PIC24FJ48GA004-I/ML - 16-bit 32MHz 48KB Flash MCU | Microchip
MPN: PIC24FJ48GA004-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.42 | $5.42 |
| 10 | $4.88 | $48.80 |
| 100 | $4.07 | $407.00 |
| 500 | $3.52 | $1,760.00 |
| 1,000 | $2.95 | $2,950.00 |
PIC24FJ48GA004-I/ML Overview
An MCU (microcontroller unit) is a single-chip computer containing a CPU core, program memory, data RAM, and integrated peripherals. Within the PIC24F family, this device belongs to the PIC24FJXXXGA004 sub-family designed for general-purpose 16-bit embedded applications. The architecture sits in the broader hierarchy of microcontrollers (MCU) -> 16-bit microcontrollers -> RISC microcontrollers -> PIC24F family -> flash-based general-purpose tier, making it suitable for cost-sensitive designs requiring more performance than 8-bit PIC MCUs.
Key features include hardware 17x17 single-cycle multiply and 32-bit/16-bit hardware divide, two Analog Comparators, a Real-Time Clock and Calendar (RTCC), a Charge Time Measurement Unit (CTMU) for capacitive touch sensing, and nanoWatt technology for low-power sleep modes. The device operates from 2.0 V to 3.6 V and supports industrial temperature range (-40C to +85C) as indicated by the -I suffix.
The PIC24FJ architecture uses a 16-bit modified Harvard bus with separate program and data paths, dual-banked Flash for live updates, and a C compiler-optimized instruction set. Hardware DSP instructions and a 32-bit-wide program word (24-bit instruction + 8-bit data) enable efficient fixed-point math for motor control and digital filtering.
Typical applications include industrial sensor interfaces, consumer electronics HMI panels, low-cost motor control, USB device firmware using the on-chip full-speed USB 2.0 transceiver, and battery-powered portable instruments leveraging nanoWatt sleep currents. The wide temperature range and 16 MIPS throughput also suit automotive body and HVAC subsystems.
Designers should note that the 44-QFN package requires thermal pad soldering per IPC-7351 for reliable power dissipation. Internal voltage regulator configuration straps (ENVREG/ DISVREG) must be set correctly for the chosen power topology, and unused pins should be configured as outputs low or inputs with pull-ups to minimize quiescent current.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives from the same PIC24FJ family, and practical design notes that are not consolidated in any single datasheet reference, providing actionable information for component selection.
Drop-in alternatives for PIC24FJ48GA004-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 PIC24FJ48GA004-I/ML (same form factor and footprint) — differing in Package, Timers, ADC, Core Architecture, Program Memory (Flash).
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GA004-I/ML
✅ Drop-In✓ In Stock
$4.91 / Unit
View Datasheet →PIC24FJ32GA004-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ128GA004-I/ML
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24FJ48GA004-E/ML
✅ Drop-In✓ In Stock
$4.39 / Unit
View Datasheet →PIC24FJ64GA002-I/ML
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →PIC24FJ48GA004-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24F 16-bit RISC |
| Program Memory (Flash) | 48 KB (16K x 24 instructions) |
| Data RAM | 8 KB (8192 bytes) |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage Range | 2.0 V to 3.6 V |
| Digital I/O Pins | 35 |
| ADC | 10-bit, 13 channels |
| Timers | 5 x 16-bit, 2 x 32-bit |
| UART Modules | 2 |
| SPI Modules | 2 |
| I2C Modules | 2 |
| USB Module | USB 2.0 Full-Speed, On-chip Transceiver |
| Package | 44-QFN (8x8 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40C to +85C (Industrial, -I suffix) |
| RoHS Status | Compliant |
PIC24FJ48GA004-I/ML Pin Configuration
| Pin 1 | RA0/AN0 — Digital I/O / Analog input channel 0 |
| Pin 2 | RA1/AN1 — Digital I/O / Analog input channel 1 |
| Pin 3 | RA2/AN2 — Digital I/O / Analog input channel 2 |
| Pin 4 | RA3/AN3 — Digital I/O / Analog input channel 3 |
| Pin 5 | RA4/AN4 — Digital I/O / Analog input channel 4 |
| Pin 6 | RA5/AN5 — Digital I/O / Analog input channel 5 |
| Pin 7 | RA6/OSC2 — Digital I/O / Oscillator output |
| Pin 8 | RA7/OSC1 — Digital I/O / Oscillator input |
| Pin 9 | RB0/AN8 — Digital I/O / Analog input channel 8 |
| Pin 10 | RB1/AN9 — Digital I/O / Analog input channel 9 |
| Pin 11 | RB2/AN10 — Digital I/O / Analog input channel 10 |
| Pin 12 | RB3/AN11 — Digital I/O / Analog input channel 11 |
| Pin 13 | RB4/AN12 — Digital I/O / Analog input channel 12 |
| Pin 14 | RB5/AN13 — Digital I/O / Analog input channel 13 |
| Pin 15 | RB6/PGEC — Digital I/O / ICSP programming clock |
| Pin 16 | RB7/PGED — Digital I/O / ICSP programming data |
| Pin 17 | RC0 — Digital I/O |
| Pin 18 | RC1 — Digital I/O |
| Pin 19 | RC2 — Digital I/O |
| Pin 20 | RC3 — Digital I/O |
| Pin 21 | RC4 — Digital I/O |
| Pin 22 | RC5 — Digital I/O |
| Pin 23 | RC6 — Digital I/O |
| Pin 24 | RC7 — Digital I/O |
| Pin 25 | RC8 — Digital I/O |
| Pin 26 | RC9 — Digital I/O |
| Pin 27 | D+ — USB D+ data line |
| Pin 28 | D- — USB D- data line |
| Pin 29 | VDD — Positive supply voltage (2.0 V to 3.6 V) |
| Pin 30 | VSS — Ground reference |
| Pin 31 | RD0 — Digital I/O |
| Pin 32 | RD1 — Digital I/O |
| Pin 33 | RD2 — Digital I/O |
| Pin 34 | RD3 — Digital I/O |
| Pin 35 | RD4 — Digital I/O |
| Pin 36 | RD5 — Digital I/O |
| Pin 37 | RD6 — Digital I/O |
| Pin 38 | RD7 — Digital I/O |
| Pin 39 | RE0 — Digital I/O |
| Pin 40 | RE1 — Digital I/O |
| Pin 41 | RE2 — Digital I/O |
| Pin 42 | RE3 — Digital I/O |
| Pin 43 | RE4 — Digital I/O |
| Pin 44 | RE5 — Digital I/O |
| Pin 45 | EP — Exposed thermal pad - connect to ground |
Typical Applications
PIC24FJ48GA004-I/ML is suitable for 7 applications: Industrial Sensor Interface Module, USB Human Interface Device (HID), Capacitive Touch Control Panel, Low-Cost Brushless DC (BLDC) Motor Controller, Portable Medical Monitoring Device, Consumer Appliance HMI Controller, Automotive Body Control Module (BCM) Sub-Node.
Industrial Sensor Interface Module
The PIC24FJ48GA004-I/ML is well-suited to industrial 4-20 mA sensor conditioning and Modbus gateway designs. Its 13-channel 10-bit ADC at 500 ksps digitizes analog sensor inputs while the two UARTs handle RS-485 Modbus RTU/ASCII at 1 Mbps. The 16 MIPS core runs deterministic Modbus slave firmware with <1 ms response, and the 2.0-3.6 V supply operates from industrial 24 V rails via a simple buck regulator. NanoWatt sleep modes drop quiescent current below 1 uA between sensor polls - critical for loop-powered 4-20 mA field instruments where total current budget is 3.5 mA.
Recommended
USB Human Interface Device (HID)
The PIC24FJ48GA004-I/ML integrates a USB 2.0 full-speed device transceiver and Serial Interface Engine on-chip, eliminating external PHY and pull-up resistors on D+/D-. This makes it ideal for USB HID peripherals such as custom keyboards, mice, jog wheels, and control surfaces. The 48 KB Flash fits the Microchip USB HID stack (bootloader + HID class) with room for application code. 32 MHz CPU clock provides 16 MIPS throughput, sufficient for HID polling at 1 kHz with simultaneous LED animation and matrix scanning of up to 8x8 key grids.
Recommended
Capacitive Touch Control Panel
The PIC24FJ48GA004-I/ML features the Charge Time Measurement Unit (CTMU), a hardware peripheral that measures capacitance with sub-pF resolution using a constant-current source and ADC timing. This enables up to 35 touch buttons or a matrix touchpad without dedicated touch controller ICs - significant BOM savings for white goods, appliance front panels, and consumer HMI. The 48 KB Flash stores touch calibration tables and gesture recognition libraries. NanoWatt idle modes plus CTMU wake-on-touch deliver years of battery life in portable touch remotes.
Recommended
Low-Cost Brushless DC (BLDC) Motor Controller
The PIC24FJ48GA004-I/ML drives small 3-phase BLDC motors up to 200 W using the 16 MIPS core for field-oriented control (FOC) or trapezoidal commutation with back-EMF sensing. The 5 timer modules support PWM generation up to 16 kHz on 6 outputs for 3-phase inverter control, while the 32-bit timers capture Hall-sensor or encoder feedback at motor RPM. The 8 KB RAM holds FOC state variables and Park/Clarke transform buffers. 2.0-3.6 V operation suits battery-powered tools and small appliances.
Recommended
Portable Medical Monitoring Device
The PIC24FJ48GA004-I/ML suits battery-powered medical monitoring such as pulse oximeters, glucometers, and portable spirometers. Its 13-channel 10-bit ADC digitizes photodiode currents for SpO2 measurement with adequate resolution for heart-rate computation via AC component extraction. NanoWatt technology with RTC running at <1 uA from the internal 32 kHz oscillator extends coin-cell battery life to >2 years between replacements. The RTCC hardware block handles timestamping without CPU intervention, and 48 KB Flash stores weeks of trend data with simple ring-buffer compression.
Recommended
Consumer Appliance HMI Controller
The PIC24FJ48GA004-I/ML powers washing machine, dishwasher, and microwave oven front-panel HMIs with mixed display and input requirements. The two I2C buses drive character LCD or OLED displays while the CTMU handles capacitive touch buttons and rotary encoder inputs. UART connectivity links to the main appliance controller MCU for command exchange. The -40C to +85C industrial temperature range covers kitchen appliance environments, and 35 digital I/O drive LED indicators and segment displays directly. 48 KB Flash supports multi-language UI strings and complex state machines.
Recommended
Automotive Body Control Module (BCM) Sub-Node
The PIC24FJ48GA004-I/ML operates reliably in automotive body electronics sub-nodes such as seat controllers, mirror adjusters, and lighting drivers when designed per AEC-Q100 sourcing guidelines. Note that the standard -I grade is -40C to +85C; for under-hood or direct engine-bay applications, choose the -E grade (-40C to +125C) variant which shares the same 44-QFN footprint. CAN-style communication is implementable via the two UARTs paired with external CAN transceivers like MCP2551. The 48 KB Flash stores LIN stack and body-control firmware.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ48GA004-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GA004-I/ML | PIC24FJ32GA004-I/ML | PIC24FJ128GA004-I/ML | PIC24FJ48GA004-E/ML |
|---|---|---|---|---|---|
| Package | 44-QFN (8x8 mm) with EP | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 48 KB | 64 KB (+33%) | 32 KB (-33%) | 128 KB (+167%) | 48 KB (same) |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB |
| Max CPU Speed | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) | 32 MHz (16 MIPS) |
| USB Module | USB 2.0 FS on-chip | USB 2.0 FS on-chip | USB 2.0 FS on-chip | USB 2.0 FS on-chip | USB 2.0 FS on-chip |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (extended) |
| Approx. Unit Price (qty 100) | $4.07 | $4.30 | $3.65 | $5.10 | $4.95 |
| RoHS Status | Compliant | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- Optimum balance of Flash size and price in the PIC24FJ GA004 family (vs PIC24FJ64GA004-I/ML)
- 48 KB Flash enables USB device stacks without external memory (vs PIC24FJ32GA004-I/ML)
- Industrial -I temperature grade for harsh environments (vs PIC24FJ48GA004-I/PT)
- On-chip CTMU peripheral for capacitive touch sensing (vs PIC24FJ64GA002-I/ML)
Design Notes
The 44-QFN package requires soldering the exposed thermal pad (pin 45) to a continuous ground plane with thermal vias per IPC-7351 QFN land pattern guidelines. A typical land pattern uses 0.5 mm pitch pads with a 5.5 mm x 5.5 mm thermal pad and a 4x4 array of 0.3 mm via holes connecting to inner ground layers. Failure to solder the EP can cause thermal runaway at sustained 40 MHz operation, and may violate AEC-Q100 thermal stress requirements in automotive designs.
Place a 10 uF bulk decoupling capacitor and 100 nF ceramic capacitor within 3 mm of the VDD pin (pin 29). For USB applications, add a second 220 nF capacitor on the VUSB rail and ensure the internal 3.3 V USB voltage regulator is enabled via the DISVREG pin configuration (typically tied to VSS for internal regulator). Unused VDD/VSS pairs on PIC24FJ devices are present on internal power rings, but always include 100 nF at every external VDD pin per Microchip AN585.
Configure unused I/O pins as outputs driving low (or inputs with internal pull-ups enabled) to minimize quiescent current in nanoWatt sleep modes. Never leave pins floating - even CMOS inputs draw microamp-level currents due to mid-rail logic transitions that can wake the MCU unexpectedly. Always set the JTAGEN bit (CONFIG3) appropriately: enable JTAG only during debug builds, disable for production to free RB5/RB6/RB7 as general I/O.
The USB D+/D- lines (pins 27/28) require 90-ohm differential impedance routing matched within 150 mil length mismatch. Keep USB traces short (<25 mm) and isolated from switching nodes by a ground-fill moat. Add ESD protection diode array (e.g., USBLC6-2SC6) near the USB connector; the internal USB transceiver has limited ESD rating (~2 kV HBM) per the Microchip datasheet. Series ferrite bead on VUSB improves EMI immunity.
Compliance Information
RoHS compliant per Microchip product page. The -I grade (-40C to +85C) is not AEC-Q100 qualified; for AEC-Q100 qualified automotive, source from Microchip's automotive-grade portfolio. The -E grade variant (PIC24FJ48GA004-E/ML) supports -40C to +125C extended temperature.
