High Power Consumption in Sleep Mode

[Archangel]

Hi Nikos,
Check this thread out, same problem, different chip.
http://www.picbasic.co.uk/forum/showthread.php?p=75528

[Archangel]

Hi Nikos,
using this code:

;@ DEVICE  PIC16F648A, INTRC_OSC_NOCLOCKOUT 
;@ DEVICE pic16F648A, WDT_OFF 
;@ DEVICE pic16F648A, PWRT_ON
;@ DEVICE pic16F648A, MCLR_OFF
;@ DEVICE pic16F648A, BOD_OFF 
;@ DEVICE pic16F648A, LVP_OFF 
;@ DEVICE pic16F648A, CPD_OFF 
;@ DEVICE pic16F648A, PROTECT_OFF
@ __CONFIG _INTOSC_OSC_NOCLKOUT & _WDT_OFF & _PWRTE_OFF & _MCLRE_OFF & _LVP_OFF & _BODEN_OFF & _BOREN_OFF
DEFINE  OSC 4
DEFINE NO_CLRWDT 1
PORTA=0
TrisA = 255
trisb = %00000001 'RB0 as  input                                                                                                                                                                                                                                                               
CMCON = 7        ' Turn off comparators
'VRCON = %01101100  ' VRCON bit7 is OFF for no current drain
OPTION_REG.7 = 1 ' 1=DISABLE INTERNAL PULLUPS,0=ENABLE 
OPTION_REG.6 = 1 ' 1=RB0 Rising-Edge Trigger, 0=Falling-Edge Trigger

LED VAR PORTA.2

INTCON = %11010000 ' Interrupt Control Register
                 ' 7=0 - GIE - Global Interrupt Enable
                 ' 6=0 - PEIE - Peripheral Interrupt Enable
                 ' 5=0 - TOIE - TMR0 Overflow Interrupt Enable
                 ' 4=1 - INTE - RB0/INT Enable
                 ' 3=1 - RBIE - PORTB change interrupt Enable
                 ' 2=0 - TOIF - TMR0 Overflow Flag
                 ' 1-0 - INTF - RB0/Ext Interrupt Flag
                 ' 0=0 - RBIF - PORTB Interrupt Flag


on interrupt goto cycle2
CYCLE:
LOW LED
'pause 500

@  SLEEP
;@ nop
;@ nop
;@ nop

disable


cycle2:
HIGH LED 
    PAUSE 500
    LOW LED
    PAUSE 500
INTCON = %11010000  

enable
GOTO CYCLE
end

Which is a derivitive of your code, I fought with the interrupt a bit.
By setting port a as all inputs the sleep current dropped from 3.71 ma to 0.12 ma
The 16F648A was as close a chip to yours as I have.

[ngeronikolos]

Thanks Joe for your code...

I have just test it with the same results.
The Consumption is still 0.37 ma or 370uA.

I do not understand what is wrong.The setup is the minimal it ca be...

[ngeronikolos]

I find it.....
Now it sleeps with the minimum current...just 0.1 ma or 100uA.

The pin MCLR was flatting and I add the 4.7k to Vcc.

Many Many thanks joe for your code.


Regards
Nikos

[Archangel]

I find it.....
Now it sleeps with the minimum current...just 0.1 ma or 100uA.

The pin MCLR was flatting and I add the 4.7k to Vcc.

Many Many thanks joe for your code.


Regards
Nikos

You are welcome. I had turned MCLRE off in my config.

[Colin55]

You are welcome. I had turned MCLRE off in my config.

I added & _BODEN_OFF to __CONFIG and reduced the current from 120uA to 5uA

[AvionicsMaster1]

Just looking at your code and decided to ask a question or two.

Why do you set the same configs twice? I think either will accomplish the task but they may be contradictory also.

Why are some configs spelled differently from one to the other? PWRT/PWRTE, INTRC_OSC_NOCLOCKOUT/INTOSC_OSC_NOCLKOUT and MCLR/MCLRE are the ones I see as different.