STMicroelectronics ST72F344S4T6TR Connectivity: I??C, LIN, SCI, SPI Core: ST7 Core Processor: ST7 Core Size: 8-Bit Data Bus Width: 8 bit Data Converters: A/D 12x10b Data Ram Size: 1 KB Development Tools By Supplier: ST72F34X-SK/RAIS, ST7MDT40-EMU3, STX-RLINK Eeprom Size: 256 x 8 Interface Type: I2C, SCI, SPI Maximum Clock Frequency: 8 MHz Maximum Operating Temperature: + 85 C Minimum Operating Temperature: - 40 C Mounting Style: SMD/SMT Number Of I /o: 34 Number Of Programmable I/os: 34 Number Of Timers: 4 On-chip Adc: 10 bit, 12 Channel Operating Temperature: -40?°C ~ 85?°C Oscillator Type: Internal Package / Case: 44-LQFP Peripherals: LVD, POR, PWM, WDT Processor Series: ST72F3x Program Memory Size: 16KB (16K x 8) Program Memory Type: FLASH Ram Size: 1K x 8 Series: ST7 Speed: 8MHz Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V Product Category: 8-bit Microcontrollers - MCU RoHS: yes Data RAM Size: 1 KB On-Chip ADC: Yes A/D Bit Size: 10 bit A/D Channels Available: 12 Number of Programmable I/Os: 34 Number of Timers: 4 Supply Voltage - Max: 5.5 V Supply Voltage - Min: 3.3 V