DSPIC33FJ64MC804-H/PT - 16-bit DSC 64KB Flash Motor Control | Microchip
MPN: DSPIC33FJ64MC804-H/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.9 | $6.90 |
| 10 | $6.21 | $62.10 |
| 100 | $5.52 | $552.00 |
| 500 | $4.97 | $2,485.00 |
| 1,000 | $4.45 | $4,450.00 |
DSPIC33FJ64MC804-H/PT Overview
A Digital Signal Controller merges the computational power of a DSP with the peripheral set and ease of use of a microcontroller. Within the semiconductor hierarchy, the dsPIC33F family sits under the 16-bit MCU/DSC category, itself a branch of embedded processors, and is designed for control loops that demand both fast math and rich on-chip analog and PWM peripherals.
Key features include a modified Harvard 16-bit architecture with DSP engine (17-bit x 17-bit single-cycle MAC, 40-bit accumulators), Motor Control PWM with complementary outputs and dead-time insertion, a 10-bit ADC capable of 1.1 Msps operation, and connectivity peripherals such as CAN 2.0B, UART, SPI and I2C. DMA controllers offload data movement from the CPU, keeping loop timing deterministic.
Technically, the device operates from a 3.0V to 3.6V supply and executes from zero-wait-state Flash at 40 MIPS via an on-chip PLL from an external or internal oscillator. The H temperature grade extends operation to +150C, supporting motor drives mounted near hot electromechanical assemblies. Pin compatibility with the PIC24HJ family allows easy migration between general-purpose and motor-control firmware platforms.
Typical applications include brushless DC and PMSM motor control with sensorless field-oriented control, switched-mode power supplies and digital power conversion, and automotive/industrial sensing nodes requiring CAN networking at elevated ambient temperatures.
A key design consideration is power-supply sequencing and decoupling: place 0.1uF ceramics at every VDD/VSS pair and use the dedicated AVDD/AVSS pins with an RC filter for ADC accuracy.
This page synthesizes distributor pricing, drop-in alternatives, design notes, and FAQ content not found in the manufacturer datasheet. Pricing shown is a distributor estimate as of 2026-09-27; confirm live stock and pricing before ordering.
Drop-in alternatives for DSPIC33FJ64MC804-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 DSPIC33FJ64MC804-H/PT (same form factor and footprint) — differing in Operating Temperature, Package, Supply Voltage, RoHS Status, Family Compatibility.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ64MC804-I/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ32MC304-E/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$4.45 / Unit
View Datasheet →DSPIC33FJ32MC304-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.78 / Unit
View Datasheet →DSPIC33FJ64GP804-H/PT
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
DSPIC33FJ64GP804-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.72 / Unit
View Datasheet →DSPIC33FJ64MC804-H/PT Maximum Ratings & Electrical Characteristics
| Core | dsPIC33F 16-bit DSC |
| Instruction Rate | 40 MIPS |
| Program Memory | 64KB (22K x 24-bit) Flash |
| RAM Size | 16KB (8K x 16-bit) |
| Supply Voltage | 3.0 V to 3.6 V |
| Operating Temperature | -40C to +150C |
| Number of I/O | 35 |
| Package | 44-pin TQFP, 12 x 12 mm, 1 mm height |
| Mounting Type | Surface Mount |
| Motor Control PWM | Yes, complementary outputs with dead time |
| ADC | 10-bit, high-speed, up to 1.1 Msps |
| CAN | CAN 2.0B module |
| DMA | Yes |
| Serial Peripherals | UART, SPI, I2C |
| Packaging | Tray |
| RoHS Status | Compliant / Lead Free |
| Family Compatibility | Pin compatible with PIC24HJ family |
DSPIC33FJ64MC804-H/PT 44-pin tqfp, 12 x 12 mm, 1 mm height Pin Configuration Guide
Pin configuration for DSPIC33FJ64MC804-H/PT (44-pin tqfp, 12 x 12 mm, 1 mm height 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 DSPIC33FJ64MC804-H/PT.
Refer to the datasheet for full pin configuration.
Typical Applications
DSPIC33FJ64MC804-H/PT is suitable for 6 applications: BLDC/PMSM Motor Control (Sensorless FOC), Digital Power Conversion (SMPS/PFC), Automotive Body and Powertrain Nodes, Industrial Sensing and Data Acquisition, Embedded Networking Gateways, Audio Signal Processing and Effects.
BLDC/PMSM Motor Control (Sensorless FOC)
The DSPIC33FJ64MC804-H/PT fits sensorless field-oriented control because its 40 MIPS DSP engine executes single-cycle 17x17 MAC instructions for the Park and Clarke transforms, while the 10-bit ADC samples phase currents synchronized to the PWM period for minimal ripple in the current loop. The Motor Control PWM module generates complementary outputs with programmable dead time and fault shutdown, replacing external dead-time circuitry. Placed between the gate-driver input and the current-sense shunt amplifier, the controller closes current loops at several kHz bandwidth with deterministic DMA transfer of ADC results. The +150C H-grade rating allows mounting the controller inside drive housings where ambient temperatures exceed standard industrial limits, and the CAN bus links the drive to higher-level automation systems.
Recommended
Digital Power Conversion (SMPS/PFC)
In digitally controlled AC-DC and DC-DC converters, the DSPIC33FJ64MC804-H/PT provides the fast deterministic control needed for average-current-mode PFC and phase-shifted full-bridge topologies. The 40 MIPS core with DSP multiply-accumulate implements compensator equations in under one PWM period, while the high-speed ADC synchronized to the PWM trigger captures inductor current and output voltage at the optimal instant, avoiding switching-noise corruption. Complementary PWM outputs with dead-time insertion drive half-bridge stages directly through gate drivers. DMA streams sampled values into RAM without CPU intervention, keeping interrupt latency low. The +150C rating suits power supplies in enclosed industrial cabinets, and CAN/UART ports support digital telemetry, configuration and PMBus-like supervisory communication with a system host controller.
Recommended
Automotive Body and Powertrain Nodes
The H-grade temperature rating of -40C to +150C combined with the on-chip CAN 2.0B controller makes the DSPIC33FJ64MC804-H/PT suitable for automotive subsystems exposed to under-hood temperatures, such as electric water pumps, turbo actuators and cooling-fan drives. The Motor Control PWM drives the motor stage while the 10-bit ADC reads position sensors, NTC temperature networks and diagnostic voltage dividers. CAN 2.0B with DMA buffers supports OBD-II style messaging and fault logging without CPU overload. Note that this specific part is not advertised as AEC-Q100 qualified in available data, so verify the required qualification level for your program; the same-footprint I-grade or Microchip automotive variants may be required for production vehicle platforms, with this device serving prototyping and off-highway applications.
Recommended
Industrial Sensing and Data Acquisition
For industrial data-acquisition nodes, the DSPIC33FJ64MC804-H/PT combines a high-speed 10-bit ADC (up to 1.1 Msps class) with 64KB of Flash capable of storing calibration tables, compensation curves and logging code. The DMA controller moves conversion results to RAM in background, so the 16KB SRAM can buffer measurement records before transmission over UART, SPI or CAN. The I2C and SPI ports connect precision external ADCs (for 16/24-bit needs), digital sensors and EEPROM, while the 35 GPIO lines interface switches, relays and indicator LEDs. Operating at 3.3V with the +150C H grade, the node survives hot control cabinets. Firmware compensation routines exploit the DSP MAC engine for filtering, RMS calculation and sensor linearization in real time.
Recommended
Embedded Networking Gateways
The DSPIC33FJ64MC804-H/PT serves as a protocol-conversion node between CAN buses and serial industrial links. Its CAN 2.0B module with up to extended identifiers, paired with two UARTs, SPI and I2C, allows translation between vehicle-level CAN messaging and Modbus-style RS-485 or sensor-side I2C buses. DMA channels move frames between peripherals and RAM buffers so the 40 MIPS core spends its cycles on protocol state machines and CRC generation instead of byte shuffling. The 64KB Flash holds both protocol stacks with headroom for custom application logic, and 16KB SRAM provides message queues for burst traffic. With the -40C to +150C rating, the gateway can be installed directly inside motor housings or junction boxes near hot machinery, eliminating extra enclosures and cable runs.
Recommended
Audio Signal Processing and Effects
The dsPIC33F DSP engine of the DSPIC33FJ64MC804-H/PT, with its 17x17 MAC and dual 40-bit accumulators, executes fixed-point FIR and IIR filters, waveshapers and delay-line effects for compact audio products such as guitar pedals, active crossovers and intercom systems. The 10-bit ADC handles control inputs and low-fidelity capture, while the SPI port connects external high-quality audio codecs for the main signal path. The 40 MIPS instruction rate allows tens of biquad sections per sample period at 48 kHz, and the 16KB SRAM provides delay lines up to several hundred milliseconds for echo and reverb effects. 3.3V single-supply operation and the wide temperature range suit both studio hardware and vehicle-audio environments where cabinets heat up substantially.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ64MC804-H/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ64MC804-I/PT | DSPIC33FJ32MC304-E/PT | DSPIC33FJ64GP804-H/PT |
|---|---|---|---|---|
| Package | 44-pin TQFP (PT) | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory (Flash) | 64KB | 64KB | 32KB | 64KB |
| Performance | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Operating Temperature | -40C to +150C | -40C to +85C | -40C to +125C | -40C to +150C |
| Motor Control PWM | Yes | Yes | Yes | No (GP variant) |
| CAN 2.0B | Yes | Yes | Yes | Yes |
| DMA | Yes | Yes | Yes | Yes |
Key Differentiators
- Extended +150C temperature rating (vs DSPIC33FJ64MC804-I/PT)
- Double the program memory of the smallest pin-compatible MC variant (vs DSPIC33FJ32MC304-E/PT)
- Dedicated Motor Control PWM (vs DSPIC33FJ64GP804-H/PT)
Design Notes
Power the DSPIC33FJ64MC804-H/PT from a clean 3.0V to 3.6V rail. Place a 0.1uF ceramic capacitor at every VDD/VSS pair on the 44-pin TQFP, plus one 4.7uF to 10uF bulk capacitor near the device. The VCAP pin stabilizes the internal 1.8V core regulator and must have the datasheet-specified low-ESR capacitor connected - omitting it causes erratic operation or failure to boot. Power AVDD through an RC filter (for example 10 ohm + 0.1uF) from VDD to reduce ADC noise; do not share the analog supply trace with PWM gate-drive logic currents.
On the 12 x 12 mm TQFP layout, keep the PWM output traces short and pair them with their grounds to limit di/dt loop area toward the gate drivers. Route the analog sense lines (current-shunt and voltage-divider inputs) away from PWM and oscillator traces, and guard them with ground pour. Provide programming/debug access (ICSP: MCLR, PGD, PGC) with a 5-pin header even in production boards, since firmware updates and calibration are done in-circuit. The thermal path is through the leads; the H-grade +150C rating assumes proper derating of junction temperature at full load, so estimate dissipation from I*V numbers for your I/O loading.
The most frequent integration errors with this device: (1) forgetting the VCAP capacitor, which prevents the core regulator from starting; (2) driving the oscillator pins incorrectly - verify the configuration-fuse oscillator selection matches your crystal or use the internal FRC with PLL; (3) exceeding the absolute-maximum 3.6V supply when interfacing 5V peripherals - use level shifters or 3.3V-compatible parts; (4) misconfiguring the Motor Control PWM dead time, causing shoot-through in the power stage. Start from Microchip's reference designs and the family datasheet electrical specifications rather than deriving limits independently.
Compliance Information
Distributor listings (Onlinecomponents, DigiKey) mark the part RoHS compliant and lead free. Package described as lead-free plastic TQFP. AEC-Q100 qualification not stated in provided data.
