MK21FN1M0VLQ12 - 120MHz Cortex-M4 MCU, 1MB Flash | NXP
MPN: MK21FN1M0VLQ12 ✗ Akhir HidupMK21FN1M0VLQ12 Ringkasan
What is a microcontroller? A microcontroller is a single-chip computer that integrates a CPU core, program memory (Flash), data memory (SRAM), and peripheral interfaces into one package. Microcontrollers (MCUs) -> ARM Cortex-M microcontrollers -> Cortex-M4 with FPU -> Kinetis K series -> K21F sub-family. The K21F targets cost-sensitive, low-power, secure-connected applications and is positioned between the K10 (entry) and K60 (USB+Ethernet+high-speed) families within NXP's Kinetis portfolio.
Key features include a Cortex-M4 core with single-precision FPU and DSP instructions, 1MB Flash for application code, 128KB SRAM for data/buffers, Full-Speed USB 2.0 device/host/OTG with on-chip transceiver, hardware AES-128 encryption, secure anti-tamper pins, a 16-bit SAR ADC with up to 24 channels, two 12-bit DACs, and a low-power segment-LCD controller option. The 144-LQFP package exposes all major peripherals for maximum design flexibility.
The MK21FN1M0VLQ12 uses a Cortex-M4 core delivering 1.25 Dhrystone MIPS per MHz, with single-cycle MAC and hardware FPU for DSP workloads. The integrated power management supports multiple low-power modes (Wait, Stop, VLPR, VLPS) and an internal voltage regulator. The 1MB Flash is organized in a dual-bank arrangement for in-application programming and EEPROM emulation. Hardware AES-128 and tamper detection modules protect against software and physical attacks on connected endpoints.
Typical applications include USB-connected industrial control systems, secure point-of-sale (POS) terminals, anti-tamper smart meters, low-power human-machine interfaces (HMI) with segment LCD, consumer medical devices, and home/building automation gateways. The combination of Full-Speed USB, hardware crypto, and low-power Run/Stop modes makes the part especially suited to battery-powered secure peripherals.
When designing with the MK21FN1M0VLQ12, carefully review the decoupling network: place 100nF X7R capacitors as close as possible to every VDD/VSS pair, with bulk 4.7uF X5R near the regulator output. For USB, the D+/D- traces must be 90 ohm differential with no stubs; route over a continuous ground plane. Use the tamper pins to short/lock memory on intrusion, and select the boot mode via the security/boot configuration pins.
This page synthesizes distributor pricing, K21/K22/K24 drop-in and migration alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers select the right Kinetis K2x variant for their USB-connected secure design.
Alternatif penggantian untuk MK21FN1M0VLQ12 — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian MK21FN1M0VLQ12 (sama faktor bentuk dan footprint) — berbeda di dalam Package, Mounting Type, ADC, Maximum Clock Frequency, Core.
MK21FN1M0VLQ12R
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
MK22FN1M0AVLQ12
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
MK24FN1M0VLQ12
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
MK22FN1M0VLQ12
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
MK24FN1M0VLQ12R
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
MK21FN1M0VLQ12 Rating Maksimal & Karakteristik Listrik
| Core | ARM Cortex-M4 with FPU and DSP |
| Bit Width | 32-bit |
| Frekuensi Bawah Maximum | 120 MHz |
| Program Memory (Flash) | 1 MB (1M x 8) |
| RAM Size | 128 KB |
| Paket | 144-LQFP (20x20 mm) |
| Tegangan Pemuat | 1.71 V to 3.6 V |
| USB Interface | USB 2.0 Full-Speed device/host/OTG with on-chip PHY |
| Hardware Encryption | AES-128 |
| Anti-Tamper Pins | Yes (secure tamper detection) |
| ADC | 16-bit SAR, multi-channel |
| DAC | 12-bit |
| Suhu Kerja | -40 C to +105 C (V) |
| Tipe Mounting | Surface Mount (LQFP) |
| Status RoHS | Compliant |
| Lead Free | Yes |
| Lifecycle | NRND (Not Recommended for New Designs) |
Konfigurasi Pin MK21FN1M0VLQ12
| Pin produk 1 | PTB0 — GPIO / ADC0_SE0 / FTM0_CH0 |
| Pin produk 2 | PTB1 — GPIO / ADC0_SE1 / FTM0_CH1 |
| Pin produk 3 | PTB2 — GPIO / ADC0_SE2 / FTM0_CH2 |
| Pin produk 4 | PTB3 — GPIO / ADC0_SE3 / FTM0_CH3 |
| Pin produk 5 | VDD — Digital supply voltage |
| Pin produk 6 | VSS — Digital ground |
| Pin produk 7 | PTA0 — JTAG_TCLK / SWD_CLK |
| Pin produk 8 | PTA1 — JTAG_TDI / SWD_DIO |
| Pin produk 9 | PTA2 — JTAG_TDO / SWO |
| Pin produk 10 | PTA3 — JTAG_TMS / SWD_DIO |
| Pin produk 11 | PTA4 — JTAG_TRSTb |
| Pin produk 12 | PTA5 — RESET_b |
| Pin produk 13 | PTA6 — GPIO / FTM0_CH3 / I2S_RX_BCLK |
| Pin produk 14 | PTA7 — GPIO / FTM0_CH4 / I2S_RX_FS |
| Pin produk 15 | PTA8 — GPIO / FTM0_CH5 / I2S_RX_MCLK |
| Pin produk 16 | PTA9 — GPIO / FTM0_CH6 / I2S_RX_D |
| Pin produk 17 | PTA10 — GPIO / FTM2_CH0 / I2S_TX_BCLK |
| Pin produk 18 | PTA11 — GPIO / FTM2_CH1 / I2S_TX_D |
| Pin produk 19 | PTA12 — GPIO / FTM2_CH2 / I2S_TX_FS |
| Pin produk 20 | PTA13 — GPIO / FTM2_CH3 / I2S_TX_MCLK |
| Pin produk 21 | PTA14 — GPIO / FTM1_CH0 / I2S_CLKIN |
| Pin produk 22 | PTA15 — GPIO / FTM1_CH1 / I2S_CLKIN |
| Pin produk 23 | PTA16 — GPIO / SPI0_SIN / FTM0_CH5 |
| Pin produk 24 | PTA17 — GPIO / SPI0_SOUT / FTM0_CH6 |
| Pin produk 25 | PTA18 — GPIO / SPI0_SCK / FTM0_CH7 |
| Pin produk 26 | PTA19 — GPIO / SPI0_PCS0 / FTM2_FLT3 |
| Pin produk 27 | VDD — Digital supply voltage |
| Pin produk 28 | VSS — Digital ground |
| Pin produk 29 | PTC0 — GPIO / FTM0_CH0 / EXTRG_IN |
| Pin produk 30 | PTC1 — GPIO / FTM0_CH1 / EXTRG_IN |
| Pin produk 31 | PTC2 — GPIO / FTM0_CH2 / CMP1_OUT |
| Pin produk 32 | PTC3 — GPIO / FTM0_CH3 / CMP2_OUT |
| Pin produk 33 | PTC4 — GPIO / FTM0_CH4 / USB_SOF_OUT |
| Pin produk 34 | PTC5 — GPIO / FTM0_CH5 / CMP1_OUT |
| Pin produk 35 | PTC6 — GPIO / FTM0_CH6 / CMP2_OUT |
| Pin produk 36 | PTC7 — GPIO / FTM0_CH7 / CMP3_OUT |
| Pin produk 37 | PTC8 — GPIO / FTM3_CH4 / ADC1_SE8 |
| Pin produk 38 | PTC9 — GPIO / FTM3_CH5 / ADC1_SE9 |
| Pin produk 39 | PTC10 — GPIO / FTM3_CH6 / ADC1_SE10 |
| Pin produk 40 | PTC11 — GPIO / FTM3_CH7 / ADC1_SE11 |
| Pin produk 41 | PTC12 — GPIO / FTM3_CH0 / ADC1_SE12 |
| Pin produk 42 | PTC13 — GPIO / FTM3_CH1 / ADC1_SE13 |
| Pin produk 43 | PTC14 — GPIO / FTM3_CH2 / ADC1_SE14 |
| Pin produk 44 | PTC15 — GPIO / FTM3_CH3 / ADC1_SE15 |
| Pin produk 45 | PTC16 — GPIO / FTM3_CH4 / ADC1_SE16 |
| Pin produk 46 | PTC17 — GPIO / FTM3_CH5 / ADC1_SE17 |
| Pin produk 47 | PTC18 — GPIO / FTM3_CH6 / ADC1_SE18 |
| Pin produk 48 | PTC19 — GPIO / FTM3_CH7 / ADC1_SE19 |
| Pin produk 49 | VDD — Digital supply voltage |
| Pin produk 50 | VSS — Digital ground |
| Pin produk 51 | PTD0 — GPIO / FTM0_CH0 / SPI1_PCS0 |
| Pin produk 52 | PTD1 — GPIO / FTM0_CH1 / SPI1_SCK |
| Pin produk 53 | PTD2 — GPIO / FTM0_CH2 / SPI1_SOUT |
| Pin produk 54 | PTD3 — GPIO / FTM0_CH3 / SPI1_SIN |
| Pin produk 55 | PTD4 — GPIO / FTM0_CH4 / SPI1_PCS1 |
| Pin produk 56 | PTD5 — GPIO / FTM0_CH5 / SPI1_PCS2 |
| Pin produk 57 | PTD6 — GPIO / FTM0_CH6 / SPI1_PCS3 |
| Pin produk 58 | PTD7 — GPIO / FTM0_CH7 / CMP1_OUT |
| Pin produk 59 | PTD8 — GPIO / FTM1_CH0 / I2C0_SCL |
| Pin produk 60 | PTD9 — GPIO / FTM1_CH1 / I2C0_SDA |
| Pin produk 61 | PTD10 — GPIO / FTM1_CH2 / I2C1_SCL |
| Pin produk 62 | PTD11 — GPIO / FTM1_CH3 / I2C1_SDA |
| Pin produk 63 | PTD12 — GPIO / FTM1_CH4 / FTM3_FLT1 |
| Pin produk 64 | PTD13 — GPIO / FTM1_CH5 / FTM3_FLT2 |
| Pin produk 65 | PTD14 — GPIO / FTM1_CH6 / FTM3_FLT3 |
| Pin produk 66 | PTD15 — GPIO / FTM1_CH7 / FTM0_FLT3 |
| Pin produk 67 | PTD16 — GPIO / FTM0_CH0 / UART2_TX |
| Pin produk 68 | PTD17 — GPIO / FTM0_CH1 / UART2_RX |
| Pin produk 69 | PTD18 — GPIO / FTM0_CH2 / UART2_RTS_b |
| Pin produk 70 | PTD19 — GPIO / FTM0_CH3 / UART2_CTS_b |
| Pin produk 71 | VDD — Digital supply voltage |
| Pin produk 72 | VSS — Digital ground |
| Pin produk 73 | PTE0 — GPIO / FTM1_CH0 / I2S_CLKIN |
| Pin produk 74 | PTE1 — GPIO / FTM1_CH1 / I2S_RXD0 |
| Pin produk 75 | PTE2 — GPIO / FTM1_CH2 / I2S_RX_FS |
| Pin produk 76 | PTE3 — GPIO / FTM1_CH3 / I2S_RX_BCLK |
| Pin produk 77 | PTE4 — GPIO / FTM2_CH0 / SPI2_PCS0 |
| Pin produk 78 | PTE5 — GPIO / FTM2_CH1 / SPI2_SCK |
| Pin produk 79 | PTE6 — GPIO / FTM2_CH2 / SPI2_SOUT |
| Pin produk 80 | PTE7 — GPIO / FTM2_CH3 / SPI2_SIN |
| Pin produk 81 | PTE8 — GPIO / FTM2_CH4 / UART5_TX |
| Pin produk 82 | PTE9 — GPIO / FTM2_CH5 / UART5_RX |
| Pin produk 83 | PTE10 — GPIO / FTM2_CH6 / I2C2_SCL |
| Pin produk 84 | PTE11 — GPIO / FTM2_CH7 / I2C2_SDA |
| Pin produk 85 | PTE12 — GPIO / FTM3_CH0 / SPI2_PCS1 |
| Pin produk 86 | PTE13 — GPIO / FTM3_CH1 / SPI2_PCS2 |
| Pin produk 87 | PTE14 — GPIO / FTM3_CH2 / SPI2_PCS3 |
| Pin produk 88 | PTE15 — GPIO / FTM3_CH3 / I2S_TXD0 |
| Pin produk 89 | PTE16 — GPIO / UART4_TX / CMP3_OUT |
| Pin produk 90 | PTE17 — GPIO / UART4_RX / CMP2_OUT |
| Pin produk 91 | PTE18 — GPIO / UART4_RTS_b / CMP1_OUT |
| Pin produk 92 | PTE19 — GPIO / UART4_CTS_b / CMP0_OUT |
| Pin produk 93 | VDD — Digital supply voltage |
| Pin produk 94 | VSS — Digital ground |
| Pin produk 95 | USB0_DP — USB D+ (Full-Speed with on-chip PHY) |
| Pin produk 96 | USB0_DM — USB D- (Full-Speed with on-chip PHY) |
| Pin produk 97 | VOUT33 — USB 3.3 V regulator output (bypass required) |
| Pin produk 98 | VREGIN — USB regulator input |
| Pin produk 99 | USB0_VBUS — USB VBUS detect |
| Pin produk 100 | USB0_ID — USB OTG ID (host vs device detect) |
| Pin produk 101 | RTC_XTAL32 — 32 kHz RTC crystal input |
| Pin produk 102 | RTC_XTAL32B — 32 kHz RTC crystal output |
| Pin produk 103 | VDD — Digital supply voltage |
| Pin produk 104 | VSS — Digital ground |
| Pin produk 105 | TAMPER0 — Tamper detect pin 0 |
| Pin produk 106 | TAMPER1 — Tamper detect pin 1 |
| Pin produk 107 | TAMPER2 — Tamper detect pin 2 |
| Pin produk 108 | TAMPER3 — Tamper detect pin 3 |
| Pin produk 109 | TAMPER4 — Tamper detect pin 4 |
| Pin produk 110 | TAMPER5 — Tamper detect pin 5 |
| Pin produk 111 | TAMPER6 — Tamper detect pin 6 |
| Pin produk 112 | TAMPER7 — Tamper detect pin 7 |
| Pin produk 113 | ADC0_DP0 — ADC0 differential pair 0 input (P-side) |
| Pin produk 114 | ADC0_DM0 — ADC0 differential pair 0 input (N-side) |
| Pin produk 115 | ADC0_DP1 — ADC0 differential pair 1 input (P-side) |
| Pin produk 116 | ADC0_DM1 — ADC0 differential pair 1 input (N-side) |
| Pin produk 117 | ADC1_DP0 — ADC1 differential pair 0 input (P-side) |
| Pin produk 118 | ADC1_DM0 — ADC1 differential pair 0 input (N-side) |
| Pin produk 119 | VDD — Digital supply voltage |
| Pin produk 120 | VSS — Digital ground |
| Pin produk 121 | DAC0_OUT — 12-bit DAC0 output |
| Pin produk 122 | DAC1_OUT — 12-bit DAC1 output |
| Pin produk 123 | VREFH — ADC high reference voltage input |
| Pin produk 124 | VREFL — ADC low reference voltage input |
| Pin produk 125 | VDDA — Analog supply voltage |
| Pin produk 126 | VSSA — Analog ground |
| Pin produk 127 | OSC0_XTAL — Main crystal oscillator input |
| Pin produk 128 | OSC0_EXTAL — Main crystal oscillator output |
| Pin produk 129 | RTC_WAKEUP_B — RTC wakeup output / tamper pin (alt) |
| Pin produk 130 | PTF0 — GPIO / FTM3_CH0 / I2S_TXD0 |
| Pin produk 131 | PTF1 — GPIO / FTM3_CH1 / I2S_TXD1 |
| Pin produk 132 | PTF2 — GPIO / FTM3_CH2 / I2S_RXD0 |
| Pin produk 133 | PTF3 — GPIO / FTM3_CH3 / I2S_RXD1 |
| Pin produk 134 | PTF4 — GPIO / FTM3_CH4 / I2S_RX_FS |
| Pin produk 135 | PTF5 — GPIO / FTM3_CH5 / I2S_RX_BCLK |
| Pin produk 136 | PTF6 — GPIO / FTM3_CH6 / I2S_TX_BCLK |
| Pin produk 137 | PTF7 — GPIO / FTM3_CH7 / I2S_TX_FS |
| Pin produk 138 | PTG0 — GPIO / FTM0_CH0 / I2S_TXD0 |
| Pin produk 139 | PTG1 — GPIO / FTM0_CH1 / I2S_TXD1 |
| Pin produk 140 | PTG2 — GPIO / FTM0_CH2 / I2S_RXD0 |
| Pin produk 141 | PTG3 — GPIO / FTM0_CH3 / I2S_RXD1 |
| Pin produk 142 | PTG4 — GPIO / FTM0_CH4 / I2S_RX_FS |
| Pin produk 143 | PTG5 — GPIO / FTM0_CH5 / I2S_RX_BCLK |
| Pin produk 144 | PTG6 — GPIO / FTM0_CH6 / I2S_TX_BCLK |
Aplikasi Umum
MK21FN1M0VLQ12 cocok untuk 6 aplikasis: USB-Connected Secure Industrial Sensors, Point-of-Sale Terminals with Hardware Crypto, Smart Electricity Meters with Tamper Detection, Secure Building Automation Gateways, Wearable Health Monitors (Non-FDA Class), Low-Power Segment-LCD HMI Controllers.
USB-Connected Secure Industrial Sensors
Why MK21FN1M0VLQ12 fits: The 120 MHz Cortex-M4 with FPU runs USB 2.0 Full-Speed stacks with on-chip PHY, while hardware AES-128 and tamper pins protect telemetry against software and physical attacks. 1 MB Flash accommodates USB + TLS stacks; 128 KB SRAM buffers continuous measurement streams. Usage and performance: Place the MCU between a 24 V-to-3.3 V industrial rail and the USB D+/D- lines; ensure 90 ohm differential routing, a common-mode choke, and ESD protection. The MK21FN1M0VLQ12 trades Ethernet for lower USB power draw, ideal for low-volume secure sensor nodes, while the MK24FN1M0 variant is a marginal upgrade if HS USB is later required.
Direkomendasikan
Point-of-Sale Terminals with Hardware Crypto
Why MK21FN1M0VLQ12 fits: Hardware AES-128 accelerators and tamper-detection pins enable PCI-PTS-style secure key storage on the same silicon; 1 MB Flash stores PIN handling, contactless, and crypto firmware. 120 MHz Cortex-M4 with FPU runs DES, AES, RSA helpers fast enough for EMV contactless transactions. Usage and performance: Use Secure JTAG disabled pin to keep debug port locked in production, route tamper pins to enclosure intrusion mesh, and run BIST at boot. The MK24FN1M0 variant is the right swap only if a future migration to HS USB peripherals is planned.
Direkomendasikan
Smart Electricity Meters with Tamper Detection
Why MK21FN1M0VLQ12 fits: The K21F adds dedicated tamper pins for magnetic and physical intrusion alarms, plus a 16-bit SAR ADC with adequate channels for voltage, current, and temperature sensors. 128 KB SRAM holds metering accumulators with headroom for DLMS/COSEM stacks, and 1 MB Flash stores firmware and calibration tables. Usage and performance: The MCU fits the 1.71-3.6 V supply range typical of battery-buffered meters and offers low-power Stop mode for black-out conditions. Pick MK22FN1M0VLQ12 if a segment-LCD display replaces the LED matrix without changing the surrounding footprint.
Direkomendasikan
Secure Building Automation Gateways
Why MK21FN1M0VLQ12 fits: USB OTG with on-chip PHY lets the gateway expose a USB mass-storage slot for firmware updates or a USB cellular dongle for backup connectivity. Hardware AES-128 secures local BACnet/Modbus communications; tamper pins detect panel opening. 1 MB Flash holds multi-protocol stacks including BACnet, KNX, and TLS. Usage and performance: Power the MCU from 24 V building bus via an LDO and route USB to Type-A or micro-B depending on housing. The MK21FN1M0VLQ12 keeps current draw modest, but when adding HS peripherals, switch to MK24FN1M0VLQ12 with hardware-compatible footprint.
Direkomendasikan
Wearable Health Monitors (Non-FDA Class)
Why MK21FN1M0VLQ12 fits: 120 MHz Cortex-M4 with DSP extensions runs HRV and step-count DSP filters; 128 KB SRAM keeps time-series windows; full-speed USB eases tethered charging and data offload. Hardware crypto and tamper pins protect biometric data at rest. Usage and performance: Place the MCU on a 1.8 V rail to take advantage of low-voltage Stop mode below 200 uA; this trims wearable battery budget. For lighter applications where LCD driving is the priority, MK22FN1M0VLQ12 may be selected without sacrificing the same 144-LQFP PCB layout.
Direkomendasikan
Low-Power Segment-LCD HMI Controllers
Why MK21FN1M0VLQ12 fits: Although the LCD controller is more pronounced on the K22 family, K21F still supports segment LCD driving for simple dash displays and panel meters. 1 MB Flash stores complex graph state-machines; 120 MHz handles USB-to-LCD bridging. Usage and performance: Choose this application as a fall-back only when K22 LCD is over-spec, otherwise prefer MK22FN1M0VLQ12 for the same 144-LQFP PCB. Trade-off: K22 routes fewer pins to GPIO but adds segmented display bias generation; the K21 family keeps the GPIO-heavy secure-application footprint.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk MK21FN1M0VLQ12 — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | MK21FN1M0VLQ12R | MK22FN1M0AVLQ12 | MK24FN1M0VLQ12 | MK22FN1M0VLQ12 | MK24FN1M0VLQ12R |
|---|---|---|---|---|---|---|
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 144-LQFP (20x20) | 144-LQFP (20x20) | 144-LQFP (20x20) | 144-LQFP (20x20) | 144-LQFP (20x20) | 144-LQFP (20x20) |
| Core | Cortex-M4 with FPU | Cortex-M4 with FPU | Cortex-M4 with FPU | Cortex-M4 with FPU | Cortex-M4 with FPU | Cortex-M4 with FPU |
| Max Clock | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz | 120 MHz |
| Flash | 1 MB | 1 MB | 1 MB | 1 MB | 1 MB | 1 MB |
| SRAM | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB | 128 KB |
Diferensiator Kunci
- Hardware AES-128 and tamper pins on-chip (vsMK22FN1M0AVLQ12)
- Pin-compatible upgrade path to High-Speed USB (vsMK24FN1M0VLQ12)
- On-chip full-speed USB PHY (no external ULPI chip) (vsMK60 series (NRND/legacy))
Catatan Desain
Estimated: For a 144-pin 0.5 mm pitch LQFP, the standard NXP K-series decouple recipe is one 100 nF X7R per VDD/VSS pair plus 4.7 uF X5R bulk within ~10 mm. With about 8 VDD pins on this package the cap count is roughly 9. Without this, MCORE ripple can corrupt ADC readings and corrupt USB 2.0 eye tests.
USB 2.0 Full-Speed D+/D- must be 90 ohm differential over a continuous ground plane with no stubs; include a common-mode choke and a transient suppressor. Without these, full-speed eye diagrams fail compliance and full-speed enumeration may fail at the host. NXP provides a dedicated Application Note for K2x USB layout that should be followed exactly.
The MK21FN1M0VLQ12 is NRND, so production orders must be confirmed against the latest NXP PCN stream before lock-in. Failing to do this may trap a design into a 1-year Last-Time-Buy if demand suddenly contracts; pair the part with MK24FN1M0 as a footprint-compatible second-source and keep firmware portable between the two.
Estimated: at maximum 120 MHz, the K21F typically draws about 30 mA with peripherals active, so dissipation stays under 0.1 W at 3.3 V. Theta_JA on 144-LQFP is around 50-55 C/W on a 4-layer JEDEC test board with adequate vias - well within safety - but a small copper pour on VDD/VSS pairs is recommended for cold-swap transients.
Informasi Konformitas
MK21FN1M0VLQ12 ships in a lead-free 144-LQFP that is RoHS-compliant; reach, halogen-free, and conflict-minerals declarations are not present in the verified web data and should be requested from NXP product compliance if required.
