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NXP Semiconductors K32L2B11VFT0AR
- Part No.:
- K32L2B11VFT0AR
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-UFQFN Exposed Pad
- Datasheet:
-
K32L2B11VFT0AR.pdf
- Description:
- K32 L2B, 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,984
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Product details
Overview
K32L2B11VFT0AR from NXP Semiconductors is a 48 MHz Arm® Cortex®-M0+ microcontroller with 64 KB flash, 32 KB SRAM, and USB Full-Speed device controller supporting crystal-less operation. It features a 16-bit 461 ksps ADC with internal voltage reference, FlexIO for serial peripheral emulation, and operates from 1.71–3.6 V across –40 to 105 °C - optimized for battery-powered metering and portable HMI devices.
For engineers reviewing the K32L2B11VFT0AR datasheet, K32L2B11VFT0AR pinout, K32L2B11VFT0AR application, or K32L2B11VFT0AR equivalent, key selection criteria include its 48-pin QFN package, 36 GPIOs (24 interrupt-capable), 14-channel ADC, USB FS crystal-less capability, and ultra-low-power deep-sleep mode at 1.96 µA with RTC + RAM retention.
Technical Context
The K32L2B11VFT0AR integrates an Arm Cortex-M0+ core with a crossbar switch enabling concurrent bus master access, and MCG-Lite clock generator supporting HIRC48M (±0.5%), LIRC8M/2M (±3%), and 32 kHz–32 MHz external oscillators. Its USB FS controller uses internal trimming to achieve ±0.25% accuracy without external crystal.
Power management includes six static low-power modes: VLPR (54 µA/MHz), VLPS, LLS, and three VLLS variants - with VLLS3 retaining SRAM and RTC at 1.96 µA. Wake-up sources include LLWU (8 pins + 4 internal modules), AWIC, and NVIC, enabling robust event-driven operation in energy-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+, 48 MHz max - delivers deterministic real-time control with Thumb-2 instruction set compatibility. |
| Memory | 64 KB flash / 32 KB SRAM / 16 KB ROM bootloader - supports field firmware updates via UART, I2C, SPI, or USB. |
| USB Interface | Full-Speed 2.0 device only, crystal-less operation - eliminates external 12 MHz crystal and associated BOM cost and layout area. |
| ADC | 16-bit, 461 ksps, up to 14 channels (SE/DP) - enables high-resolution sensor acquisition with internal 1.2 V reference. |
| Low-Power Performance | 1.96 µA in VLLS3 (RAM + RTC retained) - extends battery life in always-on monitoring applications. |
| Operating Range | 1.71–3.6 V supply, –40 to 105 °C - suitable for industrial-grade portable and metering equipment. |
| I/O Count | 36 GPIOs (24 with interrupt capability, 6 high-drive) - sufficient for mixed-signal HMI and sensor interface without external expanders. |
Pinout & Package
Package: 48-pin QFN, 7 mm × 7 mm, 0.5 mm pitch, 0.65 mm thickness - surface-mount compatible with standard reflow profiles and IPC-compliant PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual power domains support analog/digital isolation; multiple VDD/VSS pairs reduce noise coupling and improve EMI resilience. |
| PTA0–PTA31, PTB0–PTB15, PTC0–PTC7, PTD0–PTD7, PTE0–PTE3 | GPIO multiplexed I/O | 36 configurable pins with digital input/output, interrupt, and peripheral function mapping - enables flexible board-level routing. |
| USB_DP, USB_DM | USB Full-Speed differential pair | On-die termination and internal oscillator enable crystal-less USB connectivity - reduces component count and layout complexity. |
| ADC0_SE0–ADC0_SE13 | Analog input channels | 14 single-ended or 7 differential inputs routed to 16-bit ADC - supports precision temperature, pressure, or battery monitoring. |
| SWD_DIO, SWD_CLK | Two-pin Serial Wire Debug | Minimal debug footprint for programming and real-time trace via Micro Trace Buffer - ideal for space-constrained designs. |
Key Features
| Feature | Design Value |
|---|---|
| Crystal-less USB FS | Eliminates 12 MHz crystal and load capacitors - reduces BOM cost by ≥$0.15 and saves ~3 mm² PCB area. |
| FlexIO module | Configurable logic engine emulating UART, SPI, I2C, PWM, or custom protocols - avoids dedicated interface ICs in multi-protocol systems. |
| VLLS3 low-power mode | 1.96 µA with full SRAM and RTC retention - enables years of operation on coin-cell batteries in wake-on-event applications. |
| High-accuracy internal clocks | HIRC48M ±0.5%, LIRC8M ±3% - removes need for external timing components in non-RTC-critical subsystems. |
| Segment LCD support (SLCD) | Not implemented in K32L2B11VFT0AR variant - confirmed by ordering table; reserved pins are unconnected in this 48-QFN configuration. |
Applications
| Smart Utility Metering | Portable Medical Sensors |
|---|---|
|
Use Scenario: Battery-powered electricity/water/gas meters requiring long-term data logging, tamper detection, and secure firmware updates. IC Role / Device Role / Timing Role: Main system controller handling metrology ADC sampling, secure boot, USB-based field calibration, and RTC-timestamped event logging. Use Value: Crystal-less USB enables technician plug-in calibration without external timing components; VLLS3 mode ensures >10-year battery life with daily wake-ups. |
Use Scenario: Handheld pulse oximeters or glucose monitors needing compact size, low standby current, and analog signal conditioning. IC Role / Device Role / Timing Role: Signal acquisition hub managing photodiode ADC reads, DAC-driven LED bias, comparator-based threshold alerts, and Bluetooth LE interface timing. Use Value: Integrated 16-bit ADC + 12-bit DAC + high-speed comparator eliminates discrete signal chain ICs; 1.96 µA deep sleep extends single-charge operation to >6 months. |
| Industrial Remote I/O Modules | Asset Tracking Beacons |
|
Use Scenario: DIN-rail mounted sensors collecting temperature, humidity, and vibration data for predictive maintenance in factory environments. IC Role / Device Role / Timing Role: Edge node processor executing local FFT analysis, watchdog-monitored UART communication to PLC, and secure OTA update handling. Use Value: FlexIO emulates legacy RS-485 transceivers while native UART handles Modbus RTU - simplifies interoperability without external level shifters. |
Use Scenario: GPS-denied indoor asset tags reporting location via BLE and motion-triggered wake-up in warehouses or hospitals. IC Role / Device Role / Timing Role: Ultra-low-power coordinator managing accelerometer wake events, BLE advertising intervals, and encrypted sensor data packaging. Use Value: LLWU + LPTMR + RTC alarm enable precise motion-triggered wake cycles; 36 GPIOs support multi-sensor fusion without I/O expanders. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| K32L2B21VFT0A | 128 KB flash, same 48-QFN package and peripherals - no change to PCB or firmware porting effort. | Supports larger firmware images (e.g., BLE stack + OTA + application) where K32L2B11VFT0AR's 64 KB is limiting. | Select when future firmware growth or dual-bank OTA is required; identical pinout and electrical behavior ensure drop-in upgrade path. |
| KL27Z32VLH4 | ARM Cortex-M0+, 48 MHz, 32 KB flash, 8 KB SRAM, 64-LQFP - smaller memory, different package, no crystal-less USB. | Lacks USB FS crystal-less capability and SLCD support; requires external 12 MHz crystal and has lower ADC resolution (16-bit @ 1 Msps, but only 8 channels). | Consider only if legacy KL2x toolchain reuse is critical and USB is not needed; not pin-compatible - requires PCB redesign. |
Compared with K32L2B21VFT0A, the K32L2B11VFT0AR offers identical low-power performance and peripheral set at reduced flash capacity, making it optimal for cost-sensitive, fixed-function deployments. Versus KL27Z32VLH4, it delivers superior integration (crystal-less USB, higher ADC channel count, larger SRAM), justifying migration for new designs targeting extended battery life and simplified BOM.
Availability
K32L2B11VFT0AR is available at Aetrix Electronics and suitable for smart metering, portable medical sensors, industrial remote I/O, and asset tracking beacons requiring stable component supply and long-term industrial lifecycle support.
Supply support for K32L2B11VFT0AR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with over 50 years of embedded systems expertise.
The K32L2B series targets cost-sensitive, battery-operated devices requiring integrated USB, ultra-low-power operation, and flexible human-machine interfaces - designed specifically for metering, wearables, and edge sensing.
FAQ
Does K32L2B11VFT0AR support crystal-less USB Full-Speed operation?
Yes, K32L2B11VFT0AR integrates a trimmed internal oscillator that meets USB FS ±0.25% accuracy requirement without external crystal. This is confirmed in the datasheet Section 2.2.16 and Electrical Characteristics Table 5.5.1, enabling direct USB connectivity with minimal external components.
What is the maximum ADC sampling rate and channel count supported by K32L2B11VFT0AR?
K32L2B11VFT0AR supports a 16-bit ADC with up to 461 ksps sampling rate and 14 single-ended (or 7 differential) input channels. This is specified in the "Peripherals" section and verified in Table 5.3.6 of the datasheet, with internal 1.2 V reference ensuring consistent measurement accuracy.
Is segment LCD (SLCD) functionality available on K32L2B11VFT0AR?
No, SLCD is not enabled on K32L2B11VFT0AR. The ordering table explicitly lists "-" under SLCD column for all 48-QFN variants including K32L2B11VFT0AR. SLCD is only available on 64-pin LQFP and MAPBGA packages (e.g., K32L2B11VLH0A).
What low-power modes does K32L2B11VFT0AR support, and what is the lowest current draw?
K32L2B11VFT0AR supports six static low-power modes, including VLLS3 with 1.96 µA current draw while retaining SRAM and RTC. This value is measured per Table 5.2.4 and applies across the full operating temperature range (–40 to 105 °C), enabling decade-long battery life in wake-on-event systems.
Does K32L2B11VFT0AR include a built-in bootloader, and which interfaces does it support?
Yes, K32L2B11VFT0AR includes 16 KB of ROM containing a production bootloader supporting UART, I2C, SPI, and USB interfaces for firmware updates. This is documented in Section 2.1.4 (Memory) and Table 1 (Ordering Information), and enables secure field upgrades without external programming hardware.
K32L2B11VFT0AR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-UFQFN Exposed Pad
- Series:
- K32 L2
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- -
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit
- Speed:
- 48MHz
- Connectivity:
- FlexIO, I2C, SPI, TSI, UART/USART, USB
- Peripherals:
- DMA, PWM, WDT
- Number of I/O:
- 36
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 14x16b; D/A 1x12b
- Oscillator Type:
- External, Internal
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
K32L2B11VFT0AR FAQ
1.How can I place an order for K32L2B11VFT0AR through Aetrix?
Please submit a Request for Quotation (RFQ) for K32L2B11VFT0AR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for K32L2B11VFT0AR reliable?
The price and inventory of K32L2B11VFT0AR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for K32L2B11VFT0AR is usually 5 days.
3.What payment methods are accepted for K32L2B11VFT0AR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for K32L2B11VFT0AR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for K32L2B11VFT0AR?
K32L2B11VFT0AR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your K32L2B11VFT0AR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for K32L2B11VFT0AR?
For technical support, including K32L2B11VFT0AR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your K32L2B11VFT0AR requirements.
6.How does Aetrix verify that K32L2B11VFT0AR is sourced from the original manufacturer or authorized distributors?
All K32L2B11VFT0AR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that K32L2B11VFT0AR meets industry standards.
7.What is the process for return or replacement of K32L2B11VFT0AR?
All K32L2B11VFT0AR units undergo pre-shipment inspection (PSI). If there is an issue with K32L2B11VFT0AR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The K32L2B11VFT0AR part is unused and in its original packaging.
Return procedure for K32L2B11VFT0AR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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