PIC24FJ32GA104-I/ML - 16-Bit 32KB Flash MCU, 44-QFN | Microchip
MPN: PIC24FJ32GA104-I/ML ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.1 | $31.00 |
| 100 | $2.78 | $278.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.18 | $2,180.00 |
PIC24FJ32GA104-I/ML Overview
A 16-bit microcontroller (MCU) is a single-chip computer with a 16-bit data path, instruction word, and ALU, sitting in the hierarchy: microcontroller -> embedded controller -> semiconductor. The PIC24F family uses a Modified Harvard architecture with 16-bit instructions and 24-bit instruction words, optimized for C compiler efficiency and signal processing. This positions it between 8-bit MCUs (PIC16, AVR) and 32-bit MCUs (PIC32, ARM Cortex-M), offering a balance of compute throughput, peripheral integration, and low power consumption.
Key features include up to 16 MIPS performance, single-cycle execution, 16 x 16 hardware multiply, 32-bit / 16-bit hardware divider, a C-compiler-optimized instruction set, and the nanoWatt XLP sleep modes that allow standby currents in the microamp range. The 44-QFN package integrates peripherals such as multiple UART/SPI/I2C interfaces, 12-bit ADC, real-time clock, and up to 33 digital I/O pins.
Typical applications include portable medical devices, low-power IoT sensor nodes, industrial control with LCD display, battery-powered data loggers, and consumer products requiring extended battery life. The wide 2.0V to 3.6V operating range supports direct Li-ion battery connection with on-chip regulation.
When designing with this part, allocate PCB thermal relief to the exposed pad (EP) on the 44-QFN for proper ground connectivity and heat dissipation. Use Microchip's MPLAB X IDE with the XC16 compiler and consider the Explorer 16/32 development board for prototyping with compatible Processor Plug-In Modules.
This page synthesizes distributor pricing, MPLAB tool compatibility, drop-in alternative PIC24FJ parts, and practical PCB layout notes not found in the standalone datasheet.
Drop-in alternatives for PIC24FJ32GA104-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 PIC24FJ32GA104-I/ML (same form factor and footprint) — differing in Package, ADC, I/O Pins, Core Architecture, Operating Temperature Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC24FJ64GA104-I/ML
✅ Drop-In✓ In Stock
$2.05 / Unit
View Datasheet →PIC24FJ32GA104-I/PT
✅ Drop-In✓ In Stock
$2.72 / Unit
View Datasheet →PIC24FJ32GA104T-I/ML
✅ Drop-In✓ In Stock
$3.1 / Unit
View Datasheet →PIC24FJ32GA104-E/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ64GA104-I/PT
✅ Drop-In✓ In Stock
$3.97 / Unit
View Datasheet →dsPIC33FJ16GP101-I/ML
✅ Drop-In📋 Reference alternative (not in catalog)
PIC24FJ32GA104-I/ML Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC24 (16-bit Modified Harvard) |
| Family | PIC24FJ64GA104 Family (nanoWatt XLP) |
| Program Memory (Flash) | 32 KB (11K x 24 words) |
| Data Memory (RAM) | 8 KB |
| Maximum CPU Speed | 32 MHz (16 MIPS) |
| Operating Voltage | 2.0 V to 3.6 V |
| I/O Pins | Up to 33 |
| Package | 44-pin QFN (8x8 mm) with exposed pad |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40C to +85C (Industrial, 'I' suffix) |
| ADC | 12-bit |
| Communication Interfaces | UART, SPI, I2C |
| Instruction Set | C-compiler optimized, 16-bit instructions, 24-bit instruction words |
| Hardware Multiply / Divide | 16x16 single-cycle multiply, 32/16-bit divider |
| RoHS Status | Compliant |
| MSL Level | 3 (per JEDEC J-STD-020) |
PIC24FJ32GA104-I/ML Pin Configuration
| Pin 1 | RA0 — I/O port A bit 0 / analog input AN0 |
| Pin 2 | RA1 — I/O port A bit 1 / analog input AN1 |
| Pin 3 | RA2 — I/O port A bit 2 / analog input AN2 |
| Pin 4 | RA3 — I/O port A bit 3 / analog input AN3 |
| Pin 5 | RA4 — I/O port A bit 4 |
| Pin 6 | RA5 — I/O port A bit 5 |
| Pin 7 | RA6 — I/O port A bit 6 / OSC2 |
| Pin 8 | RA7 — I/O port A bit 7 / OSC1 |
| Pin 9 | RB0 — I/O port B bit 0 / AN8 |
| Pin 10 | RB1 — I/O port B bit 1 / AN9 |
| Pin 11 | RB2 — I/O port B bit 2 / AN10 |
| Pin 12 | VSS — Ground reference |
| Pin 13 | VDD — Positive supply voltage (2.0 V to 3.6 V) |
| Pin 14 | RB3 — I/O port B bit 3 / AN11 |
| Pin 15 | RB4 — I/O port B bit 4 / AN12 |
| Pin 16 | RB5 — I/O port B bit 5 / AN13 |
| Pin 17 | RB6 — I/O port B bit 6 / AN14 / ICSPCLK |
| Pin 18 | RB7 — I/O port B bit 7 / AN15 / ICSPDAT |
| Pin 19 | RC0 — I/O port C bit 0 |
| Pin 20 | RC1 — I/O port C bit 1 |
| Pin 21 | RC2 — I/O port C bit 2 |
| Pin 22 | RC3 — I/O port C bit 3 |
| Pin 23 | RC4 — I/O port C bit 4 |
| Pin 24 | RC5 — I/O port C bit 5 |
| Pin 25 | RC6 — I/O port C bit 6 |
| Pin 26 | RC7 — I/O port C bit 7 |
| Pin 27 | RD0 — I/O port D bit 0 |
| Pin 28 | RD1 — I/O port D bit 1 |
| Pin 29 | RD2 — I/O port D bit 2 |
| Pin 30 | RD3 — I/O port D bit 3 |
| Pin 31 | RD4 — I/O port D bit 4 |
| Pin 32 | RD5 — I/O port D bit 5 |
| Pin 33 | RD6 — I/O port D bit 6 |
| Pin 34 | RD7 — I/O port D bit 7 |
| Pin 35 | RE0 — I/O port E bit 0 |
| Pin 36 | RE1 — I/O port E bit 1 |
| Pin 37 | RE2 — I/O port E bit 2 |
| Pin 38 | RE3 — I/O port E bit 3 |
| Pin 39 | RE4 — I/O port E bit 4 |
| Pin 40 | RE5 — I/O port E bit 5 |
| Pin 41 | RE6 — I/O port E bit 6 |
| Pin 42 | RE7 — I/O port E bit 7 |
| Pin 43 | MCLR — Master Clear reset input (active low) |
| Pin 44 | AVSS — Analog ground reference |
| Pin EP | EP — Exposed thermal pad - must be soldered to PCB ground plane |
Typical Applications
PIC24FJ32GA104-I/ML is suitable for 6 applications: Portable Medical Devices, Low-Power IoT Sensor Nodes, Industrial Control with LCD Display, Battery-Powered Data Loggers, Consumer Appliance Control, Educational and Prototyping Platforms.
Portable Medical Devices
The PIC24FJ32GA104-I/ML fits portable medical applications because of its nanoWatt XLP technology delivering microamp-range sleep currents, enabling multi-year battery life on a single coin cell. With 32 KB Flash and 8 KB RAM it can run sensor-fusion algorithms, blood-pressure or pulse-oximetry front-end control, and BLE link management via UART. The 2.0-3.6 V operating range allows direct Li-ion or 2xAA battery connection without external LDO regulation.
Recommended
Low-Power IoT Sensor Nodes
The PIC24FJ32GA104-I/ML is ideal for IoT sensor hubs because its nanoWatt XLP sleep currents below 1 uA allow the node to wake only on sensor events, transmitting over UART-attached BLE or Sub-GHz radios. At 16 MIPS the core can execute sensor-fusion and AES-128 encryption in real time. The 33 I/O pins support multiple I2C/SPI sensor breakouts and the 12-bit ADC handles analog sensors directly without external signal conditioning.
Recommended
Industrial Control with LCD Display
The PIC24FJ32GA104-I/ML suits industrial HMI controllers because it integrates segmented LCD driver support and enough I/O to scan keypads while driving displays. Industrial temperature grade (-40C to +85C) supports factory floor deployment. The hardware 16x16 multiplier and 32/16 divider accelerate PID loop math at sub-millisecond periods, while 8 KB RAM holds control variables and LCD buffer memory without external expansion.
Recommended
Battery-Powered Data Loggers
The PIC24FJ32GA104-I/ML is well suited to battery data loggers because the XLP sleep modes combined with the real-time clock calendar enable sample-and-store operation at intervals of seconds to hours while consuming microamp average current. The 32 KB Flash can hold thousands of timestamped samples with compression, and the 12-bit ADC digitizes sensor data at rates up to 200 ksps for transient event capture. SPI interface supports external Flash for extended logging capacity.
Recommended
Consumer Appliance Control
The PIC24FJ32GA104-I/ML fits cost-sensitive consumer appliances such as coffee makers, washing machines, and air purifiers because it integrates UART, SPI, I2C, and PWM peripherals in a single 44-QFN at sub-$3 price points. The 16 MIPS performance handles user-interface state machines and motor-control loops. RoHS compliance and the wide 2.0-3.6 V range simplify global deployment with universal power supply designs.
Recommended
Educational and Prototyping Platforms
The PIC24FJ32GA104-I/ML is widely used in university curricula and hobbyist prototyping because of its mature MPLAB X IDE ecosystem, free XC16 compiler, and the Explorer 16/32 development board with matching Processor Plug-In Modules (PIMs). 32 KB Flash and 8 KB RAM provide adequate headroom for teaching RTOS concepts, peripheral drivers, and signal processing. C-compiler-optimized instruction set accelerates the learning curve from assembly to C development.
Recommended
Recommended Products Summary
Engineering reference data for PIC24FJ32GA104-I/ML — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC24FJ64GA104-I/ML | PIC24FJ32GA104-I/PT | PIC24FJ32GA104T-I/ML | PIC24FJ32GA104-E/ML | dsPIC33FJ16GP101-I/ML |
|---|---|---|---|---|---|---|
| Package | 44-QFN (8x8 mm) | 44-QFN (8x8 mm) - same | 44-TQFP - different package | 44-QFN (8x8 mm) - same | 44-QFN (8x8 mm) - same | 44-QFN - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 32 KB | 64 KB | 32 KB | 32 KB | 32 KB | 16 KB |
| RAM | 8 KB | 8 KB | 8 KB | 8 KB | 8 KB | 1 KB |
| CPU Speed | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 32 MHz / 16 MIPS | 40 MHz / 20 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 | 3.0 V to 3.6 V |
| Temperature Grade | -40C to +85C (Industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (Extended) | -40C to +85C |
| Core Type | PIC24 (16-bit MCU) | PIC24 (16-bit MCU) | PIC24 (16-bit MCU) | PIC24 (16-bit MCU) | PIC24 (16-bit MCU) | dsPIC33 (16-bit DSP) |
Key Differentiators
- Doubled Flash memory in same QFN package (vs PIC24FJ64GA104-I/ML)
- Lower-power sleep current than dsPIC33 DSP variants (vs dsPIC33FJ16GP101-I/ML)
- Industrial vs Extended temperature options on same silicon (vs PIC24FJ32GA104-E/ML)
Design Notes
The 44-QFN exposed thermal pad (EP) MUST be soldered to the PCB ground plane for both electrical reference and thermal dissipation. Per Microchip QFN layout guidelines, place a 9x9 array of 0.3 mm thermal vias on a 1.2 mm pitch directly under the EP, with the vias tented or filled to prevent solder wicking. Without proper EP soldering, the part may exhibit erratic operation and reduced thermal performance.
Place a 10 uF bulk capacitor and a 0.1 uF decoupling capacitor as close as possible to the VDD pin (pin 13). Add a separate 0.1 uF cap on the AVDD pin (if used for ADC reference) to reduce digital switching noise coupling into analog measurements. The PIC24FJ32GA104 power-on reset threshold is approximately 1.8 V; ensure VDD ramp time is <50 ms to guarantee clean startup per the datasheet BOR specification.
Do not leave the MCLR pin (pin 43) floating - tie it to VDD through a 10 kohm pull-up resistor. For ICSP programming, add a 10 kohm series resistor and a diode to allow in-circuit debug without interfering with normal operation. Also note that the 'I' suffix denotes industrial temperature grade (-40C to +85C); for AEC-Q100 automotive applications choose a PIC24FJxxGA1xx-Q1 variant instead.
Compliance Information
RoHS and REACH compliant per Microchip product page. Industrial temperature grade (-40C to +85C). AEC-Q100 not qualified - choose PIC24FJxxGA1xx-Q1 variant for automotive.
