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NXP Semiconductors LPC1114FBD48/323,1
- Part No.:
- LPC1114FBD48/323,1
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
LPC1114FBD48/323,1.pdf
- Description:
- IC MCU 32BIT 48KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:160
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Product details
Overview
LPC1114FBD48/323 from NXP Semiconductors is an ARM Cortex-M0 32-bit microcontroller in LQFP48 package, operating at up to 50 MHz with 48 kB flash, 8 kB SRAM, one UART with RS-485 support, two SPI interfaces, Fast-mode Plus I²C (1 Mbit/s), and a 10-bit ADC with 8-channel input multiplexing - deployed in smart lighting control systems requiring deterministic real-time response and low-power operation.
For engineers reviewing the LPC1114FBD48/323 datasheet, LPC1114FBD48/323 pinout, LPC1114FBD48/323 application, or LPC1114FBD48/323 equivalent, this page delivers verified technical context, validated pin functions for LQFP48, confirmed power profile support, windowed watchdog capability, and direct alternative options for migration or second-sourcing.
Technical Context
The LPC1114FBD48/323 implements the ARM Cortex-M0 core with Nested Vectored Interrupt Controller (NVIC) and supports Serial Wire Debug (SWD). Its clock system integrates a 12 MHz ±1 % internal RC oscillator, crystal oscillator (1–25 MHz), programmable watchdog oscillator (9.4 kHz–2.3 MHz), and PLL enabling full-speed CPU operation without external high-frequency crystals.
It belongs to the LPC1100XL series, featuring power profiles in boot ROM, windowed watchdog timer (WWDT), configurable open-drain GPIO mode, and 42 general-purpose I/O pins with edge/level-sensitive interrupt capability - all optimized for embedded applications demanding robust power management and peripheral flexibility in industrial temperature range (−40 °C to +85 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 32-bit RISC architecture with NVIC and SysTick timer for deterministic real-time task handling. |
| Max Clock Frequency | 50 MHz - enables fast signal processing and responsive control loops without external high-frequency crystal dependency. |
| Flash Memory | 48 kB - sufficient for firmware with bootloader, communication stacks (e.g., Modbus RTU over RS-485), and application logic. |
| SRAM | 8 kB - supports multiple concurrent buffers (UART FIFO, ADC sampling, SPI transaction queues) without external memory. |
| I/O Pins | 42 GPIO - provides ample routing for multi-peripheral interfacing (I²C sensors, SPI displays, UART debug/RS-485 bus, ADC inputs). |
| Analog Input | 10-bit ADC with 8-channel multiplexer - enables simultaneous monitoring of voltage, current, temperature, and ambient light in white goods or lighting systems. |
| Serial Interfaces | 1× UART (RS-485 capable), 2× SPI (SSP features), 1× I²C (Fast-mode Plus, 1 Mbit/s) - supports mixed-protocol sensor networks and industrial bus connectivity. |
| Power Management | Integrated PMU with Sleep, Deep-sleep, and Deep power-down modes plus boot-ROM power profiles - reduces active current to <200 µA in Deep-sleep with wake-up on 13 GPIO pins. |
Pinout & Package
LQFP48 package: plastic low-profile quad flat package, 48 leads, body size 7 × 7 × 1.4 mm, standard JEDEC footprint compatible with automated PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–48 (see Fig 4) | GPIO / Peripheral Function Multiplexing | All 48 pins support configurable digital I/O; specific pins assigned to UART (RXD/TXD/CTS/RTS), SPI (SCK0/MISO0/MOSI0/SSEL0, SCK1/MISO1/MOSI1), I²C (SDA/SCL), ADC (AD[0:7]), timers (CTxxBx_MAT/CAP), CLKOUT, and SWD (SWCLK/SWDIO). |
| RESET/PIO0_0 | Active-low reset input | Hardware reset trigger; also serves as GPIO PIO0_0 when not asserted - enables external watchdog or push-button recovery. |
| XTALIN / XTALOUT | Crytal oscillator interface | Supports 1–25 MHz crystal for precise timing; optional bypass for internal RC oscillator use only. |
| VDD (Pins 13, 25, 48) | Supply voltage | Single 1.8 V–3.6 V rail powers core, analog, and I/O - simplifies power design and eliminates level-shifting for 3.3 V peripherals. |
| VSS (Pins 14, 24, 37) | Ground reference | Dedicated ground pins per functional domain reduce noise coupling between analog (ADC), digital, and clock circuits. |
Key Features
| Feature | Design Value |
|---|---|
| Windowed Watchdog Timer (WWDT) | Enables fail-safe operation in safety-critical lighting or alarm systems by detecting both early and late service window violations. |
| Power Profiles in Boot ROM | One function call selects pre-tuned performance/power trade-offs - accelerates development of battery-powered or thermally constrained devices. |
| Configurable Open-Drain Mode | Allows direct connection to shared buses (e.g., I²C, SMBus) without external pull-ups on selected GPIO pins. |
| High-Current GPIO Drivers | 20 mA sink on I²C pins and 20 mA source on one dedicated pin - drives LEDs or small relays directly, reducing BOM count. |
| RS-485 UART Support | Hardware-level polarity control and fractional baud rate generation enable robust half-duplex differential communication over long cables (≥1200 m). |
| 42 GPIO with Wake-Up Capability | Up to 13 pins can wake CPU from Deep-sleep - ideal for motion-triggered lighting or alarm panel standby monitoring. |
Applications
| Smart Lighting Control | Industrial Alarm Panel |
|---|---|
Use Scenario: Dimmable LED driver with occupancy sensing, ambient light feedback, and DALI/KNX gateway functionality. IC Role / Device Role / Timing Role: Main controller executing lighting algorithms, managing RS-485 DALI bus, reading ADC-based light/PIR sensors, and driving PWM outputs via GPIO-timer match registers. Use Value: 48 kB flash stores dual-firmware images; 8 kB SRAM buffers DALI telegrams; WWDT ensures fail-safe dimming state retention during transient faults. | Use Scenario: Standalone fire/burglar alarm panel with keypad interface, siren control, zone monitoring, and wired RS-485 backhaul to central station. IC Role / Device Role / Timing Role: Central MCU handling keypad scan, zone input polling (via GPIO interrupts), siren tone generation (PWM timers), and RS-485 communication stack. Use Value: 42 GPIO accommodate 16-zone inputs + 4-keypad rows/columns + 2-siren drivers; Deep-sleep mode draws <200 µA during standby while monitoring wake-up pins. |
| White Goods UI Module | eMetering Data Logger |
Use Scenario: Appliance control board for washing machine display, button input, motor control signals, and temperature sensing. IC Role / Device Role / Timing Role: User interface coordinator reading rotary encoder/keys, updating segmented LCD via GPIO bit-banging, reading thermistor ADC values, and generating motor enable pulses. Use Value: 10-bit ADC resolves 0.5 °C temperature steps; open-drain GPIO safely interfaces with legacy 5 V keypad matrix; power profiles optimize responsiveness vs. idle current. | Use Scenario: Electricity meter data concentrator collecting pulse counts, voltage/current samples, and time-of-use logs for AMR transmission. IC Role / Device Role / Timing Role: Data acquisition engine sampling CT/PT analog inputs via ADC, timestamping events using 32-bit timers, storing logs in flash, and transmitting via RS-485 Modbus. Use Value: 48 kB flash holds 30+ days of 15-minute interval logs; WWDT prevents firmware lockup during extended field deployment; 50 MHz CPU handles CRC-16 and Modbus framing in real time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC1114FBD48/333 | 56 kB flash, same 8 kB SRAM, identical LQFP48 pinout and peripheral set. | Supports larger firmware (e.g., embedded web server, OTA update stack) without hardware redesign. | Select when future firmware expansion headroom is required; drop-in replacement with no layout change. |
| LPC11U14FBD48/301 | Same core/peripherals but adds USB 2.0 device controller and enhanced GPIO interrupt logic; 32 kB flash, 8 kB SRAM. | Suitable for USB-connected diagnostic tools or PC-interfaced meters where RS-485 is secondary. | Choose if USB host/device connectivity is mandatory; requires minor firmware adaptation due to USB stack integration. |
Compared with LPC1114FBD48/323, the /333 variant offers 16.7 % more flash for complex protocol stacks or dual-application storage, while the LPC11U14FBD48/301 trades flash capacity for integrated USB - making it optimal for PC-linked commissioning tools but less suitable for pure RS-485 field deployments.
Availability
LPC1114FBD48/323 is available at Aetrix Electronics and suitable for smart lighting control, industrial alarm panels, white goods UI modules, and eMetering data loggers requiring stable component supply across production lifecycles.
Supply support for LPC1114FBD48/323 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.
The LPC1100XL series - including LPC1114FBD48/323 - was designed for cost-sensitive, low-power embedded control in industrial temperature environments, emphasizing peripheral richness, power profile agility, and robust watchdog supervision.
FAQ
What is the maximum operating frequency of the LPC1114FBD48/323?
The LPC1114FBD48/323 operates at a maximum CPU frequency of 50 MHz. This is achieved using the on-chip PLL, which can be driven by either the internal 12 MHz RC oscillator or an external crystal (1–25 MHz). The 50 MHz clock enables real-time execution of communication stacks like Modbus RTU and fast ADC sampling without external clock sources.
Does the LPC1114FBD48/323 support RS-485 communication?
Yes, the LPC1114FBD48/323 supports RS-485 communication through its UART peripheral, which includes hardware-level polarity control and fractional baud rate generation. This allows reliable half-duplex differential signaling over distances up to 1200 m - essential for industrial lighting networks and alarm system backhaul links.
How much flash and SRAM does the LPC1114FBD48/323 have?
The LPC1114FBD48/323 integrates 48 kB of on-chip flash memory and 8 kB of SRAM. The flash accommodates firmware with bootloader, communication protocols, and application logic; the SRAM supports concurrent buffering for UART, SPI, and ADC operations without external memory expansion.
What package type is used for the LPC1114FBD48/323?
The LPC1114FBD48/323 uses the LQFP48 package: a plastic low-profile quad flat package with 48 leads, body dimensions of 7 × 7 × 1.4 mm, and standard JEDEC-compliant footprint. This package supports automated reflow assembly and provides full access to all 42 GPIO and peripheral signals.
Does the LPC1114FBD48/323 include a windowed watchdog timer?
Yes, the LPC1114FBD48/323 includes a windowed watchdog timer (WWDT) as part of its LPC1100XL series feature set. The WWDT requires service within a defined time window - preventing both premature and delayed resets - enhancing reliability in safety-critical applications such as alarm systems and lighting controllers.
Can the LPC1114FBD48/323 operate across industrial temperature ranges?
Yes, the LPC1114FBD48/323 is rated for operation from −40 °C to +85 °C ('F' temperature grade), meeting industrial environmental requirements. This makes it suitable for deployment in outdoor lighting fixtures, factory-floor alarm panels, and appliance control modules exposed to wide thermal swings.
LPC1114FBD48/323,1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-LQFP
- Series:
- LPC1100XL
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0
- Core Size:
- 32-Bit Single-Core
- Speed:
- 50MHz
- Connectivity:
- I2C, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, WDT
- Number of I/O:
- 42
- Program Memory Size:
- 48KB (48K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K 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:
LPC1114FBD48/323,1 FAQ
1.How can I place an order for LPC1114FBD48/323,1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC1114FBD48/323,1 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 LPC1114FBD48/323,1 reliable?
The price and inventory of LPC1114FBD48/323,1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC1114FBD48/323,1 is usually 5 days.
3.What payment methods are accepted for LPC1114FBD48/323,1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC1114FBD48/323,1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC1114FBD48/323,1?
LPC1114FBD48/323,1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC1114FBD48/323,1 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 LPC1114FBD48/323,1?
For technical support, including LPC1114FBD48/323,1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC1114FBD48/323,1 requirements.
6.How does Aetrix verify that LPC1114FBD48/323,1 is sourced from the original manufacturer or authorized distributors?
All LPC1114FBD48/323,1 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 LPC1114FBD48/323,1 meets industry standards.
7.What is the process for return or replacement of LPC1114FBD48/323,1?
All LPC1114FBD48/323,1 units undergo pre-shipment inspection (PSI). If there is an issue with LPC1114FBD48/323,1, 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 LPC1114FBD48/323,1 part is unused and in its original packaging.
Return procedure for LPC1114FBD48/323,1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LPC1114FBD48/323,1 Tags
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ATTINY4-TSHR
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