Microchip Technology SST89C58RC-40-C-QIF-T Connectivity: EBI/EMI, I??C, SMBus, UART/USART Core: 8051 Core Processor: 8051 Core Size: 8-Bit Data Bus Width: 8 bit Data Converters: - Data Ram Size: 1 KB Eeprom Size: 2K x 8 ID_COMPONENTS: 1925618 Interface Type: SMBus Maximum Clock Frequency: 40 MHz Maximum Operating Temperature: + 70 C Mounting Style: SMD/SMT Number Of I /o: 32 Number Of Programmable I/os: 32 Number Of Timers: 3 Operating Supply Voltage: 2.7 V to 5.5 V Operating Temperature: 0?°C ~ 70?°C Oscillator Type: External Package / Case: 40-WFQFN Exposed Pad Peripherals: Brown-out Detect/Reset, POR, WDT Processor Series: SST89C58RC Program Memory Size: 32KB (32K x 8) Program Memory Type: FLASH Ram Size: 1K x 8 Series: FlashFlex?® Speed: 40MHz Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V RoHS: yes Data RAM Size: 1 KB Number of Programmable I/Os: 32 Number of Timers: 3