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NXP Semiconductors LPC1115FET48/303QL
- Part No.:
- LPC1115FET48/303QL
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-TFBGA
- Datasheet:
-
LPC1115FET48/303QL.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48TFBGA
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LPC1115FET48/303 from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller in TFBGA48 package, operating up to 50 MHz with 64 kB flash and 8 kB SRAM. It integrates UART with RS-485 support, Fast-mode Plus I²C (1 Mbit/s), dual SPI, 10-bit ADC (8-channel), four timers, and 42 GPIO pins - deployed in smart metering and industrial control systems requiring compact footprint and low-power operation.
For engineers reviewing the LPC1115FET48/303 datasheet, LPC1115FET48/303 pinout, LPC1115FET48/303 application, or LPC1115FET48/303 equivalent, key selection criteria include its TFBGA48 ball grid array packaging for high-density PCBs, LPC1100XL series power profiles enabling dynamic performance/power trade-offs, windowed watchdog timer, and full I²C Fast-mode Plus compliance at 1 Mbit/s.
Technical Context
The LPC1115FET48/303 belongs to the LPC1100XL series, featuring a programmable windowed watchdog timer, configurable open-drain GPIO mode, and 256-byte page erase capability for flash memory. Its clock system includes a 12 MHz ±1 % internal RC oscillator, crystal oscillator (1–25 MHz), and PLL for CPU frequency scaling up to 50 MHz without external high-frequency crystals.
It supports three low-power modes - Sleep, Deep-sleep, and Deep power-down - managed by an integrated PMU, with wake-up via up to 13 functional pins. The device uses a single 1.8 V to 3.6 V supply and includes brownout detection with four programmable thresholds for interrupt or reset.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 32-bit RISC architecture optimized for deterministic real-time control and low gate count. |
| Max Clock Frequency | 50 MHz - enables real-time processing of sensor data and communication stacks in metering and lighting applications. |
| Flash Memory | 64 kB - sufficient for firmware with bootloader, communication protocol stacks (e.g., DLMS/COSEM), and field-upgradable logic. |
| SRAM | 8 kB - supports multiple concurrent buffers for UART FIFO, ADC sampling, and I²C transaction queues. |
| I²C Interface | Fast-mode Plus compliant (1 Mbit/s) - allows high-speed sensor or EEPROM interfacing without timing bottlenecks. |
| ADC Resolution | 10-bit with 8 input channels - delivers adequate precision for analog monitoring in white goods and alarm system inputs. |
| GPIO Count | 42 pins - provides flexible peripheral routing and hardware redundancy for industrial I/O expansion. |
| Package | TFBGA48 (4.5 × 4.5 × 0.7 mm) - enables ultra-compact board layout ideal for space-constrained embedded modules. |
Pinout & Package
Package: TFBGA48 - plastic thin fine-pitch ball grid array with 48 solder balls, body size 4.5 mm × 4.5 mm × 0.7 mm, suitable for automated SMT assembly and high-density routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Balls A1, A3, A5, C1, C5, E1, E5, G1) | Power supply | Eight dedicated 1.8–3.6 V supply connections ensure stable core and I/O rail operation under dynamic load. |
| VSS (Balls A2, A4, B1, B3, B5, D1, D5, F1, F5, H2, H4) | GND reference | Eleven ground balls minimize impedance and reduce noise coupling across analog and digital domains. |
| SWDIO / PIO1_3 / AD4 / CT32B1_MAT2 (Ball C2) | Debug & GPIO | Single-pin Serial Wire Debug interface enables non-intrusive firmware debugging and programming without dedicated JTAG pins. |
| SWCLK / PIO0_10 / SCK0 / CT16B0_MAT2 (Ball C3) | Debug clock & SPI | Shared debug clock and SPI0 clock pin reduces pin count while supporting in-circuit programming and peripheral communication. |
| RESET / PIO0_0 (Ball D2) | Reset input | Active-low asynchronous reset pin with internal pull-up ensures reliable initialization after power-on or brownout events. |
| XTALIN / XTALOUT (Balls D3, E2) | Clock source | Differential crystal oscillator inputs support precise timing for UART baud rate generation and real-time clock functions. |
| PIO0_4 / SCL & PIO0_5 / SDA (Balls E3, F2) | I²C bus | Dedicated Fast-mode Plus I²C pins with internal pull-ups enable robust multi-master communication with sensors and PMICs. |
| PIO1_6 / RXD & PIO1_7 / TXD (Balls F3, G2) | UART channel | Full-duplex UART with fractional baud rate generator supports RS-485 transceiver interfacing for long-distance industrial networks. |
Key Features
| Feature | Design Value |
|---|---|
| Windowed Watchdog Timer (WWDT) | Prevents runaway code execution with time-windowed refresh requirement - critical for safety-critical metering firmware. |
| Configurable Open-Drain GPIO | Enables direct connection to I²C bus or wired-AND logic without external pull-ups, reducing BOM cost and board area. |
| Power Profiles in Boot ROM | One function call selects pre-validated combinations of clock, voltage, and peripheral settings - accelerates low-power design validation. |
| 256-Byte Flash Page Erase | Allows fine-grained firmware updates and parameter storage without erasing full sectors - essential for over-the-air (OTA) field upgrades. |
| High-Current Sink on I²C Pins | 20 mA sink capability on SDA/SCL supports strong bus driving in noisy industrial environments with long traces. |
| Wake-Up from Deep-Sleep | Up to 13 GPIO pins can trigger wake-up - enables event-driven operation with sub-1 µA sleep current in battery-powered devices. |
Applications
| Smart Metering | Industrial Lighting Control |
|---|---|
Use Scenario: Embedded metrology unit in electricity/water meters performing pulse counting, tariff switching, and secure data logging. IC Role / Device Role / Timing Role: Main controller executing DLMS/COSEM protocol stack, managing RS-485 communication, and coordinating ADC sampling for energy measurement. Use Value: 64 kB flash stores encrypted firmware and tariff tables; 42 GPIO support optical isolation interfaces and tamper detection circuits. | Use Scenario: DALI or 0–10 V dimming controller for LED streetlights with thermal monitoring and fault reporting. IC Role / Device Role / Timing Role: Real-time PWM generator and I²C master for ambient light/temperature sensors, with UART for remote configuration. Use Value: Dual SPI supports external flash for lighting profiles; Fast-mode Plus I²C ensures responsive sensor polling at 1 Mbit/s. |
| Home Alarm Systems | White Goods Interface Module |
Use Scenario: Central panel hub aggregating door/window contact sensors, PIR motion detectors, and siren drivers. IC Role / Device Role / Timing Role: Low-latency interrupt handler for edge-triggered security inputs, managing local buzzer and cloud connectivity via UART. Use Value: Windowed WDT guarantees fail-safe behavior during intrusion events; 10-bit ADC monitors battery voltage and sensor supply rails. | Use Scenario: Appliance control module for washing machines or refrigerators handling motor control, temperature sensing, and user display. IC Role / Device Role / Timing Role: System coordinator managing PWM-driven motor drivers, reading thermistors via ADC, and driving segmented LCD via GPIO. Use Value: 8 kB SRAM buffers sensor data across wash cycles; TFBGA48 package fits tight control board layouts behind appliance panels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC1114FBD48/303 | 32 kB flash, same TFBGA48-compatible LQFP48 pinout, identical peripherals except reduced flash capacity. | Suitable for cost-sensitive designs where firmware size remains under 32 kB and LQFP48 is preferred over BGA. | Select when PCB layout uses LQFP48 and firmware footprint is constrained; not drop-in due to different package and thermal profile. |
| LPC11U14FHN33/203 | Same LPC1100XL series, 32 kB flash, HVQFN33 package (33-pin), includes USB 2.0 device controller not present in LPC1115FET48/303. | Preferred for USB-connected human-interface devices; lacks RS-485 UART but adds USB enumeration and HID support. | Choose when USB connectivity is required and space permits HVQFN33; incompatible pinout and missing RS-485 limits direct substitution. |
Compared with LPC1114FBD48/303 and LPC11U14FHN33/203, the LPC1115FET48/303 offers the largest flash (64 kB) in the smallest footprint (TFBGA48), making it optimal for firmware-rich, space-constrained industrial endpoints where RS-485 and I²C Fast-mode Plus are mandatory.
Availability
LPC1115FET48/303 is available at Aetrix Electronics and suitable for smart metering, industrial lighting control, and home alarm systems requiring stable component supply across extended product lifecycles.
Supply support for LPC1115FET48/303 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 LPC1100XL series - including LPC1115FET48/303 - was designed for cost-sensitive, low-power embedded applications demanding ARM Cortex-M0 performance in minimal form factors, with emphasis on industrial reliability and firmware flexibility.
FAQ
What is the maximum operating frequency of the LPC1115FET48/303?
The LPC1115FET48/303 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 supports real-time execution of communication protocols and sensor processing without external clock sources.
Does the LPC1115FET48/303 support I²C Fast-mode Plus?
Yes, the LPC1115FET48/303 supports I²C Fast-mode Plus with a data rate of 1 Mbit/s. This capability is confirmed for the LPC1100XL series and applies specifically to the LPC1115FET48/303, enabling high-speed communication with fast sensors and EEPROMs while maintaining full compatibility with standard I²C addressing and arbitration.
How many GPIO pins does the LPC1115FET48/303 provide?
The LPC1115FET48/303 provides up to 42 general-purpose I/O pins. These are fully configurable with pull-up/pull-down resistors and open-drain mode (LPC1100XL series feature), and support edge- and level-sensitive interrupts. All 42 GPIOs are accessible in the TFBGA48 package per the official pinout diagram (Figure 5).
What is the flash memory size and erase granularity of the LPC1115FET48/303?
The LPC1115FET48/303 contains 64 kB of on-chip flash memory with 256-byte page erase functionality. This granular erase capability - exclusive to the LPC1100XL series - allows partial firmware updates and parameter storage without disturbing adjacent code sections, simplifying field upgrades and data logging implementations.
Is the LPC1115FET48/303 compatible with the LPC1114FBD48/303 in terms of software and peripheral registers?
Yes, the LPC1115FET48/303 is software-compatible with the LPC1114FBD48/303 at the register and instruction-set level, as both belong to the LPC1100XL family and share identical peripheral IP blocks, memory maps, and NVIC structure. Firmware developed for LPC1114FBD48/303 will run unmodified on LPC1115FET48/303, though flash size differences must be accounted for in linker scripts.
LPC1115FET48/303QL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-TFBGA
- Series:
- LPC1100XL
- 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, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, WDT
- Number of I/O:
- 42
- Program Memory Size:
- 64KB (64K 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:
LPC1115FET48/303QL FAQ
1.How can I place an order for LPC1115FET48/303QL through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC1115FET48/303QL 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 LPC1115FET48/303QL reliable?
The price and inventory of LPC1115FET48/303QL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC1115FET48/303QL is usually 5 days.
3.What payment methods are accepted for LPC1115FET48/303QL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC1115FET48/303QL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC1115FET48/303QL?
LPC1115FET48/303QL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC1115FET48/303QL 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 LPC1115FET48/303QL?
For technical support, including LPC1115FET48/303QL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC1115FET48/303QL requirements.
6.How does Aetrix verify that LPC1115FET48/303QL is sourced from the original manufacturer or authorized distributors?
All LPC1115FET48/303QL 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 LPC1115FET48/303QL meets industry standards.
7.What is the process for return or replacement of LPC1115FET48/303QL?
All LPC1115FET48/303QL units undergo pre-shipment inspection (PSI). If there is an issue with LPC1115FET48/303QL, 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 LPC1115FET48/303QL part is unused and in its original packaging.
Return procedure for LPC1115FET48/303QL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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