DSPIC33FJ128GP202-I/SP - 16-bit DSC, 128KB Flash, 40 MIPS | Microchip
MPN: DSPIC33FJ128GP202-I/SP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.79 | $5.79 |
| 10 | $5.21 | $52.10 |
| 100 | $4.42 | $442.00 |
| 500 | $3.8 | $1,900.00 |
| 1,000 | $3.42 | $3,420.00 |
DSPIC33FJ128GP202-I/SP Overview
A Digital Signal Controller combines the control peripherals of a microcontroller with the mathematical acceleration of a DSP core. Within the power-management hierarchy of embedded systems, a DSC sits between general-purpose MCUs and dedicated DSPs: it executes C code and bit-banged control logic like an MCU while performing single-cycle MAC and division operations needed for digital filtering, motor control loops, and power conversion algorithms.
Key differentiating features include 8-channel DMA for moving ADC data without CPU intervention, a 10-channel 10-bit/12-bit ADC with high-speed conversion modes, multiple UART/SPI/I2C serial ports remappable through the Peripheral Pin Select (PPS) system, and 7 general-purpose timers including input capture and output compare channels. The 40 MIPS core runs from 3.0V to 3.6V supply.
The GP (General Purpose) variant pairs DSP engine instructions (single-cycle MAC, barrel shifter, dual operand fetch) with 21 general-purpose I/O pins, making it well suited to sensor processing and signal conditioning chains. In-circuit serial programming (ICSP) via PGEC/PGED pairs supports field updates.
Typical applications include digital power supplies, motor control, audio signal processing, and sensor-conditioning systems where 16-bit arithmetic and fast interrupt response matter. The SPDIP package suits prototyping, education, and through-hole industrial boards.
Design tip: all VDD/VSS and AVDD/AVSS pins must be decoupled, and PGEC/PGED pairs must be kept paired for ICSP.
This page adds distributor availability, drop-in alternatives, and practical design notes beyond the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ128GP202-I/SP — 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 DSPIC33FJ128GP202-I/SP (same form factor and footprint) — differing in Core Architecture, Package, Operating Temperature, Maximum CPU Speed, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ128GP202-H/SP
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ64GP202-I/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32GP302-I/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128GP202-I/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64GP202-I/SP
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP64MC202-I/SP
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.1 / Unit
View Datasheet →DSPIC33FJ128GP802-I/SP
✅ Drop-In✓ In Stock
$4.95 / Unit
View Datasheet →DSPIC33FJ128GP202-I/SP Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F DSC |
| Instruction Speed | 40 MIPS |
| Program Memory | 128 KB (128K x 8) Flash |
| Data RAM | 8 KB (8K x 8) |
| Supply Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +85C |
| Package | 28-SPDIP |
| Mounting Type | Through-Hole |
| GPIO Pins | 21 |
| ADC Resolution | 10-bit / 12-bit |
| ADC Channels | 10 |
| DMA Channels | 8 |
| Timers | 7 |
| Serial Interfaces | 2 x UART, 2 x SPI, 2 x I2C (via PPS) |
| Programming Interface | ICSP (PGEC/PGED pairs) |
| DSP Engine | Single-cycle MAC, barrel shifter, dual operand fetch |
| Peripheral Pin Select | Yes (PPS remapping) |
DSPIC33FJ128GP202-I/SP 28-spdip Pin Configuration Guide
Pin configuration for DSPIC33FJ128GP202-I/SP (28-spdip package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for DSPIC33FJ128GP202-I/SP.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ128GP202-I/SP is suitable for 6 applications: Digital Power Supplies, Motor Control, Audio Signal Processing, Sensor Conditioning and IoT Nodes, Education and Prototyping, Industrial Control and HMI Panels.
Digital Power Supplies
The DSPIC33FJ128GP202-I/SP fits digital power conversion because its 40 MIPS core closes voltage-mode and average-current-mode loops at tens of kHz with deterministic interrupt latency. The 10-channel ADC can sample output voltage, current, and temperature, and the 8 DMA channels stream sampled data to RAM without CPU overhead, keeping the control loop jitter low. Placed in the feedback path of a buck or LLC stage, it executes compensator algorithms with single-cycle MAC operations, replacing discrete analog compensation with firmware that can be retuned in the field. The trade-off versus a dedicated analog controller is added firmware development effort and the need for careful ADC trigger timing.
Recommended
Motor Control
In sensorless BLDC and PMSM control, the DSPIC33FJ128GP202-I/SP provides the compute and sampling resources needed for field-oriented control at typical 10-20 kHz loop rates. The 10-bit/12-bit ADC with multiple sample-and-hold circuits captures phase currents and bus voltage simultaneously, while input capture channels measure back-EMF zero crossings for commutation. Its DSP engine executes Clarke/Park transforms with single-cycle MAC instructions, and the Peripheral Pin Select system routes PWM outputs and capture inputs to optimal pins on the 21 GPIO. For designs requiring hardware dead-time insertion and complementary PWM, the pin-compatible dsPIC33EP MC-series is the recommended successor in the same footprint.
Recommended
Audio Signal Processing
The GP variant of the dsPIC33FJ128GP202 handles moderate-rate audio processing - sample rates up to 48 kHz with simple filters, AGC, or tone control - using its single-cycle MAC DSP engine. With two UARTs and two SPI ports remappable via PPS, it connects to codecs and DACs such as Microchip codec parts over I2S-mapped SPI or directly drives Sigma-Delta DACs. The 128KB Flash holds firmware plus coefficient tables, while the 8KB SRAM buffers delay lines and filter states. Developers should budget MIPS carefully: a 64-tap FIR at 48 kHz stereo consumes a substantial share of the 40 MIPS budget, so aggressive filtering may require the larger GP804 parts.
Recommended
Sensor Conditioning and IoT Nodes
For battery-powered sensor nodes, the DSPIC33FJ128GP202-I/SP combines a low-overhead control core with DSP capability for filtering noisy sensor data in real time. Its 10-channel ADC digitizes analog sensors directly, DMA moves samples off the CPU, and the I2C/SPI interfaces (remapped via PPS across the 21 GPIO) attach environmental sensors and radios. The -40C to +85C industrial range suits outdoor and factory deployments. Power design consideration: the 40 MIPS F-family core is not the lowest-power option; for energy-harvesting designs verify sleep and idle currents in the datasheet and consider the newer low-power dsPIC33 families if budget permits.
Recommended
Education and Prototyping
The 28-pin SPDIP through-hole package makes the DSPIC33FJ128GP202-I/SP a natural teaching part: it plugs into solderless breadboards and wire-wrap prototyping boards, and survives repeated insertion cycles. The device is supported by the Explorer 16/32 Development Board through Processor Plug-In Modules (PIMs), per Microchip's product page, and programs via low-cost PICkit-class ICSP tools through any PGEC/PGED pair. Students can implement digital filters, PID controllers, and UART protocols with MPLAB X and the XC16 compiler. Compared to QFN-packaged alternatives on the same silicon, the SPDIP version trades board area for incomparable ease of rework, which is decisive in classroom and lab settings.
Recommended
Industrial Control and HMI Panels
In industrial panels, the DSPIC33FJ128GP202-I/SP serves as a real-time front-end that debounces switches, scans keypads, drives segment LEDs, and pre-processes analog feedback while a host PLC or SBC handles higher-level logic. Its industrial -40C to +85C rating, 3.0V-3.6V supply tolerance, and flash self-programming for field updates fit DIN-rail and panel-mounted electronics. The UART/I2C/SPI ports bridge to RS-485 transceivers and isolated digital-input chips. Through-hole SPDIP also simplifies low-volume, hand-assembled control boards common in retrofit equipment. For robust RS-485 links, pair with a fault-protected transceiver and keep the PGEC/PGED programming pads accessible for servicing.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ128GP202-I/SP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ128GP202-H/SP | DSPIC33FJ64GP202-I/SP | DSPIC33EP128GP202-I/SP | DSPIC33FJ128GP802-I/SP |
|---|---|---|---|---|---|
| Package | 28-SPDIP | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same | 28-SPDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash | 128 KB | 128 KB | 64 KB | 128 KB | 128 KB |
| SRAM | 8 KB | 8 KB | 8 KB | 16 KB (enhanced family) | 8 KB |
| Speed | 40 MIPS | reduced grade (-H) | 40 MIPS | up to 70 MIPS (EP) | 40 MIPS |
| Temperature Range | -40C to +85C (I) | reduced (-H grade) | -40C to +85C | -40C to +85C | -40C to +85C |
| DMA Channels | 8 | 8 | 8 | enhanced DMA (EP) | 8 |
| Family / Firmware | dsPIC33F GP - existing hex runs unchanged | dsPIC33F GP - compatible | dsPIC33F GP - compatible (check size) | dsPIC33EP - recompile required | dsPIC33F GP80x - recompile recommended |
Key Differentiators
- Full 128KB Flash in the family (vs DSPIC33FJ64GP202-I/SP)
- Industrial temperature grade guaranteed (vs DSPIC33FJ128GP202-H/SP)
- Same-socket path to newer silicon (vs DSPIC33EP128GP202-I/SP)
Design Notes
Provide a clean 3.0-3.6V rail with 0.1uF ceramic decoupling at every VDD pin, and separate filtered AVDD for ADC accuracy. The dsPIC33F family requires a 10uF low-ESR capacitor (plus 0.1uF ceramic) on the internal regulator output pin; undersizing this capacitor is the most frequent cause of brown-out resets and erratic execution. All VDD and VSS pins must be connected during programming and operation per Microchip's programming specification.
Route ICSP (MCLR, PGECx, PGEDx) to a 5-pin header even on production boards - field firmware updates via PICkit-class tools then need no desoldering. Keep each PGEC/PGED pair together: the debugger requires a matched pair (e.g., PGEC2 with PGED2), and mixing pins from different pairs prevents connection, as noted in third-party NSDSP programming documentation. Keep oscillator traces short and guard them from PWM returns.
Do not assume Peripheral Pin Select defaults: UART, SPI, PWM, and capture pins must be explicitly locked (with the unlock sequence) before use, or peripherals stay unconnected to the 21 GPIO. Also remember PPS output pins are write-once-locked on some family members. Finally, ADC results left-justified versus right-justified differ by mode - mismatched alignment silently truncates resolution and shows up as quantized readings.
Compliance Information
Lifecycle stage ACTIVE per distributor data. Exact REACH/halogen status should be confirmed via Microchip environmental compliance search for this full MPN.
