DSPIC33EP256MC202T-I/SO - 16-bit 70 MIPS DSC, 256KB Flash | Microchip
料号： DSPIC33EP256MC202T-I/SO ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.1 | $5.10 |
| 10 | $4.62 | $46.20 |
| 100 | $4.15 | $415.00 |
| 500 | $3.78 | $1,890.00 |
| 1,000 | $3.42 | $3,420.00 |
DSPIC33EP256MC202T-I/SO 概述
A digital signal controller combines the computational architecture of a microcontroller with DSP capability, sitting in the product hierarchy between a general-purpose MCU and a dedicated DSP. The dsPIC33EP family integrates a DSP engine, high-speed PWM peripherals, and advanced analog, allowing a single chip to execute both control-loop and signal-processing tasks in motor drives and power conversion systems.
Key features include the 70 MIPS 16-bit core, 256KB self-programming FLASH with ECC-class endurance, 16KB of on-chip SRAM, and connectivity peripherals spanning I2C, SPI, UART/USART, IrDA, LINbus, and QEI (quadrature encoder interface) for motor position feedback. Multiple 10-bit/12-bit ADC inputs support simultaneous analog sampling for current and voltage sensing.
Architecturally, the dsPIC33E core pairs a 16-bit MCU instruction set with DSP multiply-accumulate and barrel-shifter resources, enabling deterministic execution of PID and field-oriented control (FOC) loops. The high-resolution PWM modules are targeted at inverter, BLDC, PMSM, and power-factor-correction stages where precise dead-time control matters.
Typical applications include precision motor control (BLDC/PMSM drives, servo and stepper controllers), digital power supplies and solar inverters, and embedded industrial control nodes requiring DSP-class math without a separate DSP chip.
Design consideration: the 28-SOIC package exposes limited I/O, so plan pin multiplexing (PWM, QEI, communication ports) early, and follow Microchip's clock and power-supply decoupling guidance in the datasheet.
This page synthesizes distributor pricing tiers, drop-in family alternatives, and practical design notes beyond the raw manufacturer datasheet.
直接替换替代料： DSPIC33EP256MC202T-I/SO ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： DSPIC33EP256MC202T-I/SO （相同外形与封装尺寸） ——差异在于 Package, Operating Temperature, Core, Packaging, Program Memory (Flash).
快速对比工具——选择替代料号进行并排对比：
DSPIC33EP128MC202-I/SO
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.92 / 个
查看数据手册 →DSPIC33EP64MC202-I/SO
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$0.13 / 个
查看数据手册 →DSPIC33EP32MC202-I/SO
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.98 / 个
查看数据手册 →DSPIC33EP128GP502-I/SO
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DSPIC33EP128MC502-I/SS
✅ 直接替换✓ 有现货
$2.55 / 个
查看数据手册 →DSPIC33EP256MC202T-I/SO 最大额定值与电气特性
| Core Processor | dsPIC33E (16-bit DSC core) |
| Core Size | 16-bit |
| Speed | 70 MIPs |
| Program Memory Type | FLASH |
| Program Memory Size | 256KB (85.5K x 24) |
| RAM Size | 16KB |
| Connectivity | I2C, IrDA, LINbus, QEI, SPI, UART/USART |
| ADC Resolution | 10-bit / 12-bit |
| 封装 | 28-SOIC (0.295 in, 7.50 mm width) |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (I grade) |
| Supplier Device Package | 28-SOIC |
| Product Family | dsPIC 33EP |
| Product Type | Digital Signal Controller (DSC) / Microcontroller IC |
| Packaging | Tape & Reel (T suffix) |
DSPIC33EP256MC202T-I/SO 28-soic 引脚配置指南
DSPIC33EP256MC202T-I/SO（28-soic 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： DSPIC33EP256MC202T-I/SO.
请参阅 数据手册 以查看完整引脚配置。
典型应用
DSPIC33EP256MC202T-I/SO 适用于 6 应用s: BLDC/PMSM Motor Control, Digital Power Supplies and Inverters, Industrial Automation Nodes, Embedded DSP Signal Processing, Automotive-adjacent and E-mobility Subsystems, IoT Edge Sensing and Smart Devices.
BLDC/PMSM Motor Control
The DSPIC33EP256MC202T-I/SO fits BLDC and PMSM drives because its 70 MIPS dsPIC33E core executes field-oriented control (FOC) loops with headroom for speed ramps and protection logic, while the QEI peripheral decodes quadrature encoder feedback for rotor position. The high-speed PWM modules generate complementary three-phase outputs with programmable dead time, and the 12-bit ADC samples phase currents for closed-loop torque control. Placed as the single controller in a 28-SOIC footprint, it eliminates a separate DSP chip; the trade-off versus larger 64-pin family members is reduced I/O, so pin multiplexing of PWM, encoder, and communication pins must be planned early in the schematic.
推荐
Digital Power Supplies and Inverters
In digital power supplies, solar micro-inverters, and power-factor-correction stages, the DSPIC33EP256MC202T-I/SO provides the deterministic control needed for voltage-mode and current-mode loops. The 70 MIPS core closes control loops at tens of kHz with DSP multiply-accumulate throughput, the 12-bit ADC monitors output voltage and inductor current, and the high-speed PWM supports phase-shifted and complementary topologies with fine duty-cycle resolution. Firmware for soft-start, fault handling, and telemetry fits comfortably in the 256KB FLASH with the 16KB RAM supporting buffering for serial telemetry. Because the DSC adds no switching noise of its own, switching-frequency EMI must be managed in the gate-driver layout rather than the controller domain.
推荐
Industrial Automation Nodes
For industrial automation nodes such as sensor hubs, actuators, and small PLC I/O modules, the DSPIC33EP256MC202T-I/SO combines a 16-bit 70 MIPS processing core with the connectivity set factory equipment expects: UART/USART for MODBUS-style links, SPI and I2C for local sensors, and LINbus for cost-sensitive field buses. The industrial -40C to +85C temperature rating suits enclosures with limited cooling, and the 256KB FLASH retains margin for protocol stacks plus field firmware updates. Running control logic and communications on one 28-SOIC device simplifies BOM and certification; the trade-off is a single-controller fault domain, so watchdog and brown-out features should be enabled in configuration words.
推荐
Embedded DSP Signal Processing
The DSPIC33EP256MC202T-I/SO serves embedded DSP tasks - audio preprocessing, sensor fusion, digital filtering - where a full DSP is oversized. The dsPIC33E core provides single-cycle MAC, hardware divide, and barrel-shift operations at 70 MIPS, letting FIR/IIR filters and FFT-based analysis run deterministically without an RTOS on the 16KB RAM. The 12-bit ADC streams analog inputs for condition-monitoring and vibration-sensing products, while UART or SPI exports processed results. With 256KB of FLASH there is room for coefficient tables and multi-mode firmware. For designs needing heavier floating-point throughput, a Cortex-M4F-class device is the better architectural fit; for fixed-point 16-bit work, this DSC minimizes cost and power.
推荐
Automotive-adjacent and E-mobility Subsystems
In e-mobility subsystems - e-bike controllers, light-electric-vehicle pumps and fans, auxiliary drives - the DSPIC33EP256MC202T-I/SO delivers motor-control-grade PWM and QEI encoder input in a compact 28-SOIC. The 70 MIPS core closes FOC current loops fast enough for traction-grade feel, and the 256KB FLASH stores safety routines, fault logs, and communication stacks (LINbus, UART) used in vehicle networks. Designers should validate the I-grade -40C to +85C thermal envelope against the actual enclosure and apply derating for junction temperature, since automotive AEC-Q100-qualified variants are separate ordering codes. The trade-off versus 44/64-pin parts is I/O count, which favors simple single-motor subsystems.
推荐
IoT Edge Sensing and Smart Devices
For IoT edge devices that sense, filter, and relay data, the DSPIC33EP256MC202T-I/SO offers DSP-class preprocessing at microcontroller cost. Sensor channels feed the 12-bit ADC; the 70 MIPS core runs calibration, filtering, and threshold logic; and UART/SPI/I2C links hand data to a wireless module for upload. The industrial temperature range and 16KB RAM suit always-on monitoring products, while the 256KB FLASH accommodates OTA-style firmware slots. Because the DSC preprocesses locally, only compact results cross the radio link, cutting network energy. Designers should budget the analog front-end around the ADC input structure documented in the datasheet and enable the internal oscillator options for low-power standby between samples.
推荐
推荐产品汇总
工程参考数据： DSPIC33EP256MC202T-I/SO ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | DSPIC33EP128MC202-I/SO | DSPIC33EP64MC202-I/SO | DSPIC33EP32MC202-I/SO | DSPIC33EP128GP502-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 / Speed | dsPIC33E 16-bit, 70 MIPs | dsPIC33E 16-bit, 70 MIPs | dsPIC33E 16-bit, 70 MIPs | dsPIC33E 16-bit, 70 MIPs | dsPIC33E 16-bit, 70 MIPs |
| FLASH Program Memory | 256KB (85.5K x 24) | 128KB | 64KB | 32KB | 128KB |
| Peripheral Family (PWM focus) | MC (motor control) - high-speed PWM | MC - high-speed PWM | MC - high-speed PWM | MC - high-speed PWM | GP - general-purpose peripheral set |
| Connectivity | I2C, IrDA, LINbus, QEI, SPI, UART/USART | I2C, SPI, UART/USART, QEI | I2C, SPI, UART/USART, QEI | I2C, SPI, UART/USART, QEI | I2C, SPI, UART/USART |
| Operating Temperature Grade | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) | -40C to +85C (I) |
| Relative Cost Position | Premium (largest FLASH in family) | Lower cost than 256KB version | Lower cost | Lowest cost in family | Comparable to 128KB MC variant |
关键差异点
- Largest FLASH in the 28-pin MC family column （对比 DSPIC33EP128MC202-I/SO)
- Motor-control (MC) peripheral set rather than GP （对比 DSPIC33EP128GP502-I/SO)
- Tape-and-reel (T suffix) for production automation （对比 DSPIC33EP256MC202T-I/SS (SSOP package))
设计说明
Provide a clean 3.3V rail with local decoupling: a 0.1uF ceramic capacitor at each VDD pin pair plus one bulk 4.7uF-10uF capacitor near the device, per Microchip's dsPIC33E power-supply recommendations in the family datasheet. dsPIC33E cores are sensitive to supply droop during FLASH write operations, so avoid sharing the regulator with high-draw loads such as gate drivers without local bulk storage.
In 28-SOIC motor-control designs, keep PWM outputs to gate drivers short and route them away from the ADC sense lines feeding phase-current measurements. The 12-bit ADC accuracy degrades if switching-node transients couple into analog inputs; use dedicated analog ground returns and RC anti-alias filters on current-sense channels. Keep the MCLR pin routed to a programming header for ICSP in-circuit development.
The 28-pin package multiplexes most functions, so finalize the pin-mux map before PCB layout: QEI, UART, SPI, and PWM assignments compete for the same physical pins on the 202 pin-count variant. Also confirm the configuration-word settings (oscillator mode, watchdog, brown-out) match your hardware, since wrong oscillator configuration is the most common cause of a dsPIC33EP board failing to start.
Estimated: at typical 3.3V operation with modest I/O loading, junction dissipation of a dsPIC33EP202-class DSC stays below a few hundred milliwatts; a standard 28-SOIC land pattern with nominal copper is normally sufficient. Verify against the thermal parameters in the manufacturer datasheet when driving many heavily loaded outputs or running at maximum clock in a hot enclosure approaching the +85C ambient limit.
合规信息
Compliance data was not present in the provided distributor listings. Verify RoHS/REACH certificates on the Microchip product page for this exact ordering code before design-in.
