89C51RE2
Description
AT89C51RE2 is a high performance CMOS Flash version of the 80C51 CMOS single chip 8-bit microcontroller. It contains a 128 Kbytes Flash memory block for program.
Key Features
- 80C52 Compatible - 8051 Instruction Compatible - Four 8-bit I/O Ports (44 Pins Version) - Three 16-bit Timer/Counters - 256 bytes Scratch Pad RAM - 11 Interrupt Sources With 4 Priority Levels
- ISP (In-System Programming) Using Standard VCC Power Supply
- Integrated Power Monitor (POR/PFD) to Supervise Internal Power Supply
- Boot ROM Contains Serial Loader for In-System Programming
- High-speed Architecture - In Standard Mode: 40 MHz (Vcc 2.7V to 5.5V, Both Internal and External Code Execution) 60 MHz (Vcc 4.5V to 5.5V and Internal Code Execution Only) - In X2 Mode (6 Clocks/Machine Cycle) 20 MHz (Vcc 2.7V to 5.5V, Both Internal and External Code Execution) 30 MHz (Vcc 4.5V to 5.5V and Internal Code Execution Only)
- 128K bytes On-chip Flash Program/Data Memory - 128 bytes Page Write with auto-erase - 100k Write Cycles
- On-chip 8192 bytes Expanded RAM (XRAM) - Software Selectable Size (0, 256, 512, 768, 1024, 1792, 2048, 4096, 8192 bytes)
- Dual Data Pointer
- Extended stack pointer to 512 bytes
- Variable Length MOVX for Slow RAM/Peripherals
