DSPIC33FJ256GP506-I/PT - 16-Bit 40 MIPS DSC 256KB Flash | Microchip
料号： DSPIC33FJ256GP506-I/PT ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $8.12 | $8.12 |
| 10 | $7.31 | $73.10 |
| 100 | $6.58 | $658.00 |
| 500 | $5.92 | $2,960.00 |
| 1,000 | $5.33 | $5,330.00 |
DSPIC33FJ256GP506-I/PT 概述
A Digital Signal Controller combines the computational throughput of a digital signal processor with the peripheral integration and ease of use of a microcontroller. In the power-management hierarchy of embedded systems, the DSC sits between general-purpose MCUs (such as PIC24 and PIC18 devices) and dedicated DSPs: it executes math-intensive control loops and filter algorithms while simultaneously handling communication, timing, and I/O tasks on a single chip. The dsPIC33F family uses a modified Harvard architecture that is C-compiler optimized, with separate program and data buses for simultaneous instruction and operand fetch.
Key features of the DSPIC33FJ256GP506-I/PT include the 16-bit dsPIC33F core running up to 40 MIPS, 256KB (256K x 8) of self-programmable flash for code and data storage, and the GP-family peripheral set including high-speed ADC, output-compare/PWM channels, and UART, SPI, and I2C serial interfaces. Seamless migration to PIC24 MCUs and dsPIC30F DSCs in similar packages protects software investment across product generations.
Architecturally, the modified Harvard core supports DSP-class instructions (MAC, DSP multiply) with dual operand fetch, enabling digital filters and high-speed precision control loops without an external DSP. The 40MIPS core was explicitly designed for digital filter algorithms, high-speed precision digital control loops, and digital audio and speech processing, per Microchip's product documentation.
Typical applications include industrial embedded control requiring 3.3V operation and large memory, precision analog sensing with the on-chip ADC, motor and power control using the PWM/compare peripherals, and digital audio or speech processing. The 64-TQFP package provides generous general-purpose I/O for multi-peripheral designs.
When designing with this device, provide a stable 3.3V rail with proper decoupling on all VDD/VSS pin pairs, and note that multiple PGECx/PGEDx pairs exist - ICSP programming requires using a matched PGECx/PGEDx pair.
This page synthesizes distributor pricing, same-package drop-in alternatives, and practical design notes not found in the manufacturer datasheet, with data verified as of 2026-09-27.
直接替换替代料： DSPIC33FJ256GP506-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： DSPIC33FJ256GP506-I/PT （相同外形与封装尺寸） ——差异在于 Operating Temperature, Programming Interface, Package, Core, Core Architecture.
快速对比工具——选择替代料号进行并排对比：
DSPIC33FJ256GP506AT-I/PT
✅ 直接替换✓ 有现货
$4.95 / 个
查看数据手册 →DSPIC33FJ256GP506A-E/PT
✅ 直接替换✓ 有现货
$6.6 / 个
查看数据手册 →DSPIC33FJ128GP506-I/PT
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DSPIC33FJ128GP306-I/PT
✅ 直接替换✓ 有现货
$4.55 / 个
查看数据手册 →DSPIC33FJ64GP506-I/PT
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DSPIC33FJ256GP506-I/PT 最大额定值与电气特性
| Core | dsPIC33F 16-bit |
| Max CPU Speed | 40 MIPS |
| Flash Memory | 256KB (256K x 8) |
| SRAM | 30KB |
| Supply Voltage Range | 3.0 V to 3.6 V |
| 工作温度 | -40C to +85C (I grade) |
| 封装 | 64-TQFP (10x10 mm) |
| 安装类型 | Surface Mount |
| Architecture | Modified Harvard, C-compiler optimized |
| Migration Path | PIC24 MCUs and dsPIC30F DSCs in similar packages |
| Programming Interface | ICSP via PGECx/PGEDx pairs |
| Serial Interfaces | UART, SPI, I2C |
| Timers/PWM | Output Compare / PWM channels |
| ADC | On-chip 12-bit ADC |
| RoHS 状态 | Compliant |
DSPIC33FJ256GP506-I/PT 64-tqfp (10x10 mm) 引脚配置指南
DSPIC33FJ256GP506-I/PT（64-tqfp (10x10 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： DSPIC33FJ256GP506-I/PT.
请参阅 数据手册 以查看完整引脚配置。
典型应用
DSPIC33FJ256GP506-I/PT 适用于 6 应用s: Industrial Embedded Control, Precision Analog Sensing, Digital Audio and Speech Processing, Power Supply and Converter Control, Motor Control Systems, Data Loggers and IoT Gateways.
Industrial Embedded Control
The DSPIC33FJ256GP506-I/PT targets standard industrial embedded applications that require 3.3V operation, massive memory, and reliable real-time control. Its 40 MIPS 16-bit core executes deterministic control loops while the 256KB flash holds communication stacks, state machines, and data tables without external memory. The -40C to +85C industrial temperature grade suits factory-floor environments. UART, SPI, and I2C interfaces connect PLC I/O modules, HMIs, and field sensors, while output-compare/PWM channels drive actuators and heaters. Placed as the main controller with a 3.3V regulator and 10uF/0.1uF decoupling per supply pin pair, it delivers MCU-class integration with DSP-class arithmetic for filtering and closed-loop regulation in one 64-TQFP device.
推荐
Precision Analog Sensing
The on-chip 12-bit ADC of the DSPIC33FJ256GP506-I/PT, combined with the 40 MIPS DSP core, makes it a strong fit for multi-channel precision sensing nodes such as pressure, flow, and temperature measurement systems. The core runs digital filter algorithms (IIR/FIR compensation filters, averaging, oversampling) in real time on sampled data, improving effective resolution without external analog filtering stages. The 256KB flash stores calibration tables and per-unit factory trim data. Place the device near the analog front end on a split ground plane, sample with the ADC at a fixed timer-driven rate, and perform compensation in software - the DSC architecture removes the need for a separate MCU-plus-DSP two-chip solution in mid-performance sensing products.
推荐
Digital Audio and Speech Processing
Microchip explicitly designed the 40 MIPS dsPIC33F core for digital audio and speech processing. The DSPIC33FJ256GP506-I/PT executes MAC-heavy codecs, echo cancellation, and filtering with its DSP multiply-accumulate instructions, while UART/SPI links stream audio data to codecs and amplifiers. The 256KB flash accommodates speech-compression libraries and stored-prompt audio assets, and 30KB SRAM buffers audio frames. In a typical design, the DSC sits between an I2S/SPI audio codec and system glue, performing sample-rate processing at fixed ISR intervals; its deterministic single-cycle MAC throughput at 40 MIPS supports common speech-band algorithms up to several kHz sampling rates without floating-point hardware.
推荐
Power Supply and Converter Control
The 40 MIPS core and PWM output-compare peripherals let the DSPIC33FJ256GP506-I/PT close high-speed digital control loops for DC-DC converters, inverters, and battery chargers. The ADC samples output voltage and current at timer-synchronized intervals, and the core executes PID or predictive compensation within each switching cycle; digital control eliminates analog component drift and enables adaptive algorithms. The 3.0V to 3.6V supply and 64-TQFP footprint integrate cleanly into digital power boards. For dedicated digital-power designs with high-resolution PWM and fault protection, pair this GP part for system supervision with an SMPS-family dsPIC33F (such as the DSPIC33FJ16GS504) driving the power stage directly.
推荐
Motor Control Systems
With its 40 MIPS throughput, multiple PWM-capable output-compare channels, and 12-bit ADC, the DSPIC33FJ256GP506-I/PT supports sensor-based motor control for BLDC/PMSM drives in fans, pumps, and light industrial actuators. The core executes FOC or trapezoidal commutation mathematics and current-loop filtering in real time, while the GP peripheral set handles UART-based host communication and fault monitoring. Designs needing under 128KB of code can also start on the pin-compatible DSPIC33FJ128GP506 and migrate. Layout practice: keep the ADC sense lines (shunt amplifier outputs) short and away from PWM switching nodes, and synchronize ADC sampling to PWM edges to measure current at low-ripple instants.
推荐
Data Loggers and IoT Gateways
The combination of 256KB self-programmable flash, 30KB SRAM, and multiple serial interfaces makes the DSPIC33FJ256GP506-I/PT well suited for standalone data loggers and serial-to-wireless IoT gateway nodes. The large flash stores logging firmware plus calibration and configuration data, and self-programming supports field firmware updates over UART or I2C. Its 40 MIPS core handles protocol parsing, CRC computation, and local analytics, while the industrial -40C to +85C range permits outdoor and unconditioned deployments. In a typical gateway, the DSC aggregates sensor traffic on SPI/I2C and forwards packets to a radio module over UART; the 64-TQFP I/O count connects multiple sensor buses concurrently on one controller.
推荐
推荐产品汇总
工程参考数据： DSPIC33FJ256GP506-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 | DSPIC33FJ256GP506AT-I/PT | DSPIC33FJ256GP506A-E/PT | DSPIC33FJ128GP506-I/PT | DSPIC33FJ128GP306-I/PT |
|---|---|---|---|---|---|
| Package | 64-TQFP (10x10) | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same | 64-TQFP (10x10) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| CPU Speed | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS | 40 MIPS |
| Flash Memory | 256KB | 256KB | 256KB | 128KB | 128KB |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +125C | -40C to +85C | -40C to +85C |
| 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 |
| Silicon Revision / Grade | Original silicon, industrial (I) | A-revision silicon, industrial (I) | A-revision silicon, extended (E) | Industrial (I), smaller flash | Industrial (I), smaller flash |
关键差异点
- Maximum flash in the 64-pin GP group （对比 DSPIC33FJ128GP506-I/PT)
- Extended-temperature sibling available （对比 DSPIC33FJ256GP506A-E/PT)
- Mature original silicon at lower cost （对比 DSPIC33FJ256GP506AT-I/PT)
设计说明
Supply the device from a regulated 3.3V rail within the 3.0V to 3.6V datasheet window. Decouple every VDD/VSS pin pair with a 0.1uF ceramic placed within 2-3 mm of the pins, plus one bulk 10uF per supply domain. In mixed systems where a 5V rail exists, level-shift any 5V-driven signals into the dsPIC33F - 5V-tolerant behavior must be confirmed against the family datasheet before direct connection. Estimated: a 40 MIPS active load of a few tens of mA keeps dissipation well under 100 mW, so no heatsinking is required.
The 64-TQFP (10x10) has 0.5 mm pitch leads - design land patterns per the Microchip package drawing and use no-clean or water-wash flux processes suited to fine pitch. Reserve a programming header connected to one matched PGECx/PGEDx pair: per Microchip documentation, any pair may be used but ICSPCLK and ICSPDAT must come from the same pair (e.g., PGEC2 with PGED2). Keep this pair free of series resistors or bus loads that could disturb ICSP signaling during production programming.
Before finalizing layout, review the Microchip silicon errata document for the dsPIC33FJXXXGPX06/X08/X10 family - the original (non-A) silicon has documented errata items, and the DSPIC33FJ256GP506AT A-revision resolves them. Check the oscillator configuration: an invalid PLL configuration can prevent startup, so verify FRC/primary-oscillator and PLL settings against the family datasheet clock section, and provide a test point on the OSCO pin for bring-up debugging.
合规信息
RoHS-compliant lead-free production part per standard Microchip ordering codes; REACH and halogen-free status should be confirmed via the Microchip product page environmental documents.
