COM20020 3.3V
COM20020 3.3V ULANC
Universal Local Area Network Controller
with 2K x 8 On-Board RAM
FEATURES
New Features
Eight, 256 Byte Pages Allow Four Pages TX
and RX Plus Scratch-Pad Memory
-
Data Rates up to 5 Mbps
-
Programmable Reconfiguration Times
Next ID Readable
24 Pin DIP, 28 Pin PLCC Package
Internal Clock Scaler and Clock Multiplier for
Adjusting Network Speed
Ideal for Industrial/Factory/Building
Automation and Transportation
Applications
o
Operating Temperature Range of -40 C to
o
+85 C
Self-Reconfiguration Protocol
Deterministic, (ANSI 878.1), Token Passing
ARCNET Protocol
Supports up to 255 Nodes
Minimal Microcontroller and Media
Interface Logic Required
Supports Various Network Topologies (Star,
Tree, Bus...)
Flexible Interface For Use With All
Microcontrollers or Microprocessors
CMOS, Single +3.3V Supply
Duplicate Node ID Detection
Automatically Detects Type of
Microcontroller Interface
Powerful Diagnostics
Receive All Packets Mode
2Kx8 On-Chip Dual Port RAM
Command Chaining for Packet Queuing
Sequential Access to Internal RAM
Software Programmable Node ID
Flexible Media Interface:
-
Traditional Hybrid Interface For Long
Distances up to Four Miles at 2.5Mbps.
-
RS485 Differential Driver Interface For
Low Cost, Low Power, High Reliability
ORDERING INFORMATION
Order Numbers:
COM20020ILJP3V
28 PLCC Package
COM20020IP3V
24 DIP Package
DISCONTINUED DATASHEET
