- STC89C52 STC12C5A60S2 STC11/10x series
- AT89S51、AT89S52 series
- 40 pins Clamp enable to remove or lock chip easily
- A serial jack RS232 for data communication testing or downloading programming for chips
- Extra 1602, 12864 LCD jack enable test easily
- Power Supply: Power Jack (5.5-2.1 mm, DC4.5-5.5V)
- All the pins of chips are brought out which are used to expand more functions.
- Standard ISP download port, for online programming.
- Crystal are replaceable
- Four locking rods enable easily place or fix somewhere
- P0 I/O has pull-up resistor
- Two extra channels of external power (VCC and GND)
Documentation of schematic.