DSPIC33FJ128GP802-I/SP Microchip dsPIC33F 16-Bit Digital Signal Controller 40MIPS 128KB Flash General Purpose PWM ADC SPDIP-28

Product Overview

The DSPIC33FJ128GP802-I/SP is a Microchip general-purpose 16-bit Digital Signal Controller (DSC) in a 28-lead SPDIP narrow through-hole package, integrating 128KB Flash and 16KB SRAM in a breadboard-friendly, easy-to-replace traditional package. It is designed for 3.3V embedded applications requiring high algorithmic complexity and convenient prototyping and debugging. Based on the dsPIC33F core running at 40 MIPS, the DSPIC33FJ128GP802-I/SP efficiently handles digital signal processing, closed-loop control, and multi-protocol communication. On-chip peripherals include five 16-bit timers, four input captures, four output compares/PWM, a 10-bit ADC (up to 1.1 Msps, up to 13 analog input channels), and four analog comparators. Communication interfaces offer 2× UART, 1× SPI, and 1× I2C, all with Peripheral Pin Select (PPS) for flexible pin mapping. Operating from 3.0V to 3.6V with an industrial temperature range of -40°C to +85°C, in an SPDIP-28 package. The DSPIC33FJ128GP802-I/SP is ideal for industrial controller prototyping, educational platforms, repair spare parts, low-volume instrumentation, and any general-purpose real-time control system where through-hole convenience is valued. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

DSPIC33FJ128GP802-I/SP Core Features

Processor Core: 16-bit dsPIC33F core, 40 MIPS, DSP-enhanced instruction set. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

Program Memory: 128KB Flash. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

Data Memory: 16KB SRAM. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

Timers & Signal Processing: 5× 16-bit timers, 4× input capture, 4× output compare/PWM. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

Analog Front-End: 10-bit ADC (1.1 Msps, up to 13 channels), 4 analog comparators. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

Communication Interfaces: 2× UART, 1× SPI, 1× I2C, with Peripheral Pin Select (PPS). The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

System Management: Watchdog timer, BOR/POR, on-chip oscillator, hardware CRC. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

General Purpose I/O: Up to 21 programmable I/O pins. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

Power & Package: 3.0V – 3.6V, SPDIP-28 (0.300" wide), industrial -40°C to +85°C. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

DSPIC33FJ128GP802-I/SP Applications

Prototyping & Testing: Rapid breadboard setups, algorithm verification platforms, educational lab equipment. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

Repair & Spare Parts: Industrial controllers and instruments requiring easy-to-replace through-hole ICs. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

Low-Volume Instrumentation: Laboratory data loggers, portable test equipment, dedicated controllers. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

General Real-Time Control: Embedded systems that prioritize soldering and debugging convenience with large memory requirements. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

Key Advantages

SPDIP Through-Hole Package, Plug and Play: The 28-lead 0.300" wide through-hole package directly fits standard IC sockets or breadboards, enabling rapid prototyping without soldering. Chip replacement is effortless, dramatically reducing debug and repair time. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

Massive Memory for Unrestricted Algorithms: 128KB Flash and 16KB SRAM are exceptionally generous in a through-hole package, comfortably hosting complex DSP algorithms, dual protocol stacks, and real-time data logging, with ample headroom for feature upgrades. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

Dual UART + PPS for Flexible Communication: Two independent UARTs can simultaneously handle debug output and fieldbus communication, with PPS flexibly assigning pins to simplify wiring adjustments during prototyping. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

Enhanced Analog Front-End: 13-channel 10-bit ADC paired with four analog comparators provides a complete single-chip solution for multi-sensor acquisition and fast fault detection. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

3.3V Single-Supply Operation: Level-compatible with mainstream MCUs, DSPs, and digital isolators, eliminating extra level shifters, reducing BOM cost, and simplifying power design. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

Mature Development Toolchain: Free MPLAB X IDE and XC16 compiler, combined with MCC, DSP libraries, and peripheral libraries, enable rapid progress from prototype verification to production. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

Long-Term Availability: A mature dsPIC33F family product with stable long-term supply commitment. The DSPIC33FJ128GP802-I/SP is a versatile DSC for prototyping. DSPIC33FJ128GP802-I/SP offers excellent performance in through-hole form factor.

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FAQ

1. What is the difference between the SP (SPDIP) and SO (SOIC) packages? How do I choose?
   
   • SP is a 28-lead SPDIP through-hole package (0.300" wide) that directly fits standard IC sockets or breadboards, usable without soldering—ideal for prototyping, testing, and repair replacement.
   • SO is a 28-lead SOIC surface-mount package that is smaller and better suited for automated production, though hand soldering requires some skill.
   • If your project is in the early prototyping phase, or requires frequent chip swaps and easy hand soldering and repair, the SP package is the most convenient choice. Once you move to mass production, you can seamlessly switch to the SO package version.
2. Can the SPDIP package be used directly on a breadboard?
   Absolutely. The SPDIP-28 has a standard 0.100" pin pitch, fully compatible with breadboards and universal IC sockets, making it ideal for rapid circuit prototyping and algorithm verification—a perfect package for learning and prototype development.
3. What can the 128KB Flash and 16KB SRAM do in a through-hole package?
   
   • Run complex DSP algorithms such as FIR/IIR filters, FFT, and closed-loop control, while providing ample space for dual protocol stacks (e.g., Modbus plus proprietary) and real-time data logging.
   • The 16KB SRAM can buffer extensive ADC sampling data, support software data logging, complex state machines, or a lightweight RTOS without external RAM.
4. Does it have DMA? How does it differ from non-A variants?
   
   • This model does not include a DMA controller; all data transfers are handled by the CPU. If DMA-assisted data movement is required, choose an enhanced model with the “A” suffix.
   • Compared to the DSPIC33FJ64GP802, this device doubles Flash from 64KB to 128KB and SRAM from 8KB to 16KB, making it better suited for complex algorithm applications needing larger memory.
5. What is the accuracy and speed of the 13-channel 10-bit ADC? Can it meet industrial sensing needs?
   
   • Sampling rate up to 1.1 Msps enables fast scanning of multiple analog signals, suitable for temperature, pressure, and current transmitter signal acquisition.
   • 10-bit resolution combined with DSP oversampling and digital filtering techniques can effectively improve equivalent resolution, meeting most industrial measurement accuracy requirements.
6. Can it be used to control motors?
   
   • The four output compares can generate general-purpose PWM signals suitable for driving brushed DC motors or stepper motors (with external drivers).
   • It lacks hardware complementary outputs and dead-time insertion, making it unsuitable for directly driving 3-phase BLDC/PMSM inverter bridges. For high-performance motor control, consider the dsPIC33F MC series.
7. What communication interfaces does it have? Can it perform multi-protocol conversion simultaneously?
   
   • It provides 2× UART, 1× SPI, and 1× I2C, all with flexible PPS mapping.
   • For example, one UART can serve as a debug console, another can connect to RS-485 or a Bluetooth module, SPI to an external ADC/DAC, and I2C to sensors or EEPROM, easily achieving multi-protocol conversion.
8. Won't the SPDIP package be too large for compact designs?
   If your final product has strict space constraints, you can switch to the SOIC or QFN package versions after completing prototype verification. The unique value of the SPDIP package lies in its extreme convenience for development, debugging, and ease of repair and replacement, making it especially popular in laboratories, education, and industrial spare parts markets.
9. Does it require an external crystal and reset chip?
   
   • Built-in high-accuracy on-chip oscillator and PLL enable stable operation without an external crystal, saving PCB space and BOM cost.
   • Integrated Power-on Reset (POR) and Brown-out Reset (BOR) ensure reliable start-up without an external reset IC.
10. What projects and stages is the DSPIC33FJ128GP802-I/SP suitable for?
    It is especially well-suited for projects in the prototyping, algorithm verification, or educational experiment stages, as well as for industrial controller spare parts that require easy manual replacement and repair. Its through-hole package is plug-and-play with extremely high debugging efficiency, and once verified, you can seamlessly switch to the surface-mount version of the same model for mass production. The 128KB Flash and 16KB SRAM provide generous resource headroom for complex applications.