC
MOV
DJNZ
PULSE
A, P1
A
A
A, C
A
C, A
B, LOOP 2
;PULSE SK 0 Æ 1 Æ 0
;CY ¨ DO
;A ¨ RESULT
;A(0) BIT ¨ AND SHIFT
;C ¨ RESULT
;CONTINUE UNTIL DONE
RETI
;PULSE SUBROUTINE
PULSE:
ORL
NOP
ANL
RET
P1, #04
P1, #0FBH
;SK ¨ 1
;DELAY
;SK ¨ 0
14
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