2.0Guidelines for Getting Started with 32-bit MCUs........................................................................................................................ 27
5.0Flash Program Memory.............................................................................................................................................................. 79
10.0 USB On-The-Go (OTG)............................................................................................................................................................ 121
24.0 Charge Time Measurement Unit (CTMU) ............................................................................................................................... 217
25.0 Power-Saving Features ........................................................................................................................................................... 221
26.0 Special Features ...................................................................................................................................................................... 225
27.0 Instruction Set .......................................................................................................................................................................... 239
28.0 Development Support............................................................................................................................................................... 241
31.0 DC and AC Device Characteristics Graphs.............................................................................................................................. 293
The Microchip Web Site ..................................................................................................................................................................... 327
Customer Change Notification Service .............................................................................................................................................. 327
Product Identification System ............................................................................................................................................................ 328
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The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000).
Errata
An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for current
devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revision
of silicon and revision of document to which it applies.
To determine if an errata sheet exists for a particular device, please check with one of the following:
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Note:Some features are not available on all devices. Refer to the family features tables (Table 1 and Ta bl e 2 ) for availability.
UART1-UART2
Comparators 1-3
PORTA
Remappable
PORTB
CTMU
JTAG
Priority
DMAC
ICD
MIPS32® M4K
®
ISDS
EJTAGINT
Bus Matrix
Data RAM
Peripheral Bridge
32
32-bit Wide
Flash
32 32
32
32
Peripheral Bus Clocked by PBCLK
Program Flash Memory
Controller
32
32
32
Interrupt
Controller
BSCAN
PORTC
PMP
I2C1-I2C2
SPI1-SPI2
IC1-IC5
PWM
OC1-OC5
OSC1/CLKI
OSC2/CLKO
V
DD, VSS
Timing
Generation
MCLR
Power-up
Timer
Oscillator
Start-up Timer
Power-on
Reset
Watchdog
Timer
Brown-out
Reset
Precision
Reference
Band Gap
FRC/LPRC
Oscillators
Regulator
Voltage
VCAP
OSC/SOSC
Oscillators
PLL
Dividers
SYSCLK
PBCLK
Peripheral Bus Clocked by SYSCLK
USB
PLL-USB
USBCLK
32
RTCC
10-bit ADC
Timer1-Timer5
32
32
CPU Core
Pins
1.0DEVICE OVERVIEW
Note 1: This data sheet summarizes the features
of the PIC32MX1XX/2XX family of
devices. It is not intended to be a
comprehensive reference source. To
complement the information in this data
sheet, refer to the related section of the
“PIC32 Family Reference Manual”, which
is available from the Microchip web site
(www.microchip.com/PIC32).
2: Some registers and associated bits
described in this section may not be
available on all devices. Refer to
Section 4.0 “Memory Organization” in
this data sheet for device-specific register
and bit information.
FIGURE 1-1:BLOCK DIAGRAM
This document contains device-specific information for
PIC32MX1XX/2XX devices.
Figure 1-1 illustrates a general block diagram of the
core and peripheral modules in the PIC32MX1XX/2XX
family of devices.
Table 1-1 lists the functions of the various pins shown
I/OSTPORTA is a bidirectional I/O port
RA12833420I/OST
RA269730I/OST
RA3710831I/OST
RA49121034I/OST
RA7———13I/OST
RA8———32I/OST
RA9———35I/OST
RA10———12I/OST
RB0143521I/OSTPORTB is a bidirectional I/O port
RB1253622I/OST
RB236123I/OST
RB347224I/OST
RB4811933I/OST
RB511141541I/OST
RB612
SDA11518191I/OSTSynchronous serial data input/output for
I2C1
SCL247224I/OSTSynchronous serial clock input/output for
I2C2
SDA236123I/OSTSynchronous serial data input/output for
I2C2
TMS
19
11
(2)
(3)
22
14
(2)
(3)
25
15
(2)
(3)
12ISTJTAG Test mode select pin
TCK14171813ISTJTAG test clock input pin
TDI13161735O—JTAG test data input pin
TDO15181932O—JTAG test data output pin
RTCC47224OSTReal-Time Clock alarm output
VREF-2833420IAnalog
C
VREF+2723319IAnalogComparator Voltage Reference (high)
C
VREFOUT22252814OAnalogComparator Voltage Reference output
2.0GUIDELINES FOR GETTING
STARTED WITH 32-BI T MCUs
Note 1: This data sheet summarizes the features
of the PIC32MX1XX/2XX family of
devices. It is not intended to be a
comprehensive reference source. To
complement the information in this data
sheet, refer to the related section of the
“PIC32 Family Reference Manual”, which
is available from the Microchip web site
(www.microchip.com/PIC32).
2: Some registers and associated bits
described in this section may not be
available on all devices. Refer to
Section 4.0 “Memory Organization” in
this data sheet for device-specific register
and bit information.
2.1Basic Connection Requirements
Getting started with the PIC32MX1XX/2XX family of
32-bit Microcontrollers (MCUs) requires attention to a
minimal set of device pin connections before proceeding with development. The following is a list of pin
names, which must always be connected:
DD and VSS pins (see 2.2 “Decoupling
• All V
Capacitors”)
• All AV
•V
•MCLR pin (see 2.4 “Master Clear (MCLR) Pin”)
• PGECx/PGEDx pins, used for In-Circuit Serial
• OSC1 and OSC2 pins, when external oscillator
The following pins may be required:
•V
DD and AVSS pins, even if the ADC module
is not used (see 2.2 “Decoupling Capacitors”)
CAP pin (see 2.3 “Capacitor on Internal
V o ltage Regulator (V
Programming (ICSP™) and debugging purposes
(see 2.5 “ICSP Pins”)
source is used (see 2.7 “External Oscillator
Pins”)
REF+/VREF- pins – used when external voltage
reference for the ADC module is implemented
Note:The AV
nected, regardless of ADC use and the
ADC voltage reference source.
CAP)”)
DD and AVSS pins must be con-
2.2Decoupling Capacitors
The use of decoupling capacitors on power supply
pins, such as VDD, VSS, AVDD and AVSS is required.
See Figure 2-1.
Consider the following criteria when using decoupling
capacitors:
• Value and type of capacitor: A value of 0.1 µF
(100 nF), 10-20V is recommended. The capacitor
should be a low Equivalent Series Resistance
(low-ESR) capacitor and have resonance frequency in the range of 20 MHz and higher. It is
further recommended that ceramic capacitors be
used.
• Placement on the printed circuit board: The
decoupling capacitors should be placed as close
to the pins as possible. It is recommended that
the capacitors be placed on the same side of the
board as the device. If space is constricted, the
capacitor can be placed on another layer on the
PCB using a via; however, ensure that the trace
length from the pin to the capacitor is within onequarter inch (6 mm) in length.
• Handling high frequency noise: If the board is
experiencing high frequency noise, upward of
tens of MHz, add a second ceramic-type capacitor
in parallel to the above described decoupling
capacitor. The value of the second capacitor can
be in the range of 0.01 µF to 0.001 µF. Place this
second capacitor next to the primary decoupling
capacitor. In high-speed circuit designs, consider
implementing a decade pair of capacitances as
close to the power and ground pins as possible.
For example, 0.1 µF in parallel with 0.001 µF.
• Maximizing performance: On the board layout
from the power supply circuit, run the power and
return traces to the decoupling capacitors first,
and then to the device pins. This ensures that the
decoupling capacitors are first in the power chain.
Equally important is to keep the trace length
between the capacitor and the power pins to a
minimum thereby reducing PCB track inductance.
Note 1: If the USB module is not used, this pin must be
connected to V
DD.
2: As an option, instead of a hard-wired connection, an
inductor (L1) can be substituted between V
DD and
AV
DD to improve ADC noise rejection. The inductor
impedance should be less than 1Ω and the inductor
capacity greater than 10 mA.
Where:
f
F
CNV
2
------------- -
=
f
1
2π LC()
-----------------------
=
L
1
2πfC()
--------------------- -
⎝⎠
⎛⎞
2
=
(i.e., ADC conversion rate/2)
Connect
(2)
VUSB3V3
(1)
VCAP
Tantalum or
ceramic 10 µF
ESR ≤ 3Ω
(3)
3: Aluminum or electrolytic capacitors should not be
used. ESR ≤ 3W from -40ºC to 125ºC @ SYSCLK
frequency (i.e., MIPS).
Note 1: 470Ω≤R1 ≤ 1Ω will limit any current flowing into
MCLR
from the external capacitor C, in the event of
MCLR
pin breakdown, due to Electrostatic Discharge
(ESD) or Electrical Overstress (EOS). Ensure that the
MCLR
pin VIH and VIL specifications are met without
interfering with the Debug/Programmer tools.
2: The capacitor can be sized to prevent unintentional
Resets from brief glitches or to extend the device
Reset period during POR.
3: No pull-ups or bypass capacitors are allowed on
active debug/program PGECx/PGEDx pins.
R1
(1)
10k
V
DD
MCLR
PIC32
1 kΩ
0.1 µF
(2)
PGECx
(3)
PGEDx
(3)
ICSP™
1
5
4
2
3
6
V
DD
VSS
NC
R
C
FIGURE 2-1:RECOMMENDED
MINIMUM CONNECTION
2.4Master Clear (MCLR) Pin
The MCLR pin provides for two specific device
functions:
• Device Reset
• Device programming and debugging
Pulling The MCLR
Figure 2-2 illustrates a typical MCLR
device programming and debugging, the resistance
and capacitance that can be added to the pin must
be considered. Device programmers and debuggers
drive the MCLR
levels (V
IH and VIL) and fast signal transitions must
not be adversely affected. Therefore, specific values
of R and C will need to be adjusted based on the
application and PCB requirements.
For example, as illustrated in Figure 2-2, it is
recommended that the capacitor C, be isolated from
the MCLR
pin during programming and debugging
operations.
Place the components illustrated in Figure 2-2 within
one-quarter inch (6 mm) from the MCLR
FIGURE 2-2:MCLR PIN CONNECTIONS
pin low generates a device Reset.
circuit. During
pin. Consequently, specific voltage
pin.
2.2.1BULK CAPACITORS
The use of a bulk capacitor is recommended to improve
power supply stability. Typical values range from 4.7 µF
to 47 µF. This capacitor should be located as close to
the device as possible.
2.3Capacitor on Internal Voltage
2.3.1INTERNAL REGULATOR MODE
A low-ESR (1 Ohm) capacitor is required on the VCAP
pin, which is used to stabilize the internal voltage regulator output. The V
DD, and must have a CEFC capacitor, with at least a
V
6V rating, connected to ground. The type can be
ceramic or tantalum. Refer to Section 29.0 “Electrical
The PGECx and PGEDx pins are used for In-Circuit
Serial Programming™ (ICSP™) and debugging purposes. It is recommended to keep the trace length
between the ICSP connector and the ICSP pins on the
device as short as possible. If the ICSP connector is
expected to experience an ESD event, a series resistor
is recommended, with the value in the range of a few
tens of Ohms, not to exceed 100 Ohms.
PIC32MX1XX/2XX
Main Oscillator
Guard Ring
Guard Trace
Secondary
Oscillator
PIC32
SOSCO
SOSCI
2.2 K
33 pF
33 pF
Note 1: P/N: Epson MC-306 32.7680K-A0:ROHS.
Crystal
(1)
Pull-up resistors, series diodes and capacitors on the
PGECx and PGEDx pins are not recommended as they
will interfere with the programmer/debugger communications to the device. If such discrete components are
an application requirement, they should be removed
from the circuit during programming and debugging.
Alternatively, refer to the AC/DC characteristics and
timing requirements information in the respective
device Flash programming specification for information
on capacitive loading limits and pin input voltage high
IH) and input low (VIL) requirements.
(V
Ensure that the “Communication Channel Select” (i.e.,
PGECx/PGEDx pins) programmed into the device
matches the physical connections for the ICSP to
MPLAB
®
ICD 3 or MPLAB REAL ICE™.
For more information on ICD 3 and REAL ICE
connection requirements, refer to the following
documents that are available on the Microchip web
site.
®
• “Using MPLAB
ICD 3” (poster) (DS50001765)
• “MPLAB® ICD 3 Design Advisory” (DS50001764)
®
• “MPLAB
REAL ICE™ In-Circuit Debugger
User’s Guide” (DS50001616)
®
• “Using MPLAB
REAL ICE™ Emulator” (poster)
(DS50001749)
The oscillator circuit should be placed on the same side
of the board as the device. Also, place the oscillator circuit close to the respective oscillator pins, not exceeding one-half inch (12 mm) distance between them. The
load capacitors should be placed next to the oscillator
itself, on the same side of the board. Use a grounded
copper pour around the oscillator circuit to isolate them
from surrounding circuits. The grounded copper pour
should be routed directly to the MCU ground. Do not
run any signal traces or power traces inside the ground
pour. Also, if using a two-sided board, avoid any traces
on the other side of the board where the crystal is
placed. A suggested layout is illustrated in Figure 2-3.
FIGURE 2-3:SUGGESTED OSCILLATOR
CIRCUIT PLACEMENT
2.6JTAG
The TMS, TDO, TDI and TCK pins are used for testing
and debugging according to the Joint Test Action
Group (JTAG) standard. It is recommended to keep the
trace length between the JTAG connector and the
JTAG pins on the device as short as possible. If the
JTAG connector is expected to experience an ESD
event, a series resistor is recommended with the value
in the range of a few tens of Ohms, not to exceed 100
Ohms.
Pull-up resistors, series diodes and capacitors on the
TMS, TDO, TDI and TCK pins are not recommended
as they will interfere with the programmer/debugger
communications to the device. If such discrete components are an application requirement, they should be
removed from the circuit during programming and
debugging. Alternatively, refer to the AC/DC characteristics and timing requirements information in the
respective device Flash programming specification for
information on capacitive loading limits and pin input
voltage high (V
IH) and input low (VIL) requirements.
2.7External Oscillator Pins
Many MCUs have options for at least two oscillators: a
high-frequency primary oscillator and a low-frequency
secondary oscillator (refer to Section 8.0 “Oscillator
Configuration” for details).
2.8Unused I/Os
Unused I/O pins should not be allowed to float as
inputs. They can be configured as outputs and driven
to a logic-low state.
Alternatively, inputs can be reserved by connecting the
pin to V
SS through a 1k to 10k resistor and configuring
the pin as an input.
2.9SOSC Design Recommendation
Figure 2-4 illustrates a recommended Sosc circuit
design. All components should be as close as possible
to the SOSCI and SOSCO pins of the PIC32 device,
(≤ 8 mm). Capacitors should be ceramic-type.