DSPIC33FJ64MC204T-I/PT - 16-bit 40 MIPS DSC 64KB Flash | Microchip
MPN: DSPIC33FJ64MC204T-I/PT ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $6.39 | $6.39 |
| 10 | $5.79 | $57.90 |
| 25 | $5.32 | $133.00 |
| 100 | $4.86 | $486.00 |
| 1,000 | $4.31 | $4,310.00 |
DSPIC33FJ64MC204T-I/PT Overview
A digital signal controller combines the computational throughput of a digital signal processor with the deterministic interrupt architecture and peripherals of a microcontroller. In the embedded hierarchy, the DSC sits between a general-purpose MCU and a full DSP, making it the preferred choice for closed-loop control loops that must execute fast, repetitive math such as PID regulators, field-oriented motor control, and digital power conversion. The dsPIC33F family is pin compatible with the PIC24HJ family and shares a high degree of compatibility with the dsPIC30F family, enabling seamless migration paths across PIC24F, dsPIC30F and dsPIC33F devices.
Key features include the 16-bit modified Harvard architecture core running at 40 MIPS from an internal PLL, 64 KB of self-programmable FLASH with 1000 erase/write cycles, a DMA controller that offloads data movement between peripherals and RAM, and a 6-channel Motor Control PWM with dead-time insertion. A high-speed 10-bit/12-bit ADC with multiple sample-and-hold circuits synchronized to the PWM enables precise current sensing in motor drive loops. Communication is covered by dual UART, SPI, and I2C modules.
Technically, the DSP engine provides single-cycle MAC, 40-bit wide accumulators, and hardware modulo and bit-reversed addressing, while the interrupt controller supports up to 63 interrupt vectors with programmable priority levels. The internal fast RC oscillator with PLL reduces external BOM cost, though a primary crystal remains an option for precision timing.
Typical applications include three-phase BLDC/PMSM motor drives, solar and battery inverters, digital SMPS and power-factor-correction stages, and industrial sensor signal conditioning.
When designing, budget the 3.3 V rail carefully and add a 10 uF plus 0.1 uF decoupling pair on each VDD pin; the VCAP pin requires its specified bulk capacitor for the internal regulator to start reliably.
This page synthesizes distributor pricing, same-footprint drop-in alternatives, pinout data, and practical design notes not consolidated in the manufacturer datasheet.
Drop-in alternatives for DSPIC33FJ64MC204T-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 DSPIC33FJ64MC204T-I/PT (same form factor and footprint) — differing in Core Architecture, Package, RoHS Status, Supply Voltage, Operating Temperature.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
DSPIC33FJ64MC204-I/PT
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$4.75 / Unit
View Datasheet →DSPIC33FJ32MC304-E/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
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View Datasheet →DSPIC33FJ64GP204T-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
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View Datasheet →DSPIC33FJ32GP204-I/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
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View Datasheet →DSPIC33FJ32GP204-E/PT
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$3.15 / Unit
View Datasheet →DSPIC33FJ64MC204T-I/PT Maximum Ratings & Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F modified Harvard |
| Max CPU Speed | 40 MIPS (40 MHz) |
| Program Memory | 64 KB (64K x 8) FLASH |
| DMA Controller | Yes |
| Supply Voltage | 3.0 V to 3.6 V |
| I/O Ports | 21 |
| Package | 44-TQFP (10 x 10 mm), PT suffix |
| Mounting Type | Surface Mount |
| ROM Type | Flash |
| Motor Control PWM | Yes (dedicated MCPWM module) |
| Operating Temperature | -40C to +85C (I grade) |
| Series | dsPIC33FJ64MC |
| Family Compatibility | Pin compatible with PIC24HJ; highly compatible with dsPIC30F |
| Packing | Tape and Reel (T suffix) |
| RoHS Status | Lead-free, RoHS compliant |
| Lifecycle Status | Active |
| Communication Interfaces | UART, SPI, I2C |
DSPIC33FJ64MC204T-I/PT Pin Configuration
| Pin 1 | MCLR — Master clear reset input, active low |
| Pin 2 | RB0/AN0/VREF+/CN2 — Port B I/O, ADC channel 0, positive voltage reference |
| Pin 3 | RB1/AN1/VREF-/CN3 — Port B I/O, ADC channel 1, negative voltage reference |
| Pin 4 | RB2/AN2/SS1/CN4 — Port B I/O, ADC channel 2, SPI slave select |
| Pin 5 | RB3/AN3/INDX/CN5 — Port B I/O, ADC channel 3, encoder index input |
| Pin 6 | RB4/AN4/QEA/IC7/CN6 — Port B I/O, ADC channel 4, encoder QEA, capture 7 |
| Pin 7 | RB5/AN5/QEB/IC8/CN7 — Port B I/O, ADC channel 5, encoder QEB, capture 8 |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKI/CN30/RA2 — Oscillator crystal input or external clock input |
| Pin 10 | OSC2/CLKO/CN29/RC15 — Oscillator crystal output or clock output |
| Pin 11 | SOSCI/CN1/RC13 — Secondary oscillator input, Timer1 clock |
| Pin 12 | SOSCO/CN0/RC14 — Secondary oscillator output, Timer1 clock |
| Pin 13 | VDD — Positive supply, 3.0 V to 3.6 V |
| Pin 14 | RB6/PGEC — Port B I/O, programming clock |
| Pin 15 | RB7/PGED — Port B I/O, programming data |
| Pin 16 | VDD — Positive supply, 3.0 V to 3.6 V |
| Pin 17 | RC1/T2CK/IC1 — Port C I/O, Timer2 clock, input capture 1 |
| Pin 18 | RC2/T3CK/IC2 — Port C I/O, Timer3 clock, input capture 2 |
| Pin 19 | RC3/T5CK/IC3 — Port C I/O, Timer5 clock, input capture 3 |
| Pin 20 | VCAP — Internal regulator bulk capacitor connection |
| Pin 21 | RC4/SDI1/SCL — Port C I/O, SPI data in, I2C clock |
| Pin 22 | RC5/SDO1/SDA — Port C I/O, SPI data out, I2C data |
| Pin 23 | VSS — Ground reference |
| Pin 24 | RC6/U1RX/SDI2 — Port C I/O, UART1 receive, SPI2 data in |
| Pin 25 | RC7/U1TX/SDO2 — Port C I/O, UART1 transmit, SPI2 data out |
| Pin 26 | RC8/SCK2 — Port C I/O, SPI2 clock |
| Pin 27 | RC9/SS2 — Port C I/O, SPI2 slave select |
| Pin 28 | VDD — Positive supply, 3.0 V to 3.6 V |
| Pin 29 | AVDD — Analog supply for ADC |
| Pin 30 | AVSS — Analog ground for ADC |
| Pin 31 | RB8/IC7 — Port B I/O, input capture 7 |
| Pin 32 | RB9/IC8 — Port B I/O, input capture 8 |
| Pin 33 | RB10/OC4 — Port B I/O, output compare 4 |
| Pin 34 | RB11/OC5 — Port B I/O, output compare 5 |
| Pin 35 | RB12/PWM1L — Port B I/O, Motor PWM 1 low-side output |
| Pin 36 | RB13/PWM1H — Port B I/O, Motor PWM 1 high-side output |
| Pin 37 | RB14/PWM2L — Port B I/O, Motor PWM 2 low-side output |
| Pin 38 | RB15/PWM2H — Port B I/O, Motor PWM 2 high-side output |
| Pin 39 | RA0/T1CK — Port A I/O, Timer1 external clock |
| Pin 40 | RA1/OCFA — Port A I/O, PWM fault A input |
| Pin 41 | RA2/U2RX — Port A I/O, UART2 receive |
| Pin 42 | RA3/RTCC — Port A I/O, real-time clock calibration |
| Pin 43 | RA4/OCFB — Port A I/O, PWM fault B input |
| Pin 44 | VSS — Ground reference |
Typical Applications
DSPIC33FJ64MC204T-I/PT is suitable for 6 applications: Three-Phase BLDC/PMSM Motor Drives, Digital Switch-Mode Power Supplies and PFC, Industrial Automation and Sensor Conditioning, Automotive and E-Mobility Auxiliary Control, Battery Management and Portable Power Systems, Audio Signal Processing and Effects.
Three-Phase BLDC/PMSM Motor Drives
The DSPIC33FJ64MC204T-I/PT is purpose-built for field-oriented control of BLDC and PMSM motors: its dedicated Motor Control PWM module generates six complementary outputs with programmable dead-time and fault shutdown, while the high-speed ADC is PWM-triggered to sample phase currents at exactly the same point of every switching cycle, eliminating ripple-induced measurement error. The 40 MIPS DSP engine with single-cycle MAC executes the FOC current and speed loops with deterministic latency, and the DMA controller streams ADC results to RAM without CPU intervention, freeing MIPS for the speed loop and communication. Typical power stages use this DSC with a three-phase gate driver such as the MCP802x or IR2136 family.
Recommended
Digital Switch-Mode Power Supplies and PFC
In digital SMPS and power-factor-correction stages, the DSPIC33FJ64MC204T-I/PT closes fast voltage and current loops at switching frequencies of 100 kHz to several hundred kHz. The PWM module supports complementary outputs with dead-time for half-bridge and synchronous topologies, ADC conversion can be triggered at mid-PWM-cycle to sample inductor current away from switching noise, and the DSP engine's single-cycle MAC implements proportional-integral compensators with minimal cycle count. The DMA controller moves sampled data autonomously, keeping loop jitter in the nanosecond range. Its 3.3 V I/O interfaces cleanly with isolated feedback devices, making it a strong fit for telecom rectifiers, solar micro-inverters, and LLC converters.
Recommended
Industrial Automation and Sensor Conditioning
For industrial control nodes, the DSPIC33FJ64MC204T-I/PT combines a 40 MIPS 16-bit core with UART, SPI, and I2C ports to bridge analog front ends and field buses. The on-chip ADC with multiple sample-and-hold circuits digitizes sensor channels synchronized to timers for coherent sampling, while the DMA controller buffers data streams with zero CPU overhead. Flash self-programming allows field firmware updates over UART, and the internal fast RC oscillator with PLL supports clock-redundant designs. Typical deployments include weigh scales, flow meters, PLC I/O modules, and vibration-monitoring nodes, where the DSP instructions accelerate FFT-based condition-monitoring algorithms without an external DSP.
Recommended
Automotive and E-Mobility Auxiliary Control
Although the I temperature grade is -40C to +85C, the DSPIC33FJ64MC204T-I/PT serves non-powertrain automotive functions such as window lift, pump control, HVAC blower drives, and actuator positioning. The Motor Control PWM module with dead-time insertion drives H-bridges and three-phase stages for these auxiliary motors, while the ADC samples current for stall detection and diagnostic coverage. The E-grade sibling DSPIC33FJ64MC204T-E/PT extends operation to -40C to +125C for under-hood positions using the same firmware. The deterministic interrupt architecture and hardware DSP engine give predictable loop timing that software-timed solutions on general MCUs cannot guarantee.
Recommended
Battery Management and Portable Power Systems
Battery chargers and BMS units benefit from the DSPIC33FJ64MC204T-I/PT's combination of synchronous buck PWM control, multi-channel ADC for cell-voltage and current monitoring, and UART/I2C for host communication. The DMA controller services ADC scan sequences automatically, so cell voltages are sampled on a precise timer schedule independent of firmware load, while the DSP engine computes coulomb counting and state-of-charge filters efficiently. Its 3.0 V to 3.6 V single-supply operation and internal oscillator simplify bias design in compact chargers for power tools, e-bikes, and UPS modules. Flash self-write enables logging of fault and usage history in non-volatile memory without external EEPROM.
Recommended
Audio Signal Processing and Effects
The dsPIC33F DSP engine - 40 MIPS, single-cycle MAC, dual 40-bit accumulators, and bit-reversed addressing - makes the DSPIC33FJ64MC204T-I/PT a practical host for real-time audio effects, active crossovers, and speech-band processing. ADC sampling synchronized via timer interrupts feeds block-based FIR and IIR filters whose multiply-accumulate loops execute at full core rate, and the DCI (Data Converter Interface) peripheral connects directly to audio codecs over a standard I2S-like frame. With 64 KB of FLASH there is headroom for filter coefficient tables plus a communication stack, and UART-based MIDI or host control integrates easily into effects pedals, mixers, and install-audio controllers.
Recommended
Recommended Products Summary
Engineering reference data for DSPIC33FJ64MC204T-I/PT — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | DSPIC33FJ64MC204-I/PT | DSPIC33FJ32MC304-E/PT | DSPIC33FJ64GP204T-I/PT | DSPIC33FJ32GP204-I/PT |
|---|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm), PT | 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 |
| CPU Speed | 40 MIPS (16-bit) | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Program FLASH | 64 KB | 64 KB | 32 KB | 64 KB | 32 KB |
| Motor Control PWM | Yes | Yes | Yes | No (GP variant) | No (GP variant) |
| DMA | Yes | Yes | Yes | Yes | Yes |
| Operating Temperature | -40C to +85C (I) | -40C to +85C | -40C to +125C (E) | -40C to +85C | -40C to +85C |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V | 3.0 V to 3.6 V |
| Packing | Tape & Reel (T) | Tray | Tray (non-T) | Tape & Reel | Tray (non-T) |
Key Differentiators
- Dedicated Motor Control PWM module (vs DSPIC33FJ64GP204T-I/PT)
- Double the program memory (vs DSPIC33FJ32MC304-E/PT)
- Tape-and-reel production packing (vs DSPIC33FJ64MC204-I/PT)
Design Notes
Decouple every VDD pin (13, 16, 28) with a 0.1 uF ceramic capacitor placed within 3-5 mm of the pin, plus one bulk 10 uF capacitor per supply rail. The VCAP pin (20) requires the bulk capacitor specified in the datasheet for the internal 1.8 V core regulator - omitting or undersizing it is the most common cause of failure to start and erratic brown-out behavior on dsPIC33FJ designs. Keep AVDD (29) filtered separately through an LC or RC network from the digital 3.3 V rail for best ADC accuracy.
When driving a three-phase inverter from the Motor Control PWM outputs, route PWM1H/PWM1L pairs away from the analog inputs (RB0-RB5/AN0-AN5) and the AVDD/AVSS corner to prevent switching noise coupling into current-sense samples. Trigger the ADC at mid-PWM off-time (center-aligned trigger) so sampling occurs when the bridge is in a defined state; this practice, documented in Microchip's motor-control application notes, can reduce current-measurement error from tens of counts to a few LSBs.
Configure the configuration words (FOSC, FWDT, FICD) correctly at first flash - a wrong oscillator setting with PLL can lock the device into a non-bootable state requiring MCLR-controlled recovery. Reserve RB6/RB7 (PGEC/PGED, pins 14-15) for In-Circuit Serial Programming; do not load them heavily during programming sessions. Also verify code fits the 64 KB FLASH with growth margin: if the application will expand, migrate to the 128 KB family members or the pin-compatible PIC24HJ parts instead of filling this device to its limit.
Compliance Information
Per digchip specification listing, the package is lead-free plastic. RoHS compliance per distributor listings. AEC-Q100 not claimed for the I grade; the E grade targets extended temperature but AEC-Q100 qualification is not documented in the provided data.
