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UR8HC342-XX-FQ Datasheet

  • UR8HC342-XX-FQ

  • KEYBOARD CONTROLLER

  • 12頁(yè)

  • ETC

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ACPITroller
TM
342 UR8HC342
Robust 8042 Keyboard /
ACPI-Embedded Controller
HID & SYSTEM MANAGEMENT PRODUCTS, SYSTEM MGMT IC FAMILY
DESCRIPTION
The ACPITroller
TM
342 UR8HC342 is
a single IC that functions both as an
8042-type Human Input Device
Controller (HIDC) and an ACPI-
compliant Embedded Controller
(EC). The UR8HC342 provides the
typical functionality of an 8042-type
HID Controller with embedded key
and motion scanning. In addition,
the UR8HC342 functions as an
ACPI-compliant Embedded
Controller (EC) and SMBus host.
The IC achieves unparalleled
minimum power consumption
(typically less than 1碌A(chǔ)) due to
Semtech's patented Zero-Power鈩?/div>
technologies for both PS/2 ports
and the SMBus port - an industry
first. The ACPITroller鈩?342 can
power down even when devices are
connected and active. Based on
Semtech's patented Zero-Power鈩?/div>
technology, the UR8HC342 always
operates in the "STOP" mode,
independently of the configuration
and without any data or event
losses.
Using the UR8HC342, system
designers can implement systems
that take advantage of the SMBus,
the Smart Battery System, and the
ACPI specifications, all using a
single IC. The UR8HC342 can be
customized easily through an
extensive library of hardware and
firmware modules in order to
accommodate specialized
configurations at low production
cost.
FEATURES
鈥?Acts as an 8042 HID and ACPI
Embedded Controller
鈥?Typically consumes less than 1碌A(chǔ)
鈥?Two external PS/2 ports for external
keyboard and mouse with auto-
detect and hot-plug support
鈥?Patented Zero-Power鈩?operation of
all PS/2 ports and the SMBus port -
an industry first
鈥?Simultaneous operation of external
and internal input devices
鈥?AlphaMouse
TM
Pointing Devices
Manager provides Mousewheel
support- a first for an EC
鈥?Acts as a keyboard controller and
encoder for an 8 x 16 keyboard
matrix; supports all three keyboard
scan code sets
APPLICATIONS
鈥?Handhelds / Notebooks
鈥?Industrial / Vertical systems
PIN ASSIGNMENTS
GIO11/PWM2/GPE1
GIO10/PWM1/GPE0
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
VCC
VREF
AVSS
ROW7
ROW6
ROW5
ROW4
SMBEN
GIO22/AN2
GIO21/AN1
鈥?AlphaKey
TM
keyboard manager
enables matrix programming
鈥?Support of up to 6 ACPI GPE
interrupt inputs
鈥?100% compatible with the ACPI
specifications
鈥?SMBus compatible host complies
with version 1.0 of the SBS/SMBus
specifications
鈥?Firmware filters any dangerous
SMBus commands
鈥?Offers an Internal Virtual SMBus
Device (IVSD), GPIO, and 10-bit
A/D
鈥?Three-volt and five-volt operation
鈥?Customized versions available
鈥?Supports active PS/2 muliplexing
鈥?ACPI-compatible systems
鈥?Single Board Computers
80
61
60
GIO32/GPE2/PWBUTTON
GIO33/GPE3/PWBOVERRIDE
GIO34/GPE4
GIO35/GPE5
SMBINT
KEYWKUP
COL0
COL1
COL2
COL3
COL4
COL5
COL6
COL7
COL8
COL9
COL10
COL11
COL12
COL13
1
IVSD20/AN0
SCL0
SDA0
PS21CLK
PS20CLK
IMCLK
PS21DAT
PS20DAT
IMDAT
GIO13/DA2/PWM2
GIO12/DA1/PWM1
GIO37/GPE7/DOCK
GIO36/GPE6/LID
IOW
IOR
8042S
A2
ACPIS
SCI
KBINIT
UR8HC342-FQ
20
21
A20GATE
IRQ12
IRQ1
CNVSS
RESET
SYSSUS
SWI
XIN
XOUT
VSS
GIO03/KATAKANALED
GIO02/CAP_LOCK
GIO01/NUM_LOCK
IGIO00/SCROLL_LOCK
ROW3
ROW2
ROW1
ROW0
COL15
COL14
41
40
ACPITroller is a trademark of Semtech Corp. All
other trademarks belong to their respective
companies.
Copyright Semtech 2000-2001
DOC8-342-DS-104
1
www.semtech.com

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