只用两跟引脚与CPU的I2C控制器相连,一个就是I2C_SCL一个就是I2C_SDA。CPU上的I2C_SCL和I2C_SDA上可以接很多芯片。每个芯片都会有个设备ID, 或者称为设备地址,去看芯片的原理图,里面都有设备的地址,比如说我们这里的FM24CL04。 I2C硬件协议 首先CPU会发出一个start信号,保持SCL为高电平,SDA由高变为低......
o Fast mode (Fm+) – 3.4 Mbps data rate • Open drain operation only (floating NWELL with PMOS used for ESD protection only) • Built-in output slew rate control to meet I2C Tof minimum of (20 x VDDP/5.5V) ns • Output enable ...
The baud rate used by the I2C master is determined by the baud option of the URI. Standard baud rates for I2C are: Baud Rate Description 100 kHz Original speed. 400 kHz Fast mode (Fm). 1 MHz Fast mode plus (Fm+). 3.4 MHz High-speed mode (Hs). 5 MHz Ultra-Fast mode ...
The I2C library provides open-drain bi-directional I/O cells designed for the I2C two-line interface. It is compliant with the I2C-bus specification – UMC10204 I2C-bus specification and user manual, Rev.4 – 13 February 2012, NXP. The design supports the Sm, Fm and Fm+ modes of ...
tx clk select 0: iicclk=fmclk/16; 1:iicclk= fmclk/512 14、.tx/rx interrupt 0: 禁止tx/rx 中断; 1:允许tx/rx 中断。int_pnd 写0:清除中断标志并重新启动i2c 总线写操作;读1:中断标志置位。tx clock value i2c发送加载初始数据,决定发送频率。(2) i2c 总线状态寄存器iicstatmode_s 00: 从接受...
*N 2023-04-26 USB-Serial Dual Channel (UART/I2C/SPI) Bridge with CAPSENSE™ and BCD Pin description Table 19 GPIO configuration GPIO configuration option Description TRISTATE I/O tristated DRIVE 1 Output static 1 DRIVE 0 Ou...
I am currently using a PSOC 5 80 mhz part and would like to know if going to the FM4 160 mhz part is a good idea? For one I don't know much about the FM4 parts and two I don't know what programmer i need or IDE to use. Is it really worth the trouble to go to...
Since UFm I2C-bus uses push-pull drivers, it does not have the multi-controller capability of the wired-AND open-drain Sm, Fm, and Fm+ I2C-buses. In UFm, a controller is the only device that initiates a data transfer on the bus and generates the clock signals to permit that transfer...
I've got almost everything working. Engine diagnostics work, touchscreen in the mail. GUI is in the works. But the FM module is kicking my butt! I'm loosing sleep over this, and dreaming about i2c connections when I do get some. The Si4703 module is capable of using a 2-wire or...
to trigger an event. The inputs can then be polled to see which are set. Another option would be to use one of theoutputs to toggle the backlight by driving it via a2N7000 mosfet. Rick April 05, 2011 by Ralphxyz Sorry I meant what is the I/O listing there for? Is ...