DSPIC33EP128GP504-I/PT - 16-bit 70MIPS DSC 128KB | Microchip
MPN: DSPIC33EP128GP504-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.12 | $6.12 |
| 10 | $5.55 | $55.50 |
| 25 | $5.3 | $132.50 |
| 100 | $4.86 | $486.00 |
| 1,000 | $4.28 | $4,280.00 |
DSPIC33EP128GP504-I/PT Overview
A Digital Signal Controller combines the control peripherals of a microcontroller (MCU) with the math throughput of a digital signal processor (DSP). Within the power-management hierarchy of embedded systems, a DSC sits above a basic MCU: it executes DSP-class multiply-accumulate instructions while retaining deterministic interrupt handling, making the dsPIC33E family a mainstay for digital power conversion, motor control, and sensing applications.
Key features of the GP504 variant include a 16-bit dsPIC33E RISC core clocked up to 70 MIPS (from data: Mouser lists 60 MHz operation, equivalent to 70 MIPS via PLL), 16 KB of SRAM, an ADC subsystem noted by Microchip for superior analog performance, CAN 2.0B communication, a Charge Time Measurement Unit (CTMU), and a Peripheral Trigger Generator (PTG) for autonomous, hardware-timed peripheral coordination. Industrial temperature support (-40C to +85C, indicated by the -I suffix) and an extended 125C family option are available.
Architecturally, the dsPIC33EP core uses a modified Harvard pipeline with DSP multiply-accumulate, divide, and barrel shifter instructions, plus two address generation units. Code-efficient instruction set and 24-bit instruction word width allow dense program storage in the 128 KB FLASH, which is self-programmable for field firmware updates.
Typical applications include digital power supplies (switching converter control), brushless DC and PMSM motor drives, sensor fusion and industrial sensing nodes, and general-purpose embedded control where CAN networking and fast ADC sampling are required. The PTG offloads trigger sequencing from the CPU, freeing MIPS for control algorithms.
Design consideration: power the device from a clean 3.3V rail (the -I/PT variant is a 3.3V part per datasheets.com data) and decouple all VDD/VDDCORE pins per the Microchip datasheet layout guidance; EEPROM emulation and flash self-write require careful sector planning.
This page synthesizes distributor pricing, same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for DSPIC33EP128GP504-I/PT — 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 DSPIC33EP128GP504-I/PT (same form factor and footprint) — differing in Operating Temperature, Package, Core Architecture, Packaging, RAM Size.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33EP256GP504-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.68 / Unit
View Datasheet →DSPIC33EP64GP504-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.95 / Unit
View Datasheet →DSPIC33EP32GP504-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128GP504-H/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33EP128GM304T-I/PT
✅ Drop-In✓ In Stock
$3.95 / Unit
View Datasheet →DSPIC33EP128GM306-E/PT
✅ Drop-In✓ In Stock
$6.15 / Unit
View Datasheet →DSPIC33EP128GP504-I/PT Maximum Ratings & Electrical Characteristics
| Core Processor | dsPIC33E (16-bit RISC) |
| Core Size | 16-bit |
| Maximum Performance | 70 MIPS |
| Core Frequency | 60 MHz |
| Program Memory Size | 128 KB (43K x 24) FLASH |
| RAM Size | 16 KB |
| Supply Voltage | 3.3 V |
| Package | 44-TQFP (10 x 10 mm), 0.5 mm pitch |
| Mounting Type | Surface Mount |
| Operating Temperature | -40C to +85C (I grade) |
| Connectivity | CAN, UART, SPI, I2C |
| Analog Features | ADC, CTMU (Charge Time Measurement Unit) |
| Special Peripherals | Peripheral Trigger Generator (PTG), High-Speed PWM |
| Packaging | Tray |
| Lead Free | Yes |
| Series | dsPIC 33EP |
DSPIC33EP128GP504-I/PT 44-tqfp (10 x 10 mm), 0.5 mm pitch Pin Configuration Guide
Pin configuration for DSPIC33EP128GP504-I/PT (44-tqfp (10 x 10 mm), 0.5 mm pitch 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 DSPIC33EP128GP504-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33EP128GP504-I/PT is suitable for 6 applications: Digital Power Supply Control, BLDC / PMSM Motor Drives, Industrial Sensing and CTMU Measurement, CAN Networking Nodes, Portable and Embedded Instrumentation, Audio and Signal Processing Front Ends.
Digital Power Supply Control
The DSPIC33EP128GP504-I/PT is a strong fit for digitally controlled switching converters because its 70 MIPS DSP core closes voltage and current loops fast enough for 100-500 kHz power stages. The high-speed PWM peripherals and the Peripheral Trigger Generator (PTG) allow ADC sampling to be synchronized to PWM events in hardware, minimizing control-loop latency without CPU overhead. Placed as the main controller, it runs PID or 2P2Z compensators in firmware with deterministic interrupt response. Unlike analog-only controllers, firmware control enables soft-start shaping, adaptive dead-time, and field updates across CAN.
Recommended
BLDC / PMSM Motor Drives
For brushless DC and permanent-magnet synchronous motor control, the DSPIC33EP128GP504-I/PT provides the 70 MIPS throughput needed for field-oriented control (FOC) with Clarke/Park transforms executed using DSP multiply-accumulate instructions. Its 44-pin TQFP exposes enough PWM and ADC channels for three-phase bridge control plus current-sense sampling synchronized via the PTG. The GP family's CAN interface supports networked drive nodes in industrial automation. Designers should verify PWM allocation against the pin-multiplexing table, since the GM (motor control) variant offers an alternative peripheral emphasis for PWM-heavy designs.
Recommended
Industrial Sensing and CTMU Measurement
The Charge Time Measurement Unit (CTMU) on the DSPIC33EP128GP504-I/PT enables precise capacitive and time-domain measurements - useful for capacitive touch, level sensing, and resistive sensor excitation - without a dedicated analog front end. Combined with the on-chip ADC and 16 KB SRAM for buffering, the part serves as a compact industrial sensing node with local 70 MIPS signal processing and CAN/UART uplink. Microchip highlights the family's superior ADC performance for exactly this class of high-end general-purpose applications, and the -I grade covers -40C to +85C factory environments.
Recommended
CAN Networking Nodes
With its on-chip ECAN module, the DSPIC33EP128GP504-I/PT acts as an intelligent CAN 2.0B node for industrial buses, building automation, and vehicle-adjacent systems at up to 1 Mbps when paired with a transceiver. The 70 MIPS core leaves ample headroom to run the application plus a lightweight protocol stack (CANopen or J1939-style messaging), while 128 KB FLASH stores protocol tables and local control logic. Hardware message filtering reduces CPU interrupt load. For fleets of nodes, the same-package 64/256 KB variants allow BOM scaling without PCB respins.
Recommended
Portable and Embedded Instrumentation
In handheld meters, test fixtures, and embedded instruments, the DSPIC33EP128GP504-I/PT merges measurement and display/user-interface control in one 3.3 V, 44-pin device. The ADC plus CTMU cover analog front-end tasks, UART/SPI/I2C drive displays and external memory, and DSP instructions accelerate filtering (IIR/FIR) of acquired data. The 10x10 mm TQFP keeps boards compact while remaining hand-solderable and rework-friendly with 0.5 mm pitch. The Peripheral Trigger Generator offloads timed acquisition sequences, letting firmware focus on calibration math and protocol handling at up to 70 MIPS.
Recommended
Audio and Signal Processing Front Ends
The dsPIC33E core's single-cycle MAC, dual address generators, and 70 MIPS throughput support real-time FIR/IIR filtering, tone generation, and basic spectral processing. While not a dedicated audio DSP, the DSPIC33EP128GP504-I/PT handles speech-band signal conditioning, active filter control, and codec interfacing over SPI/I2C in compact designs. The 16 KB SRAM buffers multiple audio frames, and hardware PTG timing keeps sampling clocks stable. Designers needing higher-end audio CODECs typically pair the DSC with an external codec IC rather than relying on internal peripherals for conversion.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33EP128GP504-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33EP256GP504-I/PT | DSPIC33EP64GP504-I/PT | DSPIC33EP128GM304T-I/PT | DSPIC33EP128GM306-E/PT |
|---|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10) - same | 44-TQFP (10x10) - same | 44-TQFP - same | TQFP - same family footprint |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Performance | 70 MIPS / 60 MHz | 70 MIPS / 60 MHz | 70 MIPS / 60 MHz | 70 MIPS | 70 MIPS |
| FLASH Memory | 128 KB (43K x 24) | 256 KB | 64 KB | 128 KB | 128 KB |
| Peripheral Emphasis | General purpose: ADC, CTMU, PTG, CAN | General purpose, same peripherals | General purpose, same peripherals | Motor control PWM emphasis | Motor control emphasis, extended temp option |
| Temperature Grade | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | Extended (up to 125C, E grade) |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
Key Differentiators
- Peripheral Trigger Generator (PTG) for autonomous sequencing (vs DSPIC33EP128GM304T-I/PT)
- Memory headroom scalability on one PCB (vs DSPIC33EP64GP504-I/PT)
- Extended-temperature escape path (vs DSPIC33EP128GM306-E/PT)
Design Notes
Power the DSPIC33EP128GP504-I/PT from a regulated 3.3 V rail with individual 0.1 uF ceramic decoupling capacitors at every VDD pin pair, placed within 2-3 mm of the pins, plus bulk 4.7-10 uF near the supply entry. The dsPIC33E core also requires the VDDCORE network per the datasheet. Add a supervisor/brown-out IC (Microchip MCP131/809 class) because flash write operations are vulnerable to undervoltage - corrupted configuration words can brick the device during field updates.
The 44-TQFP (10x10 mm) has 0.5 mm pitch leads - use a standard QFP-44 footprint with non-solder-mask-defined pads. Route the oscillator (external crystal up to the PLL input per datasheet) with short, guarded traces away from PWM and CAN lines. For motor-control layouts, keep shunt-amplifier sense traces Kelvin-routed to the ADC pins and reserve RGx remappable pins for PWM early in layout, since peripheral pin selection constrains routing late in the design.
Three frequent issues with dsPIC33EP designs: (1) forgetting the two external decoupling/bias components on VDDCORE/regulator pins, causing erratic resets; (2) misconfiguring the PLL - the 70 MIPS target requires correct FRC/crystal input and PLL prescale/postscale values, so validate with the datasheet clock tree and Microchip's clock calculation tools; (3) ignoring EEPROM emulation wear - the 128 KB flash has finite erase cycles, so implement wear leveling and never write configuration regions from application code during brown-out-prone events.
Use the CTMU and ADC inputs with short analog traces referenced to a quiet analog ground island; series 100R-1k resistors at ADC pins help isolate switching noise from the digital domain. For CAN, apply standard termination (two 60R/120R splits per the CAN 2.0B network design in Microchip's ECAN application notes) and route CANH/CANL as a tightly coupled pair. The Peripheral Trigger Generator's deterministic timing is only as good as your interrupt latency budget - keep ISRs short and measure with the PTG as a free timer source.
Compliance Information
Lead-free per findic.us listing ('LEAD FREE, PLASTIC, TQFP-44'). RoHS/reach statuses to be confirmed on the official Microchip product page compliance section.
