Datasheet Microchip COM20020i — 数据表

COM20020I Rev D
5Mbps ARCNET (ANSI
878.1) Controller with
2K x 8 On-Chip RAM Datasheet Product Features
Вѓ Вѓ New Features for Rev. D Вѓ -Data Rates up to 5 Mbps
-Programmable Reconfiguration Times Eight, 256 Byte Pages Allow Four Pages TX
and RX Plus Scratch-Pad Memory Вѓ Next ID Readable Вѓ Internal Clock Scaler and Clock Multiplier for
Adjusting Network Speed Вѓ Operating Temperature Range of -40oC to
+85oC 28 Pin PLCC and 48 Pin TQFP Packages;
Lead-free RoHS Compliant Packages also
Available Вѓ Ideal for Industrial/Factory/Building
Automation and Transportation Applications Вѓ Deterministic, (ANSI 878.1), Token Passing
ARCNET Protocol Вѓ Minimal Microcontroller and Media Interface
Logic Required Вѓ Flexible Interface For Use With All
Microcontrollers or Microprocessors Вѓ Self-Reconfiguration Protocol Вѓ Supports up to 255 Nodes Вѓ Supports Various Network Topologies (Star,
Tree, Bus.) Вѓ CMOS, Single +5V Supply Вѓ Duplicate Node ID Detection Вѓ Automatically Detects Type of
Microcontroller Interface Вѓ Powerful Diagnostics Вѓ Receive All Packets Mode Вѓ 2Kx8 On-Chip Dual Port RAM Вѓ Вѓ Command Chaining for Packet Queuing Вѓ Sequential Access to Internal RAM Вѓ Software Programmable Node ID Flexible Media Interface:
-Traditional Hybrid Interface For Long
Distances up to Four Miles at 2.5 Mbps
-RS485 Differential Driver Interface For Low
Cost, Low Power, High Reliability ORDERING INFORMATION
Order Numbers:
COM20020ILJP for 28 pin PLCC package …