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参数资料
| 型号： | ADC0844CCJ |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | ADC |
| 英文描述： | 8-Bit uP Compatible A/D Converters with Multiplexer Options |
| 中文描述： | 4-CH 8-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, CDIP20 |
| 封装： | 0.300 INCH, CERAMIC, DIP-20 |
| 文件页数： | 17/20页 |
| 文件大小： | 467K |
| 代理商： | ADC0844CCJ |
Applications Information
(Continued)
SAMPLE PROGRAM FOR ADC0844— INS8039 INTERFACE
CONVERTING TWO RATIOMETRIC, DIFFERENTIAL SIGNALS
(Continued)
0054
0056
0057
0059
005A
32 53
81
89 01
A0
83
JB1
MOVX
ORL
MOV
RET
LOOP
A,
@
R1
P1,&01H
@
R0,A
;IF INTR = 1 GOTO LOOP
;IF INTR = 0 INPUT A/D DATA
;CLEAR THE A/D CHIP SELECT
;STORE THE A/D DATA
;RETURN TO MAIN PROGRAM
SAMPLE PROGRAM FOR ADC0848— NSC800 INTERFACE
0008
000F
001F
3C00
NCONV
DEL
CS
ADDTA
EQU
EQU
EQU
EQU
16
15
1FH
003CH
;DELAY 50 μsec CONVERSION
;THE BOARD ADDRESS
;START OF RAM FOR A/D
;DATA
;MUX DATA
0000'
0004'
0008'
000A'
000C'
000F'
0012'
08 09 0A 0B
0C 0D 0E 0F
0E 1F
06 16
21 0000'
11 003C
ED A3
MUXDTA:
DB
DB
LD
LD
LD
LD
OUTI
08H,09H,0AH,0BH
0CH,0DH,0EH,0FH
C,CS
B,NCONV
HL,MUXDTA
DE,ADDTA
START:
STCONV:
;LOAD A/D’S MUX DATA
;AND START A CONVERSION
;HL=RAM ADDRESS FOR THE
;A/D DATA
0014'
EB
EX
DE,HL
0015'
0017'
0018'
001B'
3E 0F
3D
C2 0013'
ED A2
LD
DEC
JP
INI
A,DEL
A
NZ,WAIT
WAIT:
;WAIT 50 μsec FOR THE
;CONVERSION TO FINISH
;STORE THE A/D’S DATA
;CONVERTED ALL INPUTS
001D'
001E'
EB
C2 000E'
EX
JP
DE,HL
NZ,STCONV
;IF NOT GOTO STCONV
END
Note 14:
This routine sequentially programs the MUX data latch in the signal-ended mode. For CH1-CH8 a conversion is started, then a 50 μs wait for the A/D to
complete a conversion and the data is stored at address ADDTA for CH1, ADDTA + 1 for CH2, etc.
I/O Interface to NSC800
DS005016-28
www.national.com
17
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| ADC0848BCN | 8-Bit uP Compatible A/D Converters with Multiplexer Options |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADC0844CCJ/A+ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog-to-Digital Converter， 8-Bit |
| ADC0844CCN | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| ADC0844CCN | 制造商:Texas Instruments 功能描述:IC 8BIT ADC DIP20 844 |
| ADC0844CCN/A+ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog-to-Digital Converter， 8-Bit |
| ADC0844CCN/B+ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog-to-Digital Converter， 8-Bit |
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