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UR8HC342-FQ Datasheet

  • UR8HC342-FQ

  • USAR ACPITrollerTM 342 Robust 8042 Keyboard / ACPI-Embedded ...

  • 12頁

  • SEMTECH   SEMTECH

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USAR ACPITroller
TM
342 UR8HC342
USAR ACPITroller
TM
342
Robust 8042 Keyboard /
ACPI-Embedded Controller
Description
The USAR 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
USAR's patented Zero-Power鈩?/div>
technologies for both PS/2 ports
and the SMBus port - an industry
first. The USAR ACPITroller鈩?342
can power down even when
devices are connected and active.
Based on USAR's patented Zero-
Power鈩?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.
Copyright 2000 USAR Systems, Inc. All rights
reserved.
A Semtech Company
Preliminary
USAR System Management family
product specifications
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
GPE6/IVSD1:1/PBOVR
GPE5/IVSD1:0/PB
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
VCC
VREF
AVSS
ROW7
ROW6
ROW5
ROW4
SMBEN
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 Internal Virtual SMBus
Devices (IVSDs) such as GPIO or
10-bit A/D
鈥?Three-volt and five-volt operation
鈥?Customized versions available
鈥?ACPI-compatible systems
鈥?Single Board Computers
IVSD2:1/AN1
80
61
60
GPE2
1
IVSD2:0/AN0
SMBC0
SMBD0
PS21CLK
PS22CLK
IMCLK
PS21DAT
PS22DAT
IMDAT
IVSD1:3
IVSD1:2
GPE1/DOCK
GPE0/LID
IOW
IOR
KCS
A2
ECS
SCI
KBRST
UR8HC342-FQ
SMBINT
KEYWKUP
COL0
COL1
COL2
COL3
COL4
COL5
COL6
COL7
COL8
COL9
COL10
COL11
COL12
COL13
20
21
A20GATE
IRQ12
IRQ1
CNVSS
RESET
SYSSUS
SWI
XIN
XOUT
VSS
SCRLK/IVSD0:3
NUMLK/IVSD0:2
CAPSLK/IVSD0:1
KATAKANA/IVSD0:0
ROW3
ROW2
ROW1
ROW0
COL15
COL14
41
40
USAR 鈥?A Semtech Company
Datasheet
DOC8-342-DS-101
1

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