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參數(shù)資料
| 型號： | MPR031EPR2 |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 23/33頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CTLR TOUCH SENSOR 8-DFN |
| 產(chǎn)品培訓模塊： | MPR03x - Low-Power Proximity Sensors |
| 特色產(chǎn)品： | MPR03x Proximity Capacitive Touch Sensor Controllers |
| 標準包裝： | 1 |
| 類型： | 電容性 |
| 觸摸面板接口： | 2 線 |
| 評估套件： | 可供 |
| 數(shù)據(jù)接口： | I²C，串行 |
| 數(shù)據(jù)速率/采樣率 (SPS，BPS)： | 400k |
| 電源電壓： | 1.71 V ~ 2.75 V |
| 電流 - 電源： | 43µA |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-UFDFN |
| 供應(yīng)商設(shè)備封裝： | 8-QFN-D（2x2） |
| 包裝： | 標準包裝 |
| 產(chǎn)品目錄頁面： | 2808 (CN2011-ZH PDF) |
| 配用： | KITMPR03XEVM-ND - KIT EVAL FOR MPR03X DEMOMPR031-ND - BOARD DEMO FOR MPR031 CTLR |
| 其它名稱： | MPR031EPR2DKR |
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MPR03X
Sensors
Freescale Semiconductor
3
2
External Signal Description
2.1
Device Pin Assignment
Table 1 shows the pin assignment for the MPR03X. For a more detailed description of the functionality of each pin, refer to the
appropriate chapter.
The package available for the MPR03X is a 2 x 2 mm 8 pin
DFN. The package and pinout is shown in Figure 3.
Figure 3. Package Pinouts
2.2
Recommended System Connections
The MPR03X Capacitive Touch Sensor Controller requires one external passive component. As shown in Table 1, the REXT line
should have a 75 k
connected from the pin to GND. This resistor needs to be 1% tolerance.
In addition to the one resistor, a bypass capacitor of 10 F should always be used between the VDD and VSS lines and a
4.7 k
pull-up resistor should be included on the IRQ. Note: This condition is when pin 8 is used for interrupt indication and not
for electrode sensing.
The remaining two connections are SCL and SDA. Depending on the specific application, each of these control lines can be used
by connecting them to a host controller. In the most minimal system, the SCL and SDA must be connected to a master I2C
interface to communicate with the MPR03X. All of the connections for the MPR03X are shown by the schematic in Figure 4.
Table 1. Device Pin Assignment
Pin
Name
Function
1SCL
I2C Serial Clock Input
2SDA
I2C Serial Data I/O
3VSS
Ground
4VDD
Positive Supply Voltage
5
REXT
Reference Resistor
Connect a 75 k
±1% resistor from REXT to V
SS
6
ELE0
Electrode 0
7
ELE1
Electrode 1
8IRQ/ELE2
Interrupt Output or Touch Electrode Input 2
IRQ is the active-low open-drain interrupt output
1
SCL
2
3
8
7
6
5
4
SDA
VSS
VDD
IRQ/ELE2
ELE1
ELE0
REXT
MPR03X
Interface
IC Serial
3
VSS
SDA
SCL
MPR03X
ELE0
ELE1
IRQ/ELE2
1
2
VSS
75k
VDD
REXT
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| MPR032EPR2 | 功能描述:電容觸摸傳感器 DFN TOUCH PAD 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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