Information

 2009-2013 Microchip Technology Inc. DS80000439N-page 11

dsPIC33FJ06GS101/X02 and dsPIC33FJ16GSX02/X04

29. Module: Analog Comparator

The Internal Band Gap Reference Voltage

(INTREF) for the analog comparator provides the

reference to the analog comparator if the EXTREF

bit (CMPCONx<5>) = 0 and the RANGE bit

(CMPCONx<0>) = 0.The data sheet states that

the INTREF voltage should be 1.2V nominal and

within ±1%.

However, the internal band gap reference voltage

does not meet the specification stated above. For

the actual range of the INTREF voltage, refer to

the IV

REF specification in the “Electrical

Characteristics” chapter of the device data

sheet.

Work arounds

To avoid this issue, implement one of the following

two work arounds, depending on the application

requirements.

Work around 1:

Use an external voltage reference for the Analog

Comparator by setting the EXTREF bit

(CMPCONx<5>) = 1 and providing an external

reference to the EXTREF pin.

Work around 2:

Use the high-range setting for the internal

reference by setting the EXTREF bit

(CMPCONx<5>) = 0 and the RANGE bit

(CMPCONx<0>) = 1. This setting uses AV

DD/2 as

the comparator reference voltage.

Affected Silicon Revisions

30. Module: Auxiliary PLL

For extended temperature devices (designated

with the -E suffix in the device part number) with

the date code of 09XX, the auxiliary PLL input

frequency does not meet the published

specification range at operating temperatures

above +85ºC.

Work around

Use the internal FRC oscillator as the input to the

auxiliary PLL, or use the external oscillator with a

frequency of 7.37 MHz.

Affected Silicon Revisions

A2 A3 A4