DS87C550

www.maxim-ic.com DS87C550 EPROM High-Speed Microcontroller with ADC and PWM FEATURES § 87C52 Compatible - 8051 pin and instruction set compatible - Three 16-bit timer/counters - 256 bytes scratchpad RAM § On-Chip Memory - 8kB EPROM (OTP & Windowed Packages) - 1kB extra on-chip SRAM for MOVX access § On-Chip Analog-to-Digital Converter - Eight channels of analog input, 10-bit resolution - Fast conversion time § Pulse-Width Modulator Outputs - Four channels of 8-bit PWM - Channels cascadable to 16-bit PWM § Four Capture plus Three Compare Registers § 55 I/O Port Pins § New Dual Data Pointer Operation - Either data pointer can be incremented or decremented § ROMSIZE Feature - Sets effective on-chip ROM size from 0 - 8kB - Allows access to entire external memory map - Dynamically adjustable by software § High-Speed Architecture - 4 clocks/machine cycle (8051 = 12) - Runs DC to 33MHz clock rates - Single-cycle instruction in 121ns - New Stretch Cycle feature allows access to fast...