Part Number: PIC24HJ64GP506T-E/PT

Manufacturer: Microchip Technology

Description: IC MCU 16BIT 64KB FLASH 64TQFP

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The PIC24HJ64GP506T-E/PT is a potent 16-bit microcontroller from Microchip Technology’s PIC® 24H family. An in-depth review of this microcontroller’s capabilities, technical specs, and useful applications is what this comprehensive guide seeks to deliver. This manual will assist you in comprehending and making the most of the PIC24HJ64GP506T-E/PT’s capabilities, regardless of your level of expertise in developing embedded systems.

Overview of PIC24HJ64GP506T-E/PT and Key Features

A member of the PIC® 24H family of microcontrollers is the PIC24HJ64GP506T-E/PT. It is a high-performance, 16-bit RISC (Reduced Instruction Set Computing) microcontroller built for demanding applications. The number “64” in the part number denotes the amount of flash memory that will be used to store the program code, which is 64KB (22K x 24). The “506” denotes the particular configuration of this particular microcontroller model.

Key Features of PIC24HJ64GP506T-E/PT

  • High Performance: The PIC24HJ64GP506T-E/PT can handle complex tasks fast thanks to its 40 MIPS (Million Instructions Per Second) clock speed.
  • Flash Memory: The 64KB of Flash memory on the microcontroller is used to store the program code, which is rewritable both during development and during operation.
  • SRAM (Static Random-Access Memory) is built-in and available for temporary data storage while programs are running.
  • Peripherals: The PIC24HJ64GP506T-E/PT has a variety of integrated peripherals, including timers, PWM (Pulse-Width Modulation), ADC (Analog-to-Digital Converter), DAC (Digital-to-Analog Converter), UART (Universal Asynchronous Receiver/Transmitter), SPI (Serial Peripheral Interface), and I2C (Inter-Integrated Circuit).
  • Interrupt Handling: The microcontroller is equipped with effective interrupt-handling techniques that enable it to react swiftly to urgent situations and real-time occurrences.
  • Power Management: To improve system dependability and power efficiency, it has power-saving modes and features such as a Watchdog Timer and Brown-Out Reset.

PIC24HJ64GP506T-E/PT’s support for a variety of communication protocols makes it possible for it to seamlessly integrate with external devices and communication networks.

The microcontroller is housed in a 64-Terminal Quad Flat Package (TQFP), which offers a small footprint ideal for applications with limited space.

Comparison with other microcontrollers in the PIC® 24H series

Each 16-bit microcontroller in the PIC® 24H series has unique features and abilities designed to meet the needs of various applications. The following elements should be taken into account when contrasting the PIC24HJ64GP506T-E/PT to other PIC® 24H series members:

  • Clock Speed: Different series members may have different clock speeds, which might impact processing performance as a whole.
  • Memory Size: The complexity and size of programs that can be run might vary depending on the sizes of the program memory (Flash) and data memory (SRAM).
  • Peripherals: varying microcontroller variations may have varying peripheral configurations and availability, which may affect how well-suited they are to particular jobs.
  • Pin Count and Package: The number of pins available in various packages affects how many external components the microcontroller can connect with.

These elements should be carefully taken into account by developers in order to assist them choose the best PIC® 24H microcontroller for their unique application requirements.

Memory Organization and Program Flow

Detailed Explanation of Flash Memory Organization

The PIC24HJ64GP506T-E/PT microcontroller stores the program code in Flash memory. Because it is non-volatile, the data is kept safe even when the power is turned off. The Flash memory is broken into smaller segments or rows on each of the memory pages that make up the memory. Each segment’s size is determined by the particular microcontroller version.

The Boot Flash and User Flash regions of the Flash memory are commonly separated when programming the PIC24HJ64GP506T-E/PT. The User Flash region is utilized for the user’s application code, whereas the Boot Flash region is often designated for bootloader code and setup data.

The Flash memory can be reprogrammed during development using MPLAB® X IDE and a programmer/debugger, allowing developers to update the microcontroller’s firmware as needed.

Understanding the Structure of the Program Memory and Data Memory

The firmware or program code for the microcontroller is stored in the program memory (Flash). It is the location of the instructions that are stored for the microcontroller to carry out. Typically written in C or Assembly, the program code is translated into machine code (a hex file) before being loaded into the Flash memory.

  • Data Memory: The data that the microcontroller needs to run programs is kept in the data memory. SRAM (Static Random-Access Memory) and SFR (Special Function Register) space are two more divisions that can be made.
  • SRAM: SRAM is employed to store variables, arrays, and other types of information that the program manipulates while it is running.
  • SFR Space: SFRs are memory-mapped registers that manage a number of functions of the microcontroller, including control registers, status flags, and peripheral configuration settings.

How to Handle Variables, Constants, and Arrays Efficiently

To handle variables, constants, and arrays efficiently, consider the following practices:

  • Use Local Variables: Whenever possible, use local variables inside of functions. By doing so, memory utilization is decreased and any conflicts with global variables are avoided.
  • Data Types to Optimise: Depending on the precision and range of the variable, choose the appropriate data type. Memory can be saved by using smaller data types whenever possible.
  • recurring variables: For constants that don’t change while the program is running, use the term “const.” The compiler can then optimize how much memory is used.
  • Arrays: To prevent memory wastage, allocate arrays that are the right size. For tiny arrays, use the ‘uint8_t’ (unsigned 8-bit integer) or ‘uint16_t’ (unsigned 16-bit integer) data types to save memory.
  • Allocating Memory Dynamically: ‘malloc()’ and other dynamic memory allocation functions in C should be used with caution as they have the potential to cause memory leaks and fragmentation. Dynamic allocation should only be used when absolutely necessary.

Best Practices for Coding Organization and Memory Resource Utilization

Use these recommended practices to efficiently arrange code and manage memory resources:

  • Programming in modules: Divide your code into more manageable, modular functions with clear objectives. This encourages the reuse and upkeep of code.
  • Employing function prototypes To enable the compiler to validate function calls and guarantee appropriate parameter passing, declare function prototypes at the beginning of your code.
  • Enhance Libraries: Only include the specific functions required for your project when using external libraries. Code size and memory use might both rise as a result of unused library functions.
  • Code Improvement: Activate compiler optimizations to create code that is efficient. Utilize the MPLAB® X IDE’s optimization options to cut down on code size and speed up execution.
  • Memory Sections: Memory sections are used to specify the location in memory of particular data or code. This enables you to increase performance by moving crucial code to faster memory areas.
  • Cut down on global variables: Use global variables solely for necessary information. Excessive global variables may cause name conflicts and memory waste.
  • Don’t Use Hard-Coded Values: For magic numbers and configurable values, use constants or macros. This improves the readability of the code and makes later setting modifications simpler.

You can efficiently manage memory resources, and create effective and dependable programs for the PIC24HJ64GP506T-E/PT microcontroller by adhering to these recommendations and optimizing your code.


In conclusion, the PIC24HJ64GP506T-E/PT microcontroller offers a diverse range of features for various embedded systems applications. With this comprehensive guide, you’ll master its capabilities and be ready to design projects confidently. Get the PIC24HJ64GP506T-E/PT from ICRFQ, a leading electronic components distributor in China, and unlock your potential in embedded systems innovation today!

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