Atmel AT89S51, 8-bit Microcontroller with Programmable Flash Memory, 46 Piece LotCondition: * New Stock. In OEM Packaging. As PicturedAdditional Notes:* Quantity: 46 Piece Lot* Compatible with MCS-51 products* 4K bytes of In-System Programmable (ISP) Flash Memory – Endurance: 10,000 Write/Erase Cycles* 4.0-5.5V Operating Range* Fully Static Operation: 0Hz to 33MHz* Three-level Program Memory Lock* 128 x 8-bit Internal RAM* 32 Programmable I/O lines* Two 16-bit Timer/Counters* Six interrupt sources* Full Duplex UART serial channel* Low-power Idle and power-down mode* Watchdog Timer* Dual Data Pointer* Power-off Flag* Fast Programming Time* Flexible ISP Programming (Byte & Page Mod)AtmelAT89S51