I would like to know why my PIC which when I put in to deep sleep does consume more than what is specified by the datasheet. I have connected a precision current meter and found that when I load the code which makes the controller to enter deep sleep it consumes 0.27mA as to the 860nA rating given. I would like to have your insight for the problem. I have done the testing on a PCB with crystal for 16 MHz and for RTCC. Why is it showing this much consumption?
// PIC18F26J50 Configuration Bit Settings
#include <p18F26J50.h>
// CONFIG1L
#pragma config WDTEN = OFF // Watchdog Timer (Disabled - Controlled by SWDTEN bit)
#pragma config PLLDIV = 1 // PLL Prescaler Selection bits (No prescale (4 MHz oscillator input drives PLL directly))
#pragma config STVREN = ON // Stack Overflow/Underflow Reset (Enabled)
#pragma config XINST = OFF // Extended Instruction Set (Enabled)
// CONFIG1H
#pragma config CPUDIV = OSC1 // CPU System Clock Postscaler (No CPU system clock divide)
#pragma config CP0 = OFF // Code Protect (Program memory is not code-protected)
// CONFIG2L
#pragma config OSC = ECPLL // Oscillator (EC+PLL (CLKO-RA6), USB-EC+PLL)
#pragma config T1DIG = ON // T1OSCEN Enforcement (Secondary Oscillator clock source may be selected)
#pragma config LPT1OSC = OFF // Low-Power Timer1 Oscillator (High-power operation)
#pragma config FCMEN = ON // Fail-Safe Clock Monitor (Enabled)
#pragma config IESO = ON // Internal External Oscillator Switch Over Mode (Enabled)
// CONFIG2H
#pragma config WDTPS = 32768 // Watchdog Postscaler (1:32768)
// CONFIG3L
#pragma config DSWDTOSC = INTOSCREF// DSWDT Clock Select (DSWDT uses INTRC)
#pragma config RTCOSC = T1OSCREF// RTCC Clock Select (RTCC uses T1OSC/T1CKI)
#pragma config DSBOREN = ON // Deep Sleep BOR (Enabled)
#pragma config DSWDTEN = ON // Deep Sleep Watchdog Timer (Enabled)
#pragma config DSWDTPS = G2 // Deep Sleep Watchdog Postscaler (1:2,147,483,648 (25.7 days))
// CONFIG3H
#pragma config IOL1WAY = ON // IOLOCK One-Way Set Enable bit (The IOLOCK bit (PPSCON<0>) can be set once)
#pragma config MSSP7B_EN = MSK7 // MSSP address masking (7 Bit address masking mode)
// CONFIG4L
#pragma config WPFP = PAGE_63 // Write/Erase Protect Page Start/End Location (Write Protect Program Flash Page 63)
#pragma config WPEND = PAGE_WPFP// Write/Erase Protect Region Select (valid when WPDIS = 0) (Page WPFP<5:0> through Configuration Words erase/write protected)
#pragma config WPCFG = OFF // Write/Erase Protect Configuration Region (Configuration Words page not erase/write-protected)
// CONFIG4H
#pragma config WPDIS = OFF // Write Protect Disable bit (WPFP<5:0>/WPEND region ignored)
#include<p18F26J50.h>
#include"delays.h"
void main (void)
{
int x;
TRISC=0x00;
PORTCbits.RC2=1;
Delay10KTCYx(20);
WDTCONbits.REGSLP = 1; //PERIPHERAL INT DISABLE
OSCCONbits.IDLEN = 0;
INTCONbits.GIE=0;
PORTCbits.RC2=0;
DSCONHbits.DSEN=1;
Sleep();
x=0;
while(1)
{
;
}
}``
