The DS80C310 is a fast 80C31/80C32-compatible microcontroller. It features a redesigned processor core without wasted clock and memory cycles. As a result, it executes every 8051 instruction between 1.5x and 3x faster than the original architecture for the same crystal speed. Typical applications have a speed
improvement of 2.5x using the same code and the same crystal. The DS80C310 offers a 33MHz maximum crystal speed, resulting in apparent execution speeds of 82.5MHz (approximately 2.5x).
The DS80C310 is pin compatible with the standard 80C32 and includes standard resources such as three timer/counters, 256 bytes of RAM, and a serial port. It also provides dual data pointers (DPTRs) to speed block data memory moves. It also can adjust the speed of MOVX data memory access between two and nine machine cycles for flexibility in selecting external memory and peripherals. The DS80C310 offers upward compatibility with the DS80C320.
Key Features
80C32 Compatible
8051 Pin and Instruction Set Compatible
Full Duplex Serial Port
Three 16-Bit Timer/Counters
256 Bytes Scratchpad RAM
Multiplexed Address/Data Bus
Addresses 64kB ROM and 64kB RAM
High-Speed Architecture
4 Clocks/Machine Cycle (8051 = 12)
Runs DC to 33 MHz Clock Rates
Single-Cycle Instruction in 121ns
Dual Data Pointer
Optional Variable Length MOVX to Access Fast/Slow RAM/Peripherals
10 Total Interrupt Sources with 6 External
Internal Power-On Reset Circuit
Upwardly Compatible with the DS80C320
Available in 40-Pin Plastic DIP, 44-pin PLCC, and 44-pin TQFP
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