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UR5HCFJL-P

Semtech Corporation
Part Number UR5HCFJL-P
Manufacturer Semtech Corporation
Description Zero-PowerTM Keyboard Encoder for Portable Systems
Published Apr 16, 2005
Detailed Description GreenCoderTM UR5HCFJL Zero-PowerTM Keyboard Encoder for Portable Systems HID & SYSTEM MANAGEMENT PRODUCTS, KEYCODERTM FA...
Datasheet PDF File UR5HCFJL-P PDF File

UR5HCFJL-P
UR5HCFJL-P

Overview
GreenCoderTM UR5HCFJL Zero-PowerTM Keyboard Encoder for Portable Systems HID & SYSTEM MANAGEMENT PRODUCTS, KEYCODERTM FAMILY DESCRIPTION The GreenCoder (UR5HCFJL) is a unique, Zero-PowerTM keyboard encoder that provides an optimum performance level for both batteryoperated and desktop systems.
TM FEATURES • Optimized power-saving operation with idle consumption of less than 2 µA • Programmable LED dimming for further power savings • Ready to interface to Fujitsu's 7316, 7654,7656, and 1406 keyboards • 3, 3.
3 and 5 Volt operation APPLICATIONS • Laptop/Notebook • Portable Equipment • Energy Star Compliant • Medical Instruments • Palmtops/ PDAs • Wakes-up only to respond to an external event and for a minimum period of time (2 mA current consumption) • Provides interface for external keyboard/keypad or other 8042compatible device • Custom versions available in small or large quantities The GreenCoderTM scans, debounces and encodes an 8 X 16 keyboard matrix, and will provide direct drive for 3 LEDs and two bi-directional channels for communication with a BIOScompatible system as well as an additional keyboard-compatible device.
It fully supports all three PS/2 scan code sets and will implement up to three alternate keyboard layers for full 101/102 functionality.
The GreenCoderTM employs a unique Self-Power ManagementTM method that reduces the power consumption of the keyboard sub-system to an unprecedented minimum, transparently and without user intervention.
In “Active” mode, the encoder consumes less than 2 mA (Typ @5V).
In “Sleep” mode the encoder consumes less than 2 µA (Typ @5V) The encoder can even nap between keystrokes and therefore it is rarely active and rarely consumes significant levels of power.
A "stand-by" mode (600 µA Typ @5V) is entered for as long as a periodic task is active.
After a programmed period of user inactivity the GreenCoderTM gradually dims the LEDs for further power savings.
The GreenCoderTM is ideal for use in battery laptop/notebook de...


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