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Juno

TM

04 UR8HC007-004

Zero-Power

TM

Input Device and

Power Management IC

HID & SYSTEM MANAGEMENT PRODUCTS, H/PC IC FAMILY

DESCRIPTION

The Juno

TM

04 is a member of a

series of input device and power

management companion ICs for

RISC-based portable systems. On

a single IC, the Juno

TM

04 integrates

control of any 4-wire or 8-wire

resistive touch screen, keyboard

scanning, unique power

management capabilities, and

plenty of General Purpose Input /

Output (GPIO).

The Juno

TM

04 provides continuous

operation between 3 and 5V and

scans a fully programmable 8 X 16

keyboard matrix.The Zero-Power

TM

Juno

TM

04 will power down even

between key presses. Typical

power consumption is less than 1

碌A(chǔ), a first for embedded ICs.

The Juno

TM

04 is equipped with

Semtech鈥檚 proprietary protocol

developed specifically for RISC-

based handheld machines. It

interfaces the system via either

Asynchronous Serial (UART) or the

Serial Peripheral Interface (SPI).

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(chǔ)

鈥?Scans an 8 x 16 keyboard matrix

that supports Japanese, English

and European keyboards

鈥?Interfaces any four- or eight-wire

resistive touch screen

鈥?Operates continuously between 3

Volts and 5 Volts

鈥?Offers unique power management

capabilities that work in harmony

with Windows廬 CE power modes

鈥?Always runs in "Stop" mode without

data or event loss

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.

APPLICATIONS

鈥?Jupiter-class devices

鈥?Professional H/PCs

PIN ASSIGNMENTS

R2

R3

R4

R5

R6

R7

C0

C1

C2

C3

C4

C5

C6

C7

LEFT0/GIO60

LEFT1/GIO61

LEFT2/GIO62

LEFT3/GIO63

RIGHT0/GIO64

RIGHT1/GIO65

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?Provides programmable features

that allow for maximum design

differentiation without

customization

鈥?Cost-effective, reducing overall

system costs by integrating

features that would typically

require multiple components

鈥?Available in 80-pin 13 x 13 mm,

1.7mm high package to

accommodate slim designs

鈥?H/PCs

鈥?Web Phones, G3 Terminals

60

61

R1

R0

BOT3/RIGHT

BOT2/LEFT

BOT1/BOT

BOT0/TOP

TOP3/RIGHTEN

TOP2/LEFTEN

TOP1/BOTEN

TOP0/TOPEN

VDD

AVREF

AVSS

TOPAD

BOTAD

LEFTAD

RIGHTAD

C15

C14

GIO31/AD1

41

40

RIGHT2/GIO66

RIGHT3/GIO67

C8

C9

C10

C11

GIO00/LED0

GIO01/LED1

GIO02/LED2

GIO03/LED3

VSS

OSCO

OSCI

C12

C13

RESET

VSS1

LID

PWROK

MOSI/RXD

UR8HC007-004-FQ

80

GIO30/AD0

GIO43

GIO42/BLINKCANCEL

GIO41/SW1/鹵INT1

TOUCHINT

HSUS

DA1/PWM1/GIO51

DA0/PWM0/GIO50

21

1

GIO11

GIO10

ATN/CTS

SCLK/ISEL

MISO/TXD

SS/RTS

20

Juno is a trademark of Semtech Corporation. All

other trademarks belong to their respective

companies.

Copyright @1998-2001 Semtech Corporation

DOC8-007-004-DS-103

1

www.semtech.com

next

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