Philips Semiconductors P89LPC922FDH,529 Core: 80C51 Data Bus Width: 8 bit Maximum Clock Frequency: 18 MHz Program Memory Size: 8 KB Data RAM Size: 256 B On-Chip ADC: No Operating Supply Voltage: 2.4 V to 3.6 V Maximum Operating Temperature: + 85 C Package / Case: TSSOP-20 Mounting Style: SMD/SMT Interface Type: I2C, UART Minimum Operating Temperature: - 40 C Number of Programmable I/Os: 18 Number of Timers: 2 On-Chip DAC: No Program Memory Type: Flash Factory Pack Quantity: 75 Supply Voltage - Max: 3.6 V Supply Voltage - Min: 2.4 V