Programming example of stm32f1 and stm32subeide -74hc595 drives 4-bit 7-segment nixie tube

74HC595 drive 4 position 7 Segment nixie tube

1、74HC595 Introduce

74HCT595 It's a 8 Bit serial input / Serial or parallel output shift register , With a storage register and three state output . Both shift register and storage register have independent clocks . The device has serial input (DS) And serial output (Q7S) To enable cascading and asynchronous reset MR Input . MR The low level on will reset the shift register . The data is in SHCP Shift when the input is converted from low level to high level . The data in the shift register is STCP The input is transferred to the storage register when it is converted from low level to high level . If two clocks are connected , The shift register will always be one clock pulse earlier than the storage register . As long as the output enables the input (OE) Low level , The data in the storage register will appear at the output . OE A high level on the will cause the output to show a high impedance off state . OE The input operation will not affect the state of the register . The input includes a clamp diode . This makes it possible to use current limiting resistors to connect the input interface to more than VCC The voltage of .

In the previous article , Yes 74HC595 And its use are introduced in detail , Please refer to ：

• 8051 Single chip microcomputer Proteus Simulation and development examples -74HC595 Shift register driver simulation
• Arduino And JavaScript Development example - Nixie tube display control （ be based on 74HC595）