DSPIC33FJ128GP804-H/PT - 16-bit DSC 128KB Flash 40MIPS | Microchip
MPN: DSPIC33FJ128GP804-H/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.2 | $6.20 |
| 10 | $5.58 | $55.80 |
| 100 | $4.9 | $490.00 |
| 500 | $4.35 | $2,175.00 |
| 1,000 | $3.85 | $3,850.00 |
DSPIC33FJ128GP804-H/PT Overview
A digital signal controller combines the computational architecture of a digital signal processor (DSP) with the peripheral set and ease of use of a microcontroller (MCU). Within the power-management hierarchy of embedded systems, the dsPIC33F family sits between general-purpose MCUs and dedicated DSPs, offering single-cycle MAC (multiply-accumulate) instructions, hardware divide, and DSP engine support while retaining standard MCU peripherals such as UART, SPI, I2C, and PWM modules.
Key features of this part include the 16-bit modified Harvard dsPIC33F core running up to 40 MIPS from a 3.0 V to 3.6 V supply, 128 KB (44 KB x 16) of self-programmable Flash, 16 KB of SRAM, and Peripheral Pin Select (PPS), which allows many digital peripherals to be remapped to any of 21 I/O ports as documented in the Microchip PIM information sheet (70325A).
Architecturally, the DSP engine can fetch two data operands concurrently while multiplying two W registers and accumulating, optionally saturating, the result in the same cycle, per the dsPIC33FJ128GP804 family datasheet (70292G). The advanced analog portfolio includes a high-speed 12-bit ADC and comparators, supporting motor control and power-conversion feedback loops without external front-end ICs.
Typical applications include automotive body and powertrain-adjacent modules, sensorless BLDC/PMSM motor control, digital power supplies, and industrial control panels that benefit from the AEC-Q100 qualification and extended -40C to +150C rating.
Designers should note that the -H temperature grade supports up to +150C ambient, but sustained high-frequency operation near the maximum grade reduces timing margin; consult the electrical specifications in the family datasheet for grade-specific limits.
This page synthesizes distributor pricing, drop-in alternatives, pin-compatibility data from Microchip PIM documentation, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ128GP804-H/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 DSPIC33FJ128GP804-H/PT (same form factor and footprint) — differing in Instruction Set, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ128GP804-I/PT
✅ Drop-In✓ In Stock
$4.46 / Unit
View Datasheet →DSPIC33FJ128GP804-E/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ128GP804T-H/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ64GP804-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
PIC24HJ128GP504-I/PT
✅ Drop-In📋 Reference alternative (not in catalog)
DSPIC33FJ128GP804-H/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F 16-bit |
| Max Clock Speed | 40 MHz |
| Performance | 40 MIPS |
| Program Memory | 128 KB Flash |
| SRAM | 16 KB |
| Supply Voltage | 3 V to 3.6 V |
| I/O Ports | 21 |
| Package Type | TQFP-44 (10 x 10 mm) |
| Operating Temperature | -40C to +150C (H grade) |
| Qualification | AEC-Q100 qualified (automotive) |
| Peripheral Pin Select | Yes (PPS) |
| ROM Type | Flash |
| Mounting Type | Surface Mount |
| Instruction Set | Single-cycle MAC, DSP engine |
| Life Cycle Stage | Active |
DSPIC33FJ128GP804-H/PT tqfp-44 (10 x 10 mm) Pin Configuration Guide
Pin configuration for DSPIC33FJ128GP804-H/PT (tqfp-44 (10 x 10 mm) 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 DSPIC33FJ128GP804-H/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ128GP804-H/PT is suitable for 6 applications: Automotive Body Electronics, Sensorless BLDC/PMSM Motor Control, Digital Power Supplies (SMPS/LLC), Industrial Sensing and Condition Monitoring, Embedded Audio and Signal Processing, HVAC and Appliance Control Boards.
Automotive Body Electronics
The AEC-Q100 qualification and -40C to +150C rating of the DSPIC33FJ128GP804-H/PT make it a strong fit for automotive body modules such as lighting controllers, window lift units, and HVAC actuators. Its 21 I/O ports with Peripheral Pin Select let one firmware image drive different harness variants by remapping LIN/UART and PWM outputs in software, cutting hardware variants. The 128 KB Flash accommodates protocol stacks and diagnostics (UDS-style routines) without external memory. Place it on a 3.3 V rail derived from the automotive 12 V battery via a qualified buck converter; the 40 MIPS core handles relay scheduling and current-sense ADC sampling at multi-kHz rates, leaving headroom for watchdog and communication tasks.
Recommended
Sensorless BLDC/PMSM Motor Control
The single-cycle MAC instruction and DSP engine of the dsPIC33FJ128GP804 accelerate field-oriented control and observer-based sensorless algorithms, where Clarke/Park transforms run every PWM cycle. The on-chip high-speed 12-bit ADC samples phase currents synchronized to the PWM center, and output-compare/PWM modules generate complementary six-step or SVPWM drive signals without extra ICs. With 40 MIPS of headroom, a 20 kHz current loop plus a slower speed loop fits comfortably in one chip. The 128 KB Flash holds field-weakening tables and startup routines. Verify the -H grade thermal budget in enclosed drives, since junction temperature near +150C reduces long-term reliability margins.
Digital Power Supplies (SMPS/LLC)
Digital control of LLC, buck, or PFC stages benefits from the dsPIC33FJ128GP804's deterministic 40 MIPS core and high-speed ADC: the compensation loop (Type-III or 3p3z) executes within a single PWM period using the DSP MAC engine. Peripheral Pin Select routes PWM outputs to the gate-driver interface of your choice, and the internal comparators support cycle-by-cycle current limiting. The 3.0 V to 3.6 V supply range matches standard controller rails. Using the -H grade (up to +150C) allows mounting the controller near hot power stages in enclosed adapters, though most designs keep it on the cool secondary side for timing-margin reasons.
Recommended
Industrial Sensing and Condition Monitoring
For vibration, pressure, or current monitoring nodes, the dsPIC33FJ128GP804 runs FFT and IIR filtering in-chip using its DSP instructions, transmitting results over UART/SPI/I2C remapped via PPS to suit existing backplanes. The 16 KB SRAM buffers multiple ADC sample windows, and the 12-bit converter resolves most industrial transducer signals directly. Operation over the extended -H temperature range suits panels near motors or furnaces. A typical chain connects the transducer front-end to AN pins, the controller sampling at 10-50 ksps, and an RS-485 transceiver on the remapped UART. The 128 KB Flash stores calibration coefficients and a small protocol stack concurrently.
Recommended
Embedded Audio and Signal Processing
The GP (general purpose) variant of the dsPIC33FJ family includes audio-oriented peripherals, and the DSP engine performs sample-rate conversion, filtering, and audio effect processing at 40 MIPS. The 128 KB Flash holds codec drivers plus multiple effect profiles; the 16 KB SRAM buffers delay lines for short reverbs and echo effects. Peripheral Pin Select maps I2S-compatible SPI or UART frames to convenient pins, easing layout between the controller and an external audio codec. For noise-critical designs, keep the analog supply (AVDD) filtered with an RC or small LDO from the 3.3 V rail to reduce digital switching noise coupling into ADC measurements.
Recommended
HVAC and Appliance Control Boards
Appliance controllers need motor drive, user-interface scanning, and communication in one low-cost device - exactly the dsPIC33FJ128GP804's balance. The 21 I/O ports handle capacitive or matrix keypads and LED/LCD drive lines while the PWM modules run a compressor or fan BLDC motor; the ADC samples thermistors and bus voltage for safety cutoffs. AEC-Q100 qualification of the -H grade provides extra robustness margin for high-temperature appliance cavities such as ovens or dryers. The 128 KB Flash supports OTA-style bootloaders and multiple language/menu tables. Use the PPS feature to keep one PCB serving several product SKUs with different connector pinouts.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ128GP804-H/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ128GP804-I/PT | DSPIC33FJ128GP804-E/PT | PIC24HJ128GP504-I/PT |
|---|---|---|---|---|
| Package | TQFP-44 (10x10 mm) | TQFP-44 - same | TQFP-44 - same | TQFP-44 - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 128 KB Flash | 128 KB Flash | 128 KB Flash | 128 KB Flash |
| SRAM | 16 KB | 16 KB | 16 KB | 16 KB |
| Max Clock / Performance | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS | 40 MHz / 40 MIPS |
| Operating Temperature | -40C to +150C | -40C to +85C | -40C to +125C | -40C to +85C |
| Supply Voltage | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V | 3 V to 3.6 V |
Key Differentiators
- +150C ambient rating with AEC-Q100 qualification (vs DSPIC33FJ128GP804-I/PT)
- DSP engine with single-cycle MAC (vs PIC24HJ128GP504-I/PT)
- Peripheral Pin Select flexibility (vs DSPIC33FJ128GP804-E/PT)
Design Notes
Supply the dsPIC33FJ128GP804-H/PT from a clean 3.3 V rail within the 3.0 V to 3.6 V range. Decouple every VDD pin with 0.1 uF ceramic capacitors placed within 2 mm of the pin, and filter AVDD through an RC (e.g., 10 ohm + 1 uF) or ferrite from the digital rail to keep ADC noise low. Add a 10 uF bulk capacitor near the device. On automotive boards, add transient suppression upstream (load-dump rated regulator) since the AEC-Q100 rating of the MCU does not protect the supply pin beyond its absolute maximums.
Estimated: the -H grade permits up to +150C ambient per Microchip USA and Arrow data, but self-heating must be added. At 40 MHz the device draws on the order of tens of milliamps (consult datasheet 70292G ICC tables); with theta_JA on the order of 40-50 C/W for a TQFP-44 on a standard 4-layer board, a 30 mA core current implies roughly 0.1 W and only a few degrees of rise - manageable, but verify with grade-specific ICC figures when operating above +125C, where derating curves may limit maximum frequency.
Peripheral Pin Select (PPS) is powerful but a classic source of bring-up failure: lock PPS register writes with the unlock sequence, and remember some pins are input-only or fixed-function (oscillator, PGC/PGD programming pins, analog inputs). Do not assign PGC/PGD pins to general I/O if in-circuit debugging is planned. Also confirm configuration words (FOSC, watchdog, boot write protection) at project start - incorrect oscillator settings are the most common cause of a 'dead' first board.
Compliance Information
AEC-Q100 automotive qualification confirmed via Arrow and Microchip USA product listings. RoHS/REACH/lead-free status not stated in the verified web data - confirm on the Microchip product page or distributor compliance sheets.
