DSPIC33FJ32MC102-I/SO - 16-bit DSC 16 MIPS 32KB | Microchip
MPN： DSPIC33FJ32MC102-I/SO ✓ 啟用中DSPIC33FJ32MC102-I/SO 概覽
A digital signal controller combines the compute power of a DSP core with the peripheral integration and ease of use of a microcontroller, sitting in the product hierarchy between general-purpose MCUs (such as the PIC18 family) and full DSP processors. Within Microchip's portfolio, the dsPIC33F line targets real-time embedded control where fast multiply-accumulate operations drive motor and power algorithms.
Key features of this device include the Motor Control PWM (MCPWM) module for three-phase inverter drive, the Charge Time Measurement Unit (CTMU) for capacitive touch and precise time measurement, and Peripheral Pin Select (PPS) which allows many digital peripherals to be mapped flexibly to any of the remappable I/O pins. The core runs from a 3.0V to 3.6V supply at up to 32MHz external clock, and the device provides up to three external interrupts, selectable open-drain outputs, and 5V-tolerant input pins.
Architecturally, the 16-bit modified Harvard core with DSP engine supports single-cycle MAC operations, making FOC (field-oriented control), PID loops, and digital filtering efficient even at modest clock rates. On-chip Flash self-programming supports field firmware updates.
Typical applications include Brushless DC and permanent-magnet synchronous motor drives, switching power supplies and digital power conversion, and sensor-based embedded systems benefiting from the CTMU.
Design consideration: the 3.0V to 3.6V supply range requires a clean 3.3V rail; decouple VDD pins per the manufacturer datasheet and use the internal PLL configuration options to balance MIPS against EMI.
This page adds value beyond the manufacturer datasheet by consolidating distributor pricing tiers, same-package drop-in alternatives, and practical design notes in one citable reference.
直接替換替代品，適用於 DSPIC33FJ32MC102-I/SO — 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： DSPIC33FJ32MC102-I/SO （相同外形與佔位） — 差異在於 Package, Operating Temperature, Core Architecture, I/O Sink/Source Current, RoHS Status.
DSPIC33FJ32MC102-E/SO
✅ 直接替換聯絡詢價
查看資料表 →DSPIC33FJ32MC101T-I/SO
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →DSPIC33FJ32MC101-E/SO
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →DSPIC33FJ32MC202-I/SO
✅ 直接替換📋 參考替代品（不在目錄中）
DSPIC33FJ16MC102-I/SO
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →DSPIC33FJ32MC102-I/SO 最大額定值與電氣特性
| Core Architecture | 16-bit dsPIC33F DSC core |
| Performance | 16 MIPS |
| Program Memory (Flash) | 32KB (11K x 24) |
| Data Memory (RAM) | 2KB |
| Operating Voltage | 3.0 V to 3.6 V (3.3 V nominal) |
| 最大時脈頻率 | 32 MHz |
| 工作溫度 | -40C to +85C (industrial, -I suffix) |
| 封裝 | 28-SOIC (0.295 in / 7.50 mm width) |
| 腳位數 | 28 |
| 安裝類型 | Surface Mount |
| Terminal Form | Gull Wing |
| External Interrupts | 3 (two remappable) |
| I/O Sink/Source Current | 10 mA or 6 mA pin-specific (standard); up to 16 mA or 12 mA (non-standard VOH) |
| 5V Tolerant Pins | Yes |
| Key Peripherals | CTMU, MCPWM, PPS (Peripheral Pin Select) |
| Open-Drain Outputs | Up to 20 selectable with pull-ups |
| Temperature Grade | Industrial |
DSPIC33FJ32MC102-I/SO 28-soic (0.295 in / 7.50 mm width) 腳位配置指南
DSPIC33FJ32MC102-I/SO（28-soic (0.295 in / 7.50 mm width) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： DSPIC33FJ32MC102-I/SO.
請參閱 資料表 以查看完整腳位配置。
典型應用
DSPIC33FJ32MC102-I/SO 適用於 6 應用s: BLDC / PMSM Motor Control, Switch-Mode Power Supplies (Digital Power), Capacitive Touch Interfaces, Sensor Signal Processing and Data Acquisition, Automotive and Industrial Sub-Systems (Extended Temp Builds), Embedded Control and IoT Node Firmware Platforms.
BLDC / PMSM Motor Control
The DSPIC33FJ32MC102-I/SO is purpose-built for three-phase brushless DC and permanent-magnet synchronous motor drives. Its MCPWM module generates complementary PWM pairs with programmable dead-time, while the 16 MIPS DSP core executes field-oriented control (FOC), sensorless back-EMF algorithms, and multi-variable PID loops in real time. Peripheral Pin Select routes PWM outputs, Hall-input captures, and encoder QEA/INDX signals to optimal physical pins, simplifying PCB layout around the gate drivers. Placed upstream of a three-phase inverter with 3.3V logic-compatible gate drivers, the DSC updates control loops at PWM carrier frequency; the main trade-off is the 3.0V to 3.6V supply rail, which requires level consideration with 5V Hall sensors despite 5V-tolerant inputs.
推薦
Switch-Mode Power Supplies (Digital Power)
In digitally controlled AC-DC and DC-DC converters, the DSPIC33FJ32MC102-I/SO closes voltage- and current-mode loops in firmware using its high-speed 16-bit core and ADC-synchronized control structure. The MCPWM output drives the power stage MOSFETs through a gate driver, while the 16 MIPS throughput supports compensation-network calculations at switching frequencies of tens to hundreds of kilohertz. The CTMU additionally supports precision timing measurements for synchronization with external events. Compared to an analog controller, firmware control enables adaptive compensation and system diagnostics; the trade-off is that loop bandwidth is limited by ADC and ISR execution time, so very high-frequency converters should consider the faster GS-series parts instead.
推薦
Capacitive Touch Interfaces
The integrated Charge Time Measurement Unit (CTMU) on the MC102 variant enables low-cost capacitive touch buttons, sliders, and proximity sensing without a dedicated touch controller. The CTMU charges the sensor pad with a constant current and measures charge time, detecting the small capacitance shift caused by a finger. Combined with the 16-bit core running debouncing and drift-compensation firmware, a single 28-SOIC device can replace discrete touch ICs in appliance panels and industrial keypads. Typical layouts use 10pF to 100pF sensor capacitances with guard grounding per Microchip touch-sensing application notes. This CTMU capability is precisely what distinguishes the MC102 from the otherwise pin-compatible MC101 alternative.
推薦
Sensor Signal Processing and Data Acquisition
With its DSP engine providing single-cycle multiply-accumulate operations, the DSPIC33FJ32MC102-I/SO efficiently performs digital filtering (IIR/FIR), RMS computation, and FFT-based analysis on sampled sensor data. The 32KB Flash holds both the acquisition firmware and coefficient tables, while Peripheral Pin Select lets UART or SPI streams be mapped to the most convenient physical pins for data offload. Industrial sensors - pressure, flow, vibration - benefit from the on-chip digital filtering to reject noise before decisions are made. The 3.3V rail interfaces directly with most modern ADC front ends, and 5V-tolerant inputs simplify handshake signals from legacy 5V systems. The 2KB RAM is the main constraint for long sample buffers.
推薦
Automotive and Industrial Sub-Systems (Extended Temp Builds)
Although the -I/SO variant is rated -40C to +85C, the same die is offered as DSPIC33FJ32MC102-E/SO with an extended temperature rating, letting one PCB design serve both standard and harsh-environment builds - pump controllers, actuator drivers, and under-hood auxiliary systems. The 5V-tolerant inputs interface with industrial 5V sensor signaling, while the remappable pins absorb connector-pinout changes across product variants without respinning the PCB. Firmware benefits from the DSP core for motor commutation and from the CTMU for sensor diagnostics. Note the -E variant is a build option of the same silicon, not a different device, so validation effort is reused across the product family's temperature grades.
推薦
Embedded Control and IoT Node Firmware Platforms
As a general embedded controller, the DSPIC33FJ32MC102-I/SO offers Flash self-programming for field firmware updates, up to 20 selectable open-drain outputs with pull-ups for multi-voltage bus interfacing, and three external interrupts (two remappable) for responsive event handling. Its 28-SOIC, 7.50mm-width footprint suits compact industrial IoT nodes that combine a sensor, a small actuator, and a serial link to a gateway module. The 16 MIPS core comfortably runs communication stacks alongside control tasks, and Microchip's free MPLAB X IDE plus low-cost programmers keep tooling expense minimal. The principal limitation versus 32-bit ARM parts is the 2KB RAM, which caps buffer sizes for network stacks - plan accordingly or pair with a communication module.
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推薦產品摘要
工程參考資料，適用於 DSPIC33FJ32MC102-I/SO — 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 | DSPIC33FJ32MC102-E/SO | DSPIC33FJ32MC101T-I/SO | DSPIC33FJ32MC202-I/SO | DSPIC33FJ16MC102-I/SO |
|---|---|---|---|---|---|
| Package | 28-SOIC (7.50 mm) | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Performance | 16-bit DSC, 16 MIPS | 16-bit DSC, 16 MIPS | 16-bit DSC, 16 MIPS | 16-bit DSC, 16 MIPS | 16-bit DSC, 16 MIPS |
| Flash Program Memory | 32KB (11K x 24) | 32KB (11K x 24) | 32KB (11K x 24) | 32KB (11K x 24) | 16KB (5.5K x 24) |
| CTMU Peripheral | Yes | Yes | No | Yes | Yes |
| PWM Structure | MCPWM (motor control) | MCPWM (motor control) | MCPWM (motor control) | 2 PWM generators with independent timebases | MCPWM (motor control) |
| Operating Temperature | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C | -40C to +85C |
| Operating 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 |
主要差異化特點
- Integrated CTMU for touch sensing and precision timing (對比DSPIC33FJ32MC101T-I/SO)
- Extended temperature build option on identical silicon (對比DSPIC33FJ32MC102-E/SO)
- Dual independent PWM timebases in the newer family (對比DSPIC33FJ32MC202-I/SO)
設計說明
The DSPIC33FJ32MC102-I/SO requires a regulated 3.0V to 3.6V rail (nominal 3.3V). Use a low-dropout regulator such as a 3.3V LDO rated for at least 100 mA with 0.1uF ceramic decoupling at each VDD pin and bulk 4.7uF to 10uF at the regulator output - follow the decoupling network in the manufacturer datasheet (70000652f). Because certain input pins are 5V-tolerant but outputs swing only to 3.3V, interface with 5V systems via level-shifting on outputs or 3.3V-logic gate drivers. Exceeding 3.6V on VDD risks permanent damage; verify brownout behavior of your regulator during supply sag events.
Take full advantage of Peripheral Pin Select (PPS) before finalizing the PCB: route MCPWM outputs away from the sensitive analog ANx pins used for current-sense feedback, and group remappable RPn pins to shorten traces to gate drivers and communication transceivers. Keep the oscillator traces (OSC1/OSC2) short and guarded by ground. For motor-drive layouts, star-ground the power stage and controller, and place current-shunt filtering (RC, typically 1k/1nF class per Microchip motor-control application notes) close to the ADC input pins to protect conversion accuracy from switching noise.
Three frequent mistakes with this family: (1) Assuming fixed pin functions - UART, SPI, and many PWM pins are only available after PPS mapping in software; unmapped peripherals simply do not appear at pins. (2) Confusing MC101 and MC102 variants - only the MC102 includes the CTMU, so touch-sensing firmware will not run on MC101 drop-in substitutes. (3) Using the -I part above +85C ambient - for higher-temperature environments specify the -E suffix (e.g., DSPIC33FJ32MC102-E/SO). Also verify configuration words (oscillator, watch-dog, PWM pin mode) are set correctly at programming time; incorrect osc settings are the most common bring-up failure.
合規資訊
Per-part RoHS/REACH/lead-free certificates must be confirmed from the Microchip product page or distributor certificate of compliance; the provided web data did not include explicit compliance statements for this exact MPN. Not an AEC-Q100 automotive-qualified part number.
