COM20019I 3.3V
Cost-Competitive ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM
Features
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New Features
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Data Rates up to 312.5 Kbps |
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Programmable Reconfiguration Times |
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28 Pin PLCC and 48 Pin TQFP Packages; Lead-Free RoHS Compliant Packages Also Available |
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Ideal for Industrial/Factory/Building Automation and
Transportation Applications |
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Deterministic (ANSI 878.1) Token-Passing ARCNET Protocol |
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Minimal Microcontroller and Media Interface
Logic Required |
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Flexible for Use With All Microcontrollers or Microprocessors |
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Automatically Detects Type of Microcontroller
Interface |
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2K x 8 On-Chip Dual Port RAM |
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Command Chaining for Packet Queuing |
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Sequential Access to Internal RAM |
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Software Programmable Node ID |
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Eight 256-Byte Pages Allow Four Pages TX
and RX Plus Scratch-Pad Memory |
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Next ID Readable |
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Internal Clock Scaler for Adjusting Network Speed |
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Operating Temperature Range of -40°C
to +85°C |
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3.3V Power Supply with 5V Tolerant I/O |
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Self-Reconfiguration Protocol |
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Supports up to 255 Nodes |
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Supports Various Network Topologies (Star,
Tree, Bus...) |
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CMOS, Single +3.3V Supply |
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Duplicate Node ID Detection |
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Powerful Diagnostics |
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Receive All Packets Mode |
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Flexible Media Interface:
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RS485 Differential Driver Interface
for Cost Competitive, Low Power, High Reliability |
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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 |
General Description
SMSC's COM20019I 3V is a member of the family of Embedded ARCNET Controllers from Standard Microsystems Corporation. The device is a general purpose communications controller for networking microcontrollers and intelligent peripherals in industrial, automotive, and embedded control environments using an ARCNET protocol engine. The flexible microcontroller and media interfaces, eight-page message support, and extended temperature range of the COM20019I 3V make it the only true network controller optimized for use in industrial and embedded applications. Using an ARCNET protocol engine is the ideal solution for embedded control applications because it provides a deterministic token-passing protocol, a highly reliable and proven networking scheme, and a data rate of up to 312.5 Kbps when using the COM20019I 3V.
 COM20019I 3.3V
Data Sheet, Application Notes,
Drivers and Design Tools
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