PIC24FJ256GA110 Datasheet, PDF (12/22 Pages) Microchip Technology – 64/80/100-Pin, 16-Bit General Purpose Flash Microcontrollers with Peripheral Pin Select

PIC24FJ256GA110 FAMILY
Data Sheet Clarifications
The following typographic corrections and clarifications
are to be noted for the latest version of the device data
sheet (DS39905E):
Note:
Corrections are shown in bold. Where
possible, the original bold text formatting
has been removed for clarity.
1. Module: Guidelines for Getting Started
with 16-Bit Microcontrollers
Section 2.4 Voltage Regulator Pins (ENVREG/
DISVREG and VCAP/VDDCORE) has been replaced
with a new and more detailed section. The entire text
follows:
2.4 Voltage Regulator Pins Voltage
Regulator Pins
(ENVREG/DISVREG and
VCAP/VDDCORE)
Note: This section applies only to PIC24FJ
devices with an on-chip voltage regulator.
The on-chip voltage regulator enable/disable pin
(ENVREG or DISVREG, depending on the device
family) must always be connected directly to either a
supply voltage or to ground. The particular connection
is determined by whether or not the regulator is to be
used:
• For ENVREG, tie to VDD to enable the regulator,
or to ground to disable the regulator
• For DISVREG, tie to ground to enable the 
regulator or to VDD to disable the regulator
Refer to Section 25.2 “On-Chip Voltage Regulator”
for details on connecting and using the on-chip
regulator.
When the regulator is enabled, a low-ESR (< 5Ω)
capacitor is required on the VCAP/VDDCORE pin to
stabilize the voltage regulator output voltage. The
VCAP/VDDCORE pin must not be connected to VDD and
must use a capacitor of 10 µF connected to ground. The
type can be ceramic or tantalum. Suitable examples of
capacitors are shown in Table 2-1. Capacitors with
equivalent specifications can be used.
Designers may use Figure 2-3 to evaluate ESR
equivalence of candidate devices.
The placement of this capacitor should be close to
VCAP/VDDCORE. It is recommended that the trace
length not exceed 0.25 inch (6 mm). Refer to
Section 28.0 “Electrical Characteristics” for
additional information.
When the regulator is disabled, the VCAP/VDDCORE pin
must be tied to a voltage supply at the VDDCORE level.
Refer to Section 28.0 “Electrical Characteristics” for
information on VDD and VDDCORE.
FIGURE 2-3
10
FREQUENCY vs. ESR
PERFORMANCE FOR
SUGGESTED VCAP
1
0.1
0.01
0.001
0.01
0.1
1
10
100
Frequency (MHz)
1000 10,000
Note:
Typical data measurement at 25°C, 0V DC bias.
TABLE 2-1
Make
TDK
TDK
Panasonic
Panasonic
Murata
Murata
.
SUITABLE CAPACITOR EQUIVALENTS
Part #
Nominal
Capacitance
Base Tolerance Rated Voltage Temp. Range
C3216X7R1C106K
C3216X5R1C106K
ECJ-3YX1C106K
ECJ-4YB1C106K
GRM32DR71C106KA01L
GRM31CR61C106KC31L
10 µF
10 µF
10 µF
10 µF
10 µF
10 µF
±10%
±10%
±10%
±10%
±10%
±10%
16V
-55 to 125ºC
16V
-55 to 85ºC
16V
-55 to 125ºC
16V
-55 to 85ºC
16V
-55 to 125ºC
16V
-55 to 85ºC
DS80368N-page 12
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