Information

PIC16(L)F1512/1513
DS80543B-page 4  2012 Microchip Technology Inc.
3. Module: Program Flash Memory (PFM)
3.1 PFM Self Write
Writes to the PFM will not execute if the device’s
clock source is HS or ECH, or if the internal
oscillator is at 16 MHz.
Work around
To write to the PFM, the clock source must have
one of the following settings: internal oscillator set
to 8 MHz or lower, ECM, ECL, XT, External RC, LP
or T1OSC.
Affected Silicon Revisions
4. Module: Fixed Voltage Reference (FVR)
4.1 Gain Amplifier Output
When using the FVR module, if the gain amplifier
outputs are set via the CDAFVR or ADFVR bits in
FVRCON, while the module is disabled (FVREN =
0), the internal oscillator frequency may shift,
device current consumption can increase, and a
Brown-out Reset may occur.
Work around
Set the FVREN bit of FVRCON to enable the
module prior to adjusting the amplifier output
selections with the CDAFVR and ADFVR bits. If
switching from the 4x output setting to the 1x
output setting, select the 2x output setting as an
intermediary step. Always set the amplifier output
selections to off (’00’) before disabling the FVR
module.
Affected Silicon Revisions
4.2 FVR Output Levels
The output levels of the FVR are likely to contain
large errors that can exceed 30% of the 1.024/
2.048/4.096V target levels stated in the Electrical
Specifications section of the data sheet.
Work around
None.
Affected Silicon Revisions
A1 A2
X
A1 A2
X X
A1 A2
X