参数资料
型号: AD7147PACPZ-RL
厂商: Analog Devices Inc
文件页数: 26/73页
文件大小: 0K
描述: IC CAP-TO-DGTL CONV PROG 24LFCSP
标准包装: 5,000
系列: CapTouch™
类型: 电容数字转换器
分辨率(位): 16 b
采样率(每秒): 250k
数据接口: 串行,SPI?
电压电源: 单电源
电源电压: 2.6 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-VFQFN 裸露焊盘,CSP
供应商设备封装: 24-LFCSP-VQ(4x4)
包装: 带卷 (TR)
Data Sheet
AD7147
Rev. D | Page 31 of 72
GPIO INT OUTPUT CONTROL
The INT output signal can be controlled by the GPIO pin when
the GPIO is configured as an input. The GPIO is con-figured as
an input by setting the GPIO_SETUP bits in the interrupt con-
figuration register to 01. See the
section for more information on configuring the GPIO.
Enable the GPIO interrupt by setting the GPIO_INT_ENABLE
bit in Register 0x007 to 1, or disable the GPIO interrupt by
clearing this bit to 0. The GPIO status bit in the conversion-
complete interrupt status register reflects the status of the GPIO
interrupt. This bit is set to 1 when the GPIO has triggered INT.
The bit is cleared upon reading the GPIO_INT_STATUS bit if the
condition that caused the interrupt is no longer present.
The GPIO interrupt can be set to trigger on a rising edge, falling
edge, high level, or low level at the GPIO input pin. Table 15 shows
how the settings of the GPIO_INPUT_CONFIG bits in the inter-
rupt enable (STAGE_LOW_INT_ENABLE) register affect the
behavior of INT.
Figure 43 to Figure 46 show how the interrupt output is cleared
upon a read from the GPIO_INT_STATUS bit.
GPIO
INPUT
INT
OUTPUT
SERIAL
READBACK
GPIO
INPUT
INT
OUTPUT
1
1READ GPIO_INT_STATUS BIT TO RESET INT OUTPUT.
GPIO INPUT HIGH WHEN REGISTER IS READ BACK
GPIO INPUT LOW WHEN REGISTER IS READ BACK
06
66
3-
04
0
Figure 43. Example of INT Output Controlled by the GPIO Input
(GP IO_SETUP = 01, GPIO_INPUT_CONFIG = 00)
GPIO
INPUT
INT
OUTPUT
SERIAL
READBACK
GPIO
INPUT
INT
OUTPUT
1
1READ GPIO_INT_STATUS BIT TO RESET INT OUTPUT.
GPIO INPUT HIGH WHEN REGISTER IS READ BACK
GPIO INPUT LOW WHEN REGISTER IS READ BACK
06
66
3-
04
1
Figure 44. Example of INT Output Controlled by the GPIO Input
(GPIO_SETUP = 01, GPIO_INPUT_CONFIG = 01)
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