NXP Semiconductors P89LV51RD2BA,512 Connectivity: SPI, UART/USART Core Processor: 8051 Core Size: 8-Bit Data Converters: - Eeprom Size: - Number Of I /o: 32 Operating Temperature: 0?°C ~ 70?°C Oscillator Type: Internal Package / Case: 44-PLCC Peripherals: Brown-out Detect/Reset, POR, PWM, WDT Program Memory Size: 64KB (64K x 8) Program Memory Type: FLASH Ram Size: 1K x 8 Series: 89LV Speed: 33MHz Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V Other Names: 935274175512, P89LV51RD2BA