STMicroelectronics ST72F321R6TC Connectivity: I??C, SCI, SPI Core Processor: ST7 Core Size: 8-Bit Data Converters: A/D 16x10b Eeprom Size: - Number Of I /o: 48 Operating Temperature: -40?°C ~ 125?°C Oscillator Type: Internal Package / Case: 64-TQFP, 64-VQFP Peripherals: LVD, POR, PWM, WDT Program Memory Size: 32KB (32K x 8) Program Memory Type: FLASH Ram Size: 1K x 8 Series: ST7 Speed: 8MHz Voltage - Supply (vcc/vdd): 3.8 V ~ 5.5 V Product Category: 8-bit Microcontrollers - MCU Core: ST7 Data Bus Width: 8 bit Maximum Clock Frequency: 8 MHz Data RAM Size: 1 KB On-Chip ADC: Yes Maximum Operating Temperature: + 125 C Mounting Style: SMD/SMT A/D Bit Size: 10 bit A/D Channels Available: 16 Interface Type: I2C, SCI, SPI Minimum Operating Temperature: - 40 C Number of Programmable I/Os: 48 Number of Timers: 2 Processor Series: ST72F3x Factory Pack Quantity: 90 Supply Voltage - Max: 5.5 V Supply Voltage - Min: 3.8 V