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參數(shù)資料
| 型號： | STMPE2401TBR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 24 I/O, PIA-GENERAL PURPOSE, PBGA36 |
| 封裝： | LEAD FREE, TFBGA-36 |
| 文件頁數(shù)： | 6/55頁 |
| 文件大?。?/td> | 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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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
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| STMPE321 | 制造商:STMicroelectronics 功能描述:3-channel touchkey controller |
| STMPE321QTR | 功能描述:觸摸屏轉(zhuǎn)換器和控制器 3-channel CAP Touch Key Controller RoHS:否 制造商:Microchip Technology 類型:Resistive Touch Controllers 輸入類型:3 Key 數(shù)據(jù)速率:140 SPS 分辨率:10 bit 接口類型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 電源電壓:2.5 V to 5.25 V 電源電流:17 mA 工作溫度:- 40 C to + 85 C 封裝 / 箱體:SSOP-20 |
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