Datasheet

Table Of Contents
PIC16(L)F1508/9
DS40001609C-page 246 2011-2013 Microchip Technology Inc.
22.2 Clock Accuracy with
Asynchronous Operation
The factory calibrates the internal oscillator block out-
put (INTOSC). However, the INTOSC frequency may
drift as VDD or temperature changes, and this directly
affects the asynchronous baud rate.
The Auto-Baud Detect feature (see Section 22.4.1
“Auto-Baud Detect”) can be used to compensate for
changes in the INTOSC frequency.
There may not be fine enough resolution when
adjusting the Baud Rate Generator to compensate for
a gradual change in the peripheral clock frequency.