хотя.. ответ дан в даташите: Appendix A: Migrating from
dsPIC33FJXXXMCX06/X08/X10 Devices to dsPIC33FJXXXMCX06A/X08A/X10A
Devices . The dsPIC33FJXXXMCX06A/X08A/X10A devices
were designed to enhance the dsPIC33FJXXXMCX06/
X08/X10 families of devices.
In general, the dsPIC33FJXXXMCX06A/X08A/X10A
devices are backward-compatible with
dsPIC33FJXXXMCX06/X08/X10 devices; however,
manufacturing differences may cause
dsPIC33FJXXXMCX06A/X08A/X10A devices to behave
differently from dsPIC33FJXXXMCX06/X08/X10
devices.
Therefore, complete system test and
characterization is recommended if
dsPIC33FJXXXMCX06A/X08A/X10A devices are used
to replace dsPIC33FJXXXMCX06/X08/X10 devices.
The following enhancements were introduced:
• Extended temperature support of up to +125ºC
• Enhanced Flash module with higher endurance
and retention
• New PLL Lock Enable Configuration bit
• Added Timer5 trigger for ADC1 and Timer3 trigger
for ADC2