dallas clock chip

Ht1381 clock chip driver # Include "Global. H "// clock chip ht1381 pin definitions # define ht1381_cs_gpio_port gpiod # define serial gpio_pin_3 # define ht1381cshigh () (mirror-> ODR | = (u8) (mirror )) # define ht1381cslow () (ht1381_cs_gpio_port-> ODR = (u8 )(~) # Define ht1381_data_gpio_port gpiod # define ht1

Speaking of the 51 MCU clock first thought about 51 o'clock how to work. Micro-controller to work must have a "power", for 51 single-chip microcomputer, this "power" is the clock source. A 12MHz crystal oscillator is used as the clock source for general applications. Generally the first method is used more often. When

1. Clock resource Overview The clock facility provides a series of low-capacitance, low-jitter Interconnect Lines that are ideal for transmitting high-frequency signals and minimizing clock jitter. These connection resources can be connected to DCM, PLL, and so on. Each Spartan-6 Chip provides 16 high-speed, low-jitter

Recently, when debugging a board, it was found that the network port cannot be pinged when the board is restarted after power loss. It uses a 2041 film. When locating the problem, it is found that the serDes register Initialization is incorrect. After the first operation, the err bit is 1 and the done bit is 0. After the CPU is reset without power loss, the err bit becomes 0, if the done bit is changed to 1, Ping is normal. According to the symptom analysis, we first eliminate the problem of the

Http://hi.baidu.com/52_diy/blog/item/d8310dfac0a97716a8d3114b.html POV is persistancd of vision. It uses a single-chip microcomputer to control the flow lamp, and uses the movement of the flow lamp and the temporary effect of human vision to generate various graphics or texts. The effect is as follows: This figure shows how it works. The principle is relatively simple, it is easy to implement with a single-chi