DS87C530 PDF File ( Datasheet )

DS87C530, DS83C530 EPROM, ROM Microcontrollers with Real-Time Clock www.maxim-ic.com FEATURES 80C52 Compatible 8051 Instruction-Set Compatible Four 8-Bit I, O Ports Three 16-Bit Timer, Counters 256 Bytes Scratchpad RAM Large On-Chip Memory 16kB EPROM (OTP) 1kB Extra On-Chip SRAM for MOVX ROMSIZE Features Selects Effective On-Chip ROM Size from 0 to 16kB Allows Access to Entire External Memory Map Dynamically Adjustable by Software Useful as Boot Block for External Flash Nonvolatile Functio

www.dalsemi.com DS87C530, DS83C530 EPROM, ROM Micro with Real Time Clock FEATURES 80C52-compatible - 8051 instruction set-compatible - Four 8-bit I, O ports - Three 16-bit timer, counters - 256 bytes scratchpad RAM Large on-chip memory - 16 kB EPROM (OTP) - 1 kB extra on-chip SRAM for MOVX ROMSIZE Feature - Selects effective on-chip ROM size from 0 to 16kB - Allows access to entire external memory map - Dynamically adjustable by software - Useful as boot block for external Flash Nonvolatile Fu