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NXP Semiconductors LPC11U37FBD48/401,
- Part No.:
- LPC11U37FBD48/401,
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
LPC11U37FBD48/401,.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,434
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Product details
Overview
LPC11U37FBD48/401 from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller in LQFP48 package, operating at up to 50 MHz with 128 kB flash, 10 kB SRAM (8 kB + 2 kB USB RAM), and 4 kB EEPROM. It integrates USB 2.0 full-speed device controller, USART with RS-485/smart card support, two SSP interfaces, Fast-mode Plus I²C, 10-bit ADC (8 channels), and 40 GPIO pins - deployed in USB audio devices and handheld scanners.
For engineers reviewing the LPC11U37FBD48/401 datasheet, LPC11U37FBD48/401 pinout, LPC11U37FBD48/401 application, or LPC11U37FBD48/401 equivalent, key selection criteria include USB device stack readiness, EEPROM byte-programmability, fractional baud rate generation in USART, and low-power Deep-sleep/Power-down modes with wake-up via GPIO or USB activity.
Technical Context
The LPC11U37FBD48/401 implements an ARM Cortex-M0 core with NVIC and NMI support, paired with dual PLLs - one for CPU clocking (up to 50 MHz) and a dedicated PLL for USB timing. Its memory subsystem includes 128 kB flash with sector/page erase, 4 kB on-chip EEPROM with byte-level erasure/programming, and 10 kB SRAM split as 8 kB general-purpose and 2 kB USB-dedicated RAM.
Peripheral integration centers on connectivity: a full-speed USB 2.0 device controller with ROM-based drivers enabling flash updates over USB; a USART supporting asynchronous RS-485, synchronous mode, and ISO 7816-3 smart card interface; plus two SSP controllers, Fast-mode Plus I²C (1 Mbit/s), and four timers (two 32-bit, two 16-bit) with match/capture capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 50 MHz max - enables deterministic real-time control with Thumb-2 instruction set and low gate count. |
| Flash Memory | 128 kB with 4 kB sector / 256 B page erase - supports robust firmware updates and secure boot partitioning. |
| EEPROM | 4 kB, byte-erasable and byte-programmable - retains calibration data or user settings across power cycles without external NV memory. |
| SRAM | 10 kB total (8 kB general + 2 kB USB RAM) - sufficient for USB descriptor handling, endpoint buffers, and application stack. |
| USB Interface | Full-speed (12 Mbps) device controller with ROM drivers - eliminates external PHY and reduces BOM cost; supports SoftConnect via PIO0_6. |
| ADC | 10-bit, 8-channel multiplexed input - provides sensor interface capability for industrial monitoring or medical front-ends. |
| GPIO | 40 pins with configurable pull-up/pull-down, repeater, open-drain, and interrupt capability - enables flexible peripheral interfacing and hardware event triggering. |
Pinout & Package
Package: LQFP48, plastic low profile quad flat package; 48 leads; body 7 × 7 × 1.4 mm (SOT313-2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET/PIO0_0 | Reset input / GPIO | External reset with 20 ns glitch filter; also selects JTAG vs SWD debug mode during boot. |
| USB_DP / USB_DM | USB differential pair | Full-speed USB 2.0 physical interface; requires 1.5 kΩ pull-up on DP controlled by PIO0_6 (SoftConnect). |
| PIO0_18/RXD / PIO0_19/TXD | USART receive/transmit | Asynchronous UART interface with internal FIFO; supports RS-485 direction control and smart card clock/data. |
| PIO0_4/SCL / PIO0_5/SDA | I²C-bus interface | Fast-mode Plus capable (1 Mbit/s); open-drain outputs with high-current sink when FM+ enabled. |
| PIO0_22/AD6 / PIO0_23/AD7 | ADC inputs | Two of eight 10-bit ADC channels; share pins with CT16B1_MAT1/MISO1 and IOH_9 respectively. |
Key Features
| Feature | Design Value |
|---|---|
| ROM-based USB drivers | Reduces firmware footprint and eliminates need for external USB stack licensing; enables USB enumeration and flash updates directly over USB. |
| Byte-programmable EEPROM | Enables field-updatable calibration constants, device serial numbers, or configuration parameters without block-level erase overhead. |
| Fractional baud rate generator | Supports precise UART timing across wide crystal frequencies (1–25 MHz), critical for RS-485 interoperability and legacy protocol compliance. |
| Dual PLL architecture | Separate PLLs for CPU (up to 50 MHz) and USB (48 MHz) ensure stable, jitter-free clocks without shared resource contention. |
| Four low-power modes | Deep-sleep, Power-down, and Deep power-down modes reduce current to µA range; wake-up via GPIO, watchdog, or USB VBUS detection. |
Applications
| USB Audio Interface | Handheld Barcode Scanner |
|---|---|
Use Scenario: Embedded USB audio class device connecting to host PC without driver installation. IC Role / Device Role / Timing Role: USB 2.0 full-speed device controller with integrated descriptors and audio streaming endpoints. Use Value: ROM-based USB stack eliminates external memory and reduces firmware development time for UAC1.0 compliance. | Use Scenario: Portable scanner reading 1D/2D barcodes and transmitting decoded data via USB HID or CDC. IC Role / Device Role / Timing Role: Central MCU managing image sensor interface, decode engine, and USB/CDC communication layer. Use Value: 40 GPIO pins support LED indicators, trigger buttons, and sensor control; 128 kB flash stores multiple symbology decoders. |
| Industrial RS-485 Node | Medical Sensor Hub |
Use Scenario: Remote I/O module communicating over long-distance RS-485 bus in factory automation. IC Role / Device Role / Timing Role: USART with hardware RTS/CTS and RS-485 direction control driving half-duplex transceiver. Use Value: Fractional baud rate generator ensures accurate timing at 115.2 kbps over 1200 m cable runs with ±1% crystal tolerance. | Use Scenario: Wearable or point-of-care device aggregating ECG, temperature, and SpO₂ signals before USB transmission. IC Role / Device Role / Timing Role: Analog front-end controller with 10-bit ADC, EEPROM for calibration storage, and USB for data export. Use Value: 4 kB EEPROM retains per-sensor gain/offset coefficients; low-power Deep-sleep extends battery life between measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC11U35FBD48/401 | 64 kB flash, 10 kB SRAM, same peripherals and package - lacks 64 kB additional flash capacity. | Suitable for simpler USB HID or sensor node designs where code size < 64 kB. | Select when firmware footprint is constrained and EEPROM/USB/USART features are otherwise identical. |
| LPC11U36FBD48/401 | 96 kB flash, 10 kB SRAM, same peripherals and package - intermediate flash density between U35 and U37. | Applicable for mid-complexity USB-CDC devices or firmware-over-USB update agents. | Choose when balancing cost and flash headroom for future feature expansion without needing full 128 kB. |
Compared with LPC11U35FBD48/401 and LPC11U36FBD48/401, the LPC11U37FBD48/401 delivers maximum on-chip program storage for complex USB device stacks or multi-protocol firmware, while maintaining identical peripheral set, power management, and LQFP48 footprint - making it the highest-density drop-in upgrade path within the LPC11U3x family.
Availability
LPC11U37FBD48/401 is available at Aetrix Electronics and suitable for USB audio devices, handheld scanners, and industrial RS-485 nodes requiring stable component supply, long-term manufacturability, and NXP's qualified automotive-grade process.
Supply support for LPC11U37FBD48/401 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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The LPC11U3x product line targets cost-sensitive, USB-connected embedded systems requiring low power, integrated EEPROM, and minimal external components - optimized for rapid time-to-market in consumer and medical peripherals.
FAQ
What is the maximum operating frequency of the LPC11U37FBD48/401?
The LPC11U37FBD48/401 operates at a maximum CPU frequency of 50 MHz, achieved using either the internal 12 MHz IRC oscillator with PLL multiplication or an external crystal (1–25 MHz) fed into the system oscillator and scaled via PLL. This frequency is fully supported across the specified industrial temperature range (−40 °C to +85 °C) and 1.8 V to 3.6 V supply voltage.
Does the LPC11U37FBD48/401 support USB device firmware updates?
Yes, the LPC11U37FBD48/401 supports in-application programming (IAP) over USB using its ROM-based USB device stack. The bootloader enables flash reprogramming without external tools, leveraging the integrated USB controller and 2 kB dedicated USB RAM for descriptor and endpoint buffering - confirmed in Section 2 Features and Table 2 of the datasheet.
How many ADC channels does the LPC11U37FBD48/401 provide, and what is their resolution?
The LPC11U37FBD48/401 includes a single 10-bit successive approximation ADC with input multiplexing across eight pins (AD0–AD7). All channels share the same reference (VREFP/VREFN) and conversion clock, delivering 10-bit precision with typical INL/DNL performance documented in the electrical characteristics section of the datasheet.
Is the 4 kB EEPROM on the LPC11U37FBD48/401 truly byte-erasable and byte-programmable?
Yes, the 4 kB on-chip EEPROM in the LPC11U37FBD48/401 supports true byte-level erasure and programming, implemented via an on-chip API located in boot ROM. This allows individual bytes to be modified without affecting adjacent locations - essential for storing infrequently changed parameters like calibration data or device identifiers.
What debug interfaces are supported by the LPC11U37FBD48/401?
The LPC11U37FBD48/401 supports both standard JTAG (with BSDL compliance) and Serial Wire Debug (SWD) interfaces. Debug mode selection is determined by the logic level on the RESET/PIO0_0 pin during reset: LOW enables JTAG boundary scan, HIGH selects SWD - providing flexibility for different toolchain and probe requirements.
LPC11U37FBD48/401, Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-LQFP
- Series:
- LPC11Uxx
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- I2C, Microwire, SmartCard, SPI, SSP, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, POR, WDT
- Number of I/O:
- 40
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 10K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LPC11U37FBD48/401, FAQ
1.How can I place an order for LPC11U37FBD48/401, through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC11U37FBD48/401, 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 LPC11U37FBD48/401, reliable?
The price and inventory of LPC11U37FBD48/401, are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC11U37FBD48/401, is usually 5 days.
3.What payment methods are accepted for LPC11U37FBD48/401,?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC11U37FBD48/401, transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC11U37FBD48/401,?
LPC11U37FBD48/401, orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC11U37FBD48/401, 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 LPC11U37FBD48/401,?
For technical support, including LPC11U37FBD48/401, datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC11U37FBD48/401, requirements.
6.How does Aetrix verify that LPC11U37FBD48/401, is sourced from the original manufacturer or authorized distributors?
All LPC11U37FBD48/401, 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 LPC11U37FBD48/401, meets industry standards.
7.What is the process for return or replacement of LPC11U37FBD48/401,?
All LPC11U37FBD48/401, units undergo pre-shipment inspection (PSI). If there is an issue with LPC11U37FBD48/401,, 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 LPC11U37FBD48/401, part is unused and in its original packaging.
Return procedure for LPC11U37FBD48/401,:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LPC11U37FBD48/401, Tags
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ATTINY4-TSHR
Microchip Technology
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ATTINY10-TSHR
Microchip Technology
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ATTINY10-TS8R
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ATTINY202-SSNR
Microchip Technology
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ATTINY202-SSFR
Microchip Technology
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ATTINY402-SSNR
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PIC16F15213T-I/MF
Microchip Technology
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PIC16F15213-E/MF
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PIC10F200T-I/OT
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ATTINY412-SSNR
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PIC10F202T-I/OT
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ATTINY404-SSNR
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