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参数资料
| 型号： | LTC1290CIN#TR |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | ADC |
| 英文描述： | 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP20 |
| 封装： | 0.300 INCH, PLASTIC, DIP-20 |
| 文件页数： | 21/32页 |
| 文件大小： | 613K |
| 代理商： | LTC1290CIN#TR |
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LTC1290
1290fe
U
S
A
O
PPLICATI
TYPICAL
SNEAK-A-BIT Code for the LTC1290 Using the MC68HC05C4
MNEMONIC
DESCRIPTION
READ –/+:
LDA
#$3F
Load DIN Word for LTC1290 into ACC
JSR
TRANSFER
Read LTC1290 Routine
LDA
$60
Load MSBs from LTC1290 into ACC
STA
$71
Store MSBs in $71
LDA
$61
Load LSBs from LTC1290 into ACC
STA
$72
Store LSBs in $72
RTS
Return
READ +/–:
LDA
#$7F
Load DIN Word for LTC1290 into ACC
JSR
TRANSFER
Read LTC1290 Routine
LDA
$60
Load MSBs from LTC1290 into ACC
STA
$73
Store MSBs in $73
LDA
$61
Load LSBs from LTC1290 into ACC
STA
$74
Store LSBs in $74
RTS
Return
TRANSFER: BCLR 0,$02
CS Goes Low
STA
$0C
Load DIN into SPI, Start Transfer
LOOP 1:
TST
$0B
Test Status of SPIF
BPL
LOOP 1
Loop to Previous Instruction if Not Done
LDA
$0C
Load Contents of SPI Data Reg. into ACC
STA
$0C
Start Next Cycle
STA
$60
Store MSBs in $60
LOOP 2:
TST
$0B
Test Status of SPIF
BPL
LOOP 2
Loop to Previous Instruction if Not Done
BSET 0,$02
CS Goes High
LDA
$0C
Load Contents of SPI Data Reg. into ACC
STA
$61
Store LSBs in $61
RTS
Return
CHK SIGN: LDA
$73
Load MSBs of
± Read into ACC
ORA $74
Or ACC (MSBs) with LSBs of
± Read
BEQ
MINUS
If Result is 0 Go to Minus
CLC
Clear Carry
ROR $73
Rotate Right $73 Through Carry
ROR $74
Rotate Right $74 Through Carry
LDA
$73
Load MSBs of
± Read into ACC
STA
$77
Store MSBs in RAM Location $77
LDA
$74
Load LSBs of
± Read into ACC
STA
$87
Store LSBs in RAM Location $87
BRA END
Go to End of Routine
MINUS:
CLC
Clear Carry
ROR $71
Shift MSBs of
± Read Right
ROR $72
Shift LSBs of
± Read Right
COM $71
1’s Complement of MSBs
COM $72
1’s Complement of LSBs
LDA
$72
Load LSBs into ACC
ADD #$01
Add 1 to LSBs
STA
$72
Store ACC in $72
CLRA
Clear ACC
ADC $71
Add with Carry to MSBs. Result in ACC
STA
$71
Store ACC in $71
STA
$77
Store MSBs in RAM Location $77
LDA
$72
Load LSBs in ACC
STA
$87
Store LSBs in RAM Location $87
END:
RTS
Return
SNEAK-A-BIT Code
DOUT from LTC1290 in MC68HC05C4 RAM
DIN Words for LTC1290
Sign
LSB
MUX Addr.
UNI
MSBF
Word
Length
DIN1
0
11
DIN2
0
1
11
DIN3
0
11
(ODD/SIGN)
1290 TA06
LOCATION $77
B12
B11
B10
B9
B8
B7
B6
B5
LOCATION $87
B4
B3
B2
B1
B0
Filled with 0s
SNEAK-A-BIT Code for the LTC1290 Using the MC68HC05C4
MNEMONIC
DESCRIPTION
LDA
#$50
Configuration Data for SPCR
STA
$0A
Load Configuration Data into $0A
LDA
#$FF
Configuration Data for Port C DDR
STA
$06
Load Configuration Data into Port C DDR
BSET
0,$02
Make Sure CS is High
JSR
READ –/+
Dummy Read Configures LTC1290
for next read
JSR
READ –/+
Read CH6 with Respect to CH7
JSR
READ –/+
Read CH7 with Respect to CH6
JSR
CHK Sign
Determines which Reading has Valid Data,
Converts to 2’s Complement and
Stores in RAM
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1290CISW | 功能描述:IC DATA ACQ SYS 12BIT 20-SOIC RoHS:否 类别:集成电路 (IC) >> 数据采集 - ADCs/DAC - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:数据采集系统（DAS） 分辨率（位）:16 b 采样率（每秒）:21.94k 数据接口:MICROWIRE?，QSPI?，串行，SPI? 电压电源:模拟和数字 电源电压:1.8 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| LTC1290CISW#PBF | 功能描述:IC DATA ACQ SYS 12BIT 20-SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - ADCs/DAC - 专用型 系列:- 产品培训模块:Data Converter Basics 标准包装:1 系列:- 类型:电机控制 分辨率（位）:12 b 采样率（每秒）:1M 数据接口:串行，并联 电压电源:单电源 电源电压:2.7 V ~ 3.6 V，4.5 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:100-TQFP 供应商设备封装:100-TQFP（14x14） 包装:剪切带 (CT) 其它名称:296-18373-1 |
| LTC1290CISW#PBF | 制造商:Linear Technology 功能描述:ADC, 8CH, 12BIT, 50KSPS, SOIC-20 |
| LTC1290CISW#TR | 功能描述:IC DATA ACQ SYS 12BIT 5V 20SOIC RoHS:否 类别:集成电路 (IC) >> 数据采集 - ADCs/DAC - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:数据采集系统（DAS） 分辨率（位）:16 b 采样率（每秒）:21.94k 数据接口:MICROWIRE?，QSPI?，串行，SPI? 电压电源:模拟和数字 电源电压:1.8 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| LTC1290CISW#TRPBF | 功能描述:IC DATA ACQ SYS 12BIT 20-SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - ADCs/DAC - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:数据采集系统（DAS） 分辨率（位）:16 b 采样率（每秒）:21.94k 数据接口:MICROWIRE?，QSPI?，串行，SPI? 电压电源:模拟和数字 电源电压:1.8 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
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