Sorry, I'm using:

- Internal oscillator -> 8MHz
- 5V power supply
- External MCLR (also tried internal)
- BOR on
- PWRUPTMR on
- No WDT



Mauricio Jancic
Janso Desarrollos
Microchip Consultant Program Member
info@janso.com.ar
www.janso.com.ar
+54 11 4542 3519

> -----Original Message-----
> From: piclist-bounces@MIT.EDU [mailto:piclist-bounces@MIT.EDU] On Behalf
> Of alan smith
> Sent: Monday, November 28, 2005 11:42 AM
> To: Microcontroller discussion list - Public.
> Subject: Re: [PIC] PIC 16F913 EEPROM
> 
> supply voltage.....
> 
>   If you stay within the operating range as defined in the data
> sheet....isnt the the charge pumps for the EEPROM writing built in?  I
> havent implemented EEPROM interfacing yet, but will be in the next week or
> so and will be running this at 3V
> 
> Mike Harrison <mike@whitewing.co.uk> wrote:
>   On Sat, 26 Nov 2005 19:25:03 -0300, you wrote:
> 
> >Alan, and everybody else.
> >
> > Did you try to write the 16F913 EEPROM? I cant doit... the program
> >get's stuck at the second write waiting for the first write to be
> >completed... the code to write the EEPROM is:
> >
> >while(WR)
> > continue; // I get stuck here after the first write
> > EEADR=ADD;
> > EEDATA=DATA;
> > EEPGD = 1;
> > WREN=1;
> > EECON2=0x55;
> > EECON2=0xAA;
> > WR=1;
> > WREN=0;
> >
> >Interrupts are not enabled...
> >Reading the PIC with MPLAB reveals that the EEPROM was not programmed...
> 
> Have you looked at the assembler code generated, e.g. to ensure that the
> compiler is not inserting
> unnecessary bank-switching between the enable sequence which might stop it
> working.
> Is the supply voltage adequate ?
> 
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