参数资料
| 型号： | AD7710AQ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 18/32页 |
| 文件大小： | 0K |
| 描述： | IC ADC 24BIT DIFF INP 24-CDIP |
| 标准包装： | 15 |
| 位数： | 24 |
| 采样率（每秒）： | 1.03k |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 45mW |
| 电压电源： | 模拟和数字，双 ± |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 24-CDIP（0.300"，7.62mm） |
| 供应商设备封装： | 24-CDIP |
| 包装： | 管件 |
| 输入数目和类型： | 2 个差分，单极；2 个差分，双极 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页当前第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页
AD7710
REV. G
–25–
REVERSE
ORDER OF
BITS
3
START
WRITE DATA FROM
ACCUMULATOR TO
SERIAL BUFFER
BRING
TFS AND A0 LOW
LOAD DATA FROM
ADDRESS TO
ACCUMULATOR
CONFIGURE AND
INITIALIZE
C/ P
SERIAL PORT
BRING
RFS, TFS, AND A0
HIGH
BRING
TFS AND A0 HIGH
END
Figure 16. Flowchart for Single Write Operation
to the AD7710
AD7710 to 8XC51 Interface
Figure 17 shows an interface between the AD7710 and the 8XC51
microcontroller. The AD7710 is configured for external clock-
ing mode, while the 8XC51 is configured in its Mode 0 serial
interface mode. The
DRDY line from the AD7710 is connected
to the Port P1.2 input of the 8XC51, so the
DRDY line is polled
by the 8XC51. The
DRDY line can be connected to the INT1
input of the 8XC51 if an interrupt driven system is preferred.
P1.0
P3.0
P3.1
P1.1
P1.2
P1.3
8XC51
AD7710
SDATA
A0
RFS
TFS
MODE
DRDY
SYNC
SCLK
DVDD
Figure 17. AD7710 to 8XC51 Interface
Table VII shows some typical 8XC51 code used for a single 24-bit
read from the output register of the AD7710. Table VIII shows
some typical code for a single write operation to the control register
of the AD7710. The 8XC51 outputs the LSB first in a write
operation, while the AD7710 expects the MSB first so the data to
be transmitted has to be rearranged before being written to the
output serial register. Similarly, the AD7710 outputs the MSB first
during a read operation, while the 8XC51 expects the LSB first.
Therefore, the data that is read into the serial buffer needs to be
rearranged before the correct data-word from the AD7710 is
available in the accumulator.
Table VII. 8XC51 Code for Reading from the AD7710
MOV SCON,#00010001B;
Configure 8051 for MODE 0
MOV IE,#00010000B;
Disable All Interrupts
SETB 90H;
Set P1.0, Used as
RFS
SETB 91H;
Set P1.1, Used as
TFS
SETB 93H;
Set P1.3, Used as A0
MOV R1,#003H;
Sets Number of Bytes to Be Read in
a Read Operation
MOV R0,#030H;
Start Address for Where Bytes Will
Be Loaded
MOV R6,#004H;
Use P1.2 as
DRDY
WAIT:
NOP;
MOV A,P1;
Read Port 1
ANL A,R6;
Mask Out All Bits Except
DRDY
JZ READ;
If Zero Read
SJMP WAIT;
Otherwise Keep Polling
READ:
CLR 90H;
Bring
RFS Low
CLR 98H;
Clear Receive Flag
POLL:
JB 98H, READ1
Tests Receive Interrupt Flag
SJMP POLL
READ 1:
MOV A,SBUF;
Read Buffer
RLC A;
Rearrange Data
MOV B.0,C;
Reverse Order of Bits
RLC A; MOV B.1,C; RLC A; MOV B.2,C;
RLC A; MOV B.3,C; RLC A; MOV B.4,C;
RLC A; MOV B.5,C; RLC A; MOV B.6,C;
RLC A; MOV B.7,C;
MOV A,B;
MOV @R0,A;
Write Data to Memory
INC R0;
Increment Memory Location
DEC R1
Decrement Byte Counter
MOV A,R1
JZ END
Jump if Zero
JMP WAIT
Fetch Next Byte
END:
SETB 90H
Bring
RFS High
FIN:
SJMP FIN
相关PDF资料 |
PDF描述 |
|---|---|
| AD7711AAR | IC ADC 24BIT RTD I SOURCE 24SOIC |
| AD7711AN | IC ADC 24BIT RTD I SOURCE 24-DIP |
| AD7712AR | IC ADC SIGNAL COND LC2MOS 24SOIC |
| AD7713AN | IC ADC 24BIT SIGMA-DELTA 24-DIP |
| AD7714ARS-3 | IC ADC 24BIT SIGMA-DELTA 28SSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7710AR | 功能描述:IC ADC 24BIT DIFF INP 24-SOIC RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| AD7710AR-REEL | 功能描述:IC ADC 24BIT DIFF INP 24-SOIC RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| AD7710AR-REEL7 | 功能描述:IC ADC 24BIT DIFF INP 24-SOIC RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| AD7710ARZ | 功能描述:IC ADC 24BIT DIFF INP 24-SOIC RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| AD7710ARZ | 制造商:Analog Devices 功能描述:IC ADC 24BIT 1.02KSPS SOIC-24 |
发布紧急采购，3分钟左右您将得到回复。