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RHK.F95 1. Portable Computer system Design and Packaging Issues. Professor Jong Won Park ... Global Markets for Portable Computers $ Billions. RHK.F95 3 ...

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Portable computer system design and packaging issues l.jpg

Portable Computer system Design and Packaging Issues

Professor Jong Won Park

2000년 봄



Portability issues l.jpg
Portability Issues

  • It뭩 the power, stupid!!

  • Batteries

    • Weight, volume determine lifetime

      • 20 W-hrs per pound

      • 2 pounds, 10 hours = 2 W power consumption!

    • Power consumption: CV2

      • Reduce C by increased VLSI integration and MCM technology

      • Reduce V to lower operating voltages: 5 V to 3.3V to 2.5V and below

      • Reduce ?by reducing clock frequency, standby and suspend power modes

      • Intelligent operation: spin-down disk drives


Battery technology l.jpg

200

150

Li Poly

100

Li Ion

Watt-hours per kg

Dell Latitude

50

NiMH

NiCd

Apple

Powerbooks

Lighter

0

0

50

100

150

200

250

300

Watt-hours per liter

Smaller

Battery Technology

  • Other Battery Types:

    • Lead Acid

    • Nickel Zinc

    • Rechargeable Alkaline-Manganese

    • Zinc Air


Battery technology5 l.jpg
Battery Technology

  • Nickel-Cadmium

    • Most widely used

    • Require cylindrical steel cylinders containing hazardous liquid electrolytes

  • Lithium Polymer

    • Solid electrolyte

    • Formed to fill available space

Cadmium-oxide Anode

Liquid Sodium-hydroxide

electrolyte between coils

Nickel Hydroxide Cathode

Sealing tape

Lithium alloy anode

Solid polymer electrolyte

Carbon-oxide cathode

Sealing tape


Smart battery specification l.jpg
Smart Battery Specification

  • Collaboration of Duracell and Intel

  • Better visibility of battery state:

    • How much operating time is left?

    • Enough power to perform certain tasks, like disk spin-up?

    • Universal smart battery chargers, independent of battery chemistry

    • State information, like number of recharges, stored with battery


Smart battery specification7 l.jpg
Smart Battery Specification

Power

Supply

Vcc,

+12V,

-12V

DC (unregulated/battery)

Vbatt

Thermistor

System

Host

Smart

Battery

Smart

Charger

AC-DC

Converter

AC

SMBus

Critical Events

Critical Events

Charging Voltage &

Current Requests

Battery Data &

Status Requests


Some pda product parameters l.jpg
Some PDA Product Parameters

Batteries

Display

Mem Size

MHz

Proc

# Hrs

Type

lbs.

Pixels

sq in

128 KBytes

640 KBytes

1 MByte

1 MByte

640 KBytes

20

20

20

7.4

20

Z-80

ARM

ARM

8086

ARM

40

6-8

50

100

20

0.9

0.9

1.25

1.0

0.9

10.4

11.2

11.8

12.4

11.2

240x320

240x336

240x320

320x256

240x336

Armstad Pen

Pad PDA 600

Apple Newton

Message Pad

Apple Newton

110 Pad

Casio Z-7000

Sharp Expert

Pad

3 AAs

4 AAAs

4 AAs

3 AAs

4 AAAs


Some pda product parameters9 l.jpg
Some PDA Product Parameters

Batteries

Display

Mem Size

MHz

Proc

# Hrs

Type

lbs.

Pixels

sq in

1 MByte

4-12 MBytes

4-16 MBytes

8

20

33+

8086

Hobbit

486

100

1-6

1-6

1.0

2.2

5-10

12.4

25.7

40

320x256

640x480

640x480

Tandy Z-550

Zoomer

AT&T EO 440

Pers Comm

Portable PC

3 AAs

NiCd

NiCd


Anatomy of a pda l.jpg
Anatomy of a PDA

3.3V LCD

Panel

Maxim 722

3.3V LCD

Regulator

Motorola

S371019

A/D Converter

Pen

Digitizer

LM358

Amp

PCMCIA

Slot

Casio 킦D95130

CPU, Display Cntl

7.37 MHz

Oscillator

Casio MBC 25173

PCMCIA Cntl

Uart

RTC

Audio

A/D Cntl

System Peripherals

Maxim 223

Lvl Converter

Serial

Port

4M x 8

Mask ROM

([email protected])

8086 Core

IR Photodector

IR Emitting LED

Sys/User Mem

1M x 8

([email protected])

NEC 65043

4400 Gates

4 KBits RAM

Core Logic

밎lue Logic

Casio/Tandy Zoomer

135 mW heavy processing

55 mW in low power idle

0.5 mW when 뱋ff


Processor cores for pdas l.jpg
Processor Cores for PDAs

  • Intel

    • Polar chip set

      • 386 processor core

      • System logic and peripheral interfaces

      • Runs Windows or DOS

    • Draco chip set

      • 2 chip system based on low power 486

  • AMD Elan

    • 386SC, incorporates all logic for simple PDA on chip

  • Motorola Dragon

    • 68349 = 68020 core + 6K on-chip memory + system logic

    • Astro PDA system logic chip


Other commercial developments l.jpg
Other Commercial Developments

  • NEC V800 Architecture

    • 16-bit & 32-bit instructions to improve code density and reduce memory accesses

    • V805, 810 basic CPUs with small on-chip cache

    • V820 integrates simple system logic

    • V810 used in Nintendo CD-ROM systems

  • Hitachi SH7000 Architecture

    • SH7032, 7034 on-chip RAM, ROM, simple system logic

    • New architecture: 16-bit instructions only (32-bit datapaths)

    • Used in Sega game systems


Some pda processor comparisons l.jpg
Some PDA Processor Comparisons

Intel

AT&T Hobbit

AMD

Polar

33 MHz

6 MIPS

2K

22A,16D

3.3 V

550 mW

3

1

2

none

640 x 480

none

shared

600 mW

$58

1Q94

Elan

33 MHz

6 MIPS

none

22A,16D

3.3 V

550 mW

1

2

1

1

640 x 480

none

separate

550 mW

$49

2Q94

92020S

20 MHz

16 MIPS

6K

32 A,32 D

3.3 V

210 mW

4

3

3

none

640 x 480

1024 x 768

separate

530 mW

$101

1Q94

92020M

20 MHz

13.5 MIPS

6K

32 mux뭗

3.3 V

250 mW

3

2

3

none

640 x 480

1024 x 768

separate

490 mW

$80

1Q94

92020MX

20 MHz

11.5 MIPS

3K

32 mux뭗

3.3 V

290 mW

2

1

3

none

640 x 480

none

shared

390 mW

$63

1Q94

Clock Rate

Drystone MIPS

On-Chip Cache

Memory Bus

Voltage

CPU Power

Number of Chips

PCMCIA Slots

Serial Ports

Parallel Ports

LCD Support

CRT Support

Frame Buffer

Chip Set Power

Chip Set Price

Availability


Some pda processor comparisons14 l.jpg
Some PDA Processor Comparisons

ARM

700/710

20 MHz

18 MIPS

3V

120mW

none

64 entry

none

none

8K cache

32 mux뭗

341,000

46 mm2

0.8? 2M

$15

$35

2Q94

Hobbit

92020S

20 MHz

16 MIPS

3.3V

210mW

none

64 entry

none

none

6K cache

32A,32D

640,000

125 mm2

0.6? 2M

$25

$37

1Q94

NEC

V810

16 MHz

11.5 MIPS

3.3V

100mW

FPU

none

none

none

1K cache

32A,32D

240,000

53 mm2

0.8? 2M

$12

$20

3Q93

NEC

V820

25 MHz

18 MIPS

5V

750mW

FPU

none

some

serial

1K cache

32A,32D

380,000

114 mm2

0.8? 2M

$35

$80

1Q94

Hitachi

SH7032

12.5 MHz

10 MIPS

3.3V

130mW

MAC

none

some

some

8K RAM

16 mux뭗

593,000

92 mm2

0.8? 2M

$20

$32

4Q93

Clock Rate

Drystone MIPS

Voltage

CPU Power

On-chip Math

On-chip MMU

System Logic

Peripherals

On-Chip Mem

External Bus

Transistors

Die Area

IC Process

Est Manu Cost

CPU Price (10K)

Vol. Availability

Approx. 486-33 performance


Some pda processor comparisons15 l.jpg
Some PDA Processor Comparisons

ARM

610

20 MHz

11 MIPS

5V

500mW

none

32 entry

none

none

4K cache

32 mux뭗

359,000

71 mm2

1.0? 2M

$13

$20

2Q93

Motorola

68349

16 MHz

6 MIPS

3.3V

300mW

none

none

yes

serial

6K mixed

32A,32D

550,000

98 mm2

0.8? 2M

$23

$28

4Q93

Intel

Polar

33 MHz

6 MIPS

3.3V

550mW

none

yes

yes

many

2K cache

22A,16D

910,000

138 mm2

0.8? 3M

$35

$50

1Q94

AMD Elan

386SC

33 MHz

6 MIPS

3.3V

550mW

none

yes

yes

many

none

32A,16D

335,000

??

0.7? 2M

approx $30

$49

2Q94

Clock Rate

Drystone MIPS

Voltage

CPU Power

On-chip Math

On-chip MMU

System Logic

Peripherals

On-Chip Mem

External Bus

Transistors

Die Area

IC Process

Est Manu Cost

CPU Price (10K)

Vol. Availability


Typical laptop power consumption l.jpg
Typical Laptop Power Consumption

1.8 in PCMCIA hard drive

Cell telephone (active)

Cell telephone (inactive)

Infrared network

PCMCIA modem, 14.4 kbps

PCMCIA modem, 9.6 kbps

PCMCIA modem, 2.4 kbps

GPS receiver

0.7-0.3 W

5.400

0.300

0.250

1.365

0.625

0.565

0.670

Base System (2 MB, 25 MHz)

Base System (2 MB, 10 MHz)

Base System (2 MB, 5 MHz)

Screen backlight

Hard drive motor

Math co-processor

Floppy drive

External keyboard

LCD screen

Hard drive active

IC card slot

Additional Mem (per MB)

Parallel port

Serial port

3.650 W

3.150

2.800

1.425

1.100

0.650

0.500

0.490

0.315

0.125

0.100

0.050

0.035

0.030


Power consumption l.jpg
Power Consumption

Compaq LTE 386/s20

8%

5%

10%

1%

31%

35%


Infopad power consumption l.jpg
InfoPad Power Consumption

1.25 W

.075 W

.175W

3.0 W

2.4 W

2.1 W


Infopad power consumption19 l.jpg
InfoPad Power Consumption

Power (mW)

1.5

65

55

175/15.8

297/137

Power (mW)

550

525

390

0

25

1490

ARM I/F

RX Chip

TX SRAM

Other (5V/1.5V)

Custom Total

Backlight?

Text/Graphics LCD

12 DC -> 1000 AC

5 DC -> 12 DC

5 DC -> -18 DC

TG Display Total

Video LCD

5 DC -> 1000 AC

5 DC -> -8 DC

9 DC -> 5 DC

Vid Display Total

+ Other I/O = 500 mW

Plessey Downlink

Proxim Uplink

Xilinx

EEPROM

A/D Converter

Radio Total

ARM Speed

PAL (old/new)

EPROM

Octal Buffer

SRAM

ARM 60

20 MHz Crystal

Buffer

Clock Inverters

ARM Total

Yes

2600

500

625

75

3800

No

550

0

0

75

550

2.5 MHz

1495/400

115

80

0

22

45

40

175

1972/877

10 MHz

1495/400

0

0

600

120

45

40

175

2475/1380

2580

425

75

770

3900


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