Atmel 89C51RE2
The 128 Kbytes Flash memory can be programmed either in parallel mode or in serial mode with the ISP capability or with software. The programming voltage is internally generated from the standard VCC pin.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 sta...