Specifications:

Core Processor: 8051
Core Size: 8-Bit
Speed: 33MHz
Connectivity: UART/USART
Peripherals: POR, PWM, WDT
Number of I/O: 32
Program Memory Size: 32KB (32K x 8)
Program Memory Type: FLASH
EEPROM Size: N/A
RAM Size: 512 x 8
Voltage - Supply (Vcc/Vdd): 4.5V ~ 5.5V
Data Converters: None
Oscillator Type: Internal
Operating Temperature: 0°C ~ 70°C (TA)
Mounting Type: Surface Mount
Package / Case: 44-LCC (J-Lead)
Supplier Device Package: 44-PLCC (16.59x16.59)