DSPIC33EP128GM306T-I/PT - 70 MIPS 16-bit DSC 128KB Flash | Microchip
料号： DSPIC33EP128GM306T-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.54 | $6.54 |
| 10 | $5.92 | $59.20 |
| 100 | $5.38 | $538.00 |
| 500 | $4.85 | $2,425.00 |
| 1,000 | $4.42 | $4,420.00 |
DSPIC33EP128GM306T-I/PT 概述
A digital signal controller combines the computational throughput of a DSP with the peripheral integration and control architecture of a microcontroller, occupying the middle of the embedded hierarchy between general-purpose MCUs and dedicated DSPs. The dsPIC33EP family extends this concept with an enhanced DMA controller and motor-control-specific peripherals, making the DSC class the preferred choice for closed-loop control systems such as field-oriented motor control and digital power conversion.
Key features include 12 channels of Motor Control PWM (MCPWM), 8 input capture and 8 output compare channels, 2 quadrature encoder interfaces (QEI), 4 integrated operational amplifiers, a Charge Time Measurement Unit (CTMU) for capacitive touch and precision timing, and a Peripheral Trigger Generator (PTG) for autonomous task scheduling.
Architecturally, the device pairs the dsPIC 16-bit core with a two-cycle MAC, DSP instruction support, four DMA channels, and Peripheral Pin Select (PPS) that lets designers remap digital peripherals to available pins, maximizing layout flexibility on dense boards. The operating voltage range is 3.0V to 3.6V with a nominal 3.3V supply, and the -I suffix indicates an industrial operating temperature range.
Typical applications include precision PMSM and BLDC motor drives, digital power supplies (PFC, LLC), industrial automation, and audio/signal processing pipelines where hardware DSP multiply-accumulate and analog op-amps reduce external BOM count.
Design consideration: leverage the 4 on-chip op-amps with the 12-channel MCPWM to implement current-sensing feedback loops without external amplifiers, but budget careful analog layout with ground guarding around the op-amp pins.
This page synthesizes distributor pricing from LCSC and Microchip USA, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet, as of 2026-09-23.
直接替换替代料： DSPIC33EP128GM306T-I/PT ——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： DSPIC33EP128GM306T-I/PT （相同外形与封装尺寸） ——差异在于 Operating Temperature, Package, Packaging, Input Capture / Output Compare, Quadrature Encoder Interfaces.
快速对比工具——选择替代料号进行并排对比：
DSPIC33EP256GM306T-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.72 / 个
查看数据手册 →DSPIC33EP128GM306-E/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$6.15 / 个
查看数据手册 →DSPIC33EP128GM304T-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$3.95 / 个
查看数据手册 →DSPIC33EP128GM706T-I/PT
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DSPIC33EP128MC306T-I/PT
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DSPIC33EP128GM306T-I/PT 最大额定值与电气特性
| Core Processor | dsPIC 33EP 16-bit |
| Maximum Performance | 70 MIPS |
| Program Memory (Flash) | 128KB (43K x 24) |
| RAM | 16KB |
| 电源电压 | 3.0 V to 3.6 V (nominal 3.3 V) |
| MCPWM Channels | 12 (Motor Control PWM) |
| Input Capture / Output Compare | 8 / 8 |
| Quadrature Encoder Interfaces | 2 (QEI) |
| Operational Amplifiers | 4 (on-chip) |
| Charge Time Measurement Unit | Yes (CTMU) |
| Peripheral Trigger Generator | Yes (PTG) |
| Timers | 13 |
| DMA Channels | 4 |
| 封装 | 64-TQFP (10x10x1 mm) |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (industrial, -I) |
| Packaging | Tape & Reel (T suffix) |
| Peripheral Pin Select | Yes (PPS remapping) |
DSPIC33EP128GM306T-I/PT 64-tqfp (10x10x1 mm) 引脚配置指南
DSPIC33EP128GM306T-I/PT（64-tqfp (10x10x1 mm) 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： DSPIC33EP128GM306T-I/PT.
请参阅 数据手册 以查看完整引脚配置。
典型应用
DSPIC33EP128GM306T-I/PT 适用于 6 应用s: PMSM / BLDC Motor Drives, Digital Power Conversion, Industrial Automation and Motion Control, Sensor Signal Conditioning and Data Acquisition, Audio and Speech Processing, Embedded Control and IoT Nodes.
PMSM / BLDC Motor Drives
The DSPIC33EP128GM306T-I/PT is purpose-built for closed-loop field-oriented control (FOC) of PMSM and BLDC motors. Its 12 MCPWM channels generate complementary three-phase PWM with hardware dead-time insertion, while the 2 QEI modules read rotary encoder feedback at full speed without CPU loading. The 4 on-chip op-amps amplify low-level shunt-resistor current signals, eliminating external amplifier ICs and reducing BOM cost in drive inverters. At 70 MIPS with hardware MAC, the core executes current-loop FOC at 10-20 kHz update rates with headroom for supervisory logic. Pair with a three-phase gate driver and use the CTMU or ADC-trigger synchronization for precise current sampling aligned to PWM center.
推荐
Digital Power Conversion
In digital power supplies (PFC, half-bridge, LLC), the DSPIC33EP128GM306T-I/PT provides high-resolution MCPWM outputs synchronized to ADC conversions of voltage and current loops. The 70 MIPS core with DSP multiply-accumulate runs proportional-integral compensators at switching frequencies up to several hundred kHz for buck-class topologies, while the PTG offloads periodic trigger generation from software. The 8 input capture channels measure duty and phase of external events, useful for synchronous rectification timing. Because the device runs from a single 3.3V rail, it interfaces directly with isolated feedback via digital isolators. Note the PWM resolution trade-off: verify high-resolution PWM requirements against the datasheet before committing to MHz-class converters.
推荐
Industrial Automation and Motion Control
Factory automation nodes benefit from the DSPIC33EP128GM306T-I/PT's combination of 13 timers, 4 DMA channels, and Peripheral Pin Select, which allows UART, SPI, and PWM peripherals to be routed to optimal PCB locations. The dual QEI modules support two-axis motion tracking, and the 8 output compare channels generate precise timed events for valve, solenoid, or stepper sequencing. With 128KB Flash, a bootloader plus full control application fits with room for parameter logging in RAM. The industrial -40C to +85C temperature rating suits panel and cabinet installations. Use the CTMU for low-cost capacitive touch HMI interfaces directly on the control board without a separate touch controller.
推荐
Sensor Signal Conditioning and Data Acquisition
The 4 on-chip operational amplifiers of the DSPIC33EP128GM306T-I/PT can be configured as programmable-gain amplifiers ahead of the ADCs, making it a compact front end for bridge sensors, current shunts, and microphone preamps. The CTMU supports precise time-interval and capacitance measurement for ultrasonic and touch sensing, while the PTG automates trigger sequences between ADC sampling and DMA transfers without CPU intervention. With 16KB RAM, a sliding-window FIR/IIR filter bank fits comfortably alongside application logic thanks to the hardware MAC. This reduces board area versus discrete amplifier plus MCU solutions in multi-channel acquisition nodes.
推荐
Audio and Speech Processing
For embedded audio, the DSPIC33EP128GM306T-I/PT applies its DSP engine (single-cycle MAC, DSP addressing modes) to filtering, AGC, and acoustic echo tasks. The 8 input capture channels can time-stamp audio events for beamforming experiments, while DMA-driven SPI or UART links stream codec data without CPU stalls. On-chip op-amps provide inexpensive pre-amplification of electret microphones. The 70 MIPS budget supports sample-rate conversions and multiple cascaded biquad filters in real time at 16-48 kHz sampling. For production audio products, note this part lacks a dedicated audio codec interface, so an external codec over SPI/I2C is required.
推荐
Embedded Control and IoT Nodes
As a general embedded controller, the DSPIC33EP128GM306T-I/PT offers 53 I/O-class digital pins with PPS remapping, multiple UART/SPI/I2C instances via remap, and 128KB Flash for protocol stacks. The dual-QEI and rich PWM set also make it a flexible node for robotics peripherals, actuators, and smart sensors bridging analog field signals to industrial networks. The single 3.3V supply simplifies integration with modern radios and level-compatible sensors. The CTMU-based touch interface enables button-free enclosures for washdown or sealed environments. Its active lifecycle status and multi-source distributor stock (DigiKey, Mouser, LCSC as of 2026-09-23) reduce long-term supply risk.
推荐
推荐产品汇总
工程参考数据： DSPIC33EP128GM306T-I/PT ——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/PT | DSPIC33EP128GM306-E/PT | DSPIC33EP128GM304T-I/PT | DSPIC33EP128GM706T-I/PT |
|---|---|---|---|---|---|
| Package | 64-TQFP (10x10 mm) | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same | 64-TQFP (10x10 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 128KB (43K x 24) | 256KB | 128KB | 128KB | 128KB |
| RAM | 16KB | 32KB | 16KB | 16KB | 16KB |
| Performance | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS | 70 MIPS |
| Supply 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 |
| Key Peripherals | 12 MCPWM, 8/8 IC/OC, 2 QEI, 4 op-amps, CTMU, PTG | Identical to GM306 | Identical to GM306 | Reduced instance count | GM7 peripheral mix |
| Lifecycle Status | Active | Active | Active | Active | Active |
关键差异点
- Integrated analog front end （对比 DSPIC33EP128GM304T-I/PT)
- Memory headroom upgrade path （对比 DSPIC33EP256GM306T-I/PT)
- Extended temperature option without respin （对比 DSPIC33EP128GM306-E/PT)
设计说明
Supply the DSPIC33EP128GM306T-I/PT from a clean 3.3V rail within the 3.0V-3.6V window. Place a 0.1uF ceramic capacitor at every VDD/VSS pin pair plus one 4.7uF-10uF bulk capacitor near the device. When running at 70 MIPS with all 12 MCPWM outputs switching, core current transients are fast; a local ferrite bead plus decoupling network prevents ground bounce from corrupting the analog op-amp and CTMU measurements. Estimated: with typical core current in the tens of mA range, IR drop across PCB traces is negligible, but ensure the regulator can handle peak startup and Flash-write currents per datasheet electrical characteristics.
Route the 4 on-chip op-amp inputs and their external shunt/bridge networks as short as possible with a guard ring connected to a quiet analog ground. Keep the PWM output traces away from analog routing to prevent coupling into ADC samples; where crossing is unavoidable, cross at 90 degrees on adjacent layers. The Peripheral Pin Select feature lets you position UART/SPI functions at the connector side of the board - use PPS during layout, then freeze the mapping in firmware. Use the 64-TQFP exposed-lead pattern with standard 0.5mm pitch land pattern per IPC recommendations and Microchip's reference layout in the family datasheet.
Three frequent mistakes with this device: (1) forgetting that Peripheral Pin Select must be unlocked (PPS unlock sequence) before remapping, causing peripherals that silently never appear on pins; (2) using the /PT tape-and-reel part with a reflow profile not qualified for moisture-sensitive TQFP - observe the MSL floor-life requirements; (3) assuming 5V tolerance on I/O - this is strictly a 3.3V part, so 5V sensors need level shifting. Also confirm the correct device variant in your programmer (GM306 vs GM304) to avoid erasing with the wrong device signature in MPLAB X / IPE.
合规信息
Standard Microchip production part, RoHS compliant and lead-free per the /PT packing code; formal REACH/halogen certificates available from Microchip compliance portal.
