參數(shù)資料
型號: LTC1296DISW#PBF
廠商: Linear Technology
文件頁數(shù): 8/28頁
文件大?。?/td> 0K
描述: IC DATA ACQ SYSTEM 12BIT 20-SOIC
標準包裝: 38
類型: 數(shù)據(jù)采集系統(tǒng)(DAS),ADC
分辨率(位): 12 b
采樣率(每秒): 46.5k
數(shù)據(jù)接口: 串行,并聯(lián)
電壓電源: 雙 ±
電源電壓: ±5V,5V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-SOIC(0.295",7.50mm 寬)
供應商設備封裝: 20-SOIC
包裝: 管件
16
LTC1293/LTC1294/LTC1296
129346fs
U
S
A
O
PPLICATI
WU
U
I FOR ATIO
STAA
$102A
LOAD DIN INTO SPI, START SCK
WAIT2 LDAA
$1029
CHECK SPI STATUS REG
BPL
WAIT2
CHECK IF TRANSFER IS DONE
LDAA
$102A
LOAD LTC1294 MSBs INTO ACC A
STAA
$62
STORE MSBs IN $62
LDAA
$52
LOAD DUMMY DIN INTO ACC A FROM
$52
STAA
$102A
LOAD DUMMY DIN INTO SPI, START
SCK
WAIT3 LDAA
$1029
CHECK SPI STATUS REG
BPL
WAIT3
CHECK IF TRANSFER IS DONE
BSET
$08,X,$01 D0 GOES HIGH (CS GOES HIGH)
LDAA
$102A
LOAD LTC1294 LSBs IN ACC
STAA
$63
STORE LSBs IN $63
JMP
LOOP
START NEXT CONVERSION
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
#$10
LOAD DIN WORD INTO ACC A
STAA
$50
LOAD DIN DATA INTO $50
LDAA
#$E0
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
LDAA
$1029
CHECK SPI STATUS REG
WAIT1 BPL
WAIT1
CHECK IF TRANSFER IS DONE
LDAA
$51
LOAD DIN INTO ACC A FROM $51
MC68HC11 CODE
LABEL MNEMONIC OPERAND COMMENTS
Hardware and Software Interface to Intel 8051
CS
CLK
DATA
(DIN/DOUT)
LTC1293 TD02
1
23
46
57
8
PS BIT LATCHED
INTO LTC1294
8051 P1.2 OUTPUT DATA
TO LTC1294
8051 P1.2 RECONFIGURED
AS INPUT AFTER THE 8TH RISING
CLK BEFORE THE 8TH FALLING CLK
LTC1294 SEND A/D RESULT
BACK TO 8051 P1.2
LTC1294 TAKES CONTROL OF DATA
LINE ON 8TH FALLING CLK
START
B11
SGL/
DIFF
ODD/
SIGN
SEL
1
SEL
0
UNI
MSB
PS
B10
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
Hardware and Software Interface to Intel 8051
LTC1293 TD02a
DOUT FROM LTC1294 STORED IN 8051 RAM
00
0
B0
B2
B3
B1
B10
B11
LSB
MSB
R2
R3
B9
B8
B7
B6
B5
B4
CLK
DOUT
CS
ANALOG
INPUTS
P1.4
P1.3
8051
DIN
P1.2
MUX ADDRESS
A/D RESULT
LTC1294
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