MK21FX512VLQ12 - 120MHz Cortex-M4 MCU 512KB | NXP
부품 번호: MK21FX512VLQ12 ✗ 단종| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $8.42 | $8.42 |
| 10 | $7.58 | $75.80 |
| 100 | $6.74 | $674.00 |
| 500 | $6.1 | $3,050.00 |
| 1,000 | $5.55 | $5,550.00 |
MK21FX512VLQ12 개요
A microcontroller unit (MCU) is a single-chip embedded processor that integrates a CPU core, memory arrays, and a rich set of peripherals on one die, sitting within the broader hierarchy of semiconductor devices as a system-on-chip for embedded control. Unlike a general-purpose processor, an MCU executes dedicated firmware for real-time control, sensing, and connectivity tasks in a power-efficient manner.
Key features of the MK21FX512VLQ12 include hardware cryptography and tamper detection for security-sensitive designs, a USB full-/low-speed On-The-Go controller with on-chip transceiver and device charger-detect capability, and a floating-point unit inherited from the Cortex-M4 core for efficient DSP and motor-control mathematics.
The communication peripheral set comprises two SPI modules, two I2C modules, four UART modules, and an I2S audio interface, enabling multi-bus system designs without external expanders. Analog integration covers high-speed ADCs and comparators per the K21 sub-family datasheet, and flexible clocking supports low-power operation targets typical of cost-sensitive industrial applications.
Typical applications include industrial automation and control nodes, IoT edge devices, robotics controllers, consumer appliances, and secure portable equipment where the anti-tamper and hardware encryption engine reduces bill-of-materials cost for security.
Design consideration: as this device is listed NRND (Not Recommended for New Designs) by NXP, new designs should evaluate pin-compatible successors or confirm long-term supply before committing; the 144-LQFP requires careful decoupling of the multiple VDD/VSS pairs per the manufacturer datasheet.
This page synthesizes distributor listings, lifecycle status, drop-in alternatives, and practical design guidance not found in the manufacturer datasheet alone, with pricing verified as of 2026-10-18.
드롭인 대체품: MK21FX512VLQ12 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: MK21FX512VLQ12 (동일 폼 팩터 및 풋프린트) — 차이점: Mounting Type, Package.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
MK21FX512VLQ10
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
MK21FN1M0VLQ12
✅ 드롭인 ⚠️ 사양 미검증✓ 재고 있음
$9.2 / 개
데이터시트 보기 →MK21DX256VLQ5
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
MK21DN512VLQ5
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
MK22FX512VLQ12
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
MK21FX512VLQ12 최대 정격 & 전기적 특성
| Core Processor | ARM Cortex-M4 (Cortex-M4F) |
| Core Size | 32-bit |
| 최대 클록 주파수 | 120 MHz |
| Program Memory Size | 512 KB (512K x 8) Flash |
| FlexMem Size | 128 KB (configurable flash/EEPROM) |
| RAM Size | 128 KB |
| 패키지 | 144-LQFP (20 x 20 mm) |
| 실장 유형 | Surface Mount |
| USB Controller | USB full-/low-speed OTG with on-chip transceiver and charger detect |
| SPI Modules | 2 |
| I2C Modules | 2 |
| UART Modules | 4 |
| I2S Module | 1 |
| Security Features | Hardware encryption, tamper detection |
| MSL 레벨 | 3 (168 Hours) |
| HTSUS Code | 8542.31.0001 |
| REACH Status | REACH Unaffected |
| Product Family | Kinetis K21 120 MHz (K21F sub-family) |
MK21FX512VLQ12 144-lqfp (20 x 20 mm) 핀 구성 가이드
MK21FX512VLQ12(144-lqfp (20 x 20 mm) 패키지)의 핀 구성입니다. 이 디지털 IC에는 GPIO, 통신 인터페이스(UART, SPI, I2C), 전원 핀이 포함되어 있습니다. 대체 핀 기능과 구성 옵션은 제조사 데이터시트를 참조하십시오. 임베디드 시스템 설계와 PCB 레이아웃에 필수적입니다.
다음에 대한 상세 핀아웃 데이터 없음: MK21FX512VLQ12.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
MK21FX512VLQ12 적합 용도: 6 애플리케이션s: Industrial Automation and Control, IoT Edge Devices, Robotics Controllers, Secure Portable and Payment Devices, Consumer Appliances, Test and Measurement Equipment.
Industrial Automation and Control
The MK21FX512VLQ12 fits industrial control nodes where its 120 MHz Cortex-M4 with hardware FPU executes PID and field-oriented control loops deterministically, while four UARTs and two SPI modules link drives, sensors, and HMIs. The 128 KB SRAM buffers communication stacks and logging data, and industrial operating ratings support factory-floor environments. Designers should note the NRND status and plan migration paths for long-lifetime industrial programs; existing control boards benefit from the rich K21 peripheral mix without external interface chips.
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IoT Edge Devices
For IoT edge nodes, the MK21FX512VLQ12 combines a 120 MHz core with low-power operating modes typical of the Kinetis K21 family, so sensor sampling, protocol translation, and local decision logic run efficiently. The 512 KB flash holds wireless connectivity stacks and OTA bootloader code, while 128 KB FlexMem emulates EEPROM for calibration and configuration storage. Hardware encryption offloads TLS-style cipher workloads from firmware. USB OTG simplifies commissioning and firmware updates in the field via a standard connector.
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Robotics Controllers
Robotics motion controllers benefit from the MK21FX512VLQ12's 120 MHz Cortex-M4F floating-point core, which executes kinematics and servo loop mathematics in hardware rather than software emulation. Multiple SPI and UART channels coordinate encoders, motor drivers, and host links simultaneously, while high-speed ADCs sample current shunts for torque control. The 144-LQFP exposes ample GPIO for limit switches and safety interlocks. Its industrial portfolio heritage (Freescale Kinetis) provides mature toolchain and SDK support for robotics teams.
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Secure Portable and Payment Devices
The K21F sub-family's differentiator is on-chip hardware encryption plus tamper detection, making the MK21FX512VLQ12 attractive for portable terminals, metering, and licensed equipment that must protect keys and firmware. The USB OTG controller with charger detect enables both data transfer and charging negotiation from one port, important in battery-powered handhelds. The 128 KB FlexMem stores transaction logs in emulated EEPROM with wear leveling. Its 120 MHz core keeps cryptographic and UI response times short without a second processor.
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Consumer Appliances
Cost-sensitive appliance control boards use the MK21FX512VLQ12 for its balance of 120 MHz performance, generous 512 KB flash for UI frameworks and communication stacks, and integrated analog for temperature and current sensing. Four UARTs handle touch panels, Wi-Fi modules, and cloud gateways concurrently; I2C manages sensors and EEPROMs. The 144-LQFP package provides the I/O count for displays, relays, and keypad matrices in a single controller, reducing board-level component count versus multi-chip alternatives.
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Test and Measurement Equipment
Bench instruments and data loggers exploit the MK21FX512VLQ12's high-speed ADCs, precise timing peripherals, and USB OTG port for PC connectivity. The 120 MHz Cortex-M4 with FPU performs calibration math, FFT-based analysis, and trigger logic in real time, while 128 KB SRAM sustains deep sample buffering. Two SPI modules stream results to displays or external converters, and I2S supports audio-band measurement front ends. The 144-pin LQFP delivers the pin count needed for multi-channel analog front ends on one controller.
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추천 제품 요약
엔지니어링 참조 데이터: MK21FX512VLQ12 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | MK21FX512VLQ10 | MK21FN1M0VLQ12 | MK21DX256VLQ5 | MK21DN512VLQ5 | MK22FX512VLQ12 |
|---|---|---|---|---|---|---|
| Package | 144-LQFP (20 x 20 mm) | 144-LQFP - same | 144-LQFP - same | 144-LQFP - same | 144-LQFP - same | 144-LQFP - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Core / Max Clock | Cortex-M4, 120 MHz | Cortex-M4, 100 MHz | Cortex-M4, 120 MHz | Cortex-M4, 100 MHz | Cortex-M4, 100 MHz | Cortex-M4, 120 MHz |
| Flash | 512 KB | 512 KB | 1 MB | 256 KB | 512 KB (split program/FlexNVM) | 512 KB |
| SRAM | 128 KB | 128 KB | 128 KB | 64 KB | 128 KB | 128 KB |
주요 차별점
- Hardware encryption with tamper detection (vs MK21DX256VLQ5)
- Fastest K21 144-LQFP speed grade (vs MK21FX512VLQ10)
- Balanced memory without over-provisioning (vs MK21FN1M0VLQ12)
설계 노트
The 144-LQFP (20 x 20 mm) exposes multiple VDD/VSS pairs that must each be decoupled with 100 nF ceramic capacitors placed within 2-3 mm of the pins, plus bulk capacitance near the regulator. Follow the power connection guidelines in the K21 technical data sheet (K21P80M50SF4 Rev. 4.1): keep VDDA/VSSA on a quiet analog island with an RC or ferrite filter from the digital rail to preserve ADC accuracy. Use 0.5 mm pitch escape routing and allow at least 4 mil trace/space.
This part is NRND per the NXP product page. Before releasing a new PCB revision around the MK21FX512VLQ12, confirm supply lifetime with NXP and arrange a last-time-buy buffer, or pre-qualify a drop-in K21 family variant (e.g., MK21FX512VLQ10 in the same 144-LQFP footprint). Also note the SWD/JTAG debug muxing and EZPORT boot modes: pull the appropriate boot configuration pins correctly at reset or the device may enter bootloader instead of executing flash code.
Estimated: at 120 MHz with all peripherals active, K21-family core current is typically in the tens of mA (verify exact IDD from the datasheet power tables for your configuration). At 3.3 V and ~50 mA, dissipation is ~0.17 W; the 144-LQFP theta_JA of roughly 40-50 C/W over a standard JEDEC 4-layer board yields only ~8 C junction rise, so no heatsink is required. Ensure your board follows the datasheet-recommended thermal pad/via pattern if operating at the top of the industrial temperature range.
규정 준수 정보
REACH status: REACH Unaffected (per Rochester Electronics listing). HTSUS: 8542.31.0001. RoHS/lead-free status not stated in provided data - verify on NXP product page.