- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄9725 > MPR084EJ (Freescale Semiconductor)IC CTLR TOUCH SENSR PROX 16TSSOP PDF資料下載
參數(shù)資料
| 型號： | MPR084EJ |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 9/40頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CTLR TOUCH SENSR PROX 16TSSOP |
| 產(chǎn)品目錄繪圖： | MPR08(3,4)EJ Top MPR08(3,4)EJ Side |
| 標(biāo)準(zhǔn)包裝： | 96 |
| 類型： | 電容性 |
| 輸入數(shù)/鍵： | 8 鍵 |
| 評估套件： | 可供 |
| 數(shù)據(jù)接口： | I²C，串行 |
| 電源電壓： | 1.8 V ~ 3.6 V |
| 電流 - 電源： | 1.62mA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-TSSOP |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 2808 (CN2011-ZH PDF) |
| 配用： | KITMPR084EVM-ND - KIT EVAL 8-PAD TOUCH MPR084 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁當(dāng)前第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
MPR084
Sensors
Freescale Semiconductor
17
5
Low Power Configuration
5.1
Introduction
The MPR084 features a Low Power mode that can reduce the power consumption into the microamps range. This feature can
be used to both adjust the response time of the system, and change the conditions on which Low Power would be enabled.
5.2
Operation
This Low Power configuration is only active when the sensor controller is in Run2 mode. The Low Power mode decreases current
consumption by increasing the response time of the MPR084. This increase is controlled through two factors.
During normal Run2 operation of the sensor controller the Max Response Time (MRT) is calculated by taking the product of the
TASP and the primary clock. From Chapter 4 the primary clock is the (MTP + 5) ms. Since the sensor controller is in Run2, the
primary clock is also multiplied by a factor of 8. The debounce rate of the MPR084 is 4 times the sample rate thus the MRT is
represented by the following equation.
Equation 1
First, the Idle Interface Timeout (IIT) represents the total time the touch interface should remain idle before going into Low Power
mode. This value can be calculated by taking the product of the ITP, TASP and primary clock (8ms) with a factor of 64. Thus the
IIT is represented as follows:
Equation 2
Second, the Max Response Time (MRT) represents the total time the touch interface should remain inactive before scanning the
electrodes. This value can be calculated by taking the product of the SCD, TASP and primary clock (8ms) with a factor of 5. Thus
the MRT is represented as follows:
Equation 3
When in Run2 mode, the sensor controller will initially scan the electrodes at the rate of MRT1. When scanning at MRT1 and the
touch interface remains idle for the IIT period then the scan period will change to MRT2. When scanning at MRT2 and a touch is
detected the scan rate will transition back to MRT1.
Figure 20. Low Power Scan Period Transition Diagram
5.3
Configuration
Low Power Configuration is achieved through setting two values; the Idle Timeout Period and the Sleep Cycle Duration. This
functionality is described in the following section.
MRT1
MTP
5
+
8
----------------------
1
+
TASP
48ms
=
MRT2
MTP
5
+
8
----------------------
1
+
TASP
SCD
48
ms
=
ITT
MTP
5
+
8
----------------------
1
+
TASP
ITP
68ms
=
LP DISABLED
ITT PERIOD
run2 SET
TOUCH DETECTED
MRT1
MRT2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MS27496E9F35S | CONN RCPT 6POS BOX MNT W/SCKT |
| VE-JWL-MX-F4 | CONVERTER MOD DC/DC 28V 75W |
| MS27467E13B35PD | CONN PLUG 22POS STRAIGHT W/PINS |
| MS27473T18A32PD | CONN PLUG 32POS STRAIGHT W/PINS |
| VE-JWL-MX-F2 | CONVERTER MOD DC/DC 28V 75W |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MPR084EJR2 | 功能描述:電容觸摸傳感器 8 POSIT 10 PADS RoHS:否 制造商:Microchip Technology 電源電壓: 通道數(shù)量: 封裝 / 箱體: 尺寸: 溫度范圍: |
| MPR084Q | 功能描述:電容觸摸傳感器 4 POSITION ROTARY & RoHS:否 制造商:Microchip Technology 電源電壓: 通道數(shù)量: 封裝 / 箱體: 尺寸: 溫度范圍: |
| MPR084QR2 | 功能描述:電容觸摸傳感器 4 POSITION ROTARY & RoHS:否 制造商:Microchip Technology 電源電壓: 通道數(shù)量: 封裝 / 箱體: 尺寸: 溫度范圍: |
| MPR0854FPXXXZ01A | 功能描述:AC/DC CONVERTER 54V 800W 制造商:ge critical power 系列:MPR，耐火 零件狀態(tài):有效 類型:前端 輸出數(shù):1 電壓 - 輸入:90 ~ 264 VAC 電壓 - 輸出 1:54V 電壓 - 輸出 2:- 電壓 - 輸出 3:- 電壓 - 輸出 4:- 電流 - 輸出（最大值）:14.8A 功率（W）:800W 應(yīng)用:ITE（商業(yè)） 電壓 - 隔離:3kV（3000V） 效率:88% 工作溫度:-10°C ~ 70°C（有降額） 特性:熱插拔，I2C? 接口，負(fù)載均分，PFC，PMBus?，遠(yuǎn)程開/關(guān)，遙測，待機輸出，通用輸入 安裝類型:機架安裝 大小/尺寸:8.93" 長 x 3.40" 寬 x 1.57" 高（226.8mm x 86.4mm x 39.9mm） 所需最小負(fù)載:無 認(rèn)可:- 功率（W） - 最大值:800W 標(biāo)準(zhǔn)包裝:5 |
| MPR106M2 | 制造商:DEARBORN ELECTRONICS INC 功能描述:CAPACITOR MILITARY FILM |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。