COM20019I 3.3V Rev.C Cost Competitive ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM Datasheet Product Features New Features: Eight, 256 Byte Pages Allow Four Pages TX and RX Plus Scratch-Pad Memory Data Rates up to 312.5 Kbps Programmable Reconfiguration Times Next ID Readable 28 Pin PLCC and 48 Pin TQFP packages Lead- Internal Clock Scaler for Adjusting Network Free RoHS Compliant packages also available Speed o o Ideal for Industrial/Factory/Building Automation Operating Temperature Range of -40 C to +85 C and Transportation Applications 3.3V power supply with 5V tolerant I/O Deterministic, (ANSI 878.1), Token Passing Self-Reconfiguration Protocol ARCNET Protocol Supports up to 255 Nodes Minimal Microcontroller and Media Interface Supports Various Network Topologies (Star, Logic Required Tree, Bus...) Flexible Interface For Use With All CMOS, Single +3.3V Supply Microcontrollers or Microprocessors Duplicate Node ID Detection Automatically Detects Type of Microcontroller Interface Powerful Diagnostics 2Kx8 On-Chip Dual Port RAM Receive All Packets Mode Command Chaining for Packet Queuing Flexible Media Interface: Sequential Access to Internal RAM RS485 Differential Driver Interface For Cost Competitive, Low Power, High Reliability Software Programmable Node ID ORDERING INFORMATION Order Number(s): COM20019I 3VLJP for 28 pin PLCC * package COM20019I 3V-DZD for 28 pin PLCC * Lead-Free RoHS Compliant package COM20019I 3V-HD for 48 pin TQFP package COM20019I 3V-HT for 48 pin TQFP Lead-Free RoHS Compliant package * TQFP package is recommended for new design SMSC COM20019I 3.3V Rev.C Page 1 Rev. 11-07-08 DATASHEET Cost Competitive ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM 80 ARKAY DRIVE, HAUPPAUGE, NY 11788 (631) 435-6000, FAX (631) 273-3123 Copyright 2008 SMSC or its subsidiaries. All rights reserved. Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information sufficient for construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office to obtain the latest specifications before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor devices any licenses under any patent rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC s standard Terms of Sale Agreement dated before the date of your order (theTerms of Sale Agreemen). The product may contain design defects or errors known as anomalies which may cause the product s functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale Agreement, may be obtained by visiting SMSCs website at