DSPIC33EP256GM706T-I/MR - 16-bit 70 MIPS DSC 256KB Flash | Microchip
料号： DSPIC33EP256GM706T-I/MR ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $7.48 | $7.48 |
| 10 | $6.75 | $67.50 |
| 100 | $5.9 | $590.00 |
| 500 | $5.2 | $2,600.00 |
| 1,000 | $4.65 | $4,650.00 |
DSPIC33EP256GM706T-I/MR 概述
A digital signal controller combines the compute throughput of a digital signal processor with the peripheral integration and deterministic control flow of a microcontroller. Within the power-management hierarchy of embedded systems, the DSC sits between general-purpose MCUs and dedicated DSPs, making it the preferred controller class for real-time, closed-loop control such as field-oriented motor control and digital power conversion.
Key differentiating features include 12 motor control PWM channels (MCPWM), 8 input capture and 8 output capture/compare channels, two quadrature encoder interfaces (QEI), four integrated operational amplifiers, a Charge Time Measurement Unit (CTMU) for capacitive touch and precision timing, and a Reconfigurable Peripheral Grid (PTG) for hardware-triggered sequencing. Four DMA channels offload the CPU in high-bandwidth data paths, and CAN connectivity supports industrial networking.
Architecturally, the dsPIC33EP core pairs a 16-bit modified Harvard pipeline with a DSP engine (barrel shifter, 40-bit accumulator, single-cycle MAC) clocked up to 70 MIPS. Flash-based program memory with self-programming support enables field firmware updates. The integrated op-amps can be routed internally to ADC inputs, reducing external component count in current-sense front ends for inverters and motor drives.
Typical applications include BLDC/PMSM/AC-induction motor control, digital power supplies and solar inverters, industrial automation nodes on CAN, and sensor signal conditioning using the CTMU and on-chip analog.
Design consideration: the -I suffix grade covers -40C to +85C; for extended environments select the -E variant. VQFN exposed-pad thermal performance depends on a well-soldered ground pad and via array.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： DSPIC33EP256GM706T-I/MR ——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： DSPIC33EP256GM706T-I/MR （相同外形与封装尺寸） ——差异在于 Package, Core Architecture, Packaging, Input Capture / Output Compare, Operating Temperature.
快速对比工具——选择替代料号进行并排对比：
DSPIC33EP256GM306T-I/MR
✅ 直接替换✓ 有现货
联系询价
查看数据手册 →DSPIC33EP256GM706-I/MR
✅ 直接替换✓ 有现货
$4.35 / 个
查看数据手册 →DSPIC33EP256GM706-E/MR
✅ 直接替换📋 参考替代料（不在目录中）
DSPIC33EP256GM706T-I/MR 最大额定值与电气特性
| Core | dsPIC33E 16-bit DSC core |
| Max CPU Speed | 70 MIPS |
| Flash Program Memory | 256 KB (85.5K x 24) |
| RAM | 16 KB |
| 电源电压 | 3.3 V |
| 封装 | 64-VFQFN Exposed Pad (MR) |
| MCPWM Channels | 12 |
| Input Capture / Output Compare | 8 / 8 |
| Quadrature Encoder Interfaces | 2 |
| Integrated Op-Amps | 4 |
| CTMU | Yes (Charge Time Measurement Unit) |
| PTG | Yes (Reconfigurable Peripheral Grid) |
| DMA Channels | 4 |
| CAN | Yes |
| 工作温度 | -40C to +85C (I grade) |
| 安装类型 | Surface Mount |
| Packaging Suffix (T) | Tape and Reel |
| Series | dsPIC33EP256GM706 |
DSPIC33EP256GM706T-I/MR 64-vfqfn exposed pad (mr) 引脚配置指南
DSPIC33EP256GM706T-I/MR（64-vfqfn exposed pad (mr) 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： DSPIC33EP256GM706T-I/MR.
请参阅 数据手册 以查看完整引脚配置。
典型应用
DSPIC33EP256GM706T-I/MR 适用于 6 应用s: BLDC/PMSM Motor Control, Digital Power Conversion, Industrial Automation and CAN Networking, Sensor Signal Conditioning, Embedded Control and IoT Edge Nodes, Audio and Signal Processing.
BLDC/PMSM Motor Control
The DSPIC33EP256GM706T-I/MR fits field-oriented control (FOC) motor drives because its 70 MIPS DSP engine executes single-cycle MAC operations for the current-loop math, while 12 MCPWM channels generate complementary, dead-time-controlled gate signals for three-phase inverters. The 2 QEI modules decode position from incremental encoders, and 4 on-chip op-amps amplify shunt-resistor current signals before the ADC samples them, cutting external analog components. In a typical topology the PWM peripherals run at 20 kHz, with ADC end-of-conversion triggers closing the FOC loop at the PWM rate. Trade-off: 70 MIPS sustains fast control loops but lacks floating-point hardware, so engineers use Q15 fixed-point math from Microchip's motor control libraries.
推荐
Digital Power Conversion
Digital power supplies, LLC converters, and solar micro-inverters benefit from the DSPIC33EP256GM706T-I/MR's high-resolution PWM, 70 MIPS loop bandwidth, and deterministic interrupt latency. The 12 MCPWM channels provide phase-shifted and complementary outputs with programmable dead time, while the PTG (Reconfigurable Peripheral Grid) sequences protection events in hardware without CPU involvement - critical for fast over-current shutdown. The CTMU supports precise time-based measurements used in power-stage monitoring. In a typical digital power stage the ADC samples input/output voltage each switching cycle and the DSP engine updates the duty ratio within the same period. Trade-off: 16KB RAM is ample for multiple control loops but constrains very large compensation tables or logging buffers.
推荐
Industrial Automation and CAN Networking
Factory automation nodes use the DSPIC33EP256GM706T-I/MR for sensor acquisition, actuator control, and CAN bus communication in a single chip. The on-chip CAN module connects the node to industrial networks such as CANopen or DeviceNet-style layers, while 8 input-capture and 8 output-compare channels handle timing-critical I/O like proximity-sensor pulses and valve actuation. The CTMU adds capacitive-touch or precision timing inputs for operator panels, and 4 DMA channels stream ADC data without CPU overhead. Robust industrial noise performance comes from the dsPIC33EP core's watchdog, brown-out, and code-protection features. Design consideration: external CAN transceiver and ESD protection are required on the CAN bus pins for field reliability.
推荐
Sensor Signal Conditioning
The DSPIC33EP256GM706T-I/MR integrates 4 operational amplifiers that can be routed internally to the ADC, making it a compact analog front end for sensors such as pressure bridges, thermocouples, and current shunts. The CTMU measures charge time for capacitive sensing or high-resolution time-of-flight measurements, eliminating a separate touch controller in user-interface designs. With 70 MIPS of DSP headroom, filtering (IIR/FIR), calibration, and linearization run on-chip, transmitting only processed values over UART/SPI/CAN. Typical usage: configure one op-amp per gain stage in firmware-selectable gain, sample via DMA, and apply Q15 filtering. Trade-off: the integrated op-amps offer moderate bandwidth versus external precision amplifiers, so very high-frequency signals still require external conditioning.
推荐
Embedded Control and IoT Edge Nodes
General embedded control systems leverage the DSPIC33EP256GM706T-I/MR's 256KB Flash for protocol stacks (CAN, UART, SPI, I2C), a bootloader, and application firmware with room for field updates via self-programming. The 64-VQFN exposed-pad package keeps board area small for compact edge nodes, and the 3.3V supply interfaces directly with common sensors and radios. The PTG automates simple I/O sequences while the CPU sleeps, reducing average power. Peripheral Pin Select lets firmware route digital peripherals to almost any pin, simplifying PCB routing. Trade-off: this DSC targets real-time control rather than ultra-low-power battery designs; for coin-cell applications a PIC16LF-class device with nanoWatt technology is more appropriate.
推荐
Audio and Signal Processing
The DSPIC33EP256GM706T-I/MR serves cost-sensitive digital audio and general DSP tasks: the single-cycle MAC, dual 40-bit accumulators, and barrel shifter implement FIR/IIR filters, mixing, and AGC at 70 MIPS - sufficient for multiple channels at 48 kHz sample rates. The 256KB Flash holds long coefficient tables and voice/audio assets, and 4 DMA channels move ADC/DAC sample data without CPU stalls. Typical integration pairs an external codec over I2S-style clocking or uses the remappable SPI for audio data, with processing in Q15 fixed point. Trade-off: unlike a floating-point DSP, precision-critical high-dynamic-range processing requires careful Q15/Q30 scaling; for those workloads a dedicated DSP chip remains preferable.
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推荐产品汇总
工程参考数据： DSPIC33EP256GM706T-I/MR ——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 | DSPIC33EP256GM306T-I/MR | DSPIC33EP256GM706-I/MR | DSPIC33EP256GM706-E/MR |
|---|---|---|---|---|
| Package | 64-VQFN (MR) exposed pad | 64-VQFN (MR) - same | 64-VQFN (MR) - same | 64-VQFN (MR) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Flash Memory | 256 KB | 128 KB | 256 KB | 256 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C |
| Peripherals (MCPWM/QEI/OpAmps) | 12 / 2 / 4 | 12 / 2 / 4 | 12 / 2 / 4 | 12 / 2 / 4 |
关键差异点
- Maximum Flash in the same VQFN-64 footprint （对比 DSPIC33EP256GM306T-I/MR)
- Lower cost than extended-temperature grade （对比 DSPIC33EP256GM706-E/MR)
- Production-friendly packaging （对比 DSPIC33EP256GM706-I/MR)
设计说明
The 64-VQFN exposed pad doubles as the primary thermal and ground connection. Solder the center pad to a ground plane through a 5x5 via array (approximately 0.3 mm vias); a voided or un-soldered pad degrades both thermal performance and analog noise floor. Place one 0.1uF ceramic decoupling capacitor within 2 mm of each VDD pin, plus bulk 10uF capacitance near the supply entry. Keep the exposed-pad via array clear of solder mask openings sized to avoid wicking during reflow.
Do not confuse the MR (VQFN-64) and PT/ML (TQFP-64) package variants when ordering - they share the same die but different footprints and are NOT interchangeable on one PCB. Remember the 'T' suffix means tape-and-reel (production packaging), not a different device. When migrating firmware from the DSPIC33EP256GM306 (128KB Flash) to this 256KB part, the linker scripts change; ensure configuration bit settings for oscillator, watchdog, and code protection are copied, since they are not part of the binary default.
For motor-control PWM outputs, route the 12 MCPWM gate signals away from encoder (QEI) and analog feedback traces; dsPIC33EP gate drivers switching amperes can couple glitches into current-sense channels. Use the on-chip op-amps as close as possible to the shunt resistors and sample with simultaneous ADC triggers synchronized to the PWM center (center-aligned trigger) to avoid switching noise in the current readings. Series terminate long UART/SPI lines over 15 cm to control ringing at 70 MIPS toggle rates.
合规信息
Compliance declarations were not present in the verified web data; obtain RoHS/REACH/conflict-minerals certificates from the Microchip product page or distributor compliance documents.
