参数资料
| 型号： | MPR031EPR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 29/33页 |
| 文件大小： | 0K |
| 描述： | IC CTLR TOUCH SENSOR 8-DFN |
| 产品培训模块： | MPR03x - Low-Power Proximity Sensors |
| 特色产品： | MPR03x Proximity Capacitive Touch Sensor Controllers |
| 标准包装： | 1 |
| 类型： | 电容性 |
| 触摸面板接口： | 2 线 |
| 评估套件： | 可供 |
| 数据接口： | I²C，串行 |
| 数据速率/采样率 (SPS，BPS)： | 400k |
| 电源电压： | 1.71 V ~ 2.75 V |
| 电流 - 电源： | 43µA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-UFDFN |
| 供应商设备封装： | 8-QFN-D（2x2） |
| 包装： | 标准包装 |
| 产品目录页面： | 2808 (CN2011-ZH PDF) |
| 配用： | KITMPR03XEVM-ND - KIT EVAL FOR MPR03X DEMOMPR031-ND - BOARD DEMO FOR MPR031 CTLR |
| 其它名称： | MPR031EPR2DKR |
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MPR03X
Sensors
Freescale Semiconductor
5
2.3.3
Bit Transfer
One data bit is transferred during each clock pulse (Figure 7). The data on SDA must remain stable while SCL is high.
Figure 7. Stop and Start Conditions
2.3.4
Acknowledge
The acknowledge bit is a clocked 9th bit (Figure 8) which the recipient uses to handshake receipt of each byte of data. Thus each
byte transferred effectively requires 9 bits. The master generates the 9th clock pulse, and the recipient pulls down SDA during
the acknowledge clock pulse, such that the SDA line is stable low during the high period of the clock pulse. When the master is
transmitting to the MPR03X, the MPR03X generates the acknowledge bit, since the MPR03X is the recipient. When the MPR03X
is transmitting to the master, the master generates the acknowledge bit, since the master is the recipient.
Figure 8. Acknowledge
2.3.5
The Slave Address
The MPR03X has a 7-bit long slave address (Figure 9). The bit following the 7-bit slave address (bit eight) is the R/W bit, which
is low for a write command and high for a read command.
Figure 9. Slave Address
The MPR03X monitors the bus continuously, waiting for a START condition followed by its slave address. When a MPR03X
recognizes its slave address, it acknowledges and is then ready for continued communication.
The MPR031 and MPR032 slave addresses are show in Table 2.
Table 2.
Part Number
I2C Address
MPR031
0x4A
MPR032
0x4B
START
CONDITION
SDA
SCL
STOP
CONDITION
P
S
START
CONDITION
SDA
BY TRANSMITTER
S
12
8
9
CLOCK PULSE FOR
ACKNOWLEDGEMENT
SDA
BY RECEIVER
SCL
SDA
1
R/W
ACK
MSB
SCL
01
00
1
0
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MPR031EPR2 | 制造商:Freescale Semiconductor 功能描述:IC CAPACITIVE TOUCH SENSOR FN-8 |
| MPR031EPR2-CUT TAPE | 制造商:Freescale 功能描述:MPR031 Series 2.75 V 8 ? Proximity Capacitive Touch Sensor Controller - UDFN-8 |
| MPR032 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:Proximity Capacitive Touch Sensor Controller |
| MPR032EP | 制造商:Freescale Semiconductor 功能描述:CAPACITIVE TOUCH SENSOR 8-PIN UDFN BULK - Bulk |
| MPR032EPR2 | 功能描述:电容触摸传感器 DFN TOUCH PAD RoHS:否 制造商:Microchip Technology 电源电压: 通道数量: 封装 / 箱体: 尺寸: 温度范围: |
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