PIC24FJ32GA104
PIC24FJ32GA104 - 16-bit MCU, 32KB Flash, 44-TQFP | Microchip
The Microchip PIC24FJ32GA104 is a 16-bit low-power microcontroller from the PIC24F family featuring 32 KB of Flash program memory, 8 KB of RAM, and a 32 MHz maximum CPU clock delivering up to 16 MIPS performance. The device is housed in a 44-pin TQFP package (10x10 mm) and is targeted at general-purpose embedded applications requiring strong peripheral integration with low power consumption. According to the Microchip datasheet, the part includes 16-bit x 16-bit hardware multiply and 32-bit / 16-bit hardware divide engines in a single cycle, plus a C-compiler-optimized instruction set that simplifies code generation.
A microcontroller is a self-contained computing subsystem that integrates a CPU, non-volatile program memory, working RAM, and a rich mix of peripherals (timers, communication ports, ADCs, comparators, I/O) into a single IC. The PIC24FJ family sits within the broader hierarchy of microcontrollers -> 16-bit microcontrollers -> low-power microcontrollers -> nanoWatt XLP devices, manufactured using CMOS process technology. It belongs to the wider Microchip 8/16/32-bit MCU ecosystem (PIC, PIC24, dsPIC, PIC32) and ultimately falls under embedded processing -> semiconductors. The ultra-low-power nanoWatt XLP technology extends battery life by offering multiple sleep modes, deep sleep currents in the microamp range, and peripheral modules that operate independently of the CPU.
Key specifications include 32 KB Flash (11K x 24 words), 8 KB RAM, hardware single-cycle multiply and divide, an internal 8 MHz oscillator with PLL support, up to 16 MIPS throughput, and a peripheral lineup that typically includes multiple UART/SPI/I2C modules, 10-bit ADC, comparators, RTCC, and a charge time measurement unit (CTMU). Five 16-bit timers/counters and a wide operating voltage range of 2.0 V to 3.6 V with -40C to +85C industrial temperature range round out the feature set.
The architecture is a modified Harvard design with separate program and data paths, predictable interrupt response, and a fast context switch designed for deterministic real-time control. On-chip debugging via two hardware breakpoints and an ICD interface reduces development cost, while the integrated peripherals remove the need for many external components.
Typical applications include portable medical devices, sensor hubs, industrial control nodes, low-cost HMI panels, and battery-powered IoT edge nodes. The combination of nanoWatt XLP power savings, deterministic 16-bit performance, and standard 44-TQFP footprint makes it well suited to designs migrating from older 8-bit PIC microcontrollers that have outgrown their memory and peripheral budgets.
When designing with this part, ensure all VDD/VSS pairs are connected (a floating rail can prevent programming via ICSP), place the 0.1 uF decoupling capacitor within a few millimeters of each VDD pin, and reserve a 4.7 kohm pull-up on MCLR for reliable reset behavior. RTCC operation with a 32.768 kHz crystal requires selecting the appropriate secondary oscillator configuration in the configuration bits.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving purchasing and engineering teams a complete working reference for the PIC24FJ32GA104 in a 44-TQFP package.
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