Datasheet Microchip COM20020i3.3V — 数据表

COM20020I 3.3V Rev.E 5Mbps ARCNET (ANSI
878.1) Controller with
2K x 8 On-Chip RAM Datasheet Product Features
Вѓ Вѓ 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 o
o
Operating Temperature Range of -40 C to +85 C Ideal for Industrial/Factory/Building Automation
and Transportation Applications Вѓ 3.3V power supply with 5V tolerant I/O Вѓ Self-Reconfiguration Protocol Вѓ Deterministic, (ANSI 878.1), Token Passing
ARCNET Protocol Вѓ Supports up to 255 Nodes Вѓ Minimal Microcontroller and Media Interface
Logic Required Вѓ Supports Various Network Topologies (Star, Tree,
Bus.) Вѓ Flexible Interface For Use With All
Microcontrollers or Microprocessors Вѓ CMOS, Single +3.3V Supply Вѓ Duplicate Node ID Detection New Features:
-Data Rates up to 5 Mbps
-Programmable Reconfiguration Times Вѓ Вѓ 28 Pin PLCC and 48 Pin TQFP packages;
Lead-Free RoHS Compliant packages also
available Вѓ Automatically Detects Type of Microcontroller
Interface Вѓ Powerful Diagnostics Вѓ Receive All Packets Mode Вѓ 2Kx8 On-Chip Dual Port RAM Вѓ Flexible Media Interface: Вѓ Command Chaining for Packet Queuing Вѓ Sequential Access to Internal RAM Вѓ Software Programmable Node ID -Traditional Hybrid Interface For Long Distances
at 2.5Mbps -RS485 Differential Driver Interface For Low
Cost, Low Power, High Reliability ORDERING INFORMATION
Order Number(s):
COM20020I 3VLJP for 28 pin PLCC * package
COM20020I 3V-DZD for 28 pin PLCC * Lead-Free RoHS Compliant package …