1. Single module can drive the an 8 * 8 dot matrix common cathode.
2. The module Operating voltage: 5V
3. Size: 3.2X 3.2X 1.3 cm
4. With four screws, the diameter of 3 mm.
5. Modules with input and output interfaces, support for cascading multiple modules 32 KB of which 4KB used by boot loader.
SRAM 2.5 KB
EEPROM 1