DSPIC33EP128MC502-I/SP - 70MIPS 16-bit DSC 128KB Flash | Microchip
MPN： DSPIC33EP128MC502-I/SP ✓ 啟用中DSPIC33EP128MC502-I/SP 概覽
A digital signal controller combines the computational architecture of a microcontroller with the DSP capability of a digital signal processor. In the power management hierarchy, the dsPIC33E family sits above general-purpose 16-bit MCUs by adding a DSP engine, barrel shifter, modulo and bit-reversed addressing, and single-cycle MAC instructions, making it a natural fit in the hierarchy: DSC -> digital signal controller -> embedded processor -> semiconductor.
Key features include a 16-bit pipelined core running at up to 70 MIPS (60 MHz Tcy referenced in distributor listings), 128 KB self-programmable FLASH with ECC, and the MC-class peripheral set: a Motor Control PWM (MCPWM) module, dual on-chip operational amplifiers, analog comparators, a 10/12-bit ADC, and CAN 2.0B, which together eliminate many external analog components in motor-control designs.
Technically, the dsPIC33E core uses a modified Harvard architecture with a 24-bit instruction word, two 40-bit accumulators, and hardware DSP multiply-accumulate for filter and control-loop execution. In-circuit and in-application programming (ICSP/ICAP), IEEE 1149.2-compatible JTAG boundary scan, and two program/data breakpoints support development and field updates.
Typical applications include brushless DC and PMSM motor control (FOC sensorless drives), digital power supplies (LLC, PFC), industrial automation nodes with CAN connectivity, and smart sensors where the integrated op amps buffer current-sense signals directly. The 28-pin SPDIP package suits through-hole prototyping and legacy industrial boards.
Design consideration: connect a low-ESR capacitor to the VCAP/VDDCORE pin for the internal core regulator, and route PGECx/PGEDx pairs in matched pairs for ICSP - PGEC2 must pair with PGED2.
This page synthesizes distributor pricing, drop-in alternatives, pinout, and practical design notes not consolidated in the manufacturer datasheet.
直接替換替代品，適用於 DSPIC33EP128MC502-I/SP — 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： DSPIC33EP128MC502-I/SP （相同外形與佔位） — 差異在於 Package, Operating Temperature, Supply Voltage, Program Memory (Flash), Programming Interface.
DSPIC33EP64MC502-I/SP
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →DSPIC33EP256MC502-I/SP
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPIC33EP32MC502-I/SP
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPIC33EP128MC502-H/SP
✅ 直接替換聯絡詢價
查看資料表 →DSPIC33EP128MC202-I/SP
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →DSPIC33EP128MC502-I/SP 最大額定值與電氣特性
| Core | dsPIC33E 16-bit DSC core |
| Performance | 70 MIPS |
| CPU Frequency | 60 MHz |
| Program Memory | 128 KB (43K x 24) FLASH |
| RAM | 16 KB |
| Operating Voltage Range | 3.0 V to 3.6 V |
| 封裝 | 28-pin SPDIP |
| 安裝類型 | Through Hole |
| PWM Module | High-speed Motor Control PWM (MCPWM) |
| On-chip Op Amps | Yes |
| Comparators | Yes |
| CAN | CAN 2.0B |
| Peripherals (per listing) | MCPWM, OpAmps, Comparators, PTG, CAN |
| Debug/Programming | ICSP/ICAP, JTAG (IEEE 1149.2 compatible) |
| 工作溫度 | -40C to +85C (I grade) |
| Data Points/Breakpoints | Two program and two complex data breakpoints |
DSPIC33EP128MC502-I/SP 腳位配置
| 腳位 1 | MCLR — Master clear reset (active low), programming voltage input |
| 腳位 2 | AN0/VREF+/CN2B/RB0 — Analog input 0 / ADC positive voltage reference / port RB0 |
| 腳位 3 | AN1/VREF-/CN3B/RB1 — Analog input 1 / ADC negative voltage reference / port RB1 |
| 腳位 4 | AN2/SS1/CN4B/RB4 — Analog input 2 / SPI slave select / port RB4 |
| 腳位 5 | AN3/INDX/CN5B/RB5 — Analog input 3 / encoder index input / port RB5 |
| 腳位 6 | VSS — Ground reference |
| 腳位 7 | OSC1/CLKI/CN7/RA2 — Oscillator crystal input / external clock input / port RA2 |
| 腳位 8 | OSC2/CLKO/CN6/RA3 — Oscillator crystal output / clock output / port RA3 |
| 腳位 9 | VDD — Positive supply (3.0 V to 3.6 V) |
| 腳位 10 | PGED1/AN4/CN6B/RB6 — Programming data 1 / analog input 4 / port RB6 |
| 腳位 11 | PGEC1/AN5/CN7B/RB7 — Programming clock 1 / analog input 5 / port RB7 |
| 腳位 12 | TDI/RB8 — JTAG test data input / port RB8 |
| 腳位 13 | TDO/RB9 — JTAG test data output / port RB9 |
| 腳位 14 | VSS — Ground reference |
| 腳位 15 | VCAP/VDDCORE — Internal core regulator capacitor connection - low-ESR cap required |
| 腳位 16 | RP15/RB15 — Remappable peripheral pin 15 / port RB15 |
| 腳位 17 | RP14/RB14 — Remappable peripheral pin 14 / port RB14 |
| 腳位 18 | RP13/RB13 — Remappable peripheral pin 13 / port RB13 |
| 腳位 19 | RP12/RB12 — Remappable peripheral pin 12 / port RB12 |
| 腳位 20 | VDD — Positive supply (3.0 V to 3.6 V) |
| 腳位 21 | RP11/RB11 — Remappable peripheral pin 11 / port RB11 |
| 腳位 22 | RP10/RB10 — Remappable peripheral pin 10 / port RB10 |
| 腳位 23 | RP2/RB2 — Remappable peripheral pin 2 / port RB2 |
| 腳位 24 | RP3/RB3 — Remappable peripheral pin 3 / port RB3 |
| 腳位 25 | RP4/RA0 — Remappable peripheral pin 4 / port RA0 |
| 腳位 26 | RP5/RA1 — Remappable peripheral pin 5 / port RA1 |
| 腳位 27 | AVSS — Analog ground reference |
| 腳位 28 | AVDD — Analog positive supply |
典型應用
DSPIC33EP128MC502-I/SP 適用於 6 應用s: BLDC / PMSM Motor Control (FOC), Digital Power Supplies (LLC / PFC), Industrial Automation CAN Nodes, Power Inverters and UPS, Electric Power Steering and Automotive Auxiliary Drives, Through-Hole Prototyping and Education.
BLDC / PMSM Motor Control (FOC)
The DSPIC33EP128MC502-I/SP fits field-oriented control drives because its 70 MIPS DSP core executes the PI and Clarke/Park transforms with single-cycle MAC instructions, while the Motor Control PWM (MCPWM) module generates complementary gate signals with dead-time insertion. The integrated op amps buffer low-side shunt current signals directly, and the on-chip comparators support cycle-by-cycle overcurrent protection without external amplifier ICs, cutting BOM cost and board area. In a typical topology the DSC reads phase currents through its ADC, computes rotor position (sensorless via back-EMF observer or with an encoder input), and updates PWM duty cycles every PWM period. The 128 KB FLASH accommodates a full FOC stack plus CAN communication and fault logs, and the 16 KB RAM supports control-loop state buffering.
推薦
Digital Power Supplies (LLC / PFC)
The DSPIC33EP128MC502-I/SP suits digital power conversion because its high-speed PWM supports phase-shifted and resonant topologies, and the 70 MIPS core closes voltage- and current-loop compensators with sample rates well above the converter bandwidth. The ADC with multiple channels samples output voltage, input current, and temperature synchronously with the PWM period, while on-chip analog comparators provide hardware overcurrent trip protection faster than any software loop. In an LLC converter, the DSC implements frequency control plus burst mode; in a PFC front end, it performs average current-mode control with input-feedforward. The CAN interface enables power-supervisory communication in server and telecom rectifier racks. The 3.0V-3.6V supply and industrial temperature range fit standard auxiliary bias rails.
推薦
Industrial Automation CAN Nodes
The DSPIC33EP128MC502-I/SP integrates CAN 2.0B, making it a compact node controller for factory automation networks where sensors, actuators, and drives exchange deterministic messages. The 70 MIPS core handles CAN stack processing, application logic, and protocol translation simultaneously, while the Peripheral Trigger Generator (PTG) automates routine sequenced tasks offload-free. The integrated op amps condition analog sensor signals (pressure, position, current) before ADC sampling, and the 128 KB FLASH retains firmware plus calibration tables and device identification data. The industrial -40C to +85C rating covers unconditioned factory floors, and the through-hole 28-pin SPDIP package simplifies serviceable DIN-rail module designs where field replacement by technicians is expected.
推薦
Power Inverters and UPS
For single-phase inverters and online UPS systems, the DSPIC33EP128MC502-I/SP generates sinusoidal PWM through its MCPWM module, closes the output-voltage regulation loop at high sample rates using the 70 MIPS core, and monitors battery and bus conditions through its ADC channels. The on-chip comparators implement fast hardware protection for overcurrent and shoot-through events, a critical requirement in power conversion where microseconds matter. CAN connectivity supports parallel-inverter current sharing and supervisory communication in rack-mounted UPS systems. The 128 KB FLASH stores compensation tables, battery-charge profiles, and logging firmware simultaneously, while the industrial temperature grade and internal core regulator simplify derating analysis in sealed enclosures with limited airflow.
推薦
Electric Power Steering and Automotive Auxiliary Drives
Microchip's dsPIC33E family targets automotive auxiliary motor drives such as electric power steering pumps, radiator fans, throttle actuators, and fuel pumps. The DSPIC33EP128MC502-I/SP provides the dual on-chip op amps required for three-shunt or single-shunt phase-current sensing in sensorless FOC drives, and the MCPWM module supplies the dead-time-controlled gate signals for the inverter bridge. The 70 MIPS core executes position-estimation observers at PWM frequency, and its DSP MAC instructions keep the control loop deterministic. The 128 KB FLASH holds application firmware plus ASIL-supporting diagnostics routines, and CAN 2.0B connects the drive to the vehicle body controller. Note this commercial-grade SKU should be reviewed against the automotive-qualified family variants for safety-critical platforms.
推薦
Through-Hole Prototyping and Education
The 28-pin SPDIP through-hole package makes the DSPIC33EP128MC502-I/SP a strong choice for breadboard prototyping, university embedded-systems and motor-control labs, and legacy industrial equipment with socketed DIP components. Students and engineers can explore DSP techniques - FIR filtering, FFT, FOC - on a 70 MIPS core without surface-mount assembly equipment. The dsPIC33EP family is supported by Microchip's free MPLAB X IDE and low-cost in-circuit debuggers, and SEGGER tooling also lists support for this device. The ICSP interface uses accessible PGEC/PGED pin pairs, and the datasheet documents two program and two complex data breakpoints plus JTAG boundary scan, giving learners exposure to professional debugging workflows. The industrial -40C to +85C grade tolerates bench abuse.
推薦
推薦產品摘要
工程參考資料，適用於 DSPIC33EP128MC502-I/SP — 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 | DSPIC33EP64MC502-I/SP | DSPIC33EP256MC502-I/SP | DSPIC33EP128MC502-H/SP | DSPIC33EP128MC202-I/SP |
|---|---|---|---|---|---|
| Package | 28-pin SPDIP | 28-pin SPDIP - same | 28-pin SPDIP - same | 28-pin SPDIP - same | 28-pin SPDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Performance | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Program Memory (FLASH) | 128 KB (43K x 24) | 64 KB | 256 KB | 128 KB | 128 KB |
| On-chip Op Amps | Yes | Yes | Yes | Yes | No |
| Motor Control PWM | Yes (MCPWM) | Yes (MCPWM) | Yes (MCPWM) | Yes (MCPWM) | Yes (MCPWM) |
| CAN 2.0B | Yes | Yes | Yes | Yes | Yes |
| Temperature Grade | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | H grade (high-temp variant) | -40C to +85C (I) |
| Mounting | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
主要差異化特點
- Integrated on-chip op amps (對比DSPIC33EP128MC202-I/SP)
- Largest FLASH in 28-pin SPDIP MC50x family (對比DSPIC33EP64MC502-I/SP)
- Industrial I-grade through-hole availability (對比DSPIC33EP128MC502-H/SP)
設計說明
The VCAP/VDDCORE pin powers the internal core regulator. Connect a low-ESR ceramic capacitor (per the manufacturer datasheet value, typically in the microfarad range) directly from VCAP to VSS with a short, wide trace. Omitting this capacitor or using a high-ESR part causes core-voltage dips during high-load 70 MIPS execution and can manifest as erratic resets - especially in FOC motor drives where the CPU load changes step-wise at each PWM update.
For ICSP programming, the device offers multiple PGECx/PGEDx pairs (e.g., PGEC1/PGED1 on pins 11/10). You must use them as matched pairs: if ICSPCLK uses PGEC2, then ICSPDAT must use PGED2 - do not mix pairs. Also connect all VDD and VSS pins (pins 6, 9, 14, 20) as recommended in the NSDSP programming notes for this exact device, and keep the MCLR trace short with the standard 10k pull-up and programming-connector provision for field firmware updates.
Do not assume the supply range beyond 3.0V-3.6V: the dsPIC33EP generation is a 3.3V-only family, and 5V microcontroller habits (direct sensor hookup) will damage I/O. Partition analog layout: route AVDD (pin 28) through an RC filter from VDD and star-ground AVSS (pin 27) so switching noise from the MCPWM-driven inverter does not corrupt ADC current-sense readings. Confirm the exact capacitor value for VCAP and the 32 kHz oscillator requirements against the current Microchip datasheet revision before release.
合規資訊
Active production part; RoHS/lead-free per distributor listings (DigiKey, Mouser). REACH, halogen-free and conflict-minerals declarations not present in verified data - confirm via Microchip's environmental compliance page.
