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Bootime from the Propeller chip — Parallax Forums

Bootime from the Propeller chip

comsolcomsol Posts: 7
edited 2006-06-05 19:39 in Propeller 1
Hello all folk's from parallax,
congratulation for the design the chip. I have some question:
How long is the complete boot sequenz for run a user
application from 4kbyte EEPROM, from power up to
executing the first user application statement( in clock cycle please or in time with the maximal clock).
best regaards: Uwe Reinersmann

Comments

  • GadgetmanGadgetman Posts: 2,436
    edited 2006-06-02 19:18
    I'm not certain about the time, but...

    1. It needs a 32KB EEPROM(minimum), and it always loads the COMPLETE 32KB.

    2. And maximum clock speed doesn't matter as the Propeller uses the internal RC-clock until it has finished booting. and then it's up to the users' program to set the speed by switching to the Xtal and starting the PLL.

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  • Paul BakerPaul Baker Posts: 6,351
    edited 2006-06-02 19:44
    Uwe, afraid we won't see your post? We did. Could you delete the other three posts? Thanks.

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  • comsolcomsol Posts: 7
    edited 2006-06-03 00:24
    Hello Gadgetman, ok, the internal clock and load 32 kbyte from the EEPROM. How long is the time between power up and the system execute the first application statement. The complete coold boot...
  • dandreaedandreae Posts: 1,375
    edited 2006-06-05 19:39
    The boot up time will vary depending on the temperature.· However, on average the boot up time is approximately 1 1/2 seconds.· This will also vary from chip to chip.

    Dave

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    Tech Support
    dandreae@parallax.com
    Http://www.parallax.com

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