Pic32

dsPIC in system timing (SVN revision 81)

• w/debug code appx 2.52mS
• debug code off : 2.26mS
• motor commands off : appx 2.18mS

PIC32 timing (SVN revision 81)

Using 32 bit code generation and -Os optimization

• 2ws flash 78.64MHz - 500uS - fastest 100% in spec
• 2ws flash, 83MHz - 472uS
• 3ws flash, 83MHz - 500uS
• 2ws flash, 103.2MHz = 382uS

Using 16 bit code generation and -Os optimization

• 2ws flash, 103.2MHz = 422uS

Using 32 bit code generation and NO optimization

• 2ws flash, 103.2MHz = 540uS

Using 16 bit code generation and NO optimization

• 2ws flash, 103.2MHz = 566uS

Using 32 bit code generation and -OS "fastest" optimization

• 2ws flash, 103.2MHz = 388uS

Using 32 bit code generation and -O2 optimization

• 2ws flash, 103.2MHz = 390uS

Using 32 bit code generation and -O1 optimization

• 2ws flash, 103.2MHz = 390uS

flash overclock

DS specs : 0WS for 0-30MHz, 1WS for 30 to 60MHz, and 2WS for 80MHz

• 0WS flash, 41.7MHz - 818uS
• 1ws flash, 83MHz - 440uS
• 2ws flash, 125MHz - 316uS
• 3ws flash, 140MHz - 300uS

PLL configs

CLK = 14.74MHz

• 41Mhz = CLK / 3 * 17 / 2
• 78MHz = CLK / 3 * 16
• 83MHz = CLK / 3 * 17
• 103MHz = CLK / 3 * 21
• 125Mhz = CLK / 2 * 17
• 140MHz = CLK / 2 * 19

PIC32 DOCS

• PIC32 starter kit
• PIC32 USB starter kit
• file:///C:/Program%20Files%20%28x86%29/Microchip/MPLAB%20C32/doc/README.html
• http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=2615&dDocName=en532454&redirects=c32
• http://www.johnloomis.org/microchip/docs/32-bit-Peripheral-Library-Guide.pdf