Difference between revisions of "User:Corecode/Microboard"

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* Boards
 
* Boards
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** http://webapps.nuhorizons.com/storefront/PartSearch.do?PartNumberSearch=NUTINY-SDK-120&Manufacturer=ALLMFG&InStockOnly=FALSE&PbFreeOnly=null&ItemsPerPage=25&PageNum=1&PartNumberHolder=&Mode=initSearch&PostAction=GO&ResultsPerPage=25&NextPage=1&Commodity=ALL&CalledFromLink=YES&prevSearchType=&pSearchType=CompanyPart&referrerSite=&referredBy=http://www.nuvoton.com/NuvotonMOSS/eBusiness/Distributors.aspx?partno=NUTINY-SDK-120
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** http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=NUTINY-SDK-120-ND
  
  

Revision as of 03:26, 31 July 2011

µC comparison

AVR

[AVR]

  • EEPROM
  • can run at 5V
  • 12 ADC inputs
  • JTAG
  • analog comparator
  • ADC reference voltage


ARM

  • ARM Cortex-M3
  • higher frequency/MIPS
  • 32bit architecture


LPC1342/43

[LPC1342/43]

  • only up to 3.6V
  • 8 ADC inputs
  • hardware divide
  • 400kS/s ADC
  • integrated HID and MSC device driver
  • integrated USB MSC boot loader (needs 12MHz crystal)
  • higher active current
  • lower deep-sleep current
  • requires external LDO


NUC120

[[http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/IndustrialIC/ARMMicrocontroller/ARMCortexTMM0/Documents/NUC120%20Datasheet%20EN.pdf NUC120 Datasheet]] [[http://www.nuvoton.com/hq/enu/ProductAndSales/ProductLines/IndustrialIC/ARMMicrocontroller/ARMCortexTMM0/Documents/NuMicro%20NUC100%20Series%20Technical%20Reference%20Manual%20EN.pdf NUC120 Manual]]

  • ARM Cortex-M0
  • integrated LDO
  • less efficient than the LPC
  • very cheap; <= $2.50@1 at Arrow/Nu Horizons
  • external crystal required
  • slower clock (48MHz)
  • more flash, RAM


Voltage regulators

Adjustable LDO

MCP1725-ADJE/SN

  • MCP1725-ADJE/SN
  • $0.56@1, $0.39@100
  • Adjust with two resistors
  • Extra parts: 2 R (+ 1 R for power good, 1 C for delayed power good)
  • dropout 210mV - 350mV
  • max input 6V
  • max current 500mA
  • output 2.3V - 5V, fixed version available at 1.8V, 2.5V, 3.3V
  • required C: 4.7µF, 1µF


Adjustable switching regulator

SC195ULTRT

  • SC195ULTRT
  • $0.96@1, $0.555@100
  • Adjust with logic input pins
  • Extra parts: 1 L
  • max input 6V
  • max current 500mA
  • output 0.8V - 3.3V
  • required C: 4.7µF, 10µF; L: 1µH
  • suggested layout given

NCP1521BSNT1G

  • NCP1521BSNT1G
  • $0.92@1, $0.63@100
  • Adjust with two resistors
  • Extra parts: 2 R, 1 L, 1 C
  • max input 5.5V
  • max current 600mA
  • output 0.9V - 3.3V
  • required C: 4.7µF, 18pF, 10µF; L: 2.2µH (or 4.7µF and 4.7µH)
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