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NXP Semiconductors LPC11U24FBD48/40EL
- Part No.:
- LPC11U24FBD48/40EL
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
LPC11U24FBD48/40EL.pdf
- Description:
- IC MCU 32BIT 32KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,685
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Product details
Overview
LPC11U24FBD48/40EL from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller in LQFP48 package, operating up to 50 MHz with 32 kB flash, 8 kB SRAM, 4 kB EEPROM, full-speed USB 2.0 device controller, 10-bit ADC (8 channels), and 40 GPIO pins. It targets USB-connected embedded control applications such as medical peripherals and industrial USB interfaces.
For engineers reviewing the LPC11U24FBD48/40EL datasheet, LPC11U24FBD48/40EL pinout, LPC11U24FBD48/40EL application, or LPC11U24FBD48/40EL equivalent, key selection criteria include USB device stack support in ROM, 4 kB byte-erasable EEPROM, 5 V-tolerant GPIO with configurable pull-up/pull-down, and Deep power-down wake-up via dedicated WAKEUP pin (PIO0_16).
Technical Context
The LPC11U24FBD48/40EL integrates dual PLLs-one for CPU clock generation (up to 50 MHz) and a dedicated USB PLL-enabling simultaneous high-performance execution and reliable full-speed USB communication. Its memory subsystem includes separate 32 kB flash, 8 kB SRAM, and 4 kB EEPROM with IAP capability, all accessible via AHB/APB bus matrix.
Peripheral architecture features two SSP controllers with FIFO and multi-protocol support, one Fast-mode Plus I²C-bus interface (1 Mbit/s), one USART with RS-485/ISO7816 smart card mode, four general-purpose timers (including windowed watchdog), and a 10-bit ADC with eight analog inputs-all mapped to 40 GPIO pins in the LQFP48 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 32-bit RISC, up to 50 MHz operation - enables efficient C/C++ code execution with low gate count and minimal power. |
| Memory | 32 kB flash / 8 kB SRAM / 4 kB EEPROM - supports firmware updates via USB, persistent data storage without external components, and real-time variable retention. |
| USB Interface | Full-speed USB 2.0 device controller with ROM-based drivers - eliminates need for external USB PHY or driver development; enables HID, CDC, and MSC class implementations out-of-box. |
| ADC | 10-bit SAR ADC with 8 input channels - provides sufficient resolution for sensor interfacing (e.g., temperature, pressure) without external signal conditioning in many cases. |
| GPIO | 40 programmable I/O pins with 5 V tolerance, configurable pull-up/pull-down, repeater mode, and open-drain - simplifies level translation and direct connection to industrial sensors and actuators. |
| Power Modes | Sleep, Deep-sleep, Power-down, Deep power-down - Deep power-down draws <1 µA and wakes via PIO0_16, enabling battery-powered USB peripherals with multi-year shelf life. |
| Package | LQFP48, 7 × 7 × 1.4 mm, 0.5 mm pitch - industry-standard footprint compatible with automated assembly and rework; thermal performance validated for continuous 50 MHz operation. |
Pinout & Package
Package: LQFP48 (SOT313-2), plastic low-profile quad flat package, 48 leads, body size 7 mm × 7 mm × 1.4 mm, 0.5 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET/PIO0_0 | Reset input / GPIO | Active-low reset with 20 ns glitch filter; doubles as debug select (JTAG vs SWD); must be pulled HIGH externally in Deep power-down mode. |
| USB_DP / USB_DM | USB differential pair | Full-speed USB 2.0 D+ and D− lines compliant with USB specification; not 5 V tolerant; require 1.5 kΩ SoftConnect pull-up on DP controlled by PIO0_6. |
| PIO0_16/AD5/CT32B1_MAT3/WAKEUP | Multi-function pin | In Deep power-down, functions exclusively as WAKEUP input with 20 ns glitch filter; also serves as ADC input 5 and timer match output - enables ultra-low-power wake-on-event design. |
| PIO0_4/SCL & PIO0_5/SDA | I²C-bus interface | Open-drain I²C pins supporting Fast-mode Plus (1 Mbit/s); require external pull-ups; high-current sink capability when Fast-mode Plus enabled - reduces need for external buffer in noisy environments. |
| VDD / VSS | Power supply rails | Single 3.3 V supply (1.8–3.6 V range); VDD also serves as ADC reference voltage - simplifies BOM by eliminating separate reference IC for basic analog sensing. |
Key Features
| Feature | Design Value |
|---|---|
| ROM-based USB stack | Pre-integrated USB device firmware in boot ROM enables immediate USB enumeration without flash space consumption or driver porting effort. |
| Byte-erasable EEPROM | 4 kB on-chip EEPROM supports individual byte erase/write - ideal for storing calibration data, device IDs, or configuration parameters without wear-leveling overhead. |
| Dual PLL architecture | Separate CPU and USB PLLs allow independent clock domain optimization - maintains USB timing integrity while scaling CPU frequency dynamically. |
| Deep power-down wake-up pin | Dedicated WAKEUP function on PIO0_16 with hardware glitch filtering - eliminates need for external wake-up circuitry in battery-operated USB peripherals. |
| 5 V-tolerant GPIO | 40 pins tolerate 5 V inputs while powered from 3.3 V - enables direct interfacing with legacy industrial logic, RS-485 transceivers, and sensor modules without level shifters. |
Applications
| USB Audio Interface | Industrial USB Gateway |
|---|---|
|
Use Scenario: Compact USB audio adapter converting analog microphone/headphone signals to digital USB audio class (UAC1/UAC2) streams. IC Role / Device Role / Timing Role: Primary MCU handling USB audio descriptor negotiation, sample rate conversion, and real-time DMA transfer between ADC/DAC and USB endpoints. Use Value: ROM-based USB stack and 10-bit ADC reduce firmware development time; 4 kB EEPROM stores vendor-specific descriptors and calibration offsets. |
Use Scenario: Field-deployable USB-to-RS-485 converter bridging PC-based SCADA software to legacy industrial sensors and PLCs. IC Role / Device Role / Timing Role: USB device endpoint managing CDC ACM class, UART-to-USB protocol translation, and RS-485 direction control via GPIO. Use Value: 5 V-tolerant GPIO directly drives RS-485 transceiver enable lines; USART with fractional baud rate generator ensures precise 9600–115200 bps compatibility across field devices. |
| Portable Medical Sensor Hub | Smart Card Reader Module |
|
Use Scenario: Handheld glucose meter or pulse oximeter aggregating sensor data and uploading results via USB mass storage or CDC interface. IC Role / Device Role / Timing Role: Central controller acquiring analog sensor outputs via 10-bit ADC, performing basic signal processing, and managing USB file transfer or virtual COM port. Use Value: 4 kB EEPROM retains patient history and calibration coefficients across power cycles; Deep power-down mode extends battery life beyond 12 months. |
Use Scenario: Contact-based smart card reader for access control or payment terminals, compliant with ISO/IEC 7816-3 asynchronous T=0 protocol. IC Role / Device Role / Timing Role: USART configured in smart card mode providing precise bit timing, clock output (CLKOUT), and automatic guard time management. Use Value: Hardware-supported smart card interface eliminates bit-banging; CLKOUT pin delivers stable 3.57 MHz or 4.91 MHz clock directly to card slot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC11U37FBD64/401 | 64-pin LQFP, 32 kB flash, 12 kB SRAM, 4 kB EEPROM, 54 GPIO, USB + 2×USART + 2×SSP + I²C | Higher I/O count and SRAM; supports more complex protocols simultaneously (e.g., dual USB + RS-485) | Select when >40 GPIO or additional serial interfaces are required; not pin-compatible with LPC11U24FBD48/40EL. |
| STM32F072RBT6 | ARM Cortex-M0, 128 kB flash, 16 kB SRAM, no EEPROM, USB 2.0 FS, 12-bit ADC (16 ch), 51 GPIO, LQFP64 | Higher ADC resolution and channel count; no integrated EEPROM; larger flash for complex stacks | Choose for applications needing higher analog precision or larger firmware; requires external EEPROM for parameter storage. |
Compared with LPC11U24FBD48/40EL, LPC11U37FBD64/401 offers expanded I/O and memory but requires PCB redesign, while STM32F072RBT6 provides superior ADC performance and flash headroom at the cost of EEPROM integration and LQFP48 compatibility.
Availability
LPC11U24FBD48/40EL is available at Aetrix Electronics and suitable for USB peripheral design, industrial gateway development, and portable medical instrumentation requiring stable component supply and long-term manufacturability.
Supply support for LPC11U24FBD48/40EL 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 LPC11U2x product line was designed specifically for cost-sensitive, USB-connected embedded applications requiring low power, small footprint, and rapid time-to-market - emphasizing ROM-resident USB functionality and simplified system integration.
FAQ
What is the maximum operating frequency of the LPC11U24FBD48/40EL?
The LPC11U24FBD48/40EL 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 PLL. This frequency is fully supported across the specified industrial temperature range (−40 °C to +85 °C) and 1.8–3.6 V supply.
Does the LPC11U24FBD48/40EL include on-chip EEPROM, and what are its write characteristics?
Yes, the LPC11U24FBD48/40EL includes 4 kB of on-chip EEPROM that is byte-erasable and byte-programmable. Write operations are performed via In-Application Programming (IAP) calls from the ROM bootloader, with typical write time of 10 ms per byte and endurance rated for 100,000 write cycles - sufficient for infrequent parameter updates in medical or industrial logging applications.
How does the USB interface on the LPC11U24FBD48/40EL differ from standard USB-capable MCUs?
The LPC11U24FBD48/40EL integrates a full-speed USB 2.0 device controller with ROM-resident USB device stack (HID, CDC, MSC classes), eliminating the need to allocate flash space for USB firmware or develop low-level drivers. Its USB_FTOGGLE pin (PIO0_1) provides hardware-generated SOF signaling, and SoftConnect (via PIO0_6) enables software-controlled USB attachment without external components.
Can the LPC11U24FBD48/40EL enter ultra-low-power modes, and how is wake-up managed?
Yes, the LPC11U24FBD48/40EL supports Deep power-down mode drawing less than 1 µA. Wake-up is managed exclusively through the dedicated WAKEUP pin (PIO0_16), which features built-in 20 ns glitch filtering. An external LOW pulse on this pin exits Deep power-down and restores full operation - no additional external circuitry is required for battery-powered USB peripherals.
What are the analog input capabilities of the LPC11U24FBD48/40EL?
The LPC11U24FBD48/40EL features a 10-bit successive approximation register (SAR) ADC with eight selectable input channels (AD0–AD7), each mapped to dedicated GPIO pins. The ADC uses VDD as reference, supports single-ended sampling, and achieves 1.0 LSB integral nonlinearity. Conversion is triggered by software, timer match, or external event, with typical throughput of 400 kSPS.
LPC11U24FBD48/40EL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-LQFP
- Series:
- LPC11Uxx
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- I2C, Microwire, SPI, SSI, SSP, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, POR, WDT
- Number of I/O:
- 40
- Program Memory Size:
- 32KB (32K 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 SAR
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LPC11U24FBD48/40EL FAQ
1.How can I place an order for LPC11U24FBD48/40EL through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC11U24FBD48/40EL 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 LPC11U24FBD48/40EL reliable?
The price and inventory of LPC11U24FBD48/40EL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC11U24FBD48/40EL is usually 5 days.
3.What payment methods are accepted for LPC11U24FBD48/40EL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC11U24FBD48/40EL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC11U24FBD48/40EL?
LPC11U24FBD48/40EL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC11U24FBD48/40EL 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 LPC11U24FBD48/40EL?
For technical support, including LPC11U24FBD48/40EL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC11U24FBD48/40EL requirements.
6.How does Aetrix verify that LPC11U24FBD48/40EL is sourced from the original manufacturer or authorized distributors?
All LPC11U24FBD48/40EL 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 LPC11U24FBD48/40EL meets industry standards.
7.What is the process for return or replacement of LPC11U24FBD48/40EL?
All LPC11U24FBD48/40EL units undergo pre-shipment inspection (PSI). If there is an issue with LPC11U24FBD48/40EL, 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 LPC11U24FBD48/40EL part is unused and in its original packaging.
Return procedure for LPC11U24FBD48/40EL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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