Microchip Technology MA330028 데이터 시트
dsPIC33EPXXXGP50X, dsPIC33EPXXXMC20X/50X and PIC24EPXXXGP/MC20X
DS80000533H-page 6
2011-2014 Microchip Technology Inc.
Center-Aligned
Mode
Mode
Updates to active MDC/PDCx/ALTDTRx/PHASEx registers occur
only once every two PWM periods.
only once every two PWM periods.
Independent Time
Base Mode
Base Mode
Under certain circumstances, updates to the OVRENH and
OVRENL bits may be ignored by the PWM module.
OVRENL bits may be ignored by the PWM module.
Center-Aligned
Mode
Mode
PHASEx register updates are delayed.
A/D Operation
CTMU does not work with the A/D Converter in 12-bit mode.
External
Synchronization
Synchronization
Input Capture and Output Compare modules cannot be
synchronized.
synchronized.
I/O
MCLR pin operation may be disabled.
Pin Functions that
are Not 5V Tolerant
are Not 5V Tolerant
Select pins are not 5V tolerant.
I/O
Active-high logic pulse on the I/O pin with TMS function at POR.
Velocity Counter
Under certain circumstances, the Velocity Counter x register
(VELxCNT) misses count pulses.
(VELxCNT) misses count pulses.
Position Capture
Under certain conditions, the captured position may be off by
±1 count.
Position Capture
Position count captured at the rising edge of the HOME signal and
not the INDEX signal.
not the INDEX signal.
Center-Aligned
Mode
Mode
Under certain conditions, PWMxH and PWMxL are deasserted.
Current Reset
Mode
Mode
When the PWM generator is configured to operate in Current Reset
mode, the PWM Reset will happen only in every alternate PWM
cycle.
mode, the PWM Reset will happen only in every alternate PWM
cycle.
External Reference
Op Amp/Comparator voltage reference fails when the voltage on
V
V
REF
+ is less than 1.33V.
PWM Override
Glitch on PWMxH and PWMxL pins when override is turned off.
PWM Swap
When in Complementary mode, PWM swap feature does not
function properly.
function properly.
PWM Override
PWM override feature is not functional.
Receive Buffer
Read-Modify-Write operation on a CxRXFULx register may not
update it correctly.
update it correctly.
TABLE 2:
SILICON ISSUE SUMMARY (CONTINUED)
Module
Feature
Item
Number
Issue Summary