• SST89E516RD Microcontroller with bootloader (no programmer needed)
• CP2102 USB to Serial Convertor on board
• 16 x 2 LCD Interface
• Switches x2
• LEDs x2
• All Ports pins as breakout.
• High quality FR4 , wave soldered PCB.

• 1 KByte Internal RAM
• Dual Block SuperFlash EEPROM– 64 KByte primary block +8 KByte secondary block
• Support External Address Range up to 64KByte of Program and Data Memory
• Three High-Current Drive Ports (16 mA each)
• Three 16-bit Timers/Counters
• Full-Duplex, Enhanced UART– Framing Error Detection– Automatic Address Recognition
• Ten Interrupt Sources at 4 Priority Levels– Four External Interrupt Inputs
• Programmable Watchdog Timer (WDT)
• Programmable Counter Array (PCA)
• Four 8-bit I/O Ports (32 I/O Pins) andOne 4-bit Port
• Second DPTR register
• Low EMI Mode (Inhibit ALE)
• SPI Serial Interface
• Standard 12 Clocks per cycle, the device has adoption to double the speed to 6 clocks per cycle.
• TTL- and CMOS-Compatible Logic Levels
• Brown-out Detection
• Low Power Modes– Power-down Mode with External Interrupt Wake-up– Idle Mode

• 8051 USB Development Board Schematic
• Windows USB to UART Drivers for CP2102
• Programming Software: EasyIAP
• Sample Code

Setting up EasyIAP SW and programming the hex file

• Connect the Board to the computer and install Windows USB to UART Drivers for CP2102.
• Note down the COM Port Number e.g. COM 2 from device manager
• Download EasyIAP and install it.
• Follow the steps in the pictures below to detect the board and flash the hex file