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What is UR6HCPS2-SP40-FG?

This electronic component, produced by the manufacturer "Semtech Corporation", performs the same function as "Converts PS/2 Data to Serial or SPI".


UR6HCPS2-SP40-FG Datasheet PDF - Semtech Corporation

Part Number UR6HCPS2-SP40-FG
Description Converts PS/2 Data to Serial or SPI
Manufacturers Semtech Corporation 
Logo Semtech Corporation Logo 


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PS2AdaptTM UR6HCPS2-SP40
Converts PS/2 Data to Serial or SPI
HID & SYSTEM MANAGEMENT PRODUCTS, PROTOCOL INTERPRETER FAMILY
DESCRIPTION
The PS2AdaptTM is a Zero-PowerTM
protocol interpreter that can link an
AT/PS/2-compatible Human Input
Device (HID), such as a keyboard,
mouse, bar-code reader, etc. to any
host system equipped with either
Asynchronous Serial Interface (ASI)
or the Serial Peripheral Interface
(SPI).
The IC was designed specifically
for RISC-based portable devices
that are limited to ASI and SPI
interfaces. The PS2AdaptTM allows
designers to easily connect PS/2
devices to their system.
The UR6HCPS2-SP40 emulates all
the functions of the 8042 keyboard
controller which typically resides on
the AT/PS/2 motherboard. The
Zero-PowerTM PS2AdaptTM will power
down even between
key presses and bewteen mouse
reports. Typical power
consumption is only 1 µA operating
between 3-5 Volts.
The UR6HCPS2-SP40 boasts 4
external PS/2 ports that support the
hot-plug connection of an external
PS/2 keyboard or mouse,
including MouseWheel, 5-button
mice and touch screens in absolute
mode.
FEATURES
• Typically consumes less than 1 µA
• Interfaces the host system via
either Asynchronous Serial
Interface or Serial Peripheral
Interface (SPI)
• Jumper selectable interface and
Baud rate
• Offers four PS/2 ports for the hot-
plug connection of external
keyboards or mice including
MouseWheel, 5 button mice and
absolute mode touch screens
• Easy to use, one way
communication protocol
• Operating voltage between 3
and 5 Volts
• Custom versions available in
small or large quantities
• Small 7x7 mm package to
accommodate slim designs
APPLICATIONS
• H/PCs
• Web Phones
• PDAs
• System Legacy Support
PIN ASSIGNMENTS
24
25
17
16
E3DATA
RxD
TxD
SCLK
SDATA
_PWR_OFF
_CTS/_ATN
CONF0
UR6HCPS2-SP40-FG
LQFP
RES0
LED0
LED1
LED2
LED3
VSS
_OSCOUT
OSCIN
Each of four external PS/2 ports
also support more than 140 key
scan codes including international
language keys, internet keys, and
power keys. The PS2AdaptTM also
offers 4 reserved pins for LED
functions, their functions can be
customized by Semtech.
32
1
9
8
PS2Adapt is a trademark of Semtech Corp. All
other trademarks belong to their respective
companies.
Copyright Semtech, 2000-2001
DOC6-PS2-SP40-DS-102
1
www.semtech.com

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UR6HCPS2-SP40-FG equivalent
COMMUNICATIONS INTERFACE FOR THE UR6HCPS2-SP40
The UR6HCPS2-SP40 offers two
modes of serial communications:
"Synchronous Peripheral Interface"
(SPI) mode and the "Asynchronous
Serial Interface" (ASI) mode.
The diagrams below illustrate the SPI and ASI communications interfaces,
respectively.
SPI Communications Interface
The IC determines the mode of
communication with the Host during
power-up by reading the value of
the ASI/_SPI_SEL pin. If the pin is
tied high, the ASI mode is enabled.
If it is low, the SPI interface is
enabled.
Host
(master)
MOSI
MISO
SCLK
_SS1
_ATN
_SS2
The PS2AdaptTM implements the SPI
mode by single direction
communication that supports bit
rates up to 250 Kb/s. Several Hosts
and companion chips implement
the SPI protocol in order to
communicate with a wide range of
peripherals such as EEPROMs, A/D
converters, MCUs and other system
components.
PS2AdaptTM
(slave)
ASI Communications Interface
Slave 2
The UR6HCPS2-SP40 deploys the
_ATN as an additional hand-shake
signal in order to support low power
operation of the bus.
The PS2AdaptTM implements the ASI
mode at fixed preselected baud
rates: 300bps, 600bps, 1200bps,
9600bps, 19200bps, 31250bps and
62500bps, depending on the
Configuration pinsstate on power
up.
In ASI mode, the UR6HCPS2-SP40
deploys the _RTS & _CTS as
additional hand-shake signals in
order to support low power
operation of the bus.
_CTS
_RTS
RxD
TxD
HOST
_CTS
_RTS
RxD
TxD
UR6HCPS2-SP40
Copyright Semtech, 2002-2001
DOC6-PS2-SP40-DS-102
5
www.semtech.com


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