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UR5CSPI-SA-FN Datasheet

  • UR5CSPI-SA-FN

  • ENCODER|LDCC|44PIN|PLASTIC

  • 22頁

  • ETC

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USAR SPICoder
TM
SA UR5HCSPI-SA
Zero-Power Keyboard Encoder
& Power Management IC for
Intel StrongARM-based H/PCs
Description
The USAR SPICoder
TM
UR5HCSPI-
SA, a member of USAR鈥檚 H/PC ICs
family, is a keyboard encoder and
power management IC designed
specifically for Handheld PCs
(H/PCs), Web Phones and other
systems that run Microsoft
廬
Windows CE
廬
and utilize the Intel
StrongARM
TM
processor.
The UR5HCSPI-SA offers several
features necessary to H/PCs,
including low power consumption,
real estate-saving size, and special
keyboard modes.
The IC operates at Zero-Power
(less than 2碌A(chǔ) @ 3V), providing the
the host system both power
management and I/O flexibility, with
minimal battery drainage.
TM
A Semtech Company
USAR H/PC ICs family
product specifications
Features
鈥?SPI-compatible keyboard encoder
and power management IC with
other interfaces available
鈥?Ideal for use with the Intel
StrongARM
TM
processor
鈥?Operates at patented Zero-Power
TM
鈥?typically consuming less than
2碌A(chǔ), between 3-5V
鈥?Offers overall system power
management capabilities
鈥?Implements high-reliability two-way
protocol
鈥?Fully compatible to the Windows
CE
廬
keyboard specification
鈥?Works in harmony with the power
management modes of Win CE
廬
鈥?Provides special modes of
operation for H/PCs, including
programmable 鈥渨ake-up鈥?keys
鈥?Scans an 8 x 14 matrix and
controls discrete switches and LED
indicators
鈥?Compatible with 鈥渟ystem-on silicon鈥?/div>
CPUs for H/PCs
鈥?Available in small 10mm by 10mm,
44-pin QFP package
Applications
鈥?StrongARM
TM
Handheld PCs
鈥?Windows CE
廬
Platforms
鈥?Web Phones
Pin Assignments
Special keyboard modes and built-
in power management features
allow the USAR SPICoder
TM
SA to
operate in harmony with the power
management modes of Windows
CE
廬
, resulting in greater user
flexibility, and longer battery life.
The IC will scan, debounce and
encode an 8 x 14 keyboard matrix.
It communicates with the Host over
the SPI channel, implementing a
high-reliability two-way protocol.
The UR5HCSPI-SA also offers
programmable features for wake-
up keys and general purpose I/O
pins. The UR5HCSPI-SA is utilized
in several Intel reference designs.
PWR_OK
NC0
OSCO
OSCI
Vcc
NC
NC
_RESET
_WKU
Vx
C7
鈥?Personal Digital Assistants (PDAs)
鈥?Wearable Computers
鈥?Internet Appliance
_ATN
_SS
SCK
MOSI
MISO
XSW
SW0
C8
C9
C10/WUKO
C11/_LID
6
23
22
33
34
QFP
NC
C12
C13
GIO0
_IOTEST
Vss
NC
R7
R6
R5
R4
44
1
12
11
C5
C4
C3
C2
C1
C0
R0
R1
R2
R3
R4
7
C6
C7
Vx
NC
_WKU
_RESET
Vcc
OSCI
OSCO
NC0
NC
1
40
39
12
PLCC
34
17
18
23
29
28
_PWR_OK
_ATN
_SS
SCK
MOSI
MISO
XSW
SW0
C8
C9
C10/WUKO
C6
C5
C4
C3
C2
C1
C0
R0
R1
R2
R3
Copyright 1999-2000 USAR Systems, Inc.
All rights reserved.
USAR 鈥?A Semtech Company
Datasheet
DOC5-SPI-SA-DS-107
1
NC
R5
R6
R7
Vss
NC
_IOTEST
GIO0
C13
C12
C11/_LID

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