Provides many useful peripherals:
- IRQ disable decoder
- 1kHz timer (precise) with interrupt ability
- 12kHz timer (with jitter) with interrupt ability
- 3 SPI interfaces with interrupt ability
- Parallel keyboard interface
- 8 bits R-2R audio DAC
Date: 2022-01-09
Known issues
- None
Validation process
Schematic
| Step | Status ✓ |
|---|---|
| Project name and folder | ✓ |
| Matches main schematic | ? |
| Component labels | ✓ |
| Net labels and wires | ✓ |
| All components updated | ✓ |
| Components and nets check | ✓ |
| Symbol design | ✓ |
| JMC logo and QR code | ✓ |
| Screw holes | ✓ |
| Main decoupling capacitor | ✓ |
| 2 GND connectors | ✓ |
| Headers match backplane reference | ✓ |
| Sheet info | ✓ |
| Simulator updated | ? |
PCB design
| Step | Status ✓ |
|---|---|
| File name | ✓ |
| Units set to mil | ✓ |
| Design rules check | ✓ |
| Schematic synced | ✓ |
| All components updated | ✓ |
| Routing design recommendations | ✓ |
| Board layout | ✓ |
| Board size | ✓ |
| Text size and orientation | ✓ |
| Routing optimization pass | ✓ |
PCB fabrication
| Step | Status ✓ |
|---|---|
| Gerber generated | ✓ |
| PCB built | ? |
| Components fit | ? |
| Components soldered | ? |
| Connectors fit | ? |
| First power on | ? |
| Functional tests | ? |
Documentation
| Step | Status ✓ |
|---|---|
| Link to Schematic PDF | ✓ |
| Link to Gerber | ✓ |
| Link to EasyEDA export package | ✓ |
| Pictures | ? |
| Assembly guide integration | ? |