Information

 2011-2013 Microchip Technology Inc. DS80000522E-page 3
PIC24FV32KA304 FAMILY
Silicon Errata Issues
1. Module: Core (Low-Voltage Regulator)
When operating in Low-Voltage Sleep mode,
LVREN = 1 (RCON<12>) and LVRCFG = 0
(FPOR<2>), the device may not be able to enter
programming modes using high-voltage entry
(VIHH applied to MCLR).
Work around
If entry into a programming mode is required
while the device is in Low-Voltage Sleep mode,
use low-voltage entry into programming. Verify
that MCLR
functionality is enabled, MCLRE = 1
(FPOR<7>), before attempting programming.
Affected Silicon Revisions
2. Module: Reset (BOR)
Under certain conditions, the device may
improperly perform a Brown-out Reset upon
wake-up from a Sleep mode. This has been
observed under two conditions:
1. When the BOR is disabled in Sleep mode,
BOREN<1:0> = 10 (FPOR<1:0>), a BOR
may occur when the device wakes from
Sleep, regardless of the supply voltage.
2. When the BOR is configured for software
control (BOREN<1:0> = 01), the device
enters and wakes from Sleep normally
while the BOR is disabled in software,
SBOREN = 0 (RCON<13>). However, if the
BOR was disabled prior to entering Sleep
mode and is subsequently enabled after
waking from Sleep, a BOR may occur,
regardless of the supply voltage.
BOR functions normally when it is always
enabled or disabled (BOREN<1:0> = 11 or 00).
Work around
Do not use Sleep mode when BOREN<1:0> = 10.
If the BOR is to operate under software control,
always enable the HLVD module, HLVDEN = 1
(HLVDCON<15>), before enabling the BOR in
software (SBOREN = 1). This procedure
activates the internal band gap reference and
assures its stability for the BOR circuit.
Affected Silicon Revisions
3. Module: A/D (Threshold Detect)
When the auto-scan feature of the Threshold
Detect is enabled (AD1CON5<15> = 1), auto-
matic scan may fail when these conditions occur
together:
• the Device is in Sleep mode, and
• Timer1 is selected as the sample trigger clock
source (AD1CON1<7:4> = 0101).
Timer1 and other timers will function correctly as
sample triggers in other power-saving modes,
such as Idle mode.
Work around
If auto-scan functionality is required during
Sleep, use INT0 as the sample trigger.
Affected Silicon Revisions
Note: This document summarizes all silicon
errata issues from all revisions of silicon,
previous as well as current. Only the
issues indicated by the shaded column in
the following tables apply to the current
silicon revision (A6).
A4
A6
X
A4 A6
X
X
A4
A6
X