DSPIC33FJ64GP804-I/PT - 16-bit DSC, 64KB Flash, 40 MIPS | Microchip
MPN: DSPIC33FJ64GP804-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $5.62 | $5.62 |
| 10 | $5.1 | $51.00 |
| 100 | $4.55 | $455.00 |
| 500 | $4.1 | $2,050.00 |
| 1,000 | $3.72 | $3,720.00 |
DSPIC33FJ64GP804-I/PT Overview
A digital signal controller is a hybrid of a microcontroller and a digital signal processor: it retains the peripherals, interrupt structure and ease of use of an MCU while adding DSP-style multiply-accumulate (MAC) instructions and addressing modes. In the power-management hierarchy, the dsPIC33FJ family sits between general-purpose 16-bit MCUs (PIC24) and dedicated DSPs, making it the default choice for embedded control loops that also need real-time math.
Key features include 8-channel DMA for moving data without CPU intervention, 7 timers, and 3 serial communication ports (UART, SPI, I2C). The GP (General Purpose) variant integrates advanced analog peripherals, making it suited to mixed signal-control designs. The industrial temperature grade (-I) covers -40C to +85C operation.
Architecturally, the dsPIC33FJ core executes an optimized C compiler-friendly instruction set with DSP engine support, single-cycle MAC, and two address generation units, achieving up to 40 MIPS from a 3.0 V to 3.6 V supply. In-circuit serial programming (ICSP) via MPLAB SNAP or similar tools enables field updates.
Typical applications include digital power supplies, motor control (BLDC/PMSM), and sensor signal processing where fast control loops meet mathematical intensity.
Design consideration: keep VDD within 3.0-3.6 V and place 0.1 uF decoupling caps at every VDD/VSS pair; use the 10x10 mm TQFP thermal pad-free layout with solid ground plane for analog performance.
This page synthesizes distributor pricing, pin-compatible family alternatives, and practical design notes not found in the manufacturer datasheet, as of 2026-09-27.
Drop-in alternatives for DSPIC33FJ64GP804-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 DSPIC33FJ64GP804-I/PT (same form factor and footprint) — differing in Operating Temperature, Package, Core Architecture, Program Memory, Program Memory Size.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ64GP804-H/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ64GP204T-I/PT
✅ Drop-In✓ In Stock
$4.1 / Unit
View Datasheet →DSPIC33FJ32GP204-I/PT
✅ Drop-In✓ In Stock
$3.78 / Unit
View Datasheet →DSPIC33FJ32MC304-E/PT
✅ Drop-In✓ In Stock
$4.45 / Unit
View Datasheet →DSPIC33FJ16GS504-50I/PT
✅ Drop-In✓ In Stock
$3.18 / Unit
View Datasheet →DSPIC33FJ64GP804-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F DSC |
| Max Clock Speed | 40 MHz (40 MIPS) |
| Flash Program Memory | 64 KB |
| SRAM | 16 KB |
| Supply Voltage | 3 V to 3.6 V |
| DMA Channels | 8 |
| Timers | 7 |
| Serial Ports | 3 (UART/SPI/I2C) |
| Operating Temperature | -40C to +85C (I grade) |
| Package | 44-TQFP (10x10 mm), 0.8 mm pitch |
| Mounting Type | Surface Mount |
| Programming Interface | ICSP (In-Circuit Serial Programming) |
| Lifecycle Status | ACTIVE |
| ROM Type | Flash |
| AEC-Q100 | Qualified (per Microchip USA, GP804 family) |
DSPIC33FJ64GP804-I/PT 44-tqfp (10x10 mm), 0.8 mm pitch Pin Configuration Guide
Pin configuration for DSPIC33FJ64GP804-I/PT (44-tqfp (10x10 mm), 0.8 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 DSPIC33FJ64GP804-I/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ64GP804-I/PT is suitable for 6 applications: Digital Power Supplies, Brushless Motor Control, Sensor Signal Processing, Audio Signal Processing, Industrial Automation Nodes, High-Temperature Embedded Control.
Digital Power Supplies
The DSPIC33FJ64GP804-I/PT fits digital power supply control because its 40 MIPS DSP engine executes the compensation loops and single-cycle MAC math needed for voltage-mode and current-mode control at tens of kHz switching frequencies. The 8-channel DMA streams ADC results into RAM without CPU stalls, keeping loop latency deterministic, while 7 timers generate the PWM carriers and auxiliary timing. Used as the main controller between the rectifier front end and the power stage, it replaces analog compensators with firmware, enabling adaptive gain scheduling and digital telemetry over its 3 serial ports (UART/SPI/I2C). The trade-off versus analog control is firmware complexity, but the 64 KB Flash comfortably holds control law, protection, and communication stacks together.
Recommended
Brushless Motor Control
The DSPIC33FJ64GP804-I/PT is explicitly marketed for motor control and digital signal processing, per Microchip distributor documentation. Field-oriented control of BLDC/PMSM motors demands the Clarke/Park transforms and PI loops that the dsPIC33F DSP engine executes in single-cycle MAC operations at 40 MIPS. The 7 timers support complementary PWM generation with dead-time, the DMA channels service ADC current-sense sampling without jitter, and the 3 serial ports interface to gate drivers, encoders, and host controllers. The industrial -40C to +85C rating covers typical drive environments, and 64 KB Flash leaves headroom for sensorless estimation algorithms. Design consideration: route current-sense analog inputs away from PWM switching nodes on the TQFP-44 footprint to preserve ADC accuracy.
Recommended
Sensor Signal Processing
The DSPIC33FJ64GP804-I/PT suits sensor signal processing chains where raw transducer data requires DSP-grade filtering before control decisions. Its DSP instructions (MAC, modulo and bit-reversed addressing) implement FIR/IIR filters efficiently, the integrated advanced analog front end digitizes sensor outputs, and 8 DMA channels move sample blocks to the 16 KB SRAM for windowing or FFT analysis. The GP variant's analog integration eliminates external signal-conditioning ICs in many designs, reducing BOM count. Because the part operates from a single 3.0-3.6 V rail at moderate power, it integrates directly into industrial sensor nodes, and the 3 serial ports (UART/SPI/I2C) stream processed results to SCADA or IoT gateways. The 64 KB Flash accommodates both the DSP pipeline and communication protocol stacks in one device.
Recommended
Audio Signal Processing
The DSPIC33FJ64GP804-I/PT performs embedded audio processing tasks such as filtering, mixing, and audio-effect algorithms thanks to its 40 MIPS DSP core with single-cycle multiply-accumulate. The 16 KB SRAM provides buffer space for block-based audio processing, and DMA channels sustain continuous sample streaming from codec interfaces over SPI or UART without CPU intervention. While not a dedicated audio DSP, its GP-series analog peripherals and deterministic interrupt latency make it a good fit for powered-speaker control, professional microphone preprocessing, and embedded audio telemetry where control and DSP coexist. The industrial temperature grade supports commercial-grade audio equipment reliability requirements, and 64 KB Flash holds both algorithm and user-interface firmware. Consider the GP204 variant if the algorithm set fits under 32 KB for cost reduction.
Recommended
Industrial Automation Nodes
The DSPIC33FJ64GP804-I/PT works well as an intelligent node controller in factory automation, where it bridges field sensors and actuators to higher-level controllers. Its 3 serial communication ports support Modbus RTU over UART, peripheral interconnect over SPI, and sensor buses over I2C simultaneously, while the 40 MIPS core runs control logic and protocol stacks concurrently. The industrial -40C to +85C temperature rating and active lifecycle status per Microchip data ensure long-term deployability, important for equipment with 10-year service expectations. 8 DMA channels and 7 timers handle deterministic I/O timing for sequencing and interlocks. The 44-pin TQFP with 0.8 mm pitch is hand-assemblable for pilot runs yet compatible with standard SMT lines, and 64 KB Flash supports field firmware updates via ICSP.
Recommended
High-Temperature Embedded Control
For designs that may see elevated ambient temperatures, the DSPIC33FJ64GP804 family offers an upgrade path: the DSPIC33FJ64GP804-H/PT is documented by Microchip USA as operating to +150C in the identical 44-terminal TQFP with 0.8 mm pitch. This makes the family suitable for under-hood, down-hole, and industrial oven-adjacent applications. The -I/PT version at -40C to +85C serves as the development and standard-production part; teams can qualify the -H variant later without PCB or firmware changes because the die and pinout are the same. Design consideration: at elevated temperature, derate maximum clock frequency and verify Flash retention and endurance specifications in the high-temp datasheet section before committing to the +150C operating point.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ64GP804-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ64GP804-H/PT | DSPIC33FJ64GP204T-I/PT | DSPIC33FJ32GP204-I/PT | DSPIC33FJ32MC304-E/PT | DSPIC33FJ16GS504-50I/PT |
|---|---|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Program Memory | 64 KB | 64 KB | 64 KB | 32 KB | 32 KB | 16 KB |
| Temperature Range | -40C to +85C | to +150C (H grade) | -40C to +85C | -40C to +85C | -40C to +125C (E grade) | -40C to +85C |
| Family / Peripheral Focus | GP (General Purpose, advanced analog) | GP, identical die | GP, reduced peripheral set | GP, reduced peripheral set | MC (motor control PWM) | GS (digital power) |
| Mounting / Pitch | Surface Mount, 0.8 mm | Surface Mount, 0.8 mm | Surface Mount, 0.8 mm | Surface Mount, 0.8 mm | Surface Mount, 0.8 mm | Surface Mount, 0.8 mm |
Key Differentiators
- Double the Flash of the closest same-pinout sibling (vs DSPIC33FJ32GP204-I/PT)
- GP-series advanced analog versus motor-control-specific peripherals (vs DSPIC33FJ32MC304-E/PT)
- Guaranteed high-temperature migration path (vs DSPIC33FJ64GP804-H/PT)
Design Notes
The DSPIC33FJ64GP804-I/PT requires a tightly regulated 3.0-3.6 V single supply (nominal 3.3 V). Place a 0.1 uF ceramic capacitor at every VDD/VSS pin pair, within 2 mm of the pins, plus one 4.7-10 uF bulk capacitor per device for DMA-burst and ADC transient currents. If the board is powered from 5 V, use an LDO or buck regulator with adequate load transient response - brown-out during Flash write or EEPROM operations can corrupt program memory. Enable the internal brown-out reset (BOR) in configuration bits as a safety net.
On the 10x10 mm TQFP-44 (0.8 mm pitch) footprint, dedicate a solid ground plane on layer 2 and connect every VSS pin directly with vias. Keep the analog inputs (advanced analog peripherals of the GP series) routed over clean ground, away from PWM and clock traces, and add small RC anti-alias filters (e.g., 1 k / 1 nF) at ADC inputs. Verify the captured land pattern against the Microchip datasheet mechanical drawing before release; several TQFP-44 footprints in CAD libraries have wrong courtyard sizes.
Three frequent integration mistakes with this part: (1) forgetting the ICSP programming header (MCLR, VDD, VSS, PGD, PGC) - reserve the two programming I/O pins and keep MCLR pulled up with 10 k and a programming tie point; (2) ignoring configuration-bit settings for oscillator and watchdog, which differ from PIC18 defaults and cause silent clock failures; (3) swapping the -I and -H temperature grades in purchasing - the -H variant is the correct choice above +85C. Always verify the peripheral pin-select mapping against your PCB net list after any family substitution.
Compliance Information
Package described as lead-free plastic per DigChip specifications; AEC-Q100 qualification noted for the GP804 family (Microchip USA, GP804T-H/PT listing). REACH, halogen-free, and conflict-minerals declarations not found in provided data.
