参数资料
型号: AD7877ACPZ-REEL
厂商: Analog Devices Inc
文件页数: 39/45页
文件大小: 0K
描述: IC ADC 12BIT TOUCHSCREEN 32LFCSP
标准包装: 5,000
类型: 电阻
触摸面板接口: 4 线
输入数/键: 1 TSC
分辨率(位): 12 b
评估套件: 可供
数据接口: 串行,SPI?
数据速率/采样率 (SPS,BPS): 125k
电压基准: 外部,内部
电源电压: 2.7 V ~ 5.25 V
电流 - 电源: 1µA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 32-VFQFN 裸露焊盘,CSP
供应商设备封装: 32-LFCSP-VQ
包装: 带卷 (TR)
配用: EVAL-AD7877EBZ-ND - BOARD EVALUATION FOR AD7877
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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