PIC24HJ128GP504-I/PT
PIC24HJ128GP504-I/PT - 16-bit MCU 128KB Flash 40MIPS | Microchip
The Microchip PIC24HJ128GP504-I/PT is a 16-bit microcontroller from the PIC24H family, featuring a 40 MIPS CPU core, 128 KB of Flash program memory, 8 KB of RAM, and a 44-pin TQFP package (10x10 mm). It operates from 3.0V to 3.6V and is industrial-grade rated from -40C to +85C, supporting 16-bit DSP instructions for high-speed numeric processing in embedded designs.
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory, and programmable I/O peripherals into one IC. The PIC24H family uses a 16-bit modified Harvard RISC architecture with 24-bit instructions, optimized for code density and deterministic real-time control. Within Microchip's portfolio, PIC24H sits between the 8-bit PIC18 family and the 32-bit PIC32MX/dsPIC33E families, delivering high-performance 16-bit DSP capability for motor control, digital power, and audio processing applications.
The PIC24HJ128GP504 integrates 128 KB Flash (43K x 24 words), 8 KB SRAM, 4 KB EEPROM emulation in Flash, two UART/SPI/I2C modules, two CAN modules, an Enhanced 16-bit Parallel Master Port, a 12-bit ADC with up to 13 input channels and 500 ksps conversion rate, and a 16-bit timer/capture/compare/PWM module set. The device is pin-compatible with the dsPIC33F family, allowing migration to a DSP-enhanced core without PCB changes.
Architecturally, the PIC24HJ128GP504 uses a 2-stage pipeline with a hardware multiplier and 16x16-bit single-cycle MAC, enabling efficient fixed-point DSP operations. Its DMA controller supports memory-to-peripheral transfers without CPU intervention, and its Peripheral Pin Select (PPS) feature allows flexible remapping of digital peripherals to I/O pins - a significant advantage over PIC24F parts that lack this capability.
Typical applications include industrial motor control (BLDC, PMSM, stepper), digital power conversion (PFC, LLC, full-bridge converters), automotive body and sensor interfaces, medical instrumentation, and high-reliability industrial automation. The combination of CAN, UART, SPI, I2C, and 12-bit ADC peripherals makes the part well suited as a system supervisor in distributed embedded networks.
When designing with the PIC24HJ128GP504, ensure the 3.3V supply rail is well decoupled with at least 10uF + 100nF local capacitance, and that any analog reference for the 12-bit ADC uses a low-noise LDO such as the MCP1700. Programming and debugging should use Microchip's MPLAB X IDE with a PICkit 4 or ICD 4 in-circuit debugger.
This page synthesizes distributor pricing, drop-in alternatives from Microchip's PIC24H family, and practical design notes not found in the manufacturer datasheet alone, helping engineers evaluate drop-in replacement and migration options for long-lifecycle designs.
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