DSPIC33FJ128MC804-I/PT - 16-bit DSC, 128KB Flash, 44-TQFP | Microchip
MPN: DSPIC33FJ128MC804-I/PT ✓ NakahandaDSPIC33FJ128MC804-I/PT Ulas
A Digital Signal Controller (DSC) is a hybrid MCU/DSP class of microcontroller that combines a deterministic 16-bit microcontroller core with DSP-grade datapath elements (single-cycle 16x16 MAC, dual 40-bit accumulators, barrel shifter). DSCs sit in the hierarchy between general-purpose MCUs and standalone DSPs, and are most often used where a closed-loop control law must execute every PWM cycle. The dsPIC33F family in particular targets motor control, power conversion, and high-density sensor fusion.
Key feature highlights of this part include up to nine 16-bit PWM outputs with dedicated Fault inputs, a 10-bit ADC at up to 1.1 Msps with as many as 13 input channels, two analog comparators, and a 16-bit/32-bit peripheral pin-select (PPS) remap engine for flexible I/O mapping. The part also exposes two UART, two SPI, and one I2C serial interface, plus a Parallel Master Port (PMP) for external bus expansion. On-chip oscillators and a 5-timer module (Timer1-5) are included; no external crystal is strictly required for full-speed operation.
Architecturally, the part uses a modified Harvard bus with separate program and data paths, plus a DMA controller (8 channels) that offloads peripheral-data movement so the CPU is free to run control loops. The motor-control PWM (MCPWM) block supports complementary outputs with programmable dead-time, center-aligned or edge-aligned modes, and ADC triggering - a hardware-level combination that few general-purpose MCUs can match.
Typical applications include brushless DC (BLDC) and permanent-magnet synchronous motor (PMSM) sensorless FOC drives, solar micro-inverters and PFC stages, industrial PLCs, and digital power supplies. A common use is a 3-phase sensorless FOC running at 20 kHz PWM with the dsPIC doing Clarke/Park transforms and an SMO observer on top of the MCPWM and ADC.
Design tip: when migrating from the dsPIC30F or PIC24 families, peripheral register maps and PPS I/O assignments differ - validate code on the new silicon. For multi-channel motor control, allocate DMA channels to ADC reads before the CPU touches them to keep ISR time below 5 us.
This page combines datasheet specifications, distributor pricing tiers, and curated drop-in alternatives sourced from Microchip's dsPIC33F family - information synthesized for engineers evaluating this DSC for production designs.
Mga alternatibo na pwedeng ilagay na DSPIC33FJ128MC804-I/PT — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok DSPIC33FJ128MC804-I/PT (parehas na form factor at footprint) — pagkakaiba sa Package, Timers, Operating Temperature, Core Architecture, ADC.
DSPIC33FJ128MC804-E/PT
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
DSPIC33FJ128MC804-H/PT
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →DSPIC33FJ128GP804-I/PT
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →DSPIC33FJ128MC204-I/PT
✅ Drop-In ⚠️ Mga Talaan Hindi NaiwerikmoMagkontak para sa presyo
Tingnan ang Datasheet →DSPIC33FJ128MC708A-I/PT
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo📋 Alternatibo na Reference (hindi sa katalogo)
DSPIC33FJ128MC710-I/PT
✅ Drop-In ⚠️ Mga Talaan Hindi NaiwerikmoMagkontak para sa presyo
Tingnan ang Datasheet →DSPIC33FJ128MC804-I/PT Mga Pinakamataas na Rating at Electrical Characteristics
| Core Architecture | 16-bit dsPIC33F Modified Harvard |
| Program Memory (Flash) | 128 KB |
| Data RAM | 16 KB |
| Operating Frequency | 40 MIPS (max) |
| Packhaging | 44-pin TQFP (PT) 10x10 mm |
| PWM Channels | Up to 9 (16-bit) with dedicated Fault inputs |
| ADC | 10-bit, up to 1.1 Msps, up to 13 channels |
| Analog Comparators | 2 |
| DMA Channels | 8 |
| UART | 2 |
| SPI | 2 |
| I2C | 1 |
| Parallel Master Port (PMP) | Yes |
| Timers | 5 (16-bit) |
| Peripheral Pin Select (PPS) | Yes (16-bit/32-bit I/O remap) |
| Temperature na Operasyon | -40C to +85C (Industrial -I grade) |
| Volte ng Pagbibigay | 3.0 V to 3.6 V |
| Uri ng Pagpapasok | Surface Mount |
| Level ng MSL | 3 (per JEDEC J-STD-020) |
| Tindminan RoHS | Compliant |
Pin Configuration ng DSPIC33FJ128MC804-I/PT
| Pin 1 | RP15/PWM3H/PMD3 — Remappable I/O / PWM output / PMP data line |
| Pin 2 | RP14/PWM3L/PMD2 — Remappable I/O / PWM complementary output / PMP data line |
| Pin 3 | RP13/PWM2H/PMD1 — Remappable I/O / PWM output / PMP data line |
| Pin 4 | RP12/PWM2L/PMD0 — Remappable I/O / PWM complementary output / PMP data line |
| Pin 5 | RP11/PWM1H/PMWR — Remappable I/O / PWM output / PMP write strobe |
| Pin 6 | RP10/PWM1L/PMRD — Remappable I/O / PWM complementary output / PMP read strobe |
| Pin 7 | RP9/PWM4H — Remappable I/O / PWM output |
| Pin 8 | RP8/PWM4L — Remappable I/O / PWM complementary output |
| Pin 9 | VSS — Ground reference |
| Pin 10 | OSCI/CLKI/RC12 — Crystal oscillator input / external clock |
| Pin 11 | OSCO/CLKO/RC15 — Crystal oscillator output |
| Pin 12 | RP7/RC13 — Remappable I/O |
| Pin 13 | RP6/RC14 — Remappable I/O |
| Pin 14 | AVDD — Analog supply voltage (3.0-3.6V) |
| Pin 15 | AVSS — Analog ground reference |
| Pin 16 | AN0/VREF+/CVREF+/RA0 — ADC input / voltage reference + |
| Pin 17 | AN1/VREF-/CVREF-/RA1 — ADC input / voltage reference - |
| Pin 18 | AN2/RA2 — ADC input |
| Pin 19 | AN3/RA3 — ADC input |
| Pin 20 | AN4/RA4 — ADC input |
| Pin 21 | AN5/RA5 — ADC input |
| Pin 22 | AN6/RA6 — ADC input |
| Pin 23 | AN7/RA7 — ADC input |
| Pin 24 | AN8/RB0 — ADC input / remappable I/O |
| Pin 25 | AN9/RB1 — ADC input / remappable I/O |
| Pin 26 | AN10/RB2 — ADC input / remappable I/O |
| Pin 27 | AN11/RB3 — ADC input / remappable I/O |
| Pin 28 | AN12/RB4 — ADC input / remappable I/O |
| Pin 29 | VSS — Ground reference |
| Pin 30 | VDD — Digital supply voltage (3.0-3.6V) |
| Pin 31 | RP5/RB5 — Remappable I/O |
| Pin 32 | RP4/RB6 — Remappable I/O |
| Pin 33 | RP3/RB7 — Remappable I/O |
| Pin 34 | RP2/RB8 — Remappable I/O |
| Pin 35 | RP1/RB9 — Remappable I/O |
| Pin 36 | RP0/RB10 — Remappable I/O |
| Pin 37 | FLT32/RP18 — PWM Fault input 32 / remappable I/O |
| Pin 38 | FLT31/RP17 — PWM Fault input 31 / remappable I/O |
| Pin 39 | PWM5H/RP16 — PWM output / remappable I/O |
| Pin 40 | PWM5L/RP19 — PWM complementary output / remappable I/O |
| Pin 41 | PWM6H/RP20 — PWM output / remappable I/O |
| Pin 42 | PWM6L/RP21 — PWM complementary output / remappable I/O |
| Pin 43 | PWM7H/RP22 — PWM output / remappable I/O |
| Pin 44 | PWM7L/RP23 — PWM complementary output / remappable I/O |
Tipikal na mga Gamit
DSPIC33FJ128MC804-I/PT ay nararapat para sa 7 aplikasyons: 3-Phase BLDC/PMSM Sensorless FOC Motor Control, Digital Solar Micro-Inverter / PFC Stage, Industrial PLC and Process Control, Switch-Mode Power Supply (SMPS) Digital Control, Sensorless Fan / Pump Speed Controller, Automotive Body Electronics (Non-Safety), Audio Amplifier / DSP Pre-Processing.
3-Phase BLDC/PMSM Sensorless FOC Motor Control
The DSPIC33FJ128MC804-I/PT is purpose-built for sensorless field-oriented control of 3-phase BLDC and PMSM motors. Its 9-channel MCPWM block provides complementary 16-bit PWM outputs with programmable dead-time and ADC-trigger synchronization, eliminating CPU overhead for switching event timing. The 40 MIPS DSP engine executes Clarke/Park transforms and sliding-mode observer (SMO) position estimators in under 5 us per PWM cycle. The 10-bit 1.1 Msps ADC with 13 channels samples three phase currents plus DC-bus voltage simultaneously, while the 8-channel DMA streams conversions directly into SRAM without CPU intervention. Engineers should configure DMA channels for ADC-before-ISR data movement to keep the inner current loop under 5 us.
Inirekomenda
Digital Solar Micro-Inverter / PFC Stage
The DSPIC33FJ128MC804-I/PT drives single-phase or interleaved solar micro-inverters and power-factor-correction (PFC) boost stages at switching frequencies up to 100 kHz. The MCPWM block generates boost PFC switch gate signals with current-mode control timing, while the on-chip analog comparators provide hardware-cycle-by-cycle overcurrent protection. The 16-bit DSP datapath runs MPPT algorithms (Perturb-and-Observe or Incremental Conductance) and RMS current calculations in real time. The integrated 10-bit ADC samples input voltage, inductor current, and output voltage simultaneously. For grid-tie applications, the UART or SPI peripheral can drive an external grid-monitor IC for anti-islanding detection.
Inirekomenda
Industrial PLC and Process Control
The DSPIC33FJ128MC804-I/PT serves as the control processor in compact industrial PLC modules, managing PID loops for temperature, pressure, and flow with deterministic interrupt latency. The 5-timer module supports multiple time bases for PID update rates from 1 kHz down to 1 Hz. The PMP peripheral interfaces with external LCD or expansion I/O modules, while UART/SPI/I2C connect to industrial sensor buses (Modbus RTU over UART, SPI sensors). The 128 KB Flash accommodates complex ladder-logic interpreters or IEC 61131-3 runtime, and 16 KB SRAM handles data tables and stack. Industrial -40C to +85C operating range is met by the -I temperature grade.
Inirekomenda
Switch-Mode Power Supply (SMPS) Digital Control
The DSPIC33FJ128MC804-I/PT implements digital control loops for isolated and non-isolated SMPS topologies including buck, boost, half-bridge, and full-bridge converters. The high-speed ADC samples output voltage and current at up to 1.1 Msps, enabling digital peak-current-mode control at switching frequencies up to 500 kHz. The PWM block drives primary-side MOSFETs with programmable dead-time, while hardware Fault inputs provide nanosecond-scale overcurrent shutdown. The DSP engine executes voltage-mode and current-mode compensators (Type-II/Type-III) using floating-point math emulated in fixed-point, with cycle times well under 10 us.
Inirekomenda
Sensorless Fan / Pump Speed Controller
The DSPIC33FJ128MC804-I/PT drives BLDC fan and pump motors in HVAC and appliance applications using back-EMF sensing for commutation without Hall sensors. The MCPWM block commutates the 3-phase bridge based on firmware-decoded zero-crossing events from the analog comparators, eliminating the cost of Hall-effect sensors. The 40 MIPS CPU runs back-EMF integration and speed-PI loops in firmware. The integrated 10-bit ADC monitors supply voltage for brownout detection and provides soft-start ramp profiling. The 16 KB SRAM is ample for storing speed profiles, fault logs, and lookup tables for BEMF-to-speed conversion.
Inirekomenda
Automotive Body Electronics (Non-Safety)
The DSPIC33FJ128MC804-I/PT powers non-safety automotive body modules such as HVAC flap actuators, headlight leveling motors, and power-window anti-pinch controllers. The MCPWM generates precise stepper or DC-motor drive waveforms with hardware-Fault shutdown, while the ADC monitors position-feedback potentiometers or current-sense shunts. The 5 timers support multiple time bases for motor ramps and anti-pinch detection algorithms. For harsh under-hood environments, the -H (high-temperature) variant operates at -40C to +150C. UART connects to the vehicle CAN/LIN gateway via an external transceiver.
Inirekomenda
Audio Amplifier / DSP Pre-Processing
The DSPIC33FJ128MC804-I/PT serves as a digital pre-processor for Class-D audio amplifiers, providing EQ, dynamic-range compression, and speaker-protection algorithms in real time. The DSP engine's 16x16 MAC and 40-bit accumulator are well-suited to IIR/FIR biquad filters at 48 kHz sample rates. The 10-bit ADC handles line-input audio digitization, while the MCPWM generates the Class-D switching carrier with hardware dead-time. UART/SPI interfaces connect to a host controller for streaming audio over I2S or USB. The 128 KB Flash supports multi-band compressor presets and user-customizable EQ profiles stored in non-volatile memory.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for DSPIC33FJ128MC804-I/PT — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | DSPIC33FJ128MC804-E/PT | DSPIC33FJ128MC804-H/PT | DSPIC33FJ128GP804-I/PT | DSPIC33FJ128MC204-I/PT | DSPIC33FJ128MC708A-I/PT |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | TQFP-44 (PT) 10x10 mm | TQFP-44 (PT) 10x10 mm - same | TQFP-44 (PT) 10x10 mm - same | TQFP-44 (PT) 10x10 mm - same | TQFP-44 (PT) 10x10 mm - same | TQFP-44 (PT) 10x10 mm - same |
| Program Memory (Flash) | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB |
| Data RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| PWM Channels | 9 (16-bit, MCPWM) | 9 (16-bit, MCPWM) | 9 (16-bit, MCPWM) | 9 (general-purpose PWM, no MCPWM) | 6 (16-bit, MCPWM) | 8 (16-bit, MCPWM) |
| ADC | 10-bit, 1.1 Msps, 13 ch | 10-bit, 1.1 Msps, 13 ch | 10-bit, 1.1 Msps, 13 ch | 10-bit, 1.1 Msps, 13 ch | 10-bit, 1.1 Msps, 13 ch | 10-bit, 1.1 Msps, 13 ch |
| Operating Temperature | -40C to +85C (Industrial) | -40C to +125C (Extended) | -40C to +150C (High-temp) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
Pangunahing mga Pagkakaiba
- Dedicated Motor Control PWM (MCPWM) with hardware Fault inputs and ADC-trigger (kumpara saDSPIC33FJ128GP804-I/PT)
- Industrial -I temperature grade vs Extended -E temperature grade (kumpara saDSPIC33FJ128MC804-E/PT)
- Pin-compatible with -E and -H temperature grades for design reuse (kumpara saDSPIC33FJ128MC804-H/PT)
Talaan ng Disenyo
Place a 10 uF bulk capacitor and 0.1 uF decoupling ceramic as close as possible to the VDD pin (pin 30), with separate AVDD filtering (pin 14). The dsPIC33F's on-chip voltage regulator requires both VDD and AVDD bypassed; AVDD noise above 50 mVpk-pk degrades ADC ENOB. Estimated: at 40 MIPS CPU with all peripherals active, the part draws approximately 70 mA - design the 3.3 V rail for at least 100 mA headroom. Use a ferrite bead between digital and analog supply planes for noise isolation.
Estimated: at full 40 MIPS with all peripherals active, junction temperature rise above ambient is approximately 8-10 C/W (theta_JA of 44-pin TQFP is approximately 50 C/W on a 4-layer JEDEC test PCB). For continuous operation at +85C ambient, the junction should remain below +125C, leaving 40 C of margin - generally adequate without active cooling. For -H grade variants in +125C ambient, validate with a thermal probe on a sample board. Avoid placing the IC adjacent to high-current power stages.
The 44-pin TQFP (PT) has 0.8 mm pitch - use 0.4 mm-wide traces and via-in-pad for ground returns on the exposed pad. Route PWM outputs as differential pairs (PWMxH/PWMxL) with matched length to within 1 mm to preserve dead-time symmetry; mismatched traces skew effective dead-time and can cause shoot-through. Keep analog traces (AN0-AN12) away from PWM switching nodes by at least 3 trace-widths. Place the decoupling capacitor loop area under 5 mm^2 to minimize inductance.
Do not leave unused PWM outputs floating - tie them to ground through 10 kOhm resistors to prevent noise injection. When migrating code from dsPIC30F, the Peripheral Pin Select (PPS) registers must be unlocked via the IOLOCK sequence - firmware that runs on dsPIC30F will not configure PPS on the dsPIC33F and will appear to hang. Also note that the dsPIC33F ADC requires the AD1PCFGL register to configure analog/digital mode on shared ANx pins; leaving it at reset disables the ADC entirely. Always read the errata sheet before finalizing the design.
Impormasyon ng Pagsunod sa Kautusan
RoHS and REACH compliant per Microchip product page. Standard -I/PT variant is NOT AEC-Q100 qualified - choose -H/PT variant for automotive high-temperature applications. Lead-free and halogen-free per Microchip material declaration.