AT89C5131A-M Datasheet | Atmel

Features - 80C52X2 Core (6 Clocks per Instruction) - Maximum Core Frequency 48 MHz in X1 Mode, 24 MHz in X2 Mode - Dual Data Pointer - Full-duplex Enhanced UART (EUART) - Three 16-bit Timer/Counters: T0, T1 and T2 - 256 Bytes of Scratchpad RAM - 16/32-Kbyte On-chip Flash EEPROM In-System Programming through USB - Byte and Page (128 bytes) Erase and Write - 100k Write Cycles - 3-KbyteFlash EEPROM for Bootloader - Byte and Page (128 bytes) Erase and Write - 100k Write Cycles - 1-Kbyte EEPROM Data ( - Byte and Page (128 bytes) Erase and Write - 100k Write Cycles - On-chip Expanded RAM (ERAM): 1024 Bytes - Integrated Power Monitor (POR/PFD) to Supervise Internal Power Supply - USB 1.1 and 2.0...