參數(shù)資料
型號： AD7877WACPZ-REEL7
廠商： Analog Devices Inc
文件頁數(shù)： 30/45頁
文件大?。?/td> 0K
描述： IC CTRLR TOUCH SCREEN 32LFCSP
標(biāo)準(zhǔn)包裝： 1
類型： 電阻
觸摸面板接口： 4 線
輸入數(shù)/鍵： 1 TSC
分辨率（位）： 12 b
評估套件： 可供
數(shù)據(jù)接口： 串行，SPI?
數(shù)據(jù)速率/采樣率 (SPS，BPS)： 125k
電壓基準(zhǔn)： 外部，內(nèi)部
電源電壓： 2.7 V ~ 5.25 V
電流 - 電源： 1µA
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 32-VFQFN 裸露焊盤，CSP
供應(yīng)商設(shè)備封裝： 32-LFCSP-VQ（5x5）
包裝： 標(biāo)準(zhǔn)包裝
其它名稱： AD7877WACPZ-REEL7DKR
Data Sheet
AD7877
Rev. D | Page 35 of 44
DETAILED REGISTER DESCRIPTIONS
Register Name: Control Register 1
Write Address: 0001
Read Address:
00001
Default Value:
0x000
Type:
Read/write
Table 16.
Bit
Name
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)
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