參數(shù)資料
型號(hào)： MPR083Q
廠商： Freescale Semiconductor
文件頁(yè)數(shù)： 7/35頁(yè)
文件大小： 0K
描述： IC CTLR TOUCH SENSOR PROX 16-QFN
產(chǎn)品培訓(xùn)模塊： Sensor Toolbox
產(chǎn)品目錄繪圖： MPR08(3,4)Q Top
標(biāo)準(zhǔn)包裝： 490
類型： 電容性
輸入數(shù)/鍵： 8 個(gè)滑塊
評(píng)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-VQFN 裸露焊盤
供應(yīng)商設(shè)備封裝： 16-QFN-EP（5x5）
包裝： 散裝
產(chǎn)品目錄頁(yè)面： 2808 (CN2011-ZH PDF)
配用： DEMOMPR083-ND - BOARD DEMO FOR MPR083 CTLR
KITMPR083EVM-ND - KIT EVAL 8POSITION ROTARY TOUCH
MPR083
Sensors
Freescale Semiconductor
15
5
Low Power Configuration
5.1
Introduction
The MPR083 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 MPR083. 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 MPR083 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 18. Low Power Scan Period Transition Diagram
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
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MPR083QR2 功能描述:電容觸摸傳感器 10 PADS 8 POSITION 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:
MPR084 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Proximity Capacitive Touch Sensor Controller
MPR084EJ 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:
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:
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