MK12DX128VLF5557 - 50MHz Cortex-M4 MCU 128KB Flash | NXP
部品番号: MK12DX128VLF5557 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $7.95 | $7.95 |
| 10 | $7.16 | $71.60 |
| 100 | $6.36 | $636.00 |
| 500 | $5.72 | $2,860.00 |
| 1,000 | $5.08 | $5,080.00 |
MK12DX128VLF5557 概要
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory (Flash/RAM), peripherals, and I/O into one device, sitting at the taxonomy level of: microcontroller -> microprocessor -> integrated circuit -> semiconductor. Kinetis K-series MCUs are general-purpose Cortex-M devices aimed at industrial and consumer embedded designs, where deterministic real-time control, low power, and rich analog integration matter most.
Key features of the MK12DX128VLF5557 include the ARM Cortex-M4 core with DSP instructions, 128 KB program Flash for application code, a 48-pin LQFP package supporting surface-mount assembly and standard hand-solder rework, and Freescale/NXP legacy Kinetis tooling. The 50 MHz CPU clock is suitable for sensor fusion, motor control loops, and human-machine interface (HMI) applications, while the Flash density supports mid-sized embedded applications with Bluetooth stacks or graphics libraries.
Architecturally, the K12 sub-family uses the Cortex-M4 with a 3-stage pipeline, single-precision FPU, and Memory Protection Unit (MPU), paired with Kinetis peripheral IP including FlexTimer, ADC, and low-power modes. The 48-LQFP (7x7) package offers a manageable pin pitch for hand prototyping while exposing the full peripheral set.
Typical applications include industrial sensor nodes, low-end motor control, building automation, and consumer HMI panels. The K12 family is also seen in smart metering and access-control designs where 128 KB Flash fits the firmware image.
When designing with this part, verify the specific peripheral mix against your firmware's I/O requirements (UART, I2C, SPI, timers, ADC channels) and confirm the 48-LQFP footprint is acceptable for the mechanical enclosure. Note that some K12 Kinetis parts have transitioned through NXP's product lifecycle; sourcing from authorized distributors like Rochester Electronics mitigates supply-chain risk.
This page synthesizes distributor pricing, authorized-channel availability, and pin-compatible Kinetis alternatives not found in the manufacturer datasheet alone, helping engineers evaluate substitution paths for legacy Kinetis K12 designs.
ドロップイン代替品: MK12DX128VLF5557 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: MK12DX128VLF5557 （同一形状・フットプリント） — 相違点: Core, Core Architecture, Program Memory Size, Series.
クイック比較ツール — 並列比較する代替部品を選択:
MK12DX128VLF5
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MK22DX256VLF5
✅ ドロップイン✓ 在庫あり
$5.38 / 個
データシートを見る →MKV30F64VLF10
✅ ドロップイン✓ 在庫あり
$3.42 / 個
データシートを見る →MK12DX128VLF5557 最大定格＆電気的特性
| Manufacturer | NXP Semiconductors (formerly Freescale) |
| Series | Kinetis K12 |
| Core Architecture | ARM Cortex-M4 |
| Core Count | Single-Core |
| データバス幅 | 32-bit |
| CPU Max Frequency | 50 MHz |
| Program Memory Type | FLASH |
| Program Memory Size | 128 KB (128K x 8) |
| パッケージ | 48-LQFP (7x7 mm) |
| 実装タイプ | Surface Mount |
| RoHS ステータス | Compliant |
| Lead Free | Yes |
MK12DX128VLF5557 48-lqfp (7x7 mm) ピン配置ガイド
MK12DX128VLF5557 (48-lqfp (7x7 mm) パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: MK12DX128VLF5557.
詳細は データシート をご参照ください。
主な用途
MK12DX128VLF5557 の用途: 6 件s: Industrial Sensor Node, Low-End Motor Control, Building Automation Controller, Consumer HMI Panel, Smart Metering Endpoint, Access Control Reader.
Industrial Sensor Node
The MK12DX128VLF5557 fits industrial sensor nodes because its ARM Cortex-M4 core at 50 MHz runs digital filters and sensor-fusion algorithms within the 128 KB Flash budget, while the 48-LQFP (7x7) package is compatible with hand-prototyping and standard SMT lines. With on-chip ADC and Kinetis timers, it can sample multiple analog sensors, run a control loop, and publish results over UART/CAN. Compared to a switching-based design, the Cortex-M4 integrates DSP extensions that handle FIR/IIR filtering without a coprocessor, reducing BOM cost and PCB area. Place it on a 4-layer PCB with decoupling caps within 5 mm of each power pin for clean analog reads in electrically noisy industrial environments.
おすすめ
Low-End Motor Control
For low-end brushed DC or stepper motor control the MK12DX128VLF5557's 50 MHz Cortex-M4 executes PWM generation, commutation logic, and current sensing in a single chip without an external DSP. The 128 KB Flash fits a 6-step commutation table plus speed PI loop, while the 48-LQFP package exposes enough GPIO for three-phase PWM, hall-sensor inputs, and fault pins. Kinetis FlexTimer peripherals allow precise center-aligned PWM with dead-time insertion, critical for half-bridge drivers. Estimate: at 48 MHz system clock the Cortex-M4 sustains ~50 MIPS, leaving headroom for a serial command interface alongside the motor control loop.
おすすめ
Building Automation Controller
In building automation (HVAC, lighting, access control) the MK12DX128VLF5557 acts as a zone controller, running scheduling logic, keypad/display driving, and protocol stacks (Modbus, BACnet) within 128 KB Flash. Its Cortex-M4 DSP extensions accelerate the bit-manipulation routines common in communication stacks. The 48-LQFP (7x7 mm) package fits into small controller enclosures and supports hand rework for low-volume runs. Compared to a Cortex-M0+ design, the M4 provides faster protocol parsing with similar power consumption. Use the Kinetis low-power modes for battery-backed sensor applications in smart home ecosystems.
おすすめ
Consumer HMI Panel
The MK12DX128VLF5557 suits consumer HMI panels (appliance UI, simple touch interfaces) because the Cortex-M4 runs LVGL/embedded graphics libraries within 128 KB Flash while leaving room for application logic. The 48-LQFP footprint fits behind the display panel and exposes enough GPIO for capacitive touch I2C, segment/character LCD, and rotary encoders. Kinetis peripherals provide PWM for LED backlight dimming and DMA-driven SPI for display refresh. Trade-off vs Cortex-M7: slower graphics rendering, but lower BOM cost and simpler PCB routing in the 7x7 mm LQFP land pattern.
おすすめ
Smart Metering Endpoint
For electricity/water/gas metering endpoints the MK12DX128VLF5557 offers the Cortex-M4 DSP extensions to compute RMS voltage/current and active/reactive power in firmware, eliminating a dedicated metering ASIC. The 128 KB Flash holds DLMS/COSEM or wireless M-Bus protocol stacks while the 48-LQFP fits behind the meter's display. Kinetis low-power modes extend battery life in disconnected/off-grid smart-meter endpoints. The single-precision FPU accelerates power-quality math while keeping MCU power dissipation low.
おすすめ
Access Control Reader
Access-control card readers benefit from the MK12DX128VLF5557's Cortex-M4 DSP, which accelerates cryptographic operations (AES, hashing) used in RFID/NFC and OSDP secure channels. The 128 KB Flash fits the secure-element firmware plus application logic, while 48-LQFP leaves room for RS-485, Wiegand, and buzzer/LED I/O. Kinetis timers handle precise Wiegand bit timing without jitter. Compared to M0+ designs, the M4 reduces transaction latency when running crypto libraries - meaningful at peak reader traffic.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: MK12DX128VLF5557 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | MK12DX128VLF5 | MK22DX256VLF5 | MK22FX512AVLK12 | MKV30F64VLF10 |
|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 48-LQFP (7x7 mm) | 48-LQFP (7x7 mm) - same | 48-LQFP (7x7 mm) - same | 80-LQFP - different | 48-LQFP (7x7 mm) - same |
| Core | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 | ARM Cortex-M4 |
| Max CPU Frequency | 50 MHz | 50 MHz | 50 MHz | 120 MHz | 50 MHz |
| Flash Memory | 128 KB | 128 KB | 256 KB | 512 KB | 64 KB |
| Pin Count | 48 | 48 | 48 | 80 | 48 |
| Family | Kinetis K12 | Kinetis K12 | Kinetis K22 | Kinetis K22 | Kinetis KV30 |
主な差別化要因
- K12 family balance of Flash density and 48-LQFP footprint （vs MK22FX512AVLK12)
- Same-family variant for drop-in replacements （vs MK12DX128VLF5)
- Direct K22 migration path on the same footprint （vs MK22DX256VLF5)
設計ノート
At 50 MHz with all peripherals active, the MK12DX128VLF5557 in 48-LQFP (7x7 mm) typically dissipates under 200 mW in normal embedded workloads. The exposed-pad-less LQFP has a modest theta_JA around 60-70 C/W; verify junction rise in enclosed enclosures. Estimated: at 25 C ambient and 150 mW dissipation, junction rises roughly 9-11 C - well within the industrial operating window. Forced airflow is rarely required at this power, but derate for ambient above 70 C.
Place 100 nF decoupling caps within 5 mm of every VDD pin and a bulk 4.7 uF tantalum or ceramic near the package. Route the SWD clock and SWDIO as short, impedance-controlled traces (50 ohm) and keep them at least 3x trace-width away from analog and PWM signals to avoid coupling. For noise-sensitive ADC applications, dedicate one VDD pin to analog supply and add a ferrite bead between digital and analog VDD rails.
Verify the exact peripheral mix against the K12 sub-family datasheet before committing layout: some K12 Kinetis parts disable peripherals or differ in timer/ADC channel count vs K10/K20. When migrating from MK12DX128VLF5557 to MK22DX256VLF5, confirm that all K12-only signals (FlexTimer channels, low-power pin wakeup) are remapped - the K22 die has a different peripheral mux. Lastly, source through authorized channels (Rochester Electronics, JLCPCB, DigiKey Marketplace) to avoid counterfeit Kinetis parts.
コンプライアンス情報
RoHS and lead-free per NXP product page. Not AEC-Q100 qualified (general-purpose industrial/consumer). Halogen-free status not surfaced in distributor listings.