參數(shù)資料
型號(hào)： EVAL-AD7877EB
廠商： Analog Devices, Inc.
英文描述： Touch Screen Controller
中文描述： 觸摸屏控制器
文件頁數(shù)： 35/44頁
文件大?。?/td> 1002K
代理商： EVAL-AD7877EB
AD7877
DETAILED REGISTER DESCRIPTIONS
Register Name: Control Register 1
Write Address: 0001; Read Address: 00001; Default Value: 0x000; Type: Read/Write.
Table 16.
Read/
Write
Description
0
MODE0
R/W
LSB of ADC mode code
1
MODE1
R/W
MSB of ADC mode code
00 = No conversion
01 = Single conversion
10 = Conversion sequence (slave mode)
11 = Conversion sequence (master mode)
2
RD0
R/W
LSB of register read address. To read a register, its address must first be written to Control Register 1.
3
RD1
R/W
Bit 1 of register read address. To read a register, its address must first be written to Control Register 1.
4
RD2
R/W
Bit 2 of register read address. To read a register, its address must first be written to Control Register 1.
5
RD3
R/W
Bit 3 of register read address. To read a register, its address must first be written to Control Register 1.
6
RD4
R/W
MSB of register read address. To read a register, its address must first be written to Control Register 1.
7
CHADD0
R/W
LSB of ADC channel address
8
CHADD1
R/W
Bit 1 of ADC channel address
9
CHADD2
R/W
Bit 2 of ADC channel address
10
CHADD3
R/W
MSB of ADC channel address
0000 = X+ input (Y position)
0001 = Y+ input (X position)
0010 = Y (Z2) input (used for touch-pressure calculation)
0011 = Auxiliary Input 1 (AUX1)
0100 = Auxiliary Input 2 (AUX2)
0101 = Auxiliary Input 3 (AUX3)
0110 = Battery Monitor Input 1 (BAT1)
0111 = Battery Monitor Input 2 (BAT2)
1000 = Temperature Measurement 1 (used for single conversion)
1001 = Temperature Measurement 2 (used for differential measurement method)
1010 = X+ (Z1) input (used for touch-pressure calculation)
11
SER/DFR
R/W
Selects normal (single-ended) or ratiometric (differential) conversion
0 = Ratiometric (differential)
1 = Normal (single-ended)
Rev. A | Page 35 of 44
Bit
Name
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EVAL-AD7887CB4 制造商:AD 制造商全稱:Analog Devices 功能描述:2.7 V to 5.25 V, Micropower, 2-Channel, 125 kSPS, 12-Bit ADC in 8-Lead MSOP
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