COM20019I 3.3V Rev.C
Cost Competitive
ARCNET (ANSI 878.1)
Controller with 2K x 8
On-Chip RAM
Datasheet
Product Features
New Features:
−
Data Rates up to 312.5 Kbps
−
Programmable Reconfiguration Times
Eight, 256 Byte Pages Allow Four Pages TX and
RX Plus Scratch-Pad Memory
Next ID Readable
Internal Clock Scaler for Adjusting Network
Speed
Operating Temperature Range of -40
o
C to +85
o
C
3.3V power supply with 5V tolerant I/O
Self-Reconfiguration Protocol
Supports up to 255 Nodes
Supports Various Network Topologies (Star,
Tree, Bus...)
CMOS, Single +3.3V Supply
Duplicate Node ID Detection
Powerful Diagnostics
Receive All Packets Mode
Flexible Media Interface:
−
RS485 Differential Driver Interface For Cost
Competitive, Low Power, High Reliability
28 Pin PLCC and 48 Pin TQFP packages; Lead-
Free RoHS Compliant packages also available
Ideal for Industrial/Factory/Building Automation
and Transportation Applications
Deterministic, (ANSI 878.1), Token Passing
ARCNET Protocol
Minimal Microcontroller and Media Interface
Logic Required
Flexible Interface For Use With All
Microcontrollers or Microprocessors
Automatically Detects Type of Microcontroller
Interface
2Kx8 On-Chip Dual Port RAM
Command Chaining for Packet Queuing
Sequential Access to Internal RAM
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. 10-31-06
DATASHEET
SMSC [ SMSC CORPORATION ]
