Microcontroller | ATmega168 or ATmega328V Operating Voltage | 2.7-5.5 V Input Voltage | 2.7-5.5 V Digital I/O Pins | 14 PWM Channels | 6 Analog Input Channels | 6 DC Current per I/O Pin | 40 mA Flash Memory | 16 KB (of which 2 KB used by bootloader) SRAM | 1 KB EEPROM | 512 bytes Clock Speed | 8 MHz This is the LilyPad Arduino Simple Board. It’s controlled by an ATmega328 with the Arduino bootloader. It has a built in power supply socket, and an on/off switch. The Simple board is designed to streamline your next sewable project by keeping things simple and giving you more room to work  and eliminating the need to sew a power supply. This revision does away with the ISP header and adds a charging circuit based on the MCP73831 IC.