參數(shù)資料
型號: AD7147ACPZ-REEL
廠商: Analog Devices Inc
文件頁數(shù): 26/73頁
文件大?。?/td> 0K
描述: IC CAP-TO-DGTL CONV PROG 24LFCSP
標準包裝: 5,000
系列: CapTouch™
類型: 電容數(shù)字轉(zhuǎn)換器
分辨率(位): 16 b
采樣率(每秒): 250k
數(shù)據(jù)接口: 串行,SPI?
電壓電源: 單電源
電源電壓: 2.6 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 24-VFQFN 裸露焊盤,CSP
供應商設備封裝: 24-LFCSP-VQ(4x4)
包裝: 帶卷 (TR)
配用: EVAL-AD7147EBZ-ND - BOARD EVAL FOR AD7147ACPZ
EVAL-AD7147-1EBZ-ND - BOARD EVAL FOR AD7147ACPZ-1
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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