Product Summary

The DS87C520-WCL is a fast 8051 compatible microcontroller. It features a redesigned processor core without wasted clock and memory cycles. As a result, it executes every 8051 instruction between 1.5 and 3 times faster than the original for the same crystal speed. Typical applications of the DS87C520-WCL will see a speed improvement of 2.5 times using the same code and the same crystal. The DS87C520-WCL offers a maximum crystal speed of 33 MHz, resulting in apparent execution speeds of 82.5 MHz (approximately 2.5X).

Parametrics

DS87C520-WCL absolute maximum ratings: (1)Voltage on Any Pin Relative to Ground: –0.3V to +7.0V; (2)Operating Temperature: 0℃ to 70℃; (3)Storage Temperature: –55℃ to +125℃; (4)Soldering Temperature: 260℃ for 10 seconds.

Features

DS87C520-WCL features: (1)80C52 compatible; (2)8051 pin and instruction set compatible; (3)Four 8 bit I/O ports; (4)Three 16 bit timer/counters; (5)256 bytes scratchpad RAM; (6)Large On chip Memory; (7)16KB Program Memory; (8)1KB extra on chip SRAM for MOVX; (9)ROMSIZE Feature; (10)Selects internal ROM size from 0 to 16KB; (11)Allows access to entire external memory map; (12)Dynamically adjustable by software; (13)Useful as boot block for external FLASH.

Diagrams

DS87C520-WCL package outline

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
DS87C520-WCL
DS87C520-WCL
Maxim Integrated Products
8-bit Microcontrollers (MCU) EPROM/ROM High-Speed
Data Sheet
0-1: $21.42
1-25: $20.01
25-50: $19.54
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