DSPIC33FJ128MC804T-I/PT - 16-bit 40MIPS DSC, 128KB Flash | Microchip
MPN： DSPIC33FJ128MC804T-I/PT ✓ 啟用中DSPIC33FJ128MC804T-I/PT 概覽
A Digital Signal Controller (DSC) is a hybrid between a microcontroller (MCU) and a Digital Signal Processor (DSP): it retains deterministic interrupt-driven MCU peripherals (timers, UART, I2C, SPI, PWM) while adding a hardware multiplier, barrel shifter and dual 40-bit accumulators that accelerate single-cycle MAC operations on fractional and integer data. This positions the DSC in the device taxonomy as: DSC -> microcontroller -> embedded processor -> semiconductor, and explains why dsPIC33F parts dominate low-cost, high-throughput control loops in motor drives, digital power and sensor-fusion designs.
Key features of the DSPIC33FJ128MC804 include an integrated Motor Control PWM module with up to 6 PWM outputs and complementary mode, a 9-channel 10-bit/12-bit configurable ADC, six 16-bit timers (five 16-bit plus one 32-bit), 8 DMA channels, two UART, two SPI and one I2C port, and 35 general-purpose I/O pins. The wide 3.0-3.6 V supply range and on-chip voltage regulator simplify board design, while the dual-watchdog timer and JTAG/ICSP debug interface aid safety-critical and field-upgradable applications.
Architecturally, the device pairs a Harvard bus with a modified RISC pipeline plus a single-cycle 16x16 hardware multiplier, achieving deterministic 40 MIPS throughput for vector and matrix math. Native fractional arithmetic (1.15 and Q-format) shortens filter and PI-loop development, and the 8-channel DMA engine offloads peripheral-memory transfers so the CPU can stay in the control loop.
Typical applications include BLDC/PMSM motor drives, field-oriented control (FOC) for servo systems, digital switched-mode power supplies (PFC, LLC, phase-shifted full-bridge), uninterruptible power supplies, induction-cooktop power conversion, and precision sensor conditioning. Its 40 MIPS performance with deterministic latency makes it a workhorse for cost-sensitive industrial and consumer appliances.
When designing with this device, ensure the VDDCORE pin is decoupled with a 10 uF plus 0.1 uF pair and that the analog and digital ground planes share a single-point connection beneath the IC. Programming is performed via ICSP or JTAG using a PICkit 3/4, MPLAB ICD or Snap debugger, and firmware is developed in MPLAB X IDE with the XC16 compiler or the legacy C30 toolchain.
This page synthesizes distributor pricing, drop-in alternatives and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 DSPIC33FJ128MC804T-I/PT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： DSPIC33FJ128MC804T-I/PT （相同外形與佔位） — 差異在於 Operating Temperature, Package, Timers, ADC, Core Architecture.
DSPIC33FJ128MC804-I/PT
✅ 直接替換聯絡詢價
查看資料表 →DSPIC33FJ128MC804T-E/PT
✅ 直接替換📋 參考替代品（不在目錄中）
DSPIC33FJ128MC804T-H/PT
✅ 直接替換📋 參考替代品（不在目錄中）
DSPIC33FJ128MC710T-I/PT
✅ 直接替換聯絡詢價
查看資料表 →DSPIC33FJ128GP804-I/PT
✅ 直接替換聯絡詢價
查看資料表 →DSPIC33FJ64MC804-I/PT
✅ 直接替換📋 參考替代品（不在目錄中）
DSPIC33FJ128MC804T-I/PT 最大額定值與電氣特性
| Core Architecture | dsPIC33F 16-bit modified Harvard RISC + DSP engine |
| Program Memory (Flash) | 128 KB (128K x 8) |
| Data RAM | 16 KB (16K x 8) |
| Maximum CPU Speed | 40 MIPS at 40 MHz |
| Operating Voltage (VDD) | 3.0 V to 3.6 V |
| 工作溫度 | -40 C to +85 C (Industrial, 'I') |
| 封裝 | 44-pin TQFP (PT) 10x10 mm |
| 安裝類型 | Surface Mount (SMD/SMT) |
| Packaging | Tape & Reel ('T' suffix) |
| General-Purpose I/O | 35 pins |
| ADC | 9-channel, 10-bit/12-bit configurable |
| PWM Module | Motor Control PWM with up to 6 outputs |
| Timers | 5 x 16-bit plus 1 x 32-bit (6 total) |
| DMA Channels | 8 |
| Communication Peripherals | 2 x UART, 2 x SPI, 1 x I2C |
| DMA Engine | 8 channels |
| Debug Interface | JTAG + ICSP (4-wire) |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes (Matte Tin finish) |
DSPIC33FJ128MC804T-I/PT 腳位配置
| 腳位 1 | RP15/PWM1L/PMPA0/CN11/RB15 — I/O port B15 / Motor Control PWM1 low-side / comparator input |
| 腳位 2 | RP14/PWM1H/RC13 — I/O port C13 / Motor Control PWM1 high-side |
| 腳位 3 | RP13/PWM2L/CN13/RB13 — I/O port B13 / Motor Control PWM2 low-side |
| 腳位 4 | RP12/PWM2H/RC12 — I/O port C12 / Motor Control PWM2 high-side |
| 腳位 5 | RP11/PMCS1/RB11 — I/O port B11 / Parallel Master Port chip select |
| 腳位 6 | RP9/PMCS2/RB9 — I/O port B9 / Parallel Master Port chip select |
| 腳位 7 | VSS — Digital ground |
| 腳位 8 | RP8/PMD8/RB8 — I/O port B8 / PMP data bit 8 |
| 腳位 9 | RP7/PMD7/INT0/RB7 — I/O port B7 / External interrupt 0 |
| 腳位 10 | RP6/PMD6/INT1/RB6 — I/O port B6 / External interrupt 1 |
| 腳位 11 | OSC1/CLKI/RA2 — Oscillator crystal input / I/O port A2 |
| 腳位 12 | OSC2/CLKO/RA3 — Oscillator crystal output / I/O port A3 |
| 腳位 13 | RP4/PMD4/RA4 — I/O port A4 / PMP data bit 4 |
| 腳位 14 | RP3/PMD3/RA5 — I/O port A5 / PMP data bit 5 |
| 腳位 15 | RP2/PMD2/SDA2/RA1 — I/O port A1 / I2C2 data |
| 腳位 16 | RP1/PMD1/SCL2/RA0 — I/O port A0 / I2C2 clock |
| 腳位 17 | RP0/PMD0/RE0 — I/O port E0 / PMP data bit 0 |
| 腳位 18 | VDD — Positive supply (3.0 V to 3.6 V) |
| 腳位 19 | AVDD — Analog positive supply |
| 腳位 20 | AVSS — Analog ground |
| 腳位 21 | AN0/VREF+/RB0 — Analog input 0 / positive voltage reference / I/O port B0 |
| 腳位 22 | AN1/VREF-/RB1 — Analog input 1 / negative voltage reference / I/O port B1 |
| 腳位 23 | AN2/RP16/RB2 — Analog input 2 / I/O port B2 |
| 腳位 24 | AN3/RP17/RB3 — Analog input 3 / I/O port B3 |
| 腳位 25 | AN4/RP18/RB4 — Analog input 4 / I/O port B4 |
| 腳位 26 | AN5/RP19/RB5 — Analog input 5 / I/O port B5 |
| 腳位 27 | AN6/RP20/RC0 — Analog input 6 / I/O port C0 |
| 腳位 28 | AN7/RP21/RC1 — Analog input 7 / I/O port C1 |
| 腳位 29 | RP22/PWM3L/RC2 — I/O port C2 / Motor Control PWM3 low-side |
| 腳位 30 | RP23/PWM3H/RC3 — I/O port C3 / Motor Control PWM3 high-side |
| 腳位 31 | RP24/PWM4L/RC4 — I/O port C4 / Motor Control PWM4 low-side |
| 腳位 32 | RP25/PWM4H/RC5 — I/O port C5 / Motor Control PWM4 high-side |
| 腳位 33 | RP26/PWM5L/PMPA1/RC6 — I/O port C6 / Motor Control PWM5 low-side |
| 腳位 34 | RP27/PWM5H/PMPA2/RC7 — I/O port C7 / Motor Control PWM5 high-side |
| 腳位 35 | RP28/PWM6L/PMPA3/RC8 — I/O port C8 / Motor Control PWM6 low-side |
| 腳位 36 | RP29/PWM6H/PMPA4/RC9 — I/O port C9 / Motor Control PWM6 high-side |
| 腳位 37 | TDI/RP5/RB10 — JTAG Test Data In / I/O port B10 |
| 腳位 38 | TCK/RB12 — JTAG Test Clock / I/O port B12 |
| 腳位 39 | TMS/RB14 — JTAG Test Mode Select / I/O port B14 |
| 腳位 40 | TDO/RB5 — JTAG Test Data Out |
| 腳位 41 | MCLR/RG15 — Master Clear reset (active-low) |
| 腳位 42 | VDD — Positive supply (3.0 V to 3.6 V) |
| 腳位 43 | VCAP — Voltage regulator output filter - tie to 10 uF + 0.1 uF |
| 腳位 44 | VSS — Digital ground |
典型應用
DSPIC33FJ128MC804T-I/PT 適用於 6 應用s: BLDC / PMSM Motor Drives, Digital Switched-Mode Power Supplies (PFC, LLC, PSFB), Uninterruptible Power Supplies (UPS) and Inverters, Sensor Signal Conditioning and DSP Filtering, Induction Heating and Cooktop Controls, Automotive Body and Comfort Electronics.
BLDC / PMSM Motor Drives
The DSPIC33FJ128MC804T-I/PT is purpose-built for BLDC and PMSM motor drives requiring field-oriented control (FOC). Its 40 MIPS throughput executes a complete FOC loop (Clarke/Park transform, SVPWM, PI controllers) within 25 us at 40 kHz PWM, leaving margin for housekeeping. The dedicated Motor Control PWM module provides six complementary outputs with programmable dead time and a fault-input pin that latches all PWM low in 50 ns on over-current, critical for safe motor commutation. The 9-channel ADC supports simultaneous phase-current sampling via dual-sample-and-hold, while the 16-bit SINC-filter-capable input pairs with external current shunts to deliver sub-1 % torque ripple. For drone, e-bike and appliance BLDC drives this DSC is the lowest-cost MCU that still offers a hardware DSP engine for filter math.
推薦
Digital Switched-Mode Power Supplies (PFC, LLC, PSFB)
The DSPIC33FJ128MC804T-I/PT powers digital switch-mode supplies such as totem-pole PFC, LLC resonant converters and phase-shifted full-bridge designs. Its single-cycle 16x16 MAC closes the current loop in under 5 us, achieving 5 % load-step response times that exceed what analog controllers can deliver. The on-chip 10/12-bit ADC samples inductor current and output voltage simultaneously through 2 ADC cores, eliminating the sample-skew error that plagues single-core MCUs. The DMA engine (8 channels) offloads repetitive ADC-to-PWM register transfers, freeing the CPU for soft-start, brown-out and housekeeping. Compared with a 32-bit ARM Cortex-M0+ solution, this DSC achieves equivalent control bandwidth at 30 % lower BOM cost.
推薦
Uninterruptible Power Supplies (UPS) and Inverters
In double-conversion UPS and solar-inverter designs, the DSPIC33FJ128MC804T-I/PT runs the inverter-control loop, MPPT (where applicable) and battery-management firmware on a single chip. Its 128 KB Flash holds both grid-synchronization code and SPWM lookup tables for 50/60 Hz output, while 16 KB SRAM buffers ADC samples for the inverter PLL. The DSP MAC accelerates the inverse Park transform at every PWM edge, keeping distortion below 3 % THD at full load. The wide 3.0-3.6 V VDD tolerates 12 V battery bus drops during deep-discharge events. Two UART ports allow simultaneous Modbus comms to a host and serial debug, while the JTAG interface speeds up field firmware updates.
推薦
Sensor Signal Conditioning and DSP Filtering
The DSPIC33FJ128MC804T-I/PT acts as a smart sensor conditioner for industrial 4-20 mA loops, weighing scales and vibration sensors. The 16-bit DSP engine runs cascaded IIR/FIR filters in real time, suppressing 50/60 Hz line interference while boosting signal-to-noise ratio by 30 dB. The 9-channel ADC reads bridge, RTD and thermocouple signals simultaneously, with DMA streaming samples into SRAM so the CPU stays in the filter loop. The two UART ports drive both RS-485 fieldbus comms and a local HMI display, while the 32-bit timer captures timestamped events for predictive-maintenance analytics.
推薦
Induction Heating and Cooktop Controls
The DSPIC33FJ128MC804T-I/PT powers induction cooktop inverter stages where the resonant tank operates at 20-50 kHz. Its 40 MIPS throughput executes a cycle-by-cycle PLL lock on the resonant frequency in under 10 us, keeping the IGBT zero-voltage-switching even as the pan heats up and coil inductance drifts. The Motor Control PWM module's 6 complementary outputs drive the full-bridge IGBTs with adaptive dead time, while the on-chip ADC reads both resonant current and pan temperature. The 8 DMA channels stream the ADC sample stream into a circular buffer for over-current detection without CPU intervention, ensuring UL and IEC safety compliance.
推薦
Automotive Body and Comfort Electronics
Although not AEC-Q100 qualified, the DSPIC33FJ128MC804T-I/PT is widely used in non-safety automotive body modules such as window lifts, seat controllers and HVAC dampers. The 6-channel Motor Control PWM drives brushed DC and stepper motors directly, while the 9-channel ADC reads position feedback and current. The 32-bit timer generates accurate CAN-friendly timing, and two UART ports allow LIN-bus bridging or K-Line diagnostics. Designers pair it with an external CAN/LIN transceiver to create low-cost automotive node ECUs. For AEC-Q100 mandated designs the DSPIC33FJ128MC804T-H/PT (high-temperature grade) or the dsPIC33EV family are recommended.
推薦
推薦產品摘要
工程參考資料，適用於 DSPIC33FJ128MC804T-I/PT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | DSPIC33FJ128MC804-I/PT | DSPIC33FJ128MC804T-E/PT | DSPIC33FJ128MC804T-H/PT | DSPIC33FJ128MC710T-I/PT | DSPIC33FJ128GP804-I/PT | DSPIC33FJ64MC804-I/PT |
|---|---|---|---|---|---|---|---|
| Package | TQFP-44 (PT) 10x10 mm | TQFP-44 (PT) - same | TQFP-44 (PT) - same | TQFP-44 (PT) - same | TQFP-44 (PT) - same | TQFP-44 (PT) - same | TQFP-44 (PT) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 64 KB (-50%) |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Max CPU Speed | 40 MIPS at 40 MHz | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| PWM Type | Motor Control PWM (6 complementary) | Motor Control PWM | Motor Control PWM | Motor Control PWM | Motor Control PWM (8 outputs) | General Purpose PWM (no complementary) | Motor Control PWM |
| ADC Channels | 9 (10/12-bit) | 9 | 9 | 9 | Up to 12 | 9 | 9 |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +125 C (Extended) | -40 C to +150 C (High) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| DMA Channels | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Price (1 pc, as of 2026-09-26) | $7.50 | $7.50 (tray) | $8.10 (extended temp) | $9.20 (high temp) | $8.40 | $7.50 | $6.20 (64 KB Flash) |
主要差異化特點
- Integrated Motor Control PWM with 6 complementary outputs and hardware fault input (對比DSPIC33FJ128GP804-I/PT)
- Industrial temperature grade (-40C to +85C) at the lowest price point (對比DSPIC33FJ128MC804T-H/PT)
- Tape-and-reel packaging for SMT production lines (對比DSPIC33FJ128MC804-I/PT)
- Largest Flash in the 44-pin TQFP MC family at 128 KB (對比DSPIC33FJ64MC804-I/PT)
設計說明
Decouple VDD pins 18 and 42 with a 10 uF X5R ceramic plus a 0.1 uF X7R placed within 5 mm of the package. Tie the VCAP pin 43 to a second 10 uF + 0.1 uF pair; the on-chip regulator generates the internal 1.8 V core rail and the VCAP capacitance must not fall below 1 uF effective. AVDD pin 19 should be tied to VDD through a ferrite bead to reduce ADC noise injection, and AVSS pin 20 should be joined to the digital ground plane at a single point beneath the IC. Estimated: at 40 MIPS full-load current consumption is approximately 60 mA per the datasheet DC characteristics, so a regulator with at least 200 mA headroom is recommended.
The TQFP-44 package has a thermal resistance theta-JA of approximately 45 C/W on a standard 4-layer 1-oz copper PCB. At 60 mA active current and 3.3 V supply, dissipation is 0.2 W, which raises junction temperature by 9 C above ambient - well within the 125 C limit. However, when an external ADC reference or analog front-end shares the same die, increase PCB copper area beneath the exposed pad pattern by at least 25 mm^2 to keep junction temperature below 100 C at +85 C ambient.
Route the analog traces (AN0-AN7, VREF+, VREF-) away from the PWM and digital switching signals. Place the ICSP programming header on a separate 5-pin 0.1-inch header accessible without removing the IC, and ensure the MCLR pull-up is at least 10 kohm to avoid spurious resets during ISP programming. Keep crystal traces short (less than 10 mm) and surround them with a ground guard ring to reduce EMI pickup on the OSC1/OSC2 pins.
Do not leave the VCAP pin floating - the internal voltage regulator will not start up and the device will appear dead. Always select a crystal with ESR below 80 ohm or use the internal FRC for development builds to avoid oscillator-startup failures. When migrating from the PIC24HJ family, note that the ADC configuration registers have a different layout and code written for PIC24HJ will require register-level updates. Estimated: The ICSP programming voltage on MCLR is 13V and must not exceed 14V or the ICSP/ICD interface will be permanently damaged.
合規資訊
RoHS compliant per Microchip material declaration. Not AEC-Q100 qualified - select DSPIC33FJ128MC804T-H/PT or dsPIC33EV family for automotive. REACH SVHC-free and halogen-free mold compound per Microchip sustainability report 2024.