UR5HCSPI-FB View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'UR5HCSPI-FB' PDF : 20 Pages View PDF
SPICoderTM UR5HCSPI
Zero-PowerTM Keyboard Encoder &
Power Management IC for H/PCs
HID & SYSTEM MANAGEMENT PRODUCTS, H/PC IC FAMILY
DESCRIPTION
The SPICoderTM UR5HCSPI
keyboard encoder and power
management IC is designed
specifically for handheld PCs
(H/PCs). The off-the-shelf
UR5HCSPI will readily work with
CPUs designed for Windows CE®,
saving OEMs significant
development time and money as
well as minimizing time-to-market for
the new generations of handheld
products.
Three main design features of the
UR5HCSPI make it the ideal
companion for the new generation
of Windows CE® -compatible,
single-chip computers: low-power
consumption; real estate-saving
size; and special keyboard modes.
FEATURES
• SPI-compatible keyboard encoder
and power management IC with
other interfaces available
• Compatible with Windows CE®
keyboard specification
• Zero-PowerTM — typically
consuming less than 2µA,
between 3-5V
• Offers overall system power
management capabilities
APPLICATIONS
• StrongARMTM Handheld PCs
• Windows CE® Platforms
• Web Phones
PIN ASSIGNMENTS
• Compatible with “system-on silicon”
CPUs for H/PCs
• Special keyboard and power
management modes for H/PCs,
including programmable “wake-up”
keys
• Scans, debounces, and encodes
an 8 x 12 matrix and controls
discrete switches and LED
indicators
• Custom versions available
• Personal Digital Assistants (PDAs)
• Wearable Computers
• Internet Appliance
“Quasi” Zero-PowerTM consumption
(less than 2µA @ 3V), a must for
H/PCs, provides the host system
with both power management and
I/O flexibility, with almost no battery
drainage.
Finally, special keyboard modes
and built-in power management
features allow the SPICoderTM to
operate in harmony with the power
management modes of Windows
CE®, resulting in more user flexibility
and longer battery life.
33
23
34
_PWR_OK
22 NC
NC0
LED2
OSCO
LED1
OSCI
Vcc
UR5HCSPI-FB
LED0
_IOTEST
NC
QFP
Vss
NC
NC
_RESET
R7
_WKU
R6
Vx
R5
C7
44
1
R4
12
11
6
C5 7
40
1
39
C4
C3
C2
C1
UR5HCSPI-FN
C0 12
PLCC
34
R0
R1
R2
R3
R4 17
29
18
23
28
_PWR_OK
_ATN
_SS
SCK
MOSI
MISO
XSW
SW0
C8
C9
C10/WUKO
The UR5HCSPI also offers
programmable features for wake-up
keys and general purpose I/O pins.
SPICoder is a trademark of Semtech Corp. All
other trademarks belong to their respective
companies.
Copyright Semtech 1997-2001
1
DOC5-SPI-DS-117
www.semtech.com
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