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LTC1291 Folha de dados(PDF) 11 Page - Linear Technology

Nome de Peças LTC1291
Descrição Electrónicos  Single Chip 12-Bit Data Acquisition System
PDF  20 Pages
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Fabricante Electrônico  LINER [Linear Technology]
Página de início  http://www.linear.com
Logo LINER - Linear Technology

LTC1291 Folha de dados(HTML) 11 Page - Linear Technology

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11
LTC1291
Timing Diagram for Interface to the MC68HC11
LABEL MNEMONIC
OPERAND
COMMENTS
LTC1291 AI07
DOUT FROM LTC1291 STORED IN MC68HC11 RAM
B2
B1
B0
B3
B4
B6
B7
B5
0
0
LSB
MSB
#62
#63
0
0
B11
B10
B9
B8
CLK
DOUT
CS
ANALOG
INPUTS
D0
SCK
MC68HC11
DIN
MISO
LTC1291
CH0
CH1
BYTE 1
BYTE 2
MOSI
Hardware and Software Interface to Motorola MC68HC11
MC68HC11 CODE
In this example the DIN word configures the input MUX for
a single-ended input to be applied to CH0. The conversion
result is output MSB-first.
CS
CLK
DOUT
MPU
RECEIVED
WORD
LTC1291 AI06
SGL/
DIFF
START
MSBF
PS
B3
B7
B6
B5
B4
B2
B0
B1
B11
B10
B9
B8
DIN
MPU
TRANSMIT
WORD
BYTE 3 (DUMMY)
BYTE 2
0
00
SGL/
DIFF
1
BYTE 1
X
ODD/
EVEN
MSBF
PS
X
X
X
X
00
0
X
X
X
XX
X
X
X
BYTE 3
BYTE 2
BYTE 1
B11
?
?
?
0
B10
B8
B9
B7
B6
B4
B5
B3
B2
B0
B1
DON'T CARE
ODD/
EVEN
?
??
?
?
??
?
LABEL MNEMONIC
OPERAND
COMMENTS
LDAA
#$50
CONFIGURATION DATA FOR SPCR
STAA
$1028
LOAD DATA INTO SPCR ($1028)
LDAA
#$1B
CONFIG. DATA FOR PORT D DDR
STAA
$1009
LOAD DATA INTO PORT D DDR
LDAA
#$03
LOAD DIN WORD INTO ACC A
STAA
$50
LOAD DIN DATA INTO $50
LDAA
#$60
LOAD DIN WORD INTO ACC A
STAA
$51
LOAD DIN DATA INTO $51
LDAA
#$00
LOAD DUMMY DIN WORD INTO
ACC A
STAA
$52
LOAD DUMMY DIN DATA INTO $52
LDX
#$1000
LOAD INDEX REGISTER X WITH
$1000
LOOP
BCLR
$08,X,#$01
D0 GOES LOW (CS GOES LOW)
LDAA
$50
LOAD DIN INTO ACC A FROM $50
STAA
$102A
LOAD DIN INTO SPI, START SCK
S
APPLICATI
I FOR ATIO



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