Advanced Registers, Counters & Memory 13 コンポーネント
4-Bit PISO Shift Register
Loads four bits in parallel (Load = 1) then shifts them out one bit per clock on a single serial line (Load = 0). The parallel-in serial-out converter at the heart of serial transmitters.
学べること
- Convert parallel data into a serial bit stream
- Use a shift register load and shift modes
- Trace bits shifting toward the serial output
仕組み
Set Load = 1 and pulse the clock to capture all four data bits at once. Then set Load = 0 and each clock pulse shifts the bits right one position, emitting them one at a time on the Serial Out line (Q0 first).
使用コンポーネント
実世界での応用
Serial transmitters such as UART and SPI, sending parallel data over a single wire, and driving long chains of LEDs from a few pins.