Image shown is a representation only.Exact specifications should be obtained from the product datasheet. AT89S4051-24PU Stock Available: 288 Produc variants Default Title Qty. Add to Cart Couldn't load pickup availability Refresh Part Number AT89S4051-24PU Manufacturer Atmel Corporation / 1001 Description 8-bit Microcontroller with 2K/4K Bytes Flash Package/Case PDIP-20 Package Tube Datasheet Internal reference: B3-17