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UR5HCFJL-P Datasheet

  • UR5HCFJL-P

  • Zero-PowerTM Keyboard Encoder for Portable Systems

  • 20頁

  • SEMTECH   SEMTECH

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GreenCoder
TM
UR5HCFJL
Zero-Power
TM
Keyboard
Encoder for Portable Systems
HID & SYSTEM MANAGEMENT PRODUCTS, KEYCODER
TM
FAMILY
DESCRIPTION
The GreenCoder
TM
(UR5HCFJL) is
a unique, Zero-Power
TM
keyboard
encoder that provides an optimum
performance level for both battery-
operated and desktop systems.
The GreenCoder
TM
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 BIOS-
compatible 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 GreenCoder
TM
employs a
unique Self-Power Management
TM
method that reduces the power
consumption of the keyboard
sub-system to an unprecedented
minimum, transparently and without
user intervention. In 鈥淎ctive鈥?mode,
the encoder consumes less than 2
mA (Typ @5V). In 鈥淪leep鈥?mode the
encoder consumes less than 2 碌A(chǔ)
(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 碌A(chǔ) Typ
@5V) is entered for as long as
a periodic task is active. After a
programmed period of user
inactivity the GreenCoder
TM
gradually dims the LEDs for
further power savings.
The GreenCoder
TM
is ideal for use in
battery laptop/notebook designs
and Energy Star compliant
keyboards.
GreenCoder is a trademark of Semtech Corp. All
other trademarks belong to their respective
companies.
Copyright Semtech, 1997-2001
DOC5-FJL-DS-106
FEATURES
鈥?Optimized power-saving operation
with idle consumption of less
than 2 碌A(chǔ)
鈥?Programmable LED dimming for
further power savings
鈥?Ready to interface to Fujitsu's
7316, 7654,7656, and
1406 keyboards
鈥?3, 3.3 and 5 Volt operation
APPLICATIONS
鈥?Laptop/Notebook
鈥?Portable Equipment
鈥?Energy Star Compliant
鈥?Medical Instruments
鈥?Palmtops/ PDAs
鈥?Wakes-up only to respond to an
external event and for a minimum
period of time (2 mA current
consumption)
鈥?Provides interface for external
keyboard/keypad or other 8042-
compatible device
鈥?Custom versions available in small
or large quantities
PIN ASSIGNMENTS
NL
VX
DRV
_RESET
NC
NC
VCC
OSCI
OSCO
EKC1
R7
_RESET
DRV
VX
NL
R6
OPT
KD
KC
EKC
EKD
CL
C0
C1
C2
C3
C4
C5
C6
C7
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
VCC
OSCI
OSCO
EKC1
R7
SL
R5
R4
R3
R2
R1
R0
C8
C9
C10
C11
C12
C13
C14
C15
R6
OPT
KD
KC
EKC
EKD
CL
C0
C1
C2
C3
QFP
SL
R5
R4
R3
R2
R1
R0
C8
C9
C10
C11
DIP
6
OPT
KD
KC
EKC
EKD
CL
C0
C1
C2
C3
C4
7
1
R6
C4
NL
C5
VX
C6
NC
C7
DRV
NC
_RESET
GND
C15
VCC
C14
OSCI
C13
OSCO
C12
EKC1
NC
NC
40
39
12
PLCC
34
17
18
23
29
28
R7
SL
R5
R4
R3
R2
R1
R0
C8
C9
C10
1
www.semtech.com
NC
C5
C6
C7
GND
NC
C15
C14
C13
C12
C11

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