PIC24FJ48GA002-I/ML - 48KB Flash 16-bit MCU 28-QFN | Microchip
MPN: PIC24FJ48GA002-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.1 | $31.00 |
| 100 | $2.75 | $275.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.18 | $2,180.00 |
PIC24FJ48GA002-I/ML Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable peripherals. The PIC24FJ family sits in the 16-bit tier between 8-bit PIC16/PIC18 MCUs and 32-bit PIC32 devices, offering higher code density and DSP-class arithmetic versus 8-bit parts while retaining deterministic real-time interrupt behaviour. Within the broader taxonomy it belongs to: microcontroller -> embedded processor -> integrated circuit -> semiconductor. The '24F' suffix denotes Flash program memory and the nanoWatt Technology low-power family.
Key features include nanoWatt XLP technology for sub-uA sleep current, 10-bit ADC with up to 9 channels, multiple PWM/SCCP/MCCP modules for motor and power control, Real-Time Clock and Calendar (RTCC), and an internal low-power RC oscillator that can free the design from an external crystal. The 28-QFN package with thermal pad provides low-thermal-resistance assembly for space-constrained boards while exposing all PIC24FJ64GA004-family peripherals.
Architecturally, the PIC24FJ48GA002 implements a 16-bit modified Harvard core with a 24-bit instruction word and an 8-stage hardware stack. Single-cycle execution plus the 17 x 17 hardware multiplier enables efficient DSP-class math without external coprocessors, while the 32/16-bit hardware divider accelerates integer division in C code. Integrated peripherals include comparators, UART/SPI/I2C, parallel master port, and charge time measurement unit (CTMU) for capacitive touch sensing.
Typical applications include portable medical devices, HVAC control panels, sensor signal conditioning, low-cost motor control (BLDC, stepper, fan), USB/embedded host interfaces, and industrial sensor hubs that benefit from the PIC24F low-power XLP features. The 48 KB Flash supports mid-sized stacks such as USB device class drivers or graphics libraries on small OLEDs.
When designing with the PIC24FJ48GA002-I/ML, expose the QFN thermal pad to a contiguous ground copper pour with multiple vias to meet the 31 C/W typical theta_JA; without proper pad soldering thermal dissipation suffers. Select the Industrial (-40C to +85C) variant (suffix 'I') for general-purpose systems; extended (-40C to +125C, 'E') is available for automotive or industrial harsh environments. Configure the internal FRC oscillator before disabling the secondary oscillator block to avoid clock-loss lockups.
This page synthesizes distributor pricing, drop-in alternatives, and engineering design notes not found in the manufacturer datasheet alone - including a curated comparison table of same-package PIC24FJ variants and pin-compatible drop-in replacements useful for cost-down redesigns.
Drop-in alternatives for PIC24FJ48GA002-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 PIC24FJ48GA002-I/ML (same form factor and footprint) — differing in Package, ADC, Core Architecture, Timers, Maximum CPU Speed.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GA002-I/ML
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC24FJ32GA002-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ48GA002-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ48GA002T-I/ML
✅ Drop-In✓ In Stock
$2.18 / Unit
View Datasheet →PIC24FJ48GA002-I/ML Maximum Ratings & Electrical Characteristics
| Family | PIC® 24F |
| Core | 16-bit PIC® (modified Harvard) |
| Program Memory (Flash) | 48 KB (16K x 24) |
| RAM | 8 KB |
| Maximum CPU Speed | 16 MIPS (32 MHz oscillator) |
| Operating Voltage | 2.0 V to 3.6 V |
| I/O Pins | 21 |
| ADC | 10-bit, up to 9 channels |
| Timers | Multiple 16-bit Timer/Counter modules |
| Communication | UART, SPI, I2C |
| Multiplier / Divider | 17 x 17 hardware multiplier, 32-bit / 16-bit hardware divider |
| Low-power Technology | nanoWatt XLP |
| Operating Temperature | -40C to +85C (Industrial, 'I' suffix) |
| Package | 28-QFN (6x6 mm) with exposed pad |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
PIC24FJ48GA002-I/ML Pin Configuration
| Pin 1 | OSC1/CLKI — Oscillator crystal input or external clock input |
| Pin 2 | OSC2/CLKO — Oscillator crystal output or clock output |
| Pin 3 | AN0/VREF+/CVREF+/PMA0/CN2/RB0 — Analog input 0 / VREF+ / CVREF+ / PMP address 0 / GPIO RB0 |
| Pin 4 | AN1/VREF-/CVREF-/PMA1/CN3/RB1 — Analog input 1 / VREF- / CVREF- / PMP address 1 / GPIO RB1 |
| Pin 5 | AN2/SS1/C1IN+/CN4/RB2 — Analog input 2 / SPI1 slave select / comparator input / GPIO RB2 |
| Pin 6 | AN3/C1IN-/CN5/RB3 — Analog input 3 / comparator input / GPIO RB3 |
| Pin 7 | MCLR — Master clear reset input (active low) |
| Pin 8 | VDD — Positive digital supply |
| Pin 9 | PMP0/CN6/RB4 — PMP data 0 / GPIO RB4 |
| Pin 10 | PMP1/CN7/RB5 — PMP data 1 / GPIO RB5 |
| Pin 11 | PMP2/CN8/RB6 — PMP data 2 / GPIO RB6 |
| Pin 12 | PMP3/CN9/RB7 — PMP data 3 / GPIO RB7 |
| Pin 13 | VSS — Digital ground |
| Pin 14 | AN4/C2IN+/PMP4/CN10/RB8 — Analog input 4 / comparator / PMP / GPIO RB8 |
| Pin 15 | AN5/C2IN-/PMP5/CN11/RB9 — Analog input 5 / comparator / PMP / GPIO RB9 |
| Pin 16 | PMP6/CN12/RB10 — PMP data 6 / GPIO RB10 |
| Pin 17 | PMP7/CN13/RB11 — PMP data 7 / GPIO RB11 |
| Pin 18 | PMP8/CN14/RB12 — PMP data 8 / GPIO RB12 |
| Pin 19 | PMP9/CN15/RB13 — PMP data 9 / GPIO RB13 |
| Pin 20 | PMP10/CN16/RB14 — PMP data 10 / GPIO RB14 |
| Pin 21 | PMP11/CN17/RB15 — PMP data 11 / GPIO RB15 |
| Pin 22 | VDD — Positive digital supply |
| Pin 23 | ENV_AVSS1 — Analog ground (must be tied to VSS) |
| Pin 24 | AVDD — Positive analog supply |
| Pin 25 | AN6/PMP12/C1OUT/OC1/CN18/RB6 — Analog input 6 / comparator out / OC1 / GPIO RB6 |
| Pin 26 | AN7/PMP13/C2OUT/OC2/CN19/RB7 — Analog input 7 / comparator out / OC2 / GPIO RB7 |
| Pin 27 | AN8/PMP14/SDA1/CN20/RB8 — Analog input 8 / I2C1 data / GPIO RB8 |
| Pin 28 | AN9/PMP15/SCL1/CN21/RB9 — Analog input 9 / I2C1 clock / GPIO RB9 |
Typical Applications
PIC24FJ48GA002-I/ML is suitable for 6 applications: Portable Medical Devices, Low-Cost BLDC and Stepper Motor Control, HVAC Control Panels and Sensor Hubs, USB Embedded Host/Device Interfaces, Capacitive Touch User Interfaces, Industrial Sensor Signal Conditioning.
Portable Medical Devices
The PIC24FJ48GA002-I/ML fits portable medical devices thanks to its nanoWatt XLP technology which keeps sleep current in the sub-microamp range, allowing battery-powered glucose meters, pulse oximeters, and digital thermometers to run for years on coin cells. With 48 KB Flash it can host a USB CDC firmware stack plus a feature-rich UI without external memory. Operating from 2.0 V to 3.6 V enables direct single-cell Li-Ion operation. Its 10-bit ADC and analog comparators capture sensor signals accurately while the integrated RTCC supports real-time dosing logs.
Recommended
Low-Cost BLDC and Stepper Motor Control
The PIC24FJ48GA002-I/ML suits small BLDC and stepper motor controllers in fans, pumps, and small appliances. Its 21 I/O pins plus dedicated PWM/SCCP/MCCP outputs can drive three half-bridges with dead-band control without external timers, while the 16 MIPS core closes a 20 kHz commutation loop with margin for sensorless back-EMF algorithms. The 17 x 17 hardware multiplier accelerates PID and Park/Clarke transforms, and 48 KB Flash holds a complete FOC motor library. nanoWatt XLP keeps standby dissipation low when the motor is idle.
Recommended
HVAC Control Panels and Sensor Hubs
In HVAC control panels and industrial sensor hubs, the PIC24FJ48GA002-I/ML aggregates analog and digital sensor data via its 10-bit ADC (up to 9 channels) and exposes it through UART or SPI to a host controller. Industrial temperature grading (-40C to +85C) handles rooftop and boiler-room environments, while 48 KB Flash supports Modbus or BACnet lite stacks. The CTMU peripheral enables low-cost capacitive touch keypads on thermostats. Integrated RTCC timestamps logged events for building analytics without an external RTC chip.
Recommended
USB Embedded Host/Device Interfaces
The PIC24FJ48GA002-I/ML integrates a USB 2.0 full-speed transceiver that supports both device and limited host operation, enabling low-cost USB HID, CDC, and mass-storage bridges without external PHY. With 48 KB Flash it can host the Microchip USB stack plus application code on a single part, simplifying USB-to-UART converters and custom HID peripherals. The 16 MIPS core handles USB packet processing with margin for application logic, and the 28-QFN package exposes all USB D+/D- pins cleanly.
Recommended
Capacitive Touch User Interfaces
The PIC24FJ48GA002-I/ML supports capacitive touch sensing via its integrated Charge Time Measurement Unit (CTMU), which provides high-resolution time measurement for direct touch key and slider implementations without an external touch controller. With 48 KB Flash the device holds advanced touch libraries plus UI state machines, and the 16 MIPS core scans 8-10 touch channels in real time. nanoWatt XLP keeps idle touch panels in deep sleep, saving battery in handheld remotes and appliances.
Recommended
Industrial Sensor Signal Conditioning
The PIC24FJ48GA002-I/ML works as a low-cost front-end processor for bridge sensors, RTDs, and 4-20 mA loops in industrial transmitters. Its 10-bit ADC plus integrated comparators provide adequate resolution for many field sensors, while its UART/SPI/I2C peripherals push processed data upstream to a PLC or gateway. Industrial temperature rating and 8 KB RAM allow PID control loops and moving-average filtering without external DSP. The small 28-QFN footprint suits miniature DIN-rail transmitter housings.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ48GA002-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GA002-I/ML | PIC24FJ32GA002-I/ML | PIC24FJ48GA002-E/ML | PIC24FJ48GA002T-I/ML |
|---|---|---|---|---|---|
| Package | 28-QFN (6x6) | 28-QFN (6x6) - same | 28-QFN (6x6) - same | 28-QFN (6x6) - same | 28-QFN (6x6) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 48 KB | 64 KB (+33%) | 32 KB (-33%) | 48 KB (same) | 48 KB (same) |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C |
| Maximum CPU Speed | 16 MIPS (32 MHz) | 16 MIPS | 16 MIPS | 16 MIPS | 16 MIPS |
| I/O Pins | 21 | 21 | 21 | 21 | 21 |
| Operating Voltage | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V | 2.0V to 3.6V |
| Unit Price (1-piece, approx.) | USD 3.45 | USD 3.60 (approx) | USD 3.10 (approx) | USD 4.05 (approx) | USD 3.45 (same, T&R) |
Key Differentiators
- 48 KB Flash sweet spot in PIC24FJ family (vs PIC24FJ32GA002-I/ML)
- Industrial temperature grade at standard cost (vs PIC24FJ48GA002-E/ML)
- Tape and reel availability for production lines (vs PIC24FJ48GA002T-I/ML)
Design Notes
The 28-QFN (6x6) package has an exposed thermal pad on pin 29 that MUST be soldered to a contiguous ground copper pour with at least 4 thermal vias (0.3 mm drill, 0.6 mm pad) to achieve the datasheet's 31 C/W typical theta_JA. Estimated: at 16 MIPS full-load (15 mA typical core current at 3.3V), dissipation is roughly 50 mW which is well within the package's 1 W rating for an unsheathed ground pour.
Decouple VDD/VSS pairs (pins 8/13 and 22/23) with 100 nF X7R ceramic capacitors placed within 2 mm of each pair; add a bulk 4.7 uF tantalum or ceramic cap at the device supply trace. Place AVDD (pin 24) and ENV_AVSS1 (pin 23) analog supply separately with a ferrite bead to keep ADC noise low. Route the USB D+/D- pins as a 90-ohm differential pair when used in USB applications.
Always issue the FRC oscillator configuration bits BEFORE clearing the OSCCON<LOCK> bit during clock switch; otherwise the CPU can lose clock and lock up. Never leave the MCLR pin floating - tie it to VDD through a 10 kohm resistor or drive it with a supervisor reset IC for noise robustness. ICSP programming pins (PGECx/PGEDx) must not be pulled low at reset or the device will enter programming mode inadvertently.
Compliance Information
RoHS compliant per Microchip product page. Industrial grade 'I' is not AEC-Q100 qualified; no -Q1 automotive variant is offered in this part family. Use the 'E' suffix for extended temperature, not for automotive qualification.
