Recently I had to get sleep mode to work for the PIC16F688. I have MCLR set=
 as internal. I'm using the internal RC oscillator. I have two outputs goin=
g to transistors to drive LED's. I have two switch inputs with pull up resi=
stors. I'm running the device from 3 type 675 coin batteries. I had so much=
 trouble getting the current down. I was getting hundreds of uA. It would f=
loat all over the place from 1.2mA to 100uA. Finally I discovered that if I=
 connect about 5K I could get the sleep mode current down to 70nA. It was c=
onsistant. I'm using wake up on pin change and I only have the two switch i=
nputs enabled. I set all the other pins as input. I have nothing else conne=
cted. I use ICSP with a ICD-3. I fixture the tiny board with probes to conn=
ect the ICSP pins.=20

If MCLR is internal, why do I have to tie it low to get low sleep current? =
Is there a better way?=20
--=20
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