參數(shù)資料
型號(hào): AD7877ACPZ-500RL7
廠(chǎng)商: Analog Devices Inc
文件頁(yè)數(shù): 39/45頁(yè)
文件大?。?/td> 0K
描述: IC ADC 12BIT TOUCHSCREEN 32LFCSP
標(biāo)準(zhǔn)包裝: 1
類(lèi)型: 電阻
觸摸面板接口: 4 線(xiàn)
輸入數(shù)/鍵: 1 TSC
分辨率(位): 12 b
評(píng)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(lèi)型: 表面貼裝
封裝/外殼: 32-VFQFN 裸露焊盤(pán),CSP
供應(yīng)商設(shè)備封裝: 32-LFCSP-VQ
包裝: 標(biāo)準(zhǔn)包裝
其它名稱(chēng): AD7877ACPZ-500RL7DKR
Data Sheet
AD7877
Rev. D | Page 43 of 44
Register Name: GPIO Control Register 2
Write Address: [1111] 0001
Read Address:
11100
Default Value:
0x000
Type:
Read/write
Table 23.
Bit
Name
Read/Write
Description
0
GPIO4_ALEN
R/W
If this bit is 1, GPIO4 is an interrupt source for the ALERT output; clearing this bit masks out GPIO3
as an interrupt source for the ALERT output
1
GPIO4_DIR
R/W
This bit sets the direction of GPIO4
0 = output
1 = input
2
GPIO4_POL
R/W
This bit determines if GPIO4 is active high or low
0 = active low
1 = active high
3
Not Used
This bit is not used
4
GPIO3_ALEN
R/W
If this bit is 1, GPIO3 is an interrupt source for the ALERT output; clearing this bit masks out GPIO4
as an interrupt source for the ALERT output
5
GPIO3_DIR
R/W
This bit sets the direction of GPIO3
0 = output
1 = input
6
GPIO3_POL
R/W
This bit determines if GPIO3 is active high or low
0 = active low
1 = active high
7
GPIO3_EN
R/W
This bit selects the function of AUX3/GPIO3
0 = AUX3
1 = GPIO3
Register Name: GPIO Data Register
Write Address: [1111] 0010
Read Address:
11101
Default Value:
0x000
Type:
Read/write
Table 24.
Bit
Name
Read/Write
Description
0
Not used
This bit is not used
1
Not used
This bit is not used
2
Not used
This bit is not used
3
Not used
This bit is not used
4
GPIO4_DAT
R/W
GPIO4 data bit
5
GPIO3_DAT
R/W
GPIO3 data bit
6
GPIO2_DAT
R/W
GPIO2 data bit
7
GPIO1_DAT
R/W
GPIO1 data bit
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