DSPIC33CK256MC505-I/PT - 100 MIPS 16-bit DSC | Microchip
MPN： DSPIC33CK256MC505-I/PT ✓ 啟用中DSPIC33CK256MC505-I/PT 概覽
A digital signal controller combines the computational horsepower of a DSP with the peripheral set and ease of use of a microcontroller. Within the embedded control hierarchy, the DSC sits between general-purpose MCUs and dedicated DSPs, making it the preferred choice for closed-loop, math-intensive control loops such as field-oriented motor control and digital power conversion.
Key features of the DSPIC33CK256MC505 include the 100 MIPS dsPIC33CK core with DSP instruction extensions, 256 KB (256K x 8) ECC Flash and 32 KB (32K x 8) RAM, a 3.0V to 3.6V supply range, 34 general-purpose I/O pins, and a rich analog block: a 20-channel 12-bit SAR ADC capable of 3.5 Msps, two 12-bit DAC outputs, and on-chip operational amplifiers that reduce external component count in current-sense paths.
Architecturally, the dsPIC33CK family integrates high-resolution PWM modules with dead-time insertion, compatible with half-bridge and full-bridge power stages, plus CAN Flexible Data-Rate (CAN FD) for automotive and industrial networking. The core supports single-cycle MAC and DSP addressing modes, enabling efficient execution of control algorithms such as PI regulators, Clarke/Park transforms, and filters.
Typical applications include brushless DC and PMSM motor drives, digital power supplies (LLC, totem-pole PFC), solar micro-inverters, and industrial sensing nodes requiring CAN FD connectivity. The combination of fast ADC, on-chip op-amps and high-speed PWM maps directly onto current-loop control at switching frequencies of 100 kHz and above.
A key design consideration is supply integrity: decouple each VDD/VSS pair with 0.1 uF ceramics and keep the ADC reference (AVDD) quiet, since 12-bit accuracy degrades with switching noise. Use the dedicated PGECx/PGEDx pairs as a matched pair for ICSP programming.
This page synthesizes distributor pricing, drop-in family alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 DSPIC33CK256MC505-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： DSPIC33CK256MC505-I/PT （相同外形與佔位） — 差異在於 ADC Resolution, PWM.
DSPIC33CK256MC505-E/PT
✅ 直接替換📋 參考替代品（不在目錄中）
DSPIC33CK256MC505-H/PT
✅ 直接替換📋 參考替代品（不在目錄中）
DSPIC33CK128MC505-I/PT
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →DSPIC33CK256MP505-I/PT
✅ 直接替換📋 參考替代品（不在目錄中）
DSPIC33CK256MC505-I/PT 最大額定值與電氣特性
| Core | dsPIC33CK 16-bit DSC |
| Maximum Operating Speed | 100 MIPS (100 MHz) |
| Program Memory (Flash) | 256 KB (256K x 8) |
| Data RAM | 32 KB (32K x 8) |
| Supply Voltage Range | 3 V to 3.6 V |
| 工作溫度 | -40C to +85C (I grade) |
| ADC Resolution | 12-bit SAR |
| ADC Channels | 20 channels |
| DAC Channels | 2 x 12-bit |
| On-chip Op-Amps | Yes |
| Communication Interfaces | CAN FD, UART, SPI, I2C |
| PWM | High-speed PWM |
| General-Purpose I/O | 34 pins |
| 封裝 | 48-TQFP (7x7 mm) |
| 安裝類型 | Surface Mount |
| Programming Interface | ICSP (PGECx/PGEDx pairs) |
| RoHS 狀態 | Compliant |
DSPIC33CK256MC505-I/PT 48-tqfp (7x7 mm) 腳位配置指南
DSPIC33CK256MC505-I/PT（48-tqfp (7x7 mm) 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： DSPIC33CK256MC505-I/PT.
請參閱 資料表 以查看完整腳位配置。
典型應用
DSPIC33CK256MC505-I/PT 適用於 6 應用s: Brushless DC / PMSM Motor Control, Digital Power Conversion (LLC, Totem-Pole PFC), Automotive and Industrial CAN FD Nodes, Solar Micro-Inverters and Power Optimizers, Industrial Sensing and Condition Monitoring, High-Performance General Embedded Control.
Brushless DC / PMSM Motor Control
The DSPIC33CK256MC505-I/PT fits sensorless and sensored FOC motor drives because its 100 MIPS core, 12-bit SAR ADC with simultaneous sampling, on-chip op-amps, and high-speed PWM with dead-time insertion cover the entire current-loop signal chain on one chip. In a typical PMSM drive, the op-amps amplify shunt or in-line current signals, the ADC samples phase currents at PWM frequency, and the core executes Clarke/Park transforms and PI current regulators with ample cycle margin. The 34 I/O pins support encoder, hall, and protection inputs, while CAN FD links the drive to a factory network. Cost drops because no external current-sense amplifiers are needed.
推薦
Digital Power Conversion (LLC, Totem-Pole PFC)
Digital power supplies benefit directly from the DSPIC33CK256MC505-I/PT's high-resolution PWM, fast 12-bit ADC, and 100 MHz DSP core. The PWM module supports complementary outputs, phase shifting, and adaptive dead-time, which are required for half-bridge LLC converters and totem-pole PFC stages. The ADC's fast sampling lets the controller acquire current and voltage near the midpoint of each PWM cycle for clean ripple-free readings, and the DSP engine runs PI or PR compensators at switching frequencies of 100 kHz and above. With 256 KB Flash, multiple converter topologies and telemetry features coexist in one image, and CAN FD enables rack-level communication in server and telecom power.
推薦
Automotive and Industrial CAN FD Nodes
The integrated CAN Flexible Data-Rate (CAN FD) controller makes the DSPIC33CK256MC505-I/PT a strong candidate for industrial control nodes, actuator controllers, and body/auxiliary electronic modules that need robust networking. CAN FD raises payload throughput to up to 64-byte frames at higher bit rates than classical CAN, and the on-chip controller avoids external CAN peripherals, saving BOM cost and board area. The 34 I/O pins handle sensor and actuator interfacing, while the 12-bit ADC supports local analog sensing such as position, pressure, or temperature. Note that for true AEC-Q100 automotive deployments, verify grade variants of the family before finalizing the BOM.
推薦
Solar Micro-Inverters and Power Optimizers
In solar micro-inverters, the DSPIC33CK256MC505-I/PT performs maximum-power-point tracking (MPPT), grid-synchronized inverter control, and safety monitoring in one 48-pin device. The 100 MIPS DSP core handles MPPT algorithms and grid-current shaping concurrently, the 12-bit ADC samples panel voltage/current and grid waveforms, and the high-speed PWM drives the power-stage bridges with precise dead time. The 256 KB Flash accommodates grid-code tables and anti-islanding logic for multiple regional standards. On-chip op-amps condition current-shunt signals without external amplifiers, reducing component count on boards where reliability and long service life (25-year panel lifetime expectations) drive conservative design rules.
推薦
Industrial Sensing and Condition Monitoring
Vibration, acoustic, and predictive-maintenance sensors exploit the DSPIC33CK256MC505-I/PT's DSP multiply-accumulate instructions for on-node FFT and envelope analysis, transmitting results or raw data over CAN FD or UART. The 20-channel 12-bit ADC digitizes multiple sensor channels, the two 12-bit DACs can generate test excitations or calibration waveforms, and 32 KB RAM buffers capture windows for burst analysis. Operating from a single 3.3V rail with 34 I/O pins simplifies mixed analog/digital board design, and the -40C to +85C I-grade rating covers unconditioned factory floors and outdoor enclosures. 256 KB Flash stores multiple firmware personalities or edge-analytics models with room for future updates.
推薦
High-Performance General Embedded Control
For general high-performance embedded control - robotics, HVAC, pumps, and factory automation sub-systems - the DSPIC33CK256MC505-I/PT offers MCU simplicity with DSP-class throughput. The 100 MHz core outpaces classic 16-bit MCUs while retaining deterministic single-cycle DSP math, and the integrated UART, SPI, and I2C peripherals cover most connectivity needs without external bridges. The 48-pin TQFP (7x7 mm) suits compact two-to-four-layer boards, and the large ecosystem of Microchip development tools, code examples, and motor-control libraries shortens time to market. Using one DSC across multiple products in a line consolidates firmware investment and reduces qualification effort across the portfolio.
推薦
推薦產品摘要
工程參考資料，適用於 DSPIC33CK256MC505-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 | DSPIC33CK256MC505-E/PT | DSPIC33CK256MC505-H/PT | DSPIC33CK128MC505-I/PT |
|---|---|---|---|---|
| Package | 48-TQFP (7x7 mm) | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same | 48-TQFP (7x7 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Flash Memory | 256 KB | 256 KB | 256 KB | 128 KB |
| RAM | 32 KB | 32 KB | 32 KB | 32 KB |
| ADC / Peripherals | 12-bit SAR, 20-ch, op-amps, CAN FD | 12-bit SAR, 20-ch, op-amps, CAN FD | 12-bit SAR, op-amps, CAN FD | 12-bit SAR, 20-ch, op-amps, CAN FD |
主要差異化特點
- Extended temperature option in identical footprint (對比DSPIC33CK256MC505-E/PT)
- Double the program memory of the economy variant (對比DSPIC33CK128MC505-I/PT)
- Integrated CAN FD plus on-chip op-amps (對比DSPIC33CK256MC505-H/PT)
設計說明
Supply the DSPIC33CK256MC505-I/PT from a clean 3.0V-3.6V rail (nominal 3.3V). Place 0.1 uF ceramic decoupling capacitors at every VDD/VSS pair, positioned within 2-3 mm of the pins, and add 4.7-10 uF of bulk capacitance nearby. Feed AVDD through an RC filter or ferrite bead from the digital rail so switching noise from onboard PWM does not corrupt 12-bit ADC conversions. Confirm brown-out configuration so the device does not execute code during supply ramps below 3.0V.
Reserve one matched PGECx/PGEDx pair (plus MCLR, VDD, VSS) on a 5-pin programming header per Northern Software's ICSP guidance - clock and data pins must come from the same pair (e.g., PGEC2 with PGED2). Route these traces short and away from PWM or CAN FD lines to prevent programming errors. On 4-layer boards, use a solid ground plane under the TQFP and stitch the exposed thermal pad area with vias to ground for ADC performance.
Do not treat the E-grade (DSPIC33CK256MC505-E/PT, -40C to +125C) and I-grade (-40C to +85C) parts as thermally interchangeable: estimate junction temperature using your real power dissipation and theta-JA before choosing the I grade. Also, when migrating between family members (e.g., 128 KB variant), verify configuration words and linker script memory regions - Flash size changes will break fixed-address tables placed near the end of program memory.
合規資訊
RoHS compliant / lead-free per the /PT package suffix and distributor (DigiKey, Mouser, LCSC) listings. Formal REACH and conflict-minerals declarations available from Microchip product compliance documentation.