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參數(shù)資料
| 型號： | MPR032EPR2 |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 28/33頁 |
| 文件大小： | 0K |
| 描述： | IC CTLR TOUCH SENSOR 8-DFN |
| 產(chǎn)品培訓(xùn)模塊： | MPR03x - Low-Power Proximity Sensors |
| 特色產(chǎn)品： | MPR03x Proximity Capacitive Touch Sensor Controllers |
| 標(biāo)準(zhǔn)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(biāo)準(zhǔn)包裝 |
| 產(chǎn)品目錄頁面： | 2808 (CN2011-ZH PDF) |
| 其它名稱： | MPR032EPR2DKR |
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MPR03X
Sensors
4
Freescale Semiconductor
Figure 4. Recommended System Connections Schematic
2.3
Serial Interface
The MPR03X uses an I2C Serial Interface. The I2C protocol implementation and the specifics of communicating with the Touch
Sensor Controller are detailed in the following sections.
2.3.1
Serial-Addressing
The MPR03X operates as a slave that sends and receives data through an I2C 2-wire interface. The interface uses a Serial Data
Line (SDA) and a Serial Clock Line (SCL) to achieve bi-directional communication between master(s) and slave(s). A master
(typically a microcontroller) initiates all data transfers to and from the MPR03X, and it generates the SCL clock that synchronizes
the data transfer.
The MPR03X SDA line operates as both an input and an open-drain output. A pull-up resistor, typically 4.7k
, is required on
SDA. The MPR03X SCL line operates only as an input. A pull-up resistor, typically 4.7k
, is required on SCL if there are multiple
masters on the 2-wire interface, or if the master in a single-master system has an open-drain SCL output.
Each transmission consists of a START condition (Figure 5) sent by a master, followed by the MPR03X’s 7-bit slave address plus
R/W bit, a register address byte, one or more data bytes, and finally a STOP condition.
Figure 5. Wire Serial Interface Timing Details
2.3.2
Start and Stop Conditions
Both SCL and SDA remain high when the interface is not busy. A master signals the beginning of a transmission with a
START (S) condition by transitioning SDA from high to low while SCL is high. When the master has finished communicating with
the slave, it issues a STOP (P) condition by transitioning SDA from low to high while SCL is high. The bus is then free for another
transmission.
Figure 6. Bit Transfer
SCL
SDA
tLOW
tHIGH
tF
tR
tHD STA
tHD DAT
tHD STA
tSU DAT
tSU STA
tBUF
tSU STO
START
CONDITION
STOP
CONDITION
REPEATED START
CONDITION
START
CONDITION
DATA LINE STABLE
DATA VALID
CHANGE OF
DATA ALLOWED
SDA
SCL
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MPR03X | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Proximity Capacitive Touch Sensor Controller |
| MPR03X_09 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Proximity Capacitive Touch Sensor Controller |
| MPR03XEJ | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Proximity Capacitive Touch Sensor Controller |
| MPR03XEP | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Proximity Capacitive Touch Sensor Controller |
| MPR03XQ | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Proximity Capacitive Touch Sensor Controller |
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