DSPIC33EP128MU502T-I/MM - 16-bit DSC 128KB Flash QFN-28 | Microchip
部品番号: DSPIC33EP128MU502T-I/MM ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $1.81 | $1.81 |
| 10 | $1.55 | $15.50 |
| 100 | $1.2 | $120.00 |
| 500 | $0.9 | $450.00 |
| 1,000 | $0.55 | $550.00 |
DSPIC33EP128MU502T-I/MM 概要
A Digital Signal Controller combines the compute architecture of a digital signal processor (DSP) with the peripheral set and ease of use of a microcontroller (MCU). In the product hierarchy, the dsPIC33EP family sits within the broader dsPIC33 line of 16-bit DSCs, occupying the space between general-purpose MCUs and dedicated DSPs. This makes DSCs a natural fit for embedded control loops, digital power conversion, and motor control where fast math and deterministic interrupt response are required.
Key features include a 16-bit modified Harvard core with DSP engine supporting single-cycle MAC and 40-bit accumulators, 12-bit ADC capability, and a rich peripheral mix of UART, SPI, I2C, and PWM outputs. The MU-series silicon distinguishes itself with high-speed peripherals suited to digital power and motion applications, and the low pin count QFN-28 footprint conserves PCB area in compact designs.
Architecturally, the dsPIC33EP core executes most instructions in a single cycle at up to 70 MIPS from a 3.0V to 3.6V supply, with hardware looping, bit-reversed addressing, and dual operand fetch that accelerate DSP kernels such as FIR filters, PID loops, and transform-based algorithms.
Typical applications include brushless DC and PMSM motor control, digital power supplies and LED drivers, sensor signal conditioning, and general embedded control requiring DSP-class math in a small package.
When designing, budget flash and RAM carefully: 128 KB flash and 16 KB RAM are ample for control loops but can be tight for complex protocol stacks; plan pin multiplexing on the 28-pin QFN early, since RPx remappable pins are shared among communication peripherals.
This page synthesizes distributor stock data, drop-in family alternatives, pricing tiers, and practical design notes not found in the manufacturer datasheet.
ドロップイン代替品: DSPIC33EP128MU502T-I/MM — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: DSPIC33EP128MU502T-I/MM （同一形状・フットプリント） — 相違点: Operating Temperature, Package, ADC Resolution, Analog Peripherals, Communication Interfaces.
クイック比較ツール — 並列比較する代替部品を選択:
DSPIC33EP128MC502T-I/MM
✅ ドロップイン📋 参考代替品（カタログ未掲載）
DSPIC33EP128MC202T-E/MM
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$3.41 / 個
データシートを見る →DSPIC33EP256MU502T-I/MM
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
DSPIC33EP64MU502T-I/MM
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
DSPIC33EP128GP502T-I/MM
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$2.68 / 個
データシートを見る →DSPIC33EP128MU502T-I/MM 最大定格＆電気的特性
| Core Architecture | 16-bit dsPIC33EP DSC |
| Max CPU Speed | 70 MIPS |
| Program Memory (Flash) | 128 KB (43K x 24) |
| RAM | 16 KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| ADC Resolution | 12-bit |
| 動作温度 | -40C to +85C (I grade) |
| パッケージ | 28-QFN-S 6x6 mm (MM) |
| 実装タイプ | Surface Mount |
| Product Type | Digital Signal Controller (DSC) |
| Communication Interfaces | UART, SPI, I2C |
| Timers/PWM | Timers and PWM outputs (see datasheet for count) |
| Packaging Suffix | -T = Tape and Reel |
| Product Family | dsPIC33EP (MU series) |
| ピン数 | 28 |
DSPIC33EP128MU502T-I/MM ピン構成
| ピン 1 | MCLR — Master clear reset (active low), programming voltage input |
| ピン 2 | AN0/VREF+/RA0 — Analog input 0 / positive ADC reference / port A bit 0 |
| ピン 3 | AN1/VREF-/RA1 — Analog input 1 / negative ADC reference / port A bit 1 |
| ピン 4 | PGD/AN2/RB0 — ICSP data, analog input 2, remappable digital I/O RB0 |
| ピン 5 | PGC/AN3/RB1 — ICSP clock, analog input 3, remappable digital I/O RB1 |
| ピン 6 | AN4/RB2 — Analog input 4 / remappable digital I/O RB2 |
| ピン 7 | AN5/RB3 — Analog input 5 / remappable digital I/O RB3 |
| ピン 8 | VSS — Ground reference |
| ピン 9 | OSC1/CLKI/RA2 — Crystal oscillator input / external clock input / RA2 |
| ピン 10 | OSC2/CLKO/RA3 — Crystal oscillator output / clock output / RA3 |
| ピン 11 | SOSCI/RP,ANx — Secondary oscillator input / remappable RPx I/O (see PPS table) |
| ピン 12 | SOSCO/RP,ANx — Secondary oscillator output / remappable RPx I/O (see PPS table) |
| ピン 13 | RPx/CNx — Remappable digital I/O (see Peripheral Pin Select table) |
| ピン 14 | RPx/CNx — Remappable digital I/O (see Peripheral Pin Select table) |
| ピン 15 | RPx/CNx — Remappable digital I/O (see Peripheral Pin Select table) |
| ピン 16 | RPx/CNx — Remappable digital I/O (see Peripheral Pin Select table) |
| ピン 17 | RPx/CNx — Remappable digital I/O (see Peripheral Pin Select table) |
| ピン 18 | RPx/CNx — Remappable digital I/O (see Peripheral Pin Select table) |
| ピン 19 | VDD — Positive power supply (3.0 V to 3.6 V) |
| ピン 20 | RPx/CNx — Remappable digital I/O (see Peripheral Pin Select table) |
| ピン 21 | RPx/CNx — Remappable digital I/O (see Peripheral Pin Select table) |
| ピン 22 | RPx/CNx — Remappable digital I/O (see Peripheral Pin Select table) |
| ピン 23 | RPx/CNx — Remappable digital I/O (see Peripheral Pin Select table) |
| ピン 24 | ANx/RPx — Analog input / remappable digital I/O (see PPS table) |
| ピン 25 | ANx/RPx — Analog input / remappable digital I/O (see PPS table) |
| ピン 26 | ANx/RPx — Analog input / remappable digital I/O (see PPS table) |
| ピン 27 | VSS — Ground reference |
| ピン 28 | VDD — Positive power supply (3.0 V to 3.6 V) |
主な用途
DSPIC33EP128MU502T-I/MM の用途: 6 件s: Brushless DC / PMSM Motor Control, Digital Power Supplies and LED Drivers, Sensor Signal Conditioning and DAQ, Embedded Control and Automation Nodes, Audio and Signal Processing Peripherals, Portable and Battery-Powered Instruments.
Brushless DC / PMSM Motor Control
The DSPIC33EP128MU502T-I/MM fits sensorless and sensored BLDC/PMSM drive designs because its 70 MIPS 16-bit core with single-cycle MAC executes FOC (field-oriented control) current loops well within PWM periods, while the MU-series 12-bit ADC samples phase currents and bus voltage synchronously with PWM. The remappable RPx pins let designers route complementary PWM outputs and quadrature encoder inputs exactly where the 28-pin QFN layout needs them. In a typical topology the controller sits between a gate driver and current-shunt amplifiers, generating center-aligned PWM with hardware dead time; the benefit is deterministic, low-jitter control at low cost and in a 6x6 mm footprint suitable for integrated motor-drive PCBs.
おすすめ
Digital Power Supplies and LED Drivers
For digitally controlled AC-DC and DC-DC converters, the DSPIC33EP128MU502T-I/MM provides the 12-bit ADC bandwidth and high-resolution PWM needed to close voltage and current loops at switching frequencies common in modern power stages. The MU-series peripherals support synchronous ADC sampling tied to the PWM time base, minimizing control-loop delay, while 70 MIPS headroom accommodates nonlinear compensators and protection routines (over-current, over-voltage) executed between switching cycles. Placed between a feedback divider and gate-driver inputs, the DSC replaces analog compensators with firmware, enabling programmable soft-start, fault logging, and adaptive tuning; the trade-off is firmware development effort versus a fixed-function analog controller.
おすすめ
Sensor Signal Conditioning and DAQ
The DSPIC33EP128MU502T-I/MM suits compact sensor-front-end boards because its 12-bit ADC, DMA, and DSP engine (FIR/IIR filters, single-cycle MAC) can digitize, filter, and decimate signals from strain gauges, thermistors, and accelerators without an external DSP. Running at 70 MIPS with 16 KB RAM, it buffers sampled streams while running a communication stack over UART, SPI, or I2C to a host. In a typical chain, sensor outputs feed an instrumentation amplifier into the ADC; the DSC applies calibration and filtering in firmware, then transmits scaled results. This consolidation cuts BOM cost and board area versus a discrete MCU-plus-DSP approach, though designers must respect the 3.0V-3.6V supply range for analog accuracy.
おすすめ
Embedded Control and Automation Nodes
General industrial control nodes benefit from the DSPIC33EP128MU502T-I/MM's balance of DSP throughput and microcontroller peripherals: 128 KB flash holds ladder-logic-like control code, protocol stacks, and bootloaders, while UART/SPI/I2C interfaces link drives, displays, and network modules. The industrial -40C to +85C rating tolerates panel and cabinet environments, and the QFN-28 6x6 mm package fits dense I/O boards. Typical use is as a local motion or process controller inside a larger automation system, handling deterministic loops locally while reporting to a PLC or gateway. Designers should plan PPS pin mapping early because the 28-pin package multiplexes many functions, and reserve flash headroom for field firmware updates.
おすすめ
Audio and Signal Processing Peripherals
With a 16-bit DSP engine, hardware multiply-accumulate, and 40-bit accumulators, the DSPIC33EP128MU502T-I/MM can implement audio preprocessing tasks such as gain staging, dynamic range compression, simple equalization, and tone generation at audio sample rates, using its SPI or UART ports to interface codecs or amplify-and-drive stages. At 70 MIPS there is ample cycle budget for several cascaded biquad filters per channel at 48 kHz sampling. The device is not a high-fidelity audio DSP replacement, but for embedded products where sound effects, feedback suppression, or acoustic feedback paths accompany control functions, it consolidates both tasks in one 28-pin QFN, reducing system complexity and cost.
おすすめ
Portable and Battery-Powered Instruments
Handheld meters, testers, and portable analyzers use the DSPIC33EP128MU502T-I/MM where measurement math (RMS, FFT, filtering) meets display and user-interface duties. The 3.0V-3.6V supply matches a single lithium cell with an LDO, and the 70 MIPS core completes heavy per-sample processing quickly so the CPU can idle between measurements to save power. The 12-bit ADC digitizes front-end signals directly, and 128 KB flash stores calibration tables and multi-language UI strings. In a typical instrument, the DSC reads the analog front end, computes results, and drives an LCD over SPI; the compact QFN-28 keeps the main board small for handheld enclosures.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: DSPIC33EP128MU502T-I/MM — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | DSPIC33EP128MC502T-I/MM | DSPIC33EP256MU502T-I/MM | DSPIC33EP64MU502T-I/MM | DSPIC33EP128GP502T-I/MM |
|---|---|---|---|---|---|
| Package | 28-QFN-S 6x6 mm (MM) | 28-QFN-S 6x6 mm - same | 28-QFN-S 6x6 mm - same | 28-QFN-S 6x6 mm - same | 28-QFN-S 6x6 mm - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Max Speed | 16-bit DSC, 70 MIPS | 16-bit DSC, 70 MIPS | 16-bit DSC, 70 MIPS | 16-bit DSC, 70 MIPS | 16-bit DSC, 70 MIPS |
| Flash | 128 KB (43K x 24) | 128 KB | 256 KB (2x) | 64 KB (0.5x) | 128 KB |
| Peripheral Series | MU (high-speed ADC/PWM) | MC (motor control) | MU - same | MU - same | GP (general purpose) |
| Temperature Grade | -I (-40C to +85C) | -I (-40C to +85C) | -I (-40C to +85C) | -I (-40C to +85C) | -I (-40C to +85C) |
| Packaging | Tape & Reel (-T) | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel |
主な差別化要因
- MU-series high-speed ADC/PWM peripheral mix （vs DSPIC33EP128MC502T-I/MM)
- Flash upgrade path without PCB change （vs DSPIC33EP256MU502T-I/MM)
- Tape-and-reel supply format （vs DSPIC33EP128MC502T-I/MM)
設計ノート
The 28-QFN-S 6x6 mm package has an exposed thermal pad on the underside that must be soldered to a grounded copper pour for reliable grounding and heat dissipation. Place 100 nF ceramic decoupling capacitors within 2 mm of both VDD pins (pins 19 and 28) and one bulk 4.7-10 uF capacitor near the supply entry. Keep the crystal traces on OSC1/OSC2 short and guard them with ground, and keep analog traces to ANx pins away from PWM switching nodes to protect 12-bit ADC accuracy.
Because most pins on the 28-pin device are multiplexed through Peripheral Pin Select (PPS), a common failure is forgetting to map a UART or PWM output in firmware before expecting it on a physical pin - outputs are configured by writing RPx registers, and input mappings are separate from output mappings. Also note that MCLR (pin 1) must be pulled up (typically 10 kOhm) for reliable power-on; leaving it floating causes spurious resets. Reserve flash space for a bootloader if field updates are planned, since 128 KB fills quickly with stacks plus diagnostics.
Supply the device from a clean 3.0V-3.6V rail; the dsPIC33EP family is not 5V tolerant, so level-shift any 5V signals (e.g., legacy sensor outputs) at the pins. Estimated: typical core current is in the tens of mA at 70 MIPS (see the manufacturer datasheet electrical specifications table for exact figures); size your regulator with margin for peak switching currents when the ADC and PWM peripherals run concurrently. Sequencing is not required, but brown-out should be enabled in configuration words for robustness in industrial environments.
コンプライアンス情報
Compliance certificates for this specific MPN were not present in the provided web data. Download Microchip's environmental compliance documentation from microchip.com for formal RoHS/REACH evidence.
