參數資料
型號： LM12458CIVF/NOPB
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 模擬信號調理
英文描述： SPECIALTY ANALOG CIRCUIT, PQFP44
封裝： PLASTIC, QFP-44
文件頁數： 19/36頁
文件大?。?/td> 1195K
代理商： LM12458CIVF/NOPB
2.0 Internal User-Programmable Registers (Continued)
Note 21: LM12454 (Refer toTable 2).
Note 22: LM12(H)458 only. Must be set to “0” for the LM12454.
A4
A3
A2
A1
A0
Purpose
Type
D7
D6
D5
D4
D3
D2
D1
D0
000
Instruction
RAM
(RAM
Pointer =
00)
R/W
V
IN (MUXOUT)
V
IN+ (MUXOUT+)
Pause
Loop
0to
0
111
000
R/W
Acquisition Time
Watch-
dog
8/12
Timer
Sync
0to
1
111
000
Instruction RAM
(RAM Pointer =
01)
R/W
Comparison Limit #1
0to
0
1
R/W
Don’t Care
>/<
Sign
000
R/W
Don’t Care
>/<
Sign
0to
1
111
000
Instruction
RAM
(RAM
Pointer =
10)
R/W
Comparison Limit #2
0to
0
111
000
R/W
Don’t Care
>/<
Sign
0to
1
111
1
0000
Configuration
Register
R/W
I/O Sel
Auto Zero
ec
Chan
Mask
Stand-
by
Full Cal
Auto-
Zero
Reset
Start
1
0001
R/W
Don’t Care
DIAG
Test =
0
RAM Pointer
1
0010
Interrupt
Enable
Register
R/W
INT7
INT6
INT5
INT4
INT3
INT2
INT1
INT0
1
0011
R/W
Number of Conversions in Conversion FIFO to
Generate INT2
Sequencer Address to
Generate INT1
1
0100
Interrupt
Status
Register
R
INST7
INST6
INST5
INST4
INST3
INST2
INST1
INST0
1
0101
R
Actual Number of Conversions Results in
Conversion FIFO
Address of Sequencer
Instruction being
Executed
1
0110
Timer
Register
R/W
Timer Preset: Low Byte
1
0111
R/W
Timer Preset: High Byte
1
1000
Conversion
FIFO
R
Conversion Data: LSBs
1
1001
R
Address or Sign
Sign
Conversion Data: MSBs
1
1010
Limit Status
Register
R
Limit #1 Status
1
1011
R
Limit #2 Status
FIGURE 14. LM12(H)454/8 Memory Map for 8-Bit Wide Data Bus (BW = “1” and Test Bit = “0”)
LM12454/LM12458/LM12H458
www.national.com
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相關代理商/技術參數
參數描述
LM12458CIVX 功能描述:模數轉換器 - ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
LM12458CIVX/NOPB 功能描述:模數轉換器 - ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
LM12458CMEL/883 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single-Ended Data Acquisition System
LM12458MEL/883 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single-Ended Data Acquisition System
LM12458MW/883 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Single-Ended Data Acquisition System
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