DSPIC33CK128MC505T-I/PT - 100MHz DSC, 128KB Flash | Microchip
MPN： DSPIC33CK128MC505T-I/PT ✓ 啟用中DSPIC33CK128MC505T-I/PT 概覽
A Digital Signal Controller combines the computational capability of a DSP with the peripheral integration and control-oriented architecture of a microcontroller. Within the power-management hierarchy of embedded systems, a DSC sits between a general-purpose MCU and a dedicated DSP, providing deterministic single-cycle MAC and DSP instructions alongside real-time control peripherals such as high-speed PWM, making it the standard choice for Field-Oriented Control (FOC) motor drives and digital power conversion.
Key differentiating features include the 100 MHz dsPIC33CK core with DSP-enhanced instruction set, a 12-bit 3.5 Msps ADC with up to 20 input channels, two on-chip 12-bit DACs, and integrated operational amplifiers that reduce external BOM cost in current-sense paths. CAN FD (Flexible Data-rate) support enables modern automotive and industrial network nodes.
Architecturally, the device belongs to Microchip's dsPIC33CK128MC505 family (part of the broader dsPIC33CK256MC50X documentation family), built on CMOS process technology with multiple internal bus architectures, a barrel shifter, four DMA channels, and hardware divide support. Operating voltage is 3.0 V to 3.6 V, with operation specified at -40C to +85C for the I temperature grade.
Typical applications include brushless DC and PMSM motor control with sensorless FOC, digital power supplies such as totem-pole PFC and LLC converters, CAN FD networked industrial nodes, and high-performance general embedded control.
A key design consideration: the 3.0-3.6 V supply rails require a stable LDO or buck regulator, and the 12-bit ADC reference should be decoupled carefully to preserve conversion accuracy at 3.5 Msps.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not consolidated in the manufacturer datasheet.
直接替換替代品，適用於 DSPIC33CK128MC505T-I/PT — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： DSPIC33CK128MC505T-I/PT （相同外形與佔位） — 差異在於 Core, Operating Temperature, Package.
DSPIC33CK256MC505T-I/PT
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPIC33CK64MC505T-I/PT
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPIC33CK128MC505T-E/PT
✅ 直接替換📋 參考替代品（不在目錄中）
DSPIC33CK128MC505T-H/PT
✅ 直接替換📋 參考替代品（不在目錄中）
DSPIC33CK128MC505-E/PT
✅ 直接替換聯絡詢價
查看資料表 →DSPIC33CK128MC505T-I/PT 最大額定值與電氣特性
| Core | dsPIC33CK 16-bit DSC |
| Maximum Operating Frequency | 100 MHz (100 MIPS) |
| Program Memory (Flash) | 128 KB |
| Data RAM | 16 KB |
| Operating Voltage Range | 3.0 V to 3.6 V |
| ADC Resolution | 12-bit |
| ADC Channels | 20 channels |
| DAC | 2 x 12-bit |
| Communication Interfaces | CAN FD, UART, SPI, I2C |
| DMA Channels | 4 |
| General-Purpose I/O | 39 pins |
| 封裝 | 48-TQFP (7x7 mm, 0.5 mm pitch) |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40C to +85C (I grade) |
| Packaging | Tape & Reel (T suffix) |
| RoHS 狀態 | Compliant |
| Technology | CMOS |
DSPIC33CK128MC505T-I/PT 48-tqfp (7x7 mm, 0.5 mm pitch) 腳位配置指南
DSPIC33CK128MC505T-I/PT（48-tqfp (7x7 mm, 0.5 mm pitch) 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： DSPIC33CK128MC505T-I/PT.
請參閱 資料表 以查看完整腳位配置。
典型應用
DSPIC33CK128MC505T-I/PT 適用於 6 應用s: Sensorless BLDC/PMSM Motor Control (FOC), Digital Power Conversion (Totem-Pole PFC, LLC), CAN FD Industrial Network Nodes, Embedded Sensing with Integrated Analog, High-Performance General Embedded Control, Digital Audio and Signal Processing Front Ends.
Sensorless BLDC/PMSM Motor Control (FOC)
The DSPIC33CK128MC505T-I/PT is optimized for Field-Oriented Control of brushless DC and permanent-magnet synchronous motors. Its 100 MHz core executes FOC current loops with deterministic single-cycle MAC instructions, while the high-speed PWM peripheral provides high-resolution duty update for low-ripple phase currents. The 12-bit, 20-channel ADC samples two phase currents and the DC bus simultaneously, and the integrated op-amps condition shunt-resistor signals without external amplifiers, cutting BOM cost per drive. Typical firmware sizes for sensorless FOC plus a CAN FD service layer fit comfortably in the 128 KB Flash. Designers should place the ADC sampling trigger synchronous to the PWM center to minimize switching-noise coupling into current measurements.
推薦
Digital Power Conversion (Totem-Pole PFC, LLC)
In digital power supplies such as totem-pole PFC and LLC converters, the DSPIC33CK128MC505T-I/PT supplies the control loop at 100 MIPS with fast, deterministic interrupt latency. The 12-bit ADC at high sample rate closes voltage and current loops well above the converter bandwidth, and the high-resolution PWM (sub-nanosecond duty steps) enables precise phase-shift and burst-mode control needed for high-efficiency topologies. Two 12-bit DACs drive onboard comparators for cycle-by-cycle overcurrent protection in hardware, independent of CPU load. The 3.0-3.6 V digital supply should be generated by a clean local regulator, isolated from the noisy power-stage gate-drive rail to preserve ADC accuracy.
推薦
CAN FD Industrial Network Nodes
With an integrated CAN FD controller, the DSPIC33CK128MC505T-I/PT serves as an intelligent node in industrial and automotive-style networks at data rates beyond classical CAN. The 100 MHz core handles protocol stacks, and the four DMA channels offload CAN message buffering from the CPU, sustaining high bus utilization without software bottlenecks. The 39 GPIO and UART/SPI/I2C peripherals let one chip aggregate local sensors and actuators before shipping data onto the CAN FD backbone. Use an external CAN FD transceiver such as the MCP2562FD and follow Microchip's CAN FD design guidance on bus stub length and termination (120 ohm at both ends) for reliable operation at 5 Mbps data phase.
推薦
Embedded Sensing with Integrated Analog
The DSPIC33CK128MC505T-I/PT integrates a 12-bit, 20-channel ADC, two 12-bit DACs, and operational amplifiers, enabling compact analog sensing nodes with minimal external components. Sensor signals - pressure bridges, current shunts, thermistor dividers - can be amplified by the internal op-amps, converted by the ADC, and thresholded by DAC-driven comparators entirely on-chip. The 100 MHz core applies DSP filtering (IIR/FIR) directly on samples using hardware MAC instructions, achieving results that would otherwise require an external DSP or FPGA. For highest conversion accuracy, reference the ADC to a clean external voltage reference and average multiple samples to suppress noise below the 12-bit LSB level.
推薦
High-Performance General Embedded Control
Beyond DSP-centric uses, the DSPIC33CK128MC505T-I/PT is a strong general-purpose 16-bit controller: 128 KB Flash and 16 KB RAM accommodate substantial application logic, while 39 GPIO, four external interrupts, and four DMA channels support responsive I/O handling. The C compiler toolchain (MPLAB XC16) and MPLAB X IDE provide a complete free development environment, and hardware debugging via ICSP simplifies bring-up. The device suits appliances, power tools, lighting ballasts, and industrial automation products that need more arithmetic throughput than a PIC16-class MCU. Plan Flash usage early - if your application plus a bootloader and communication stack approaches 100 KB, step up to the pin-compatible 256 KB variant instead.
推薦
Digital Audio and Signal Processing Front Ends
The DSP-enhanced core of the DSPIC33CK128MC505T-I/PT - single-cycle MAC, barrel shifter, hardware divide, and two 12-bit DACs - makes it effective for real-time signal processing front ends such as sensor-conditioning, active filtering, and tone generation in cost-sensitive products. The 100 MIPS budget supports multi-channel FIR/IIR filtering, and the DACs can output processed waveforms directly for actuator or audio-cue drive. UART/SPI links stream processed data to host processors. For audio-grade output quality, the on-chip 12-bit DACs are adequate for cues and alarms but not hi-fi playback; use an external codec over SPI/I2C when higher dynamic range is required.
推薦
推薦產品摘要
工程參考資料，適用於 DSPIC33CK128MC505T-I/PT — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | DSPIC33CK256MC505T-I/PT | DSPIC33CK64MC505T-I/PT | DSPIC33CK128MC505T-E/PT | DSPIC33CK128MC505T-H/PT |
|---|---|---|---|---|---|
| Package | 48-TQFP (7x7 mm) | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same | 48-TQFP (7x7) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core / Speed | dsPIC33CK, 100 MHz (100 MIPS) | dsPIC33CK, 100 MHz | dsPIC33CK, 100 MHz | dsPIC33CK, 100 MHz | dsPIC33CK, 100 MHz |
| Flash Program Memory | 128 KB | 256 KB | 64 KB | 128 KB | 128 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| Operating 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 |
| Temperature Range | -40C to +85C (I grade) | -40C to +85C | -40C to +85C | -40C to +125C (E grade) | high-temp grade (H) |
| CAN FD / ADC / DAC | Yes / 12-bit 20-ch / 2x 12-bit | Yes / same / same | Yes / same / same | Yes / same / same | Yes / same / same |
主要差異化特點
- Double the program memory in the same footprint (對比DSPIC33CK256MC505T-I/PT)
- Extended temperature option at identical silicon (對比DSPIC33CK128MC505T-E/PT)
- Cost-down path without redesign (對比DSPIC33CK64MC505T-I/PT)
- Honest limitation: no cross-brand drop-in exists (對比STM32 / TI C2000 rivals)
設計說明
Supply the DSPIC33CK128MC505T-I/PT from a regulated 3.3 V rail within 3.0-3.6 V. In motor-drive or digital-power boards, generate the controller supply with a dedicated small regulator (e.g., MCP16301) rather than tapping the gate-driver rail, and decouple each VDD pin with 100 nF ceramics placed within 2 mm of the pin plus one bulk 4.7-10 uF capacitor. Exceeding 3.6 V on any VDD or 5 V-tolerant check on GPIO is not permitted - level-shift to 5 V legacy logic externally.
For FOC current sampling, trigger the 12-bit ADC synchronously with the PWM center (center-aligned trigger) so sampling avoids switch-node transitions; this alone can remove most of the switching-noise error in shunt measurements. Route analog sense traces away from PWM/gate-drive lines, use a Kelvin connection to shunt resistors into the internal op-amp inputs, and average 4-8 samples in firmware to stay below a 12-bit LSB of noise at full 3.5 Msps-class sampling rates.
Two frequent mistakes: (1) assuming 5 V tolerance - the dsPIC33CK I/O domain is 3.0-3.6 V only; verify all external interfaces. (2) Suffix confusion - the T in the MPN means tape-and-reel, not temperature; the I is the -40C to +85C grade and E is -40C to +125C, so order E/PT for high-ambient enclosures. Also allocate Flash budget early: the CAN FD stack plus bootloader plus FOC math can approach 128 KB; the pin-compatible DSPIC33CK256MC505 avoids a redesign.
The 48-TQFP (7x7 mm, 0.5 mm pitch) layout benefits from a solid ground plane under the device and short return paths for the oscillator and CAN FD signals. Follow Microchip's programming and debugging guidance for ICSP connections (MCLR, PGD, PGC) with a series resistor on MCLR and keep these traces accessible via a header for field programming. Estimated: a 2-layer board is workable, but a 4-layer stackup with dedicated ground improves ADC noise performance noticeably in motor-control environments.
合規資訊
RoHS compliant per distributor listings (full-electronic.com RoHS status field). Microchip standard commercial parts are lead-free; REACH and halogen-free status should be confirmed from Microchip's official product page.
