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Juno

TM

UR8HC007-001

Input Device and Power Management

Companion IC for Jupiter Devices

HID & SYSTEM MANAGEMENT PRODUCTS, H/PC IC FAMILY

DESCRIPTION

Juno

TM

01 is a member of a series of

multi-functional companion ICs for

Jupiter and other devices running

Microsoft

廬

Windows

廬

CE and

utilizing RISC-based processors.

The IC interfaces the system via

either asynchronous serial or the

Serial Peripheral Interface (SPI) and

provides keyboard scanning,

special general purpose I/O (GPIO)

and unique system power

management capabilities.

The Zero-Power

TM

Juno

TM

will power

down even between key presses.

Semtech鈥檚 proprietary circuitry

(patent pending) allows the IC to

power down even when PS/2

devices are connected and active.

Typical power consumption is less

than 1 碌A, a first for embedded ICs.

The Juno

TM

provides continuous

operation between 3 and 5V and

scans a fully programmable 8 X 16

keyboard matrix. The IC is equipped

with three Zero-Power

TM

PS/2 ports

for the hot-plug connection of an

external PS/2 keyboard and mouse

as well as an internal PS/2 mouse,

including those with MouseWheels.

In addition, the Juno

TM

offers special

general purpose I/O (GPIO), ideal

for use for lid functions, power

switches, ring indicators, docking

signals, battery measurement, LEDs,

etc.

The integration of features, many of

them programmable, on one IC

increases flexibility and reduces

component count and cost.

FEATURES

鈥?Typically consumes less than 1 碌A

鈥?Scans a fully programmable 8 X

16 matrix that supports Japanese,

English and European keyboards

鈥?Operates continuously between 3

and 5 Volts

鈥?Offers unique power management

capabilities that work in harmony

with Windows

廬

CE鈥檚 power modes

鈥?Always runs in 鈥淪top鈥?mode

without data or event loss

鈥?Provides three Zero-Power

TM

PS/2

ports for the hot-plug connection

of external keyboards/mice &

internal mouse, including

MouseWheels

鈥?Uses proprietary circuitry, so

鈥淪top鈥?mode is entered even when

PS/2 devices are connected and

active

鈥?Available in 1.7mm high package

to accommodate slim designs

PIN ASSIGNMENTS

鈥?Jupiter devices/Professional PCs

鈥?H/PCs, Web Phones, & G3

Terminals

鈥?GPIO pins provide interrupt at

both falling and rising edge of

signals, ideal for lid functions,

power, ring indicators, docking

signals, battery measurement, etc.

鈥?Has additional GPIO available for

LEDs, switches, etc.

鈥?Offers internal control of LCD

brightness/contrast, audio, etc. as

well as four 10-bit A/D channels

for power management monitoring

鈥?Cost-effective, reducing overall

system costs by integrating

features that would typically

require multiple additional

components

鈥?Provides programmable features

that allow for maximum design

differentiation without

customization

鈥?Other Juno

TM

versions offer control

of internal pointing device

APPLICATIONS

SS/RTS

WKUP

EPX6

EPX7

EPX8

EPX4

C0

C1

C2

C3

C4

C5

C6

C7

C8

C9

C10

C11

C12

C13

60

61

PWM1

PWM0

R7

R6

R5

R4

R3

R2

R1

R0

VDD

AVREF

AVSS

EPX10

EPX9

EPX1

EPX0

GIO33/AD3

GIO32/AD2

GIO31/AD1

41

40

C14

C15

EPX3

EPX2

GIO14/SW14

GIO15/SW15

GIO00/LED0

GIO01/LED1

GIO02/LED2

GIO03/LED3

VSS

OSCO

OSCI

PS2EN

HSUS

RESET

VSS1

LID

PWROK

MOSI/RXD

UR8HC007-001-FQ

80

1

GIO30/AD0

GIO17/SW17

GIO16/SW16

EX1CLK

EX0CLK

IPCLK

EX1DAT

EX0DAT

IPDAT

EPX5

DA

GIO21/SW1/鹵INT1

GIO20/SW0/鹵INT0

GIO13/SW13

GIO12/SW12

GIO11/SW11

GIO10/SW10

ATN/CTS

SCLK/ISEL

MISO/TXD

21

Juno is a trademark of Semtech Corporation. All

other trademarks belong to their respective

companies.

20

Copyright @1998-2001 Semtech Corporation

DOC8-007-001-DS-108

1

www.semtech.com

next

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