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参数资料
| 型号： | STMPE2401TBR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 24 I/O, PIA-GENERAL PURPOSE, PBGA36 |
| 封装： | LEAD FREE, TFBGA-36 |
| 文件页数： | 6/55页 |
| 文件大小： | 959K |
| 代理商： | STMPE2401TBR |
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I2C Interface
STMPE2401
14/55
6
I2C Interface
The features that are supported by the I2C interface are as below:
●
I2C Slave device
●
SDAT and SCLK operates from 1.8V to 3.3V
●
Compliant to Philip I2C specification version 2.1
●
Supports Standard (up to 100kbps) and Fast (up to 400kbps) modes.
●
7-bit device addressing mode
●
General Call
●
Start/Restart/Stop
●
Address up to 4 STMPE2401 devices via I2C
The address is selected by the state of two pins. The state of the pins will be read upon
reset and then the pins can be configured for normal operation. The pins will have a pull-up
or down to set the address. The I2C interface module allows the connected host system to
access the registers in the STMPE2401.
6.1
Start condition
A Start condition is identified by a falling edge of SDATA while SCLK is stable at high state.
A Start condition must precede any data/command transfer. The device continuously
monitors for a Start condition and will not respond to any transaction unless one is
encountered.
6.2
Stop condition
A Stop condition is identified by a rising edge of SDATA while SCLK is stable at high state.
A Stop condition terminates communication between the slave device and bus master. A
read command that is followed by NoAck can be followed by a Stop condition to force the
slave device into idle mode. When the slave device is in idle mode, it is ready to receive the
next I2C transaction. A Stop condition at the end of a write command stops the write
operation to registers.
6.3
Acknowledge bit (ACK)
The acknowledge bit is used to indicate a successful byte transfer. The bus transmitter
releases the SDATA after sending eight bits of data. During the ninth bit, the receiver pulls
the SDATA low to acknowledge the receipt of the eight bits of data. The receiver may leave
the SDATA in high state if it would to not acknowledge the receipt of the data.
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相关代理商/技术参数 |
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|---|---|
| STMPE2403 | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:24-bit Enhanced port expander with Keypad and PWM controller Xpander logic |
| STMPE2403TBR | 功能描述:接口 - 专用 24-bit Enhanced RoHS:否 制造商:Texas Instruments 产品类型:1080p60 Image Sensor Receiver 工作电源电压:1.8 V 电源电流:89 mA 最大功率耗散: 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:BGA-59 |
| STMPE24M31QTR | 功能描述:电容触摸传感器 S-Touch 24 Cap Sens 15fF 512 Steps 30pF 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: |
| STMPE321 | 制造商:STMicroelectronics 功能描述:3-channel touchkey controller |
| STMPE321QTR | 功能描述:触摸屏转换器和控制器 3-channel CAP Touch Key Controller RoHS:否 制造商:Microchip Technology 类型:Resistive Touch Controllers 输入类型:3 Key 数据速率:140 SPS 分辨率:10 bit 接口类型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 电源电压:2.5 V to 5.25 V 电源电流:17 mA 工作温度:- 40 C to + 85 C 封装 / 箱体:SSOP-20 |
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