Transcript Board uP Bits MHz ROM RAM Others

THE HARDWARE
DEVELOPMENT PROCESS
EMIL JOANNOU, P.ENG.
NAROCH NETWORKS CORPORATION
WWW.NAROCHNETWORKS.COM
1
GENERAL OVERVIEW
BreadBoard
Product Spec
Electronics
Software
Mechanical
Integration
Test
2
BREADBOARDING
Customer Device
USB
BlueTooth Link
Smart Phone
3
SINGLE BOARD COMPUTERS
Board
uP
Bits MHz ROM
Arduino
ATmega
328
8
16
Beagle
Bone
OMAP
3530
32
720
Raspberry
Pi
BCM
2835
32
700
?
Intel
Edison
Atom +
Quark
32
500
100
4GB
1GB
OLinuXino CortexA8
32
1000
4GB
512M WiFi
VGA
32k
RAM Others
2K
I2C,SPI,
USART
256M 256M HDMI
USB,SD
512M E-net
HDMI
WiFi,
BT
4
AN I/O BOUND PROCESSOR
5
ELECTRONICS DESIGN PROCESS
Detailed Design
Schematic Capture
PCB Layout
BoM Generation
PCB Fab
Assembly
Test
6
DETAILED DESIGN
Capacitors
Resistors
Size, Tolerance, Volts, Dielectric,
Temperature, ESR, Ripple Current
Size, Tolerance, Power, Voltage, TCR
Digital
Vinh,Vinl,VohVol, Ioh, Iol, Iin, tsu, th, tpd
Analog
Vos, Ios, Ib, GBW, uV/sqrt(Hz)
Thermal
Watts, Tamax, Tjmax, Θja, Θjc, Θha,
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CHIP RESISTOR SIZES
1/4 x 1/8 inch = 0.250 x 0.125 inch
size 2512.
1/8 x 1/16 inch = 0.125 x 0.0625 inch
size 1206.
1/16 x 1/32 inch = 0.0625x 0.03125 inch
size 0603.
Also 0805, 0402, 0201, 01005
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SCHEMATIC CAPTURE
9
LAYOUT
10
BOM CREATION
Item # Qty
1
1
2
2
3
3
4
2
5
2
Ref Des
B1
C1,C2
C3, C14-15
C7, C32
C8, C13
Type
BATT,coin,3V,Lithium
CAP,12pF,5%,50V,NPO,0402
CAP,1uF,10%,16V,X7R,1206
CAP,4.7uF,10%,25V,X5R,1206
CAP,22uF,10%,6.3V,X5R,0805
Mfg
Mfg PN
PANASONIC CR-1220/HFN
MURATA
GM1555C1H120JA01D
KEMET
C1206C105K4RACTU
TDK
C3216X5R1E475K160AA
SAMSUNG CL21A226KQQNNNE
Digikey PN
P244-ND
490-5924-1-ND
399-1254-1-ND
445-4047-1-ND
1276-2907-1-ND
11
PCB FAB & ASSEMBLY
Top
Solder
Mask
Top
Solder
Paste
Chip Cap
Silk
Screen
Top
Copper
Fiberglass
Via
Hole
Bottom
Copper
Bottom
Solder Mask
12
TESTING
• Design Verification Testing
• Test, Debug, Rework, Retest
• Manufacturing Test Procedure
• Standards Testing
• Gov’t Regulated:
•
EMI (FCC/DOC) & Safety (CSA/UL)
• Industry Standards
•
•
•
•
Telecom: NEBS
Metering: Industry Canada/ANSI
Medical: FDA, Health Canada
Automotive & Others………
13
FCC RADIATED EMISSIONS
Class A = Industrial , Commercial
Class B = More Strict = Residential
FCC regulations part 15 “Radio Frequency Devices”
Concerned with both Radiated and Conducted emissions.
Canadian DoC regs follow FCC rules
Europe has slightly different limits.
14
SOME COMMON SAFETY STDS
• CSA/UL 60950 Safety of Information Technology Equipment
• CSA/UL 61010 Electrical Equipment for Measurement,
Control, and Laboratory Use.
• UL 508 Industrial Control Equipment
• CSA-C22.2 No 14-10 Industrial Control Eqt
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UL/CSA 61010
SAFETY REQUIREMENTS FOR ELECTRICAL EQUIPMENT FOR
MEASUREMENT, CONTROL, AND LABORATORY USE.
Protection Against:
• Electrical Shock
• Mechanical Hazards
• Mechanical Stresses
• The Spread of Fire
• Hazards from Fluids
• Overheating
• Radiation, including laser,
sonic, and ultrasonic.
• Liberated Gases,
explosion, implosion.
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APPROVALS LISTINGS
LR3730
E143709
• To look up CSA LR file numbers go to
•
http://www.csagroup.org/ca/en/services/testing-andcertification/certified-product-listing .
To look up UL E file numbers go to
http://database.ul.com/cgibin/XYV/template/LISEXT/1FRAME/index.html.
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Slides available from
www.narochnetworks.com/iot_meetup
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