Features: l ARM 32-Bit Cortex M3 CPU, MAX 72MHz Work frequency, up to 1.25DMips/MHz during memory access with 0 wait cycles l From 64K or 128K bytes of Flash program memory, up to 20K bytes of SRAM l 2 x 12-bit analog-to-digital converters, 1 μs conversion time (up to 16 input channels) l Up to 80 fast I/O ports, 7 timers, 9 communication ports Specification: l CPU Frequency: 72MHz l Working Voltage: 2.0~3.6V l Working Temperature: -40℃~+85℃/-40℃~+105℃ l Types: STM32F103C8T6/STM32F103CbT6(Optional) l Quantity: 1/2/3 PCS Package: l 1x Microcontroller