note: This part is 100% code compatible with NXP P89V516RD2 The main advantage of using SST89E516 is it has a inbuilt bootloader and it can be serially programmed through PC using EASY IAP Software. Click here To download free software. SST89E516 is perfect for students & Hobbyist who do not want to spend amount buying programmers. Features of SST89E516RD 8-bit 8051-Compatible Microcontroller (MCU)with Embedded SuperFlash Memory– Fully Software Compatible– Development Toolset Compatible– Pin-For-Pin Package Compatible SST89E516RD2 Operation– 0 to 40 MHz at 5V SST89V516RD2 Operation– 0 to 33 MHz at 3V 1 KByte Internal RAM Dual Block SuperFlash EEPROM– 64 KByte primary block +8 KByte secondary block(128-Byte sector size for both blocks)– Individual Block Security Lock with SoftLock– Concurrent Operation duringIn-Application Programming (IAP)– Memory Overlay for Interrupt Support during IAP 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 an option 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 Temperature Ranges:– Commercial (0°C to +70°C)– Industrial (-40°C to +85°C) Packages Available– 40-contact WQFN (Port 4 feature not available)– 44-lead PLCC– 40-pin PDIP (Port 4 feature not available)– 44-lead TQFP All non-Pb (lead-free) devices are RoHS compliant