[hpsdr] EEPROM Programming

[Ahti Aintila]

On 23/02/07, Scott Cowling <scotty at tonks.com> wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi Phil,
>
> How long does it take to program a new blank chip via the USB interface?
>
> As others have suggested, we could have the parts pre-programmed
> before we install them. However, we need to test the assembled PCBs
> anyway, so it might make sense to just program them at that time if
> it not too time consuming.
>
> 73,
> Scotty WA2DFI
>
Scotty,

You are completely right. See Sami's message. His estimate is 2 seconds.

73, Ahti OH2RZ


> At 21:09 2007-02-23 +0900, Phil Harman wrote:
> >***** High Performance Software Defined Radio Discussion List *****
> >
> >During the production of Ozy we need to program some 500 24LC128 EEPROMS.
> >This EEPROM is use to hold the USB  VID and PID of the Ozy board.
> >
> >There is a facility to program the blank chip after it has been assembled on
> >the PCB and this is the process we used when building the prototypes.
> >However, this is rather a time consuming process ( when it has to be done
> >500 times!) and what would be ideal would be to install these chips ready
> >programmed.
> >
> >Phil N8VB suggested that we use a jig to hold the chip and program them via
> >I2C. Has anyone built such a jig, knows how to make one, or knows if it
> >possible to order them ready programmed.
> >
> >73's Phil...VK6APH
> >
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