AT89C5131A-L

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 Full Speed Compliant Module with Interrupt on Transfer Completion – Endpoint 0 for Control Transfers: 32-byte FIFO – 6 Programmable Endpoints with In or Out Directions and with Bulk, Interrupt or Isochronous Transfers Endpoint 1, 2, 3: 32-byte FIFO Endpoint 4, 5: 2 x 64-byte FIFO with Double Buffering (Ping-pong Mode) Endpoint 6: 2 x 512-byte FIFO with Double Buffering (Ping-pong Mode) – Suspend/Resume Interrupts – Power-on Reset and USB Bus Reset – 48 MHz DPLL for Full-speed Bus Operation – USB Bus Disconnection on Microcontroller Request 5 Channels Programmable Counter Array (PCA) with 16-bit Counter, High-speed Output, Compare/Capture, PWM and Watchdog Timer Capabilities Programmable Hardware Watchdog Timer (One-time Enabled with Reset-out): 50 ms to 6s at 4 MHz Keyboard Inter...