关键词: 串并转换, 锁存器, 脉冲采样

Abstract: A method of a serial-to-parallel interface conversion circuit based on latches is introduced in this article. The serial-to-parallel conversion circuit consists of two parts: sampling signals generator and parallel latches. The sampling signals generator is used to convert the clock into small pulses aligned with clock edges. The pulse width is half of the clock period. The parallel latch is made up of several latches in parallel with same data input shared. The serial input data is sequentially sampled by latches which are controlled by sampling pulses. Data stored in the latch will not get lost until the next pulse when new data is coming, so there is enough timing redundancy to ensure the correct output of the data. The functions of the circuit were simulated and verified.

Key words: serial-to-parallel interface, latch, pulse sampling