LPC 21xx/22xx 16/32-bit Flash microcontroller, ARM7TDMI- ISP — Flash in-system programming- IAP — in-application programming- CPU supply: 1.65 - 1.95 V/3.0 - 3.6 V- I/O supply: 3.0 - 3.6 V- Fast I²C/2 UARTs/2 SPIs/PWM- 4 32-bit timers including RTC and Watchdog