PIC24FJ64GA002-I/ML - 16-bit MCU, 64KB Flash, 28-QFN | Microchip
MPN: PIC24FJ64GA002-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.02 | $4.02 |
| 10 | $3.65 | $36.50 |
| 100 | $3.1 | $310.00 |
| 500 | $2.78 | $1,390.00 |
| 1,000 | $2.45 | $2,450.00 |
PIC24FJ64GA002-I/ML Overview
A microcontroller (MCU) is a single-chip computer containing a CPU core, volatile and non-volatile memory, and programmable peripherals. Microcontrollers sit within the broader semiconductor hierarchy as integrated circuits > digital logic ICs > microcontrollers, and they form the lowest-level intelligence layer beneath microprocessors in embedded systems. The PIC24F family uses a modified Harvard 16-bit architecture with a wide 24-bit instruction word that improves code density relative to 8-bit MCUs while keeping the peripheral ecosystem simple.
Key features include a 16-channel 10-bit A/D converter with 500 ksps throughput, two UART/SPI/I2C configurable serial interfaces, five 16-bit timers, a real-time clock calendar, and a peripheral pin select (PPS) remappable I/O subsystem on 21 general-purpose I/O pins. The integrated charge time measurement unit (CTMU) enables touch sensing and capacitive measurement, while the JTAG interface supports in-circuit debugging and boundary-scan testing per the IEEE 1149.1 standard.
Architecturally, the PIC24FJ64GA002 separates program Flash (64 KB) and data EEPROM (no separate EEPROM on this part; emulation is supported from Flash) from the 8 KB SRAM, with a unified 16 KB data Flash auxiliary region used for EEPROM emulation and parameter storage. The 16-bit modified-Harvard pipeline, hardware multiplier, and divide engine deliver deterministic 16 MIPS throughput, while the integrated 8 MHz internal oscillator plus PLL simplify BOM cost by eliminating external clocking hardware in many designs.
Typical applications include automotive body controllers, HVAC control modules, industrial sensor interfaces, low-power handheld instrumentation, and USB/connectivity co-processor bridging. The combination of 64 KB Flash and 8 KB SRAM is well matched to mid-tier embedded protocols and small graphical user interfaces. The AEC-Q100 grade also makes it suitable for under-hood and cabin automotive subsystems where the -40C to +85C range is mandatory.
When designing with this device, ensure the QFN exposed pad is soldered to a sufficiently large copper pour to meet the 31 C/W typical thermal resistance and to provide a low-inductance ground reference. PPS configuration must be programmed before enabling peripherals, and unused pins should be configured as outputs low to minimize current leakage on this 16 MIPS architecture.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for PIC24FJ64GA002-I/ML — 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/ML (same form factor and footprint) — differing in Package, Operating Temperature, Timers, ADC, Core Architecture.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GA002T-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ64GA004-I/ML
✅ Drop-In✓ In Stock
$4.91 / Unit
View Datasheet →PIC24FJ48GA002-I/ML
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC24FJ32GA002-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ16GA002-I/ML
✅ Drop-In✓ In Stock
$2.4 / Unit
View Datasheet →PIC24FJ64GA002-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F 16-bit RISC modified Harvard |
| Program Flash Memory | 64 KB (22K x 24 instruction words) |
| RAM | 8 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Supply Voltage Range | 2.0 V to 3.6 V |
| Operating Temperature Range | -40C to +85C (Industrial, 'I') |
| General-Purpose I/O Pins | 21 |
| ADC | 10-bit, 16-channel, 500 ksps |
| Timers | Five 16-bit timers |
| Communication Interfaces | 2x UART/SPI/I2C (configurable) |
| Peripheral Pin Select (PPS) | Yes |
| Real-Time Clock/Calendar (RTCC) | Yes |
| CTMU (Charge Time Measurement Unit) | Yes |
| JTAG / Debug Interface | Yes (ICD 3 / REAL ICE compatible) |
| Package | 28-pin QFN (6x6 mm) with exposed pad (ML) |
| Mounting Type | Surface Mount |
| AEC-Q100 Automotive Qualification | Yes |
| RoHS Status | Compliant |
| MSL (Moisture Sensitivity Level) | MSL1 or MSL3 - refer to packaging label |
PIC24FJ64GA002-I/ML Pin Configuration
| Pin 1 | MCLR — Master Clear (Reset) input, drive low to reset |
| Pin 2 | RA0/AN0 — GPIO RA0 / Analog input AN0 |
| Pin 3 | RA1/AN1 — GPIO RA1 / Analog input AN1 |
| Pin 4 | RB0/AN2 — GPIO RB0 / Analog input AN2 / PGED1 |
| Pin 5 | RB1/AN3 — GPIO RB1 / Analog input AN3 / PGEC1 |
| Pin 6 | RB2/AN4 — GPIO RB2 / Analog input AN4 |
| Pin 7 | RB3/AN5 — GPIO RB3 / Analog input AN5 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | RA2/AN6 — GPIO RA2 / Analog input AN6 |
| Pin 10 | RA3/AN7 — GPIO RA3 / Analog input AN7 |
| Pin 11 | RB4/AN8 — GPIO RB4 / Analog input AN8 |
| Pin 12 | RB5/AN9 — GPIO RB5 / Analog input AN9 |
| Pin 13 | RB6/AN10 — GPIO RB6 / Analog input AN10 |
| Pin 14 | RB7/AN11 — GPIO RB7 / Analog input AN11 |
| Pin 15 | AVDD — Analog supply voltage |
| Pin 16 | AVSS — Analog ground reference |
| Pin 17 | RB8/AN12 — GPIO RB8 / Analog input AN12 |
| Pin 18 | RB9/AN13 — GPIO RB9 / Analog input AN13 |
| Pin 19 | RC0 — GPIO RC0 |
| Pin 20 | RC1 — GPIO RC1 |
| Pin 21 | RC2 — GPIO RC2 |
| Pin 22 | RC3 — GPIO RC3 |
| Pin 23 | RC4 — GPIO RC4 |
| Pin 24 | RC5 — GPIO RC5 |
| Pin 25 | RC6 — GPIO RC6 |
| Pin 26 | RC7 — GPIO RC7 |
| Pin 27 | RC8 — GPIO RC8 |
| Pin 28 | VDD — Digital supply voltage |
| Pin 29 | EP — Exposed thermal pad - must be soldered to ground pour for thermal performance |
Typical Applications
PIC24FJ64GA002-I/ML is suitable for 6 applications: Automotive Body Control Modules, HVAC Control and Climate Modules, Industrial Sensor Hubs and IO-Link Bridges, Low-Power Handheld Instrumentation, USB Connectivity Co-Processor Bridging, LED Lighting and Signage Controllers.
Automotive Body Control Modules
The PIC24FJ64GA002-I/ML fits automotive BCM designs because its AEC-Q100 qualification guarantees operation from -40C to +85C with the input-voltage transients common in 12V vehicle buses. The 16 MIPS throughput drives LIN bus handling, lighting PWM, and switch debouncing simultaneously, while the 64 KB Flash accommodates bootloader plus application code. The PPS subsystem lets engineers route UART, SPI, and I2C peripherals to any GPIO, simplifying PCB routing around body controller connectors. The QFN-28 (6x6) footprint with exposed pad supports under-hood thermal loads. Designers should pair it with the MCP2515 CAN controller and TJA1050 transceiver for full automotive networking.
Recommended
HVAC Control and Climate Modules
HVAC climate control modules benefit from the PIC24FJ64GA002-I/ML's five 16-bit timers for precise PWM generation on fan motors and damper actuators. The 10-bit 16-channel ADC at 500 ksps handles multiple temperature and pressure sensors in real time, while the 8 KB SRAM buffers sensor-fusion calculations before display update. The 64 KB Flash stores lookup tables for PID control curves across the full operating envelope. AEC-Q100 grade plus the -40C to +85C range suits dashboard and headliner mounting where ambient temperatures swing widely. Use the RTCC for scheduling compressor defrost cycles and night-mode temperature set-backs.
Recommended
Industrial Sensor Hubs and IO-Link Bridges
Industrial sensor hubs and IO-Link bridges leverage the PIC24FJ64GA002-I/ML's 16 MIPS performance to handle digital sensor protocols, framing, and diagnostics while the 64 KB Flash stores device description (IODD) templates. The PPS remappable I/O lets designers use a single MCU part across multiple sensor SKUs with different pinout requirements, simplifying inventory. The two UART/SPI/I2C configurable interfaces connect directly to IO-Link PHY chips and UART-based sensor front-ends. The 21 GPIO pins accommodate status LEDs, configuration switches, and M12 connector signals. The exposed pad provides low-impedance ground for EMI-sensitive analog front-ends.
Recommended
Low-Power Handheld Instrumentation
Handheld test instruments and battery-powered data loggers benefit from the PIC24FJ64GA002-I/ML's compact QFN-28 footprint and modest 16 MIPS throughput, which minimizes active current draw versus higher-performance MCUs. The 64 KB Flash accommodates waveform math libraries and menu systems, while the 8 KB SRAM buffers acquired samples before display. The CTMU peripheral enables touch-button interfaces without external controller ICs, reducing BOM cost. The RTCC keeps accurate timestamps during sleep modes for logging applications. The integrated 10-bit ADC is sufficient for battery monitoring and transducer signal conditioning in field-portable instruments.
Recommended
USB Connectivity Co-Processor Bridging
The PIC24FJ64GA002-I/ML serves as a USB/connectivity co-processor bridging to a host MCU by handling USB enumeration, descriptor management, and protocol translation while the host application runs on a separate processor. The 16 MIPS throughput processes USB interrupt traffic without burdening slower 8-bit cores. The two UART/SPI/I2C interfaces connect to virtually any host MCU, and PPS routing simplifies signal fan-out. The 64 KB Flash stores USB class drivers (HID, CDC, MSD), while 8 KB SRAM buffers endpoint packets. The AEC-Q100 grade makes it automotive-infotainment-friendly for rear-seat USB charging ports and telematics modules.
Recommended
LED Lighting and Signage Controllers
LED lighting controllers and digital signage drivers use the PIC24FJ64GA002-I/ML's five 16-bit timers to generate smooth PWM dimming across multiple LED channels without flicker. The PPS subsystem lets designers map PWM outputs to any GPIO, simplifying multi-zone layouts. The 16 MIPS CPU processes DMX512 or DALI protocol frames in real time while running dimming curves and color-mixing algorithms. The 64 KB Flash accommodates lighting scene presets and boot logos, while the 8 KB SRAM buffers frame data. The QFN-28 exposed pad handles thermal loads from adjacent LED driver stages in compact fixtures.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ64GA002-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GA002T-I/ML | PIC24FJ64GA004-I/ML | PIC24FJ48GA002-I/ML | PIC24FJ32GA002-I/ML | PIC24FJ16GA002-I/ML |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | QFN-28 (6x6 mm) with EP | QFN-28 (6x6 mm) with EP - same | QFN-28 (6x6 mm) with EP - same | QFN-28 (6x6 mm) with EP - same | QFN-28 (6x6 mm) with EP - same | QFN-28 (6x6 mm) with EP - same |
| Program Flash | 64 KB | 64 KB (same die) | 80 KB (+25%) | 48 KB (-25%) | 32 KB (-50%) | 16 KB (-75%) |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 4 KB (-50%) |
| Max 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 |
| GPIO Pins | 21 | 21 | 21 | 21 | 21 | 21 |
| ADC | 10-bit, 16-ch, 500 ksps | 10-bit, 16-ch, 500 ksps | 10-bit, 16-ch, 500 ksps | 10-bit, 16-ch, 500 ksps | 10-bit, 16-ch, 500 ksps | 10-bit, 16-ch, 500 ksps |
| AEC-Q100 | Yes | Yes | Yes | Yes | Yes | Yes |
| Temperature Range | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
Key Differentiators
- AEC-Q100 automotive qualification in QFN-28 (vs PIC24FJ32GA002-I/ML)
- Peripheral Pin Select on all GPIO (vs PIC24FJ64GA002-I/SO (SOIC variant))
- CTMU touch-sensing peripheral integrated (vs PIC24FJ16GA002-I/ML)
Design Notes
Solder the QFN-28 exposed pad (pin 29) to a continuous ground pour of at least 0.25 square inch. The exposed pad carries thermal dissipation (theta_JA approximately 31 C/W) and provides the low-inductance ground reference required for ADC accuracy. Use 0.1 uF + 10 uF ceramic decoupling on VDD (pin 28) placed within 5 mm, and an additional 0.1 uF + 10 uF pair on AVDD (pin 15) for analog noise isolation. Place a ferrite bead between digital VDD and analog AVDD if the ADC is in heavy use to prevent digital switching noise coupling into the analog reference.
Configure the Peripheral Pin Select (PPS) registers before enabling any peripheral. The PPS subsystem must be unlocked via the IOLOCK bit sequence before writing the RPnR (output) and RPnR (input) mapping registers, then re-locked to prevent runaway code from changing pin assignments. Unused pins should be configured as digital outputs driving low to minimize current leakage - floating inputs on this MCU can source/sink tens of microamps each. Place the JTAG/ICSP pins (RB0/PGED1, RB1/PGEC1) on convenient header access points if you plan to use MPLAB ICD 3 or REAL ICE in-circuit debug.
Do not exceed the absolute maximum VDD of 3.6 V - the PIC24FJ64GA002 is NOT 5V tolerant on VDD, and overvoltage will damage the part. MCLR (pin 1) must have a 10 kV pull-up to VDD, and if used as a reset, the typical 4.7 kV pull-up to VDD with a 100 nF cap to ground prevents false resets. The ADC input voltage must remain within 0V to AVDD voltage; exceeding AVDD by 0.3V or going below AVSS by 0.3V triggers ADC input protection clamping. The Flash endurance is rated at 1000 erase/write cycles minimum for self-programming - design firmware to minimize EEPROM emulation wear by spreading writes across pages.
Estimated: at 32 MHz full-speed operation with all peripherals active, the PIC24FJ64GA002 draws approximately 25 mA from 3.3V (about 82 mW). In Sleep mode with RTCC active, current drops to under 10 uA. For battery-powered applications, use the internal 8 MHz RC oscillator + PLL configuration and disable unused peripherals through the PMDx (peripheral module disable) registers to save additional current. The BOR (Brown-Out Reset) module should be enabled in software to protect against VDD brown-out events that can corrupt Flash and SRAM state.
Compliance Information
RoHS and REACH compliance per Microchip product page and Arrow/Future Electronics listings. AEC-Q100 qualified for automotive applications per Microchip datasheet. The 'I' suffix denotes industrial temperature grade (-40C to +85C); automotive customers typically also see the 'E' suffix variants for the same QFN-28 with -40C to +125C grade.
