- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄9488 > AD7147AACBZ-500RL7 (Analog Devices Inc)IC CDC 13CH SPI W/RAM 25WLCSP PDF資料下載
參數(shù)資料
| 型號： | AD7147AACBZ-500RL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 21/69頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CDC 13CH SPI W/RAM 25WLCSP |
| 產(chǎn)品變化通告： | 8mm Carrier Tape Changes 28/Feb/2012 |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 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： | 25-UFBGA，WLCSP |
| 供應(yīng)商設(shè)備封裝： | 25-WLCSP |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | AD7147AACBZ-500RL7DKR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁當(dāng)前第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁
AD7147A
Rev. B | Page 27 of 68
INTERRUPT OUTPUT
SENSOR-TOUCH INTERRUPT
The AD7147A has an interrupt output that triggers an interrupt
service routine on the host processor. The INT signal is on Pin A1
and is an open-drain output. There are three types of interrupt
events on the AD7147A: a CDC conversion-complete interrupt,
a sensor-touch interrupt, and a GPIO interrupt. Each interrupt
has enable and status registers. The conversion-complete and
sensor-touch (sensor-activation) interrupts can be enabled on
a per-conversion-stage basis. The status registers indicate what
type of interrupt triggered the INT pin. Status registers are cleared,
and the INT signal is reset high during a read operation. The
signal returns high as soon as the read address has been set up.
The sensor-touch interrupt mode is implemented when the host
processor requires an interrupt only when a sensor is contacted.
Configuring the AD7147A into this mode results in the interrupt
being asserted when the user makes contact with the sensor and
again when the user stops touching the sensor. The second
interrupt is required to alert the host processor that the user is
no longer contacting the sensor.
The registers located at Address 0x005 and Address 0x006 are
used to enable the interrupt output for each stage. The registers
located at Address 0x008 and Address 0x009 are used to read
back the interrupt status for each stage.
CDC CONVERSION-COMPLETE INTERRUPT
The AD7147A interrupt signal asserts low to indicate the comple-
tion of a conversion stage and that new conversion result data is
available in the registers.
Figure 39 shows the interrupt output timing during contact with
one of the sensors connected to STAGE0 while operating in the
sensor-touch interrupt mode. For a low limit configuration, the
interrupt output is asserted as soon as the sensor is contacted and
again after the user has stopped touching the sensor. (Note that
the interrupt output remains low until the host processor reads
back the interrupt status registers located at Address 0x008 and
Address 0x009.)
The interrupt can be independently enabled for each conversion
stage. Each conversion-stage-complete interrupt can be enabled via
the STAGE_COMPLETE_INT_ENABLE register (Address 0x007).
This register has a bit that corresponds to each conversion stage.
Setting this bit to 1 enables the interrupt for that stage. Clearing this
bit to 0 disables the conversion-complete interrupt for that stage.
The interrupt output is asserted when there is a change in the
interrupt status bits. This can indicate that a user is touching the
sensor(s) for the first time, the number of sensors being touched
has changed, or the user is no longer touching the sensor(s).
Reading the status bits in the interrupt status register shows the
current sensor activations.
The AD7147A interrupt should be enabled only for the last
stage in a conversion sequence. For example, if there are five
conversion stages, only the conversion-complete interrupt for
STAGE4 is enabled. Therefore, INT asserts only when all five
conversion stages are complete and the host can read new data
from all five result registers. The interrupt is cleared by reading
the STAGE_COMPLETE_INT_STATUS register located at
Address 0x00A.
4
2
CONVERSION
STAGE
SERIAL
READBACK
INT OUTPUT
3
1
STAGE1
STAGE0
FINGER ON SENSOR
FINGER OFF SENSOR
1USER TOUCHING SENSOR.
2ADDRESS 0x008 IS READ BACK TO CLEAR INTERRUPT.
3USER STOPS TOUCHING SENSOR.
4ADDRESS 0x008 IS READ BACK TO CLEAR INTERRUPT.
07727-
039
Register 0x00A is the conversion-complete interrupt status
register. Each bit in this register corresponds to a conversion
stage. If a bit is set, it means that the conversion-complete
interrupt for the corresponding stage was triggered. This
register is cleared upon a read if the underlying condition
that triggered the interrupt is not present.
Figure 39. Example of Sensor-Touch Interrupt
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ICM7242IPAZ | IC OSC BINARY CTC 13MHZ 8-DIP |
| MS17344R24C22P | CONN PLUG 4POS STRAIGHT W/PINS |
| MC14536BDWG | IC OSC PROG TIMER 2MHZ 16SOIC |
| MS17344C24C22P | CONN PLUG 4POS STRAIGHT W/PINS |
| MS17344R24C28P | CONN PLUG 24POS STRAIGHT W/PINS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7147AACBZ-RL | 功能描述:IC CDC 13CH SPI W/RAM 25WLCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:CapTouch™ 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| AD7147ACPZ-1500RL7 | 功能描述:IC CAP-TO-DGTL CONV PROG 24LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:CapTouch™ 產(chǎn)品培訓(xùn)模塊:Data Converter Basics 標(biāo)準(zhǔn)包裝:1 系列:- 類型:電機(jī)控制 分辨率（位）:12 b 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，并聯(lián) 電壓電源:單電源 電源電壓:2.7 V ~ 3.6 V，4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:100-TQFP 供應(yīng)商設(shè)備封裝:100-TQFP（14x14） 包裝:剪切帶 (CT) 其它名稱:296-18373-1 |
| AD7147ACPZ-1500RL7 | 制造商:Analog Devices 功能描述:IC CDC 16BIT 111SPS LFCSP-24 |
| AD7147ACPZ-1REEL | 功能描述:IC CAP-TO-DGTL CONV PROG 24LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:CapTouch™ 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 類型:數(shù)據(jù)采集系統(tǒng)（DAS） 分辨率（位）:16 b 采樣率（每秒）:21.94k 數(shù)據(jù)接口:MICROWIRE?，QSPI?，串行，SPI? 電壓電源:模擬和數(shù)字 電源電壓:1.8 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:40-WFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:40-TQFN-EP（6x6） 包裝:托盤 |
| AD7147ACPZ-500RL7 | 功能描述:IC CAP-TO-DGTL CONV PROG 24LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - ADCs/DAC - 專用型 系列:CapTouch™ 產(chǎn)品培訓(xùn)模塊:Data Converter Basics 標(biāo)準(zhǔn)包裝:1 系列:- 類型:電機(jī)控制 分辨率（位）:12 b 采樣率（每秒）:1M 數(shù)據(jù)接口:串行，并聯(lián) 電壓電源:單電源 電源電壓:2.7 V ~ 3.6 V，4.5 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:100-TQFP 供應(yīng)商設(shè)備封裝:100-TQFP（14x14） 包裝:剪切帶 (CT) 其它名稱:296-18373-1 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。