PIC24FJ64GA002-I/SO - 16-bit 32MHz 64KB Flash MCU | Microchip
MPN: PIC24FJ64GA002-I/SO ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.94 | $5.94 |
| 10 | $5.45 | $54.50 |
| 100 | $4.82 | $482.00 |
| 500 | $4.25 | $2,125.00 |
| 1,000 | $3.78 | $3,780.00 |
PIC24FJ64GA002-I/SO Overview
What is a PIC24F microcontroller? The PIC24F family from Microchip is a 16-bit flash microcontroller family built on a modified Harvard architecture with a 16-bit wide data path and 24-bit wide instructions. Within the broader taxonomy, PIC24F sits between 8-bit PIC MCUs and 32-bit PIC32 devices, occupying the mid-range slot where engineers need more compute and memory than 8-bit offers, but the simplicity and low cost of a PIC rather than the complexity of an ARM Cortex-M part. The 'FJ' sub-family specifically adds nanoWatt XLP (eXtreme Low Power) technology for portable designs.
Key differentiating specifications include 64KB Flash (22K x 24 instruction words), 8KB SRAM, 21 digital I/O pins, 16-channel 10-bit ADC, two UART modules, two SPI modules, and two I2C modules. Real-Time Clock/Calendar (RTCC) hardware and a 32kHz secondary oscillator support time-keeping applications without the main core running. Five 16-bit timers/counters and nine 16-bit PWM channels enable motor-control and lighting designs. JTAG and ICSP (In-Circuit Serial Programming) provide flexible debug and field-upgrade paths.
Architecturally, the PIC24FJ64GA002 uses a modified Harvard bus with separate program and data paths, allowing simultaneous instruction fetch and data access. The CPU executes most instructions in one cycle, delivering 16 MIPS at 32MHz. The 24-bit instruction width supports large immediate operands and a uniform addressing model across the entire memory map. A peripheral pin-select (PPS) feature on related parts is not present here, but the device still offers flexible peripheral mapping within its 28-pin envelope.
Typical applications include industrial sensor nodes, USB device controllers (with on-chip USB 2.0 FS), home-automation gateways, low-power remote controls, battery-powered data loggers, motor-control fan drivers, and consumer white-goods user interfaces. The 28-pin SOIC package is easy to hand-solder and breadboard-friendly for prototyping, while remaining compatible with high-volume SMT lines.
When designing with this device, allocate sufficient decoupling (100nF plus 10uF bulk) close to VDD/AVDD pins. The PIC24FJ64GA002 supports a wide 2.0V-3.6V supply range, but the ADC accuracy is best at 3.3V; for 5V system interfaces, add level shifters on I/O lines. The internal 8MHz Fast RC oscillator can be trimmed using the FCR calibration register, allowing designs to operate without an external crystal in cost-sensitive applications.
This page synthesizes distributor pricing, drop-in alternative parts in the same SOIC-28 footprint, and practical design notes not found in the manufacturer datasheet alone, helping engineers evaluate the PIC24FJ64GA002-I/SO for both new designs and as a drop-in replacement in legacy PIC24FJ designs.
Drop-in alternatives for PIC24FJ64GA002-I/SO — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC24FJ64GA002-I/SO (same form factor and footprint) — differing in Package, ADC, Core Architecture, Operating Temperature, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ128GA002-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ64GA002-I/ML
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC24FJ64GA002-I/SS
✅ Drop-In✓ In Stock
$2.51 / Unit
View Datasheet →PIC24FJ32GA002-I/SO
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ48GA002-I/SO
✅ Drop-In✓ In Stock
$0.83 / Unit
View Datasheet →PIC24FJ16GA002-I/SO
✅ Drop-In✓ In Stock
$2.27 / Unit
View Datasheet →PIC24FJ64GA002-I/SO Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F 16-bit RISC |
| Program Memory (Flash) | 64 KB (22K x 24 instructions) |
| Data Memory (SRAM) | 8 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage Range | 2.0 V to 3.6 V |
| I/O Pins | 21 |
| ADC | 10-bit, 16 channels |
| UART Modules | 2 |
| SPI Modules | 2 |
| I2C Modules | 2 |
| Timers | 5 x 16-bit |
| PWM Channels | 9 x 16-bit |
| Operating Temperature | -40 C to +85 C (Industrial) |
| Package | 28-pin SOIC Wide (7.50 mm body) |
| Mounting Type | Surface Mount |
| Programming/Debug | ICSP and JTAG boundary scan |
| RoHS Status | Compliant |
PIC24FJ64GA002-I/SO Pin Configuration
| Pin 1 | SDA2/RG3 — I2C2 data or GPIO RG3 |
| Pin 2 | SCL2/RG2 — I2C2 clock or GPIO RG2 |
| Pin 3 | RP7/RB7 — Remappable peripheral or GPIO RB7 |
| Pin 4 | RP6/RB6 — Remappable peripheral or GPIO RB6 |
| Pin 5 | RP5/RB5 — Remappable peripheral or GPIO RB5 |
| Pin 6 | RP4/RB4 — Remappable peripheral or GPIO RB4 |
| Pin 7 | RP3/RB3 — Remappable peripheral or GPIO RB3 |
| Pin 8 | RP2/RB2 — Remappable peripheral or GPIO RB2 |
| Pin 9 | OSC1/RA0 — External oscillator input or GPIO RA0 |
| Pin 10 | OSC2/RA1 — External oscillator output or GPIO RA1 |
| Pin 11 | VDD — Positive supply voltage (2.0V-3.6V) |
| Pin 12 | VBUS — USB bus voltage detect (USB variants) |
| Pin 13 | D-/RA3 — USB D- or GPIO RA3 |
| Pin 14 | D+/RA2 — USB D+ or GPIO RA2 |
| Pin 15 | CVREF/RA4 — Comparator voltage reference or GPIO RA4 |
| Pin 16 | RCV/RP14/RB14 — USB RCV or remappable peripheral RB14 |
| Pin 17 | VBAT/RC1 — RTCC battery or GPIO RC1 |
| Pin 18 | SOSCI/RP13/RB13 — 32kHz oscillator or GPIO RB13 |
| Pin 19 | SOSCO/RP12/RB12 — 32kHz oscillator or GPIO RB12 |
| Pin 20 | MCLR/RA5 — Master clear reset (active low) or GPIO RA5 |
| Pin 21 | RP11/RB11 — Remappable peripheral or GPIO RB11 |
| Pin 22 | RP10/RB10 — Remappable peripheral or GPIO RB10 |
| Pin 23 | RP9/RB9 — Remappable peripheral or GPIO RB9 |
| Pin 24 | RP8/RB8 — Remappable peripheral or GPIO RB8 |
| Pin 25 | VSS — Ground reference |
| Pin 26 | AVDD — Analog positive supply (filtered) |
| Pin 27 | AVSS — Analog ground |
| Pin 28 | VREF+/RA9 — ADC reference positive or GPIO RA9 |
Typical Applications
PIC24FJ64GA002-I/SO is suitable for 7 applications: Industrial Sensor Data Logger, USB Human Interface Device (HID) Controller, Battery-Powered Remote Control, Home Automation Sensor Node, Motor Control Fan Driver, Consumer White Goods User Interface, Educational Development Platform.
Industrial Sensor Data Logger
The PIC24FJ64GA002-I/SO fits industrial sensor data loggers because its 10-bit 16-channel ADC and 21 GPIO are well matched to multi-sensor acquisition. The 8KB SRAM is sufficient for buffering logged readings, while 64KB Flash accommodates the firmware, calibration tables, and a FAT file-system driver on an external SPI flash or SD card. At 3.3V operation with nanoWatt XLP low-power modes, the device achieves deep-sleep currents under 1 uA, extending battery life across long field deployments. The 32MHz core (16 MIPS) handles filtering and averaging without bottlenecking the ADC sampling rate. The 28-SOIC wide package remains easy to hand-rework in field-returned units.
Recommended
USB Human Interface Device (HID) Controller
The PIC24FJ64GA002-I/SO serves as a USB full-speed device controller in HID applications such as custom keyboards, mice, and game controllers. On-chip USB 2.0 FS hardware with integrated transceiver eliminates the need for an external PHY, reducing BOM cost. The two UART and two SPI peripherals coexist with the USB peripheral, allowing the MCU to forward sensor data over USB while maintaining serial debug output. At 16 MIPS, HID class firmware and HID report processing fit comfortably within the 64KB Flash budget. The 2.0V-3.6V wide supply range supports both USB bus-powered 3.3V regulators and battery-powered operation.
Recommended
Battery-Powered Remote Control
The PIC24FJ64GA002-I/SO is well suited for handheld remote controls because its nanoWatt XLP sleep currents under 1 uA allow multi-year coin-cell operation. The 21 GPIO pins support IR transmission, multiple buttons, and an LED status indicator, while the 16-bit timers generate accurate PWM for IR carrier frequencies. The 2.0V-3.6V supply range directly accommodates 2x AA or coin-cell chemistries with no additional regulator. The 10-bit ADC reads battery voltage for low-battery warnings. With 64KB Flash, even graphical LCD menu firmware fits comfortably.
Recommended
Home Automation Sensor Node
The PIC24FJ64GA002-I/SO anchors home-automation sensor nodes communicating via UART-attached Wi-Fi or sub-GHz radio modules. Its two UART ports simultaneously handle a Wi-Fi module (e.g., ESP-01) and a debug console, while the two I2C ports connect environmental sensors like temperature, humidity, and ambient light. The 32MHz core executes JSON serialization and command parsing without delaying radio transmissions. With 8KB SRAM, the MCU buffers outgoing MQTT-style payloads between network transmissions. The wide 2.0V-3.6V supply accommodates USB-powered or battery-powered operation.
Recommended
Motor Control Fan Driver
The PIC24FJ64GA002-I/SO drives BLDC or brushed DC fan motors using its nine 16-bit PWM channels and five timers for back-EMF sensing and RPM feedback. The 10-bit ADC monitors motor current and supply voltage for fault detection and soft-start profiles. At 16 MIPS, closed-loop PID control runs alongside serial command processing without missing control-loop deadlines. The 2.0V-3.6V supply range supports direct 3.3V low-voltage motors common in small cooling fans. The 28-SOIC package handles the moderate thermal dissipation of low-power motor drive efficiently.
Recommended
Consumer White Goods User Interface
The PIC24FJ64GA002-I/SO serves as the user-interface controller in white-goods appliances such as washing machines, dishwashers, and microwave ovens. Its 21 GPIO pins drive 7-segment LED displays, capacitive touch buttons, and rotary encoders, while the I2C ports connect temperature sensors and EEPROM for settings storage. The wide -40C to +85C industrial temperature range handles kitchen thermal environments without derating. The 64KB Flash stores multi-language menu firmware and self-test routines. The 28-SOIC wide package is easy to assemble on consumer-product SMT lines.
Recommended
Educational Development Platform
The PIC24FJ64GA002-I/SO is widely used in university courses and hobbyist development boards because of its free MPLAB X IDE toolchain, ICD3/PICKit programmer compatibility, and abundant example code. The 28-SOIC wide package is breadboard-friendly via SOIC-to-DIP adapters, supporting hand-wired student projects. The 16-bit architecture introduces learners to RISC concepts without the complexity of ARM Cortex-M. The 64KB Flash accommodates full tutorials on UART, SPI, I2C, ADC, and PWM peripherals. The robust industrial temperature range prevents damage during student mishandling.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GA002-I/SO — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ128GA002-I/SO | PIC24FJ64GA002-I/ML | PIC24FJ64GA002-I/SS | PIC24FJ32GA002-I/SO | PIC24FJ48GA002-I/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (wide, 7.50mm) | 28-SOIC (wide) - same | 28-QFN (6x6mm) - differs | 28-SSOP (5.30mm) - differs | 28-SOIC (wide) - same | 28-SOIC (wide) - same |
| Flash Memory | 64 KB | 128 KB | 64 KB | 64 KB | 32 KB | 48 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Maximum CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS |
| Operating Voltage | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V | 2.0 V to 3.6 V |
| ADC | 10-bit, 16 channels | 10-bit, 16 channels | 10-bit, 16 channels | 10-bit, 16 channels | 10-bit, 16 channels | 10-bit, 16 channels |
| USB Support | Yes (FS USB on GA002/GB002) | Yes | Yes | Yes | Yes | Yes |
| Pin-to-Pin Compatible | Yes (28-SOIC baseline) | Yes | Package differs (QFN-28) | Package differs (SSOP-28) | Yes | Yes |
| Approx. Unit Price (qty 1) | $5.94 | $6.80 - $7.20 | $5.94 - $6.20 | $5.70 - $6.00 | $4.95 - $5.30 | $5.40 - $5.80 |
Key Differentiators
- Same-footprint Flash upgrade path within the PIC24FJ family (vs PIC24FJ64GA002-I/SO itself)
- Integrated full-speed USB 2.0 without external PHY (vs External USB-serial bridges like MCP2200 or FT232R)
- nanoWatt XLP technology for sub-1uA sleep current (vs Standard PIC24F non-XLP variants)
Design Notes
Place a 100nF ceramic decoupling capacitor as close as physically possible to every VDD pin (pin 11) and a 10uF bulk capacitor near the supply entry point. For the ADC, route a separate filtered AVDD supply (pin 26) from VDD through a ferrite bead or 10-ohm resistor, and decouple with 100nF plus 10uF. According to the Microchip PIC24FJ family datasheet, the ADC accuracy is specified with a low-noise AVDD reference; switching noise on AVDD directly degrades ADC SNR.
Do not leave the MCLR pin (pin 20) floating - it must be tied to VDD through a 10k-ohm pull-up resistor, and optionally a 100nF cap to ground for noise filtering. A floating MCLR causes random resets. When designing for in-circuit programming, place a Schottky diode or 100-ohm resistor between VDD and the ICSP programmer's VPP to prevent back-powering the main supply through the programmer. The PIC24FJ64GA002-I/SO also requires the PGD/PGC lines to be free of series resistors for ICD debugging.
Route the crystal traces (OSC1 pin 9, OSC2 pin 10) as short as possible and guard them with a ground plane on both sides to minimize capacitive coupling and EMI. Keep digital switching signals at least 5mm away from the crystal traces. If using the 32kHz SOSC oscillator (SOSCI/SOSCO pins 18-19), treat its traces with the same care, and avoid routing any high-frequency signal across them. The VREF+/RA9 pin (28) should be a quiet analog node; bypass it with 100nF if used as ADC reference.
At 32MHz core speed with all peripherals active, the PIC24FJ64GA002-I/SO dissipates approximately 30-50 mW typical, well within the SOIC-28 thermal rating of around 100 C/W junction-to-ambient theta_JA. In sealed enclosures above 60 C ambient, consider reducing core speed to 16MHz or adding a small copper pour area to the thermal pad (none on this package). Sleep-mode currents under 1 uA mean thermal dissipation is negligible in battery-powered applications.
Compliance Information
RoHS compliant per Microchip product page; not AEC-Q100 qualified (industrial -40C to +85C only, not automotive). For automotive applications, contact Microchip about the PIC24F KA/KL sub-family which carries AEC-Q100.
