參數(shù)資料
型號: LTC1291BCJ8
廠商: LINEAR TECHNOLOGY CORP
元件分類: ADC
英文描述: 2-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP8
封裝: 0.300 INCH, CERAMIC, DIP-8
文件頁數(shù): 3/20頁
文件大?。?/td> 329K
代理商: LTC1291BCJ8
11
LTC1291
1291fa
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
LSB
MSB
#62
#63
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
00
0
X
XX
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
U
S
A
O
PPLICATI
WU
U
I FOR ATIO
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