103 tnt's recreation of a 555 on GF180mcu
103 : tnt's recreation of a 555 on GF180mcu
- Author: Sylvain Munaut
- Description: Just a simple classic timer IC re-imagined
- GitHub repository
- Open in 3D viewer
- Clock: 0 Hz
How it works
It's a recreation of a 555. The interal circuit doesn't match exactly what's in a (CMOS) 555 but function should be identical.
How to test
Refere to a 555 datasheet typical circuits and re-create some of them.
External hardware
- Resistors / Capacitors
- A scope to observe the output
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | On-Chip oscillator output | On-Chip oscillator discharge | |
| 1 | |||
| 2 | |||
| 3 | |||
| 4 | |||
| 5 | |||
| 6 | |||
| 7 |
Analog pins
ua | PCB Pin | Internal index | Description |
|---|---|---|---|
| 0 | B0 | 6 | threshold |
| 1 | B1 | 7 | trigger |
| 2 | B5 | 11 | reset_n |
| 3 | B4 | 10 | control |
| 4 | B3 | 9 | out |
| 5 | B2 | 8 | discharge |