Datasheet
PIC16(L)F1933
DS80490L-page 10 2009-2012 Microchip Technology Inc.
8. Module: Enhanced Capture Compare
PWM (ECCP)
8.1 Enhanced PWM
When the PWM is configured for Full-Bridge mode
and the duty cycle is set to 0%, writing the
PxM<1:0> bits to change the direction has no
effect on PxA and PxC outputs.
On the A4 revision products only, ECCP1 no
longer exhibits this problem.
Work around
Increase the duty cycle to a value greater than 0%
before changing directions.
Affected Silicon Revisions
8.2 Enhanced PWM
In PWM mode, when the duty cycle is set to 0%
and the STRxSYNC bit is set, writing the STRxA,
STRxB, STRxC and the STRxD bits to enable/
disable steering to port pins has no effect on the
outputs.
Work around
Increase the duty cycle to a value greater than 0%
before enabling/disabling steering to port pins.
Affected Silicon Revisions
9. Module: In-Circuit Serial Programming™
(ICSP™)
9.1 Bulk Erase Feature not available with Low-
Voltage Programming mode
A bulk erase of the program Flash memory or data
memory cannot be executed in Low-Voltage
Programming mode.
Work around
Method 1: If ICSP Low-Voltage Programming
mode is required, use row erases to
erase the program memory, as
described in the Program/Verify
mode section of the Programming
Specification. Data memory must be
over-written with the desired values.
Method 2: Use ICSP High-Voltage
Programming mode if a bulk
erase is required.
Affected Silicon Revisions
10. Module: LDO
10.1 Minimum VDD above 85°C
The minimum voltage required for the
PIC16F1933 devices is 3.5 volts for temperatures
above 85°C.
Work around
None.
Affected Silicon Revisions
A1 A2 A3 A4 A6 A7 A8
X X XX
A1 A2 A3 A4 A6 A7 A8
X X XX
Note: Only the bulk erase feature will erase
program or data memory if code or data
protection is enabled. Method 2 must be
used if code or data protection is enabled.
A1 A2 A3 A4 A6 A7 A8
X X X
Note: This issue only applies to the PIC16F1933
devices operating in the Extended
temperature range. The PIC16LF1933
devices are not affected.
A1 A2 A3 A4 A6 A7 A8
X X XXX X X