Mar 3, 2008 #1 T thiruatmail Newbie level 1 Joined Feb 21, 2008 Messages 1 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,288 hi frnds...what is the maximum value of Vref.....can we fix it as 12 volt dc..........tku
Mar 3, 2008 #2 M mouzid Full Member level 5 Joined Jun 22, 2007 Messages 248 Helped 9 Reputation 18 Reaction score 0 Trophy points 1,296 Activity points 2,876 Re: PIC16F877A thiruatmail said: hi frnds...what is the maximum value of Vref.....can we fix it as 12 volt dc..........tku Click to expand... Please elaborate. if you mean Pic's Power supply it is 5 Volt.
Re: PIC16F877A thiruatmail said: hi frnds...what is the maximum value of Vref.....can we fix it as 12 volt dc..........tku Click to expand... Please elaborate. if you mean Pic's Power supply it is 5 Volt.
Mar 3, 2008 #3 F Freddie Chopin Advanced Member level 4 Joined Dec 7, 2007 Messages 104 Helped 9 Reputation 18 Reaction score 3 Trophy points 1,298 Location Poland / Zawiercie Activity points 1,923 PIC16F877A RTFM 0x41 0x56 0x45!!
Mar 3, 2008 #4 VVV Advanced Member level 5 Joined Nov 26, 2004 Messages 1,575 Helped 384 Reputation 768 Reaction score 88 Trophy points 1,328 Activity points 19,971 Re: PIC16F877A No, you canno do that. Check the datasheet and you will see that the reference voltage has to be lower than the supply voltage, so the maximum reference is 5V, even less if your power supply can drift.
Re: PIC16F877A No, you canno do that. Check the datasheet and you will see that the reference voltage has to be lower than the supply voltage, so the maximum reference is 5V, even less if your power supply can drift.
Mar 3, 2008 #5 L laktronics Banned Joined Jan 6, 2007 Messages 942 Helped 176 Reputation 352 Reaction score 18 Trophy points 1,298 Activity points 0 Re: PIC16F877A Hi, Maximum value of Vref. = Vdd, So, you can not use 12V Vref. Regards, Laktronics