DSPIC33FJ128GP708A-I/PT - 16-bit 40MIPS 128KB Flash DSC | Microchip
料号： DSPIC33FJ128GP708A-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $15.18 | $15.18 |
| 10 | $13.9 | $139.00 |
| 100 | $13.1 | $1,310.00 |
| 500 | $12.4 | $6,200.00 |
| 1,000 | $11.8 | $11,800.00 |
DSPIC33FJ128GP708A-I/PT 概述
A Digital Signal Controller combines the deterministic control of a microcontroller with the mathematical throughput of a DSP core. In the embedded systems hierarchy, the dsPIC33F sits between general-purpose MCUs (such as the PIC24) and dedicated DSPs, executing digital filter algorithms and high-speed precision digital control loops in a single-chip solution. This makes DSCs the preferred choice for motion control, power conversion, and audio processing systems that must perform under pressure.
Key features of the DSPIC33FJ128GP708A include the 16-bit CPU core executing up to 40 million instructions per second, 128 KB of self-programmable Flash with an ECC-free A-revision silicon, integrated high-speed analog peripherals, and a codec interface (DCI) suited for speech and audio processing. Per the Microchip dsPIC33FJXXXGPX06A/X08A/X10A family datasheet, the GP708A variant targets the 80-pin footprint with seamless migration across memory sizes.
Architecturally, the device pairs a 16-bit modified Harvard core with DSP-engine multiply-accumulate (MAC) instructions, enabling single-cycle MAC operations for FIR/IIR filtering. Multiple PGECx/PGEDx pin pairs support In-Circuit Serial Programming (ICSP) via MPLAB ICD and PICkit tools, and the MPLAB XC-DSC C/C++ compiler provides full ANSI C support with DSC-specific language extensions.
Typical applications include digital power supplies and motor control (SMPS, PFC, FOC), speech and audio processing exploiting the Data Converter Interface, industrial automation sensors, and general-purpose embedded control where 40 MIPS and integrated analog remove the need for a separate DSP.
Design consideration: all VDD and VSS pins must be connected for correct operation and programming - even one unconnected pin can cause ICSP failure. Choose PGEC/PGED pairs consistently during debugger and programmer hookup.
This page synthesizes distributor pricing (as of 2026-09-26), same-family drop-in alternatives, and practical design notes not found in the manufacturer datasheet, giving engineers and buyers a single citable reference for the DSPIC33FJ128GP708A-I/PT.
直接替换替代料： DSPIC33FJ128GP708A-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： DSPIC33FJ128GP708A-I/PT （相同外形与封装尺寸） ——差异在于 Operating Temperature, Package, ADC, Core Architecture, Program Memory Size.
快速对比工具——选择替代料号进行并排对比：
DSPIC33FJ128GP310A-I/PF
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.7 / 个
查看数据手册 →DSPIC33FJ128GP708A-E/PT
✅ 直接替换✓ 有现货
$5.8 / 个
查看数据手册 →DSPIC33FJ256GP708A-I/PT
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DSPIC33FJ64GP708A-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$4.18 / 个
查看数据手册 →DSPIC33FJ128GP708-I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.64 / 个
查看数据手册 →DSPIC33FJ128GP708A-I/PT 最大额定值与电气特性
| Core | dsPIC33F, 16-bit |
| Program Memory Size | 128 KB (128K x 8) Flash |
| Maximum Performance | 40 MIPS |
| Product Family | dsPIC33FJ General Purpose (dsPIC33FJXXXGPX06A/X08A/X10A) |
| 封装 | 80-TQFP (12x12 mm) |
| 引脚数 | 80 |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (Industrial, I suffix) |
| Programming Interface | ICSP via PGECx/PGEDx pairs |
| Audio Interface | Data Converter Interface (DCI) for speech/audio codec |
| Compiler Support | MPLAB XC-DSC C/C++ Compiler |
| Development Board | Explorer 16/32 Development Board (PIM-based) |
| Device Classification | Digital Signal Controller (DSC) |
DSPIC33FJ128GP708A-I/PT 80-tqfp (12x12 mm) 引脚配置指南
DSPIC33FJ128GP708A-I/PT（80-tqfp (12x12 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： DSPIC33FJ128GP708A-I/PT.
请参阅 数据手册 以查看完整引脚配置。
典型应用
DSPIC33FJ128GP708A-I/PT 适用于 6 应用s: Digital Power Conversion, Speech and Audio Processing, Motor Control (BLDC, PMSM, ACIM), Industrial Automation and Sensing, General-Purpose Embedded Control, Portable Test and Measurement Instruments.
Digital Power Conversion
The DSPIC33FJ128GP708A-I/PT executes high-speed precision digital control loops for SMPS, PFC, and inverter stages. Its 16-bit core running at 40 MIPS with single-cycle DSP multiply-accumulate instructions sustains current-loop bandwidths that 8-bit MCUs cannot reach, while integrated advanced analog reduces external signal-conditioning components. In a typical digital power supply, the DSC samples voltage and current through the on-chip ADC, executes a compensator filter in the DSP engine, and drives PWM outputs at switching frequencies of tens to hundreds of kilohertz. The deterministic interrupt latency keeps control-loop jitter low, protecting efficiency and transient response. Firmware-based control also enables adaptive algorithms such as nonlinear or predictive control that fixed-function controllers cannot implement.
推荐
Speech and Audio Processing
Microchip explicitly designed the GP family's Data Converter Interface (DCI) for speech and audio applications, and the DSPIC33FJ128GP708A-I/PT applies it directly. The DCI connects to external audio codecs in a multi-channel serial frame format, while the 40 MIPS DSP engine executes FIR/IIR filters, echo cancellation, AGC, and compression algorithms with single-cycle MAC throughput. With 128 KB of Flash, voice-prompt tables and codec firmware fit on-chip, and the 80-pin TQFP provides enough GPIO for keypad, display, and system glue. Typical end products include intercoms, PA controllers, voice-dialing hands-free units, and industrial speech terminals. The key design trade-off is that the DCI requires an external codec, since no audio DAC is integrated.
推荐
Motor Control (BLDC, PMSM, ACIM)
Field-oriented control of brushless DC and permanent-magnet synchronous motors demands fast, deterministic current loops - exactly the workload Microchip cites for dsPIC33F devices executing high-speed precision digital control loops. The DSPIC33FJ128GP708A-I/PT samples phase currents via its advanced analog peripherals, runs Clarke/Park transforms and PI compensators in the DSP engine at 40 MIPS, and generates center-aligned PWM for the inverter bridge. The 80-pin package supplies ample PWM channels, encoder or hall inputs, and communication peripherals (UART/SPI/CAN-class links) for drive integration. Compared with an 8-bit MCU solution, the single-cycle MAC shortens loop execution several-fold, enabling higher switching frequencies, lower torque ripple, and sensorless observer algorithms such as sliding-mode or extended Kalman filters.
推荐
Industrial Automation and Sensing
Factory nodes - flow meters, load cells, vibration monitors - benefit from the DSPIC33FJ128GP708A-I/PT's combination of 16-bit control, DSP filtering, and integrated analog. Sensor front ends produce noisy microvolt signals; the on-chip ADC plus DSP-implemented notch and averaging filters extract measurement data without external filter ICs. The industrial temperature rating of -40C to +85C suits cabinet and floor installations, and the 80-pin TQFP exposes enough peripherals for RS-485-style UART links, SPI sensor buses, and local HMI I/O. ICSP programming through PGEC/PGED pairs permits field firmware updates on installed hardware. Designs scale within the pin-compatible family - swapping to DSPIC33FJ256GP708A adds Flash for datalogging without a PCB change.
推荐
General-Purpose Embedded Control
For products that need more math headroom than a PIC24 but not a full DSP, the DSPIC33FJ128GP708A-I/PT is a pragmatic single-chip answer. The 40 MIPS 16-bit core comfortably runs RTOS-based application code, communication stacks, and control logic concurrently, while 128 KB of self-programmable Flash supports in-field bootloaders. The Explorer 16/32 Development Board with a PIM supports rapid prototyping, and the MPLAB XC-DSC compiler gives full ANSI C with DSC extensions, shortening the learning curve from PIC24 projects. Common wins include instrumentation front ends, barcode and ID readers, and battery-powered test devices where an occasional FFT or filter pass justifies the DSC core without a second processor on the board.
推荐
Portable Test and Measurement Instruments
Handheld and bench instruments use the DSPIC33FJ128GP708A-I/PT for acquisition, DSP post-processing, and user interface in one device. The 40 MIPS core timestamps and buffers ADC samples, applies windowing and FFT or RMS computation through the DSP engine, and drives the display and front-panel controls from the 80-pin GPIO budget. Industrial temperature qualification supports workshop environments, and the 12x12 mm TQFP fits compact enclosure layouts. Because the Flash is self-programmable, instruments can ship with calibration routines and receive feature updates in the field via UART or USB-bridge bootloaders. The main trade-off versus a dedicated DSP+MCU pair is peak throughput; for sample rates and filter orders within 40 MIPS, the single-chip approach wins on BOM cost and power.
推荐
推荐产品汇总
工程参考数据： DSPIC33FJ128GP708A-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 | DSPIC33FJ128GP310A-I/PF | DSPIC33FJ128GP708A-E/PT | DSPIC33FJ256GP708A-I/PT | DSPIC33FJ64GP708A-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 80-TQFP (12x12 mm) | 80-TQFP - same | 80-TQFP - same | 80-TQFP - same | 80-TQFP - same |
| Core / Bits | dsPIC33F, 16-bit | dsPIC33F, 16-bit | dsPIC33F, 16-bit | dsPIC33F, 16-bit | dsPIC33F, 16-bit |
| Performance | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Flash Memory | 128 KB | 128 KB | 128 KB | 256 KB | 64 KB |
| Silicon Revision | A-revision | A-revision | A-revision | A-revision | A-revision |
| Audio Codec Interface (DCI) | Yes | Yes (GP family) | Yes | Yes | Yes |
关键差异点
- Balanced 128 KB Flash at lowest family cost tier （对比 DSPIC33FJ256GP708A-I/PT)
- Full code headroom versus reduced-memory variant （对比 DSPIC33FJ64GP708A-I/PT)
- Standard industrial rating for cost-sensitive builds （对比 DSPIC33FJ128GP708A-E/PT)
设计说明
Per Microchip family documentation, the dsPIC33FJ128GP708A has multiple PGECx/PGEDx pin pairs for ICSP; you may use any pair, but you must use them as a matched pair - PGEC2 with PGED2, for example. All VDD and VSS pins must be connected; even one unconnected power pin can cause programming to fail. Route programming header traces short and away from switching nodes.
Estimated: provide a clean 3.3 V rail with local 0.1 uF ceramic decoupling at every VDD/VSS pair plus one bulk capacitor per power domain; verify the exact operating voltage range in the manufacturer datasheet before layout sign-off, since the value is not stated in the distributor data on this page. Place the regulator output close to the TQFP power pins to minimize transient droop during 40 MIPS core activity.
The 80-TQFP 12x12 mm leadframe supports 0.5 mm pitch traces; fan out with via-in-pad avoidance on the fine-pitch rows and use a solid ground plane under the device. Keep the DCI codec serial lines and crystal traces short and guarded. The Explorer 16/32 Development Board PIM footprint is a good reference layout for first prototypes.
合规信息
Compliance status not stated in the provided web data; verify against the official Microchip product page before procurement.