DSPIC33CK128MC502T-I/2N - 100MHz 16-bit DSC 128KB Flash | Microchip
料号： DSPIC33CK128MC502T-I/2N ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $3.86 | $3.86 |
| 10 | $3.47 | $34.70 |
| 25 | $3.29 | $82.25 |
| 100 | $2.98 | $298.00 |
| 1,000 | $2.55 | $2,550.00 |
DSPIC33CK128MC502T-I/2N 概述
A digital signal controller combines the computational capability of a DSP with the peripheral integration and control architecture of a microcontroller. Within the embedded hierarchy, the DSC sits between general-purpose MCUs and dedicated DSPs, making it the preferred choice in power conversion and motor control where fast, deterministic interrupt response and precision analog sampling must coexist. Microchip's dsPIC33CK family implements this concept with a single-core, high-performance pipeline and tightly coupled PWM and ADC peripherals.
Key features of the DSPIC33CK128MC502 include a 100 MHz (100 MIPS) dsPIC DSC core, on-chip operational amplifiers, a 12-bit ADC supporting high-rate conversions of motor phase currents, high-resolution PWM peripherals suitable for Field-Oriented Control (FOC), and CAN FD for robust industrial and automotive networking. The device operates from a 3.0 V to 3.6 V supply and offers 21 general-purpose I/O lines.
Architecturally, the dsPIC33CK core executes most instructions in a single cycle with a zero-cycle (zero-overhead) DSP multiply-accumulate path, providing predictable worst-case timing that is critical for current-loop control at switching frequencies of 100 kHz and above. The ADC can be coupled with the PWM trigger hardware to sample exactly at the center of the PWM carrier, minimizing switching-noise-induced conversion errors without CPU intervention.
Typical applications include brushless DC and PMSM motor drives using sensorless FOC, digital power supplies such as LLC and totem-pole PFC converters, CAN FD-connected industrial nodes, and high-intensity LED drivers. The integrated op-amps reduce external component count in current-sensing signal chains.
Design consideration: the 3.0 V to 3.6 V supply range means a 5 V system bus requires an LDO or buck regulator ahead of the VDD pin, and decoupling plus the internal regulator capacitor must follow the datasheet layout guidance for noise immunity.
This page synthesizes distributor pricing, drop-in family alternatives, pinout data, and practical design notes not consolidated in the manufacturer datasheet alone. Pricing references are as of 2026-09-22.
直接替换替代料： DSPIC33CK128MC502T-I/2N ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
DSPIC33CK256MC502T-I/2N
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DSPIC33CK64MC502T-I/2N
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DSPIC33CK32MC502T-I/2N
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DSPIC33CK128MC502T-E/2N
✅ 直接替换📋 参考替代料（不在目录中）
DSPIC33CK256MC501T-I/2N
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DSPIC33CK128MC502T-I/2N 最大额定值与电气特性
| Core | dsPIC33CK 16-bit DSC |
| 最大时钟频率 | 100 MHz (100 MIPS) |
| Program Memory Size | 128 KB (128K x 8) FLASH |
| Data RAM Size | 16 KB |
| Supply Voltage Range | 3 V to 3.6 V |
| Number of I/O | 21 |
| ADC Resolution | 12 bit |
| Communication Interfaces | CAN FD, UART, SPI, I2C |
| PWM | High-resolution PWM |
| Integrated Op-Amps | Yes (on-chip op-amps) |
| 封装 | 28-UQFN (6x6 mm), code 2N |
| 安装类型 | Surface Mount |
| 工作温度 | -40C to +85C (I grade) |
| Packaging | Tape & Reel (T suffix) |
| Program Memory Type | FLASH |
| 数据总线宽度 | 16 bit |
DSPIC33CK128MC502T-I/2N 引脚配置
| 引脚 1 | MCLR — Master clear reset input / programming voltage |
| 引脚 2 | AN0/RA0 — Analog input 0 / port A bit 0 |
| 引脚 3 | AN1/RA1 — Analog input 1 / port A bit 1 |
| 引脚 4 | AN2/RA2 — Analog input 2 / port A bit 2 |
| 引脚 5 | AN3/RA3 — Analog input 3 / port A bit 3 |
| 引脚 6 | AN4/RB0 — Analog input 4 / port B bit 0 |
| 引脚 7 | VDD — Positive supply (3.0 V to 3.6 V) |
| 引脚 8 | VSS — Ground reference |
| 引脚 9 | OSC1/RB4 — Oscillator input / port B bit 4 |
| 引脚 10 | OSC2/CLKO/RB5 — Oscillator output / clock out / port B bit 5 |
| 引脚 11 | AN9/RB3/PGD1 — Analog input 9 / port B bit 3 / In-Circuit Serial Programming data |
| 引脚 12 | AN8/RB2/PGC1 — Analog input 8 / port B bit 2 / In-Circuit Serial Programming clock |
| 引脚 13 | AN10/RB1 — Analog input 10 / port B bit 1 |
| 引脚 14 | AN11/RB15 — Analog input 11 / port B bit 15 |
| 引脚 15 | VSS — Ground reference |
| 引脚 16 | VDD — Positive supply (3.0 V to 3.6 V) |
| 引脚 17 | AN12/RB14 — Analog input 12 / port B bit 14 |
| 引脚 18 | AN13/RB13/FLTA — Analog input 13 / port B bit 13 / PWM fault input |
| 引脚 19 | RB12 — Port B bit 12 (remappable peripheral pin) |
| 引脚 20 | SOSCI/RB11 — Secondary oscillator input / port B bit 11 |
| 引脚 21 | SOSCO/RB10 — Secondary oscillator output / port B bit 10 |
| 引脚 22 | RB9 — Port B bit 9 (remappable peripheral pin) |
| 引脚 23 | RB8 — Port B bit 8 (remappable peripheral pin) |
| 引脚 24 | RB7 — Port B bit 7 (remappable peripheral pin) |
| 引脚 25 | RB6 — Port B bit 6 (remappable peripheral pin) |
| 引脚 26 | VCAP — Internal regulator capacitor connection |
| 引脚 27 | AVDD — Analog supply pin |
| 引脚 28 | AVSS — Analog ground pin |
典型应用
DSPIC33CK128MC502T-I/2N 适用于 6 应用s: Sensorless FOC Motor Drives, Digital Power Conversion, Industrial CAN FD Nodes, High-Intensity LED Lighting, Precision Analog Sensing Systems, Battery-Powered Portable Equipment.
Sensorless FOC Motor Drives
The DSPIC33CK128MC502T-I/2N fits brushless DC and PMSM sensorless drives because its 100 MHz (100 MIPS) core executes Field-Oriented Control current loops deterministically at PWM frequencies above 100 kHz. The 12-bit ADC samples phase currents via hardware triggers synchronized to the high-resolution PWM center, eliminating software jitter and switching-noise conversion errors. On-chip op-amps amplify shunt-resistor signals directly, removing external amplifier stages. Placed as the single controller between the gate-driver stage and the CAN FD bus, it handles current loop, speed loop, and position estimation in one chip, cutting BOM cost versus discrete MCU-plus-op-amp designs.
推荐
Digital Power Conversion
Digital power supplies such as LLC resonant converters, totem-pole PFC, and DC-DC modules benefit from the DSPIC33CK128MC502's 100 MIPS core and high-resolution PWM, which achieve sub-nanosecond-effective duty-cycle resolution for precise duty and phase control. The 12-bit ADC, triggered by the PWM hardware, samples output voltage and inductor current exactly where switching noise is minimal. Its deterministic single-cycle MAC instructions keep control-law updates inside one switching period even with nonlinear compensation. The 3.0 V to 3.6 V supply simplifies isolated-side bias design, and the CAN FD interface supports digital-power telemetry and PMBus-style configuration in rack power systems.
推荐
Industrial CAN FD Nodes
In factory automation and industrial sensing nodes, the DSPIC33CK128MC502 provides a CAN FD interface alongside a 100 MHz processing core, allowing local control algorithms and high-throughput fieldbus communication in a single 28-pin device. The 21 remappable I/O pins let designers route SPI, I2C, UART, and PWM to optimal package pins via Peripheral Pin Select, simplifying PCB routing in dense 6x6 mm layouts. Its 128 KB FLASH accommodates a CANopen or J1939 stack plus application logic and a bootloader. Operating from -40C to +85C (I grade), it suits cabinet-based industrial electronics where extended automotive temperatures are unnecessary.
推荐
High-Intensity LED Lighting
LED drivers for stage lighting, architectural luminaires, and horticultural fixtures use the DSPIC33CK128MC502's high-resolution PWM for flicker-free dimming with deep dimming ratios, while the 12-bit ADC closes the current-regulation loop for stable lumen output. The 100 MIPS core can run switching-regulator control plus communication (DMX, DALI over UART, or CAN FD) concurrently. Integrated op-amps condition current-shunt feedback without extra components, keeping the driver board compact. The 128 KB FLASH leaves room for color-mixing algorithms and calibration tables, and the -40C to +85C operating range covers outdoor luminaire environments when properly derated.
推荐
Precision Analog Sensing Systems
The DSPIC33CK128MC502 serves as a smart sensing front end where its on-chip op-amps buffer sensor signals, the 12-bit ADC digitizes them at high rates, and the 100 MIPS DSP engine applies digital filtering (FIR/IIR) in real time. Typical sensor chains - pressure bridges, thermocouples via external front ends, or current sensors - connect directly to the op-amp inputs, reducing board area in the 6x6 mm footprint. Processed results stream out over CAN FD or UART with timestamps. The 16 KB RAM holds filter state and buffering for burst capture, making the part suitable for vibration, current, and power-quality monitoring modules.
推荐
Battery-Powered Portable Equipment
For portable and handheld industrial tools, the DSPIC33CK128MC502 offers a compact 28-UQFN 6x6 mm package and power-management features that support battery operation at 3.3 V directly from a single Li-ion cell via an LDO. The controller manages battery charging state machines, drives the power stage through high-resolution PWM, and reports status over CAN FD or UART. Its deterministic core handles motor commutation in cordless tools while sampling pack current through the integrated op-amps. The 128 KB FLASH supports field-updatable firmware with safe bootloaders, and the -40C to +85C range covers typical portable equipment environmental requirements.
推荐
推荐产品汇总
工程参考数据： DSPIC33CK128MC502T-I/2N ——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 | DSPIC33CK256MC502T-I/2N | DSPIC33CK64MC502T-I/2N | DSPIC33CK32MC502T-I/2N | DSPIC33CK128MC502T-E/2N | DSPIC33CK256MC501T-I/2N |
|---|---|---|---|---|---|---|
| Package | 28-UQFN (6x6 mm, 2N) | 28-UQFN (6x6 mm, 2N) - same | 28-UQFN (6x6 mm, 2N) - same | 28-UQFN (6x6 mm, 2N) - same | 28-UQFN (6x6 mm, 2N) - same | 28-UQFN (6x6 mm, 2N) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Core Speed | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) | 100 MHz (100 MIPS) |
| FLASH Program Memory | 128 KB | 256 KB | 64 KB | 32 KB | 128 KB | 256 KB |
| RAM | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB | 16 KB |
| CAN FD | Yes | Yes | Yes | Yes | Yes | No |
| Operating Temperature | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +85C (I grade) | -40C to +125C (E grade) | -40C to +85C (I grade) |
| Integrated Op-Amps | Yes | Yes | Yes | Yes | Yes | Yes |
关键差异点
- Optimal memory-cost balance in the dsPIC33CK50X family （对比 DSPIC33CK256MC502T-I/2N)
- Guaranteed drop-in extended-temperature path （对比 DSPIC33CK128MC502T-E/2N)
- Integrated op-amps and hardware-synchronized ADC sampling （对比 DSPIC33CK32MC502T-I/2N)
设计说明
The DSPIC33CK128MC502 requires a 3.0 V to 3.6 V supply. In 5 V systems, generate 3.3 V with an LDO or small buck and place 100 nF ceramic decoupling at each VDD pin (pins 7 and 16) plus 10 uF bulk per power domain. Connect the VCAP pin (pin 26) to its recommended low-ESR capacitor per the datasheet - this stabilizes the internal core regulator and is a common cause of brownout misbehavior if mistyped. Separate AVDD (pin 27) with an RC filter from the digital rail for best ADC accuracy.
The 6x6 mm UQFN has a fine pitch with an exposed thermal pad; connect the pad to a grounded copper pour with an array of vias to improve heat spreading and reduce ground impedance. Route high-resolution PWM outputs to gate drivers as short, matched traces to minimize propagation skew between phases, which directly affects dead-time accuracy in FOC drives. Keep the analog input traces (AN0-AN13) away from PWM switching nodes and route them over a continuous ground plane to protect the 12-bit ADC from switching noise.
Most I/O on this device is remapped through Peripheral Pin Select (PPS); forgetting to configure PPS registers (or configuring them while the lock bit is still set) is the most common bring-up failure. Also note the I grade is rated to +85C - for enclosures exceeding that, select the DSPIC33CK128MC502T-E/2N (E grade, +125C), which is footprint-identical. During flash programming, MCLR must be raised to the programming voltage; never use MCLR as a general input tied to 5 V logic without level shifting.
合规信息
RoHS/lead-free status consistent with Microchip standard production policy for active dsPIC33CK devices; obtain formal SGS/material declarations from the Microchip environmental portal for the exact part number.
