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PICList Thread
'16f84 Vdd range'
1998\03\14@081645 by wouter van ooijen

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The 16f84 datasheet states (p72) A 4.0-6.0 range for a 16f84-04 and a
4.5-5.5 range for the 16f84-10, both in XT mode.
On the next page however(16f84 without speed indication) the range is
4.0-6.0 for XT mode.
What is correct?

1998\03\14@150535 by Mike Keitz

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On Fri, 13 Mar 1998 21:15:59 +0100 wouter van ooijen <spam_OUTwfTakeThisOuTspamXS4ALL.NL>
writes:
>The 16f84 datasheet states (p72) A 4.0-6.0 range for a 16f84-04 and a
>4.5-5.5 range for the 16f84-10, both in XT mode.
>On the next page however(16f84 without speed indication) the range is
>4.0-6.0 for XT mode.

If the PIC16F84 is to operate above 4 MHz, officially you need a -10
chip, and a power supply from 4.5 to 5.5 V.  At 4 MHz or below, either a
-10 or -04 chip will work, and the power supply range is extended to
4.0-6.0 V.  The -10 chip is not recommended for the LP mode (below 200
KHz), but it will usually work there.

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