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NXP Semiconductors LPC1225FBD48/301EL
- Part No.:
- LPC1225FBD48/301EL
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
LPC1225FBD48/301EL.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,061
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Product details
Overview
LPC1225FBD48/301 from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller operating at up to 45 MHz, featuring 64 kB flash, 8 kB SRAM, a 10-bit ADC with 8 channels, two analog comparators, two UARTs (one with RS-485 support), I²C-Fast-mode Plus (1 Mbit/s), SSP/SPI, and 39 GPIO pins in an LQFP48 package - deployed in industrial alarm systems and white goods control.
For engineers reviewing the LPC1225FBD48/301 datasheet, LPC1225FBD48/301 pinout, LPC1225FBD48/301 application, or LPC1225FBD48/301 equivalent, key selection criteria include its 45 MHz Cortex-M0 core performance (1.51 CoreMark/MHz), 39 GPIO count in compact LQFP48, IEC-60335 Class B-certified Windowed Watchdog Timer, and dual UART + I²C-FM+ peripheral set for factory automation edge nodes.
Technical Context
The LPC1225FBD48/301 implements ARM Cortex-M0 architecture with Nested Vectored Interrupt Controller (NVIC) and Serial Wire Debug (SWD), supporting zero-wait-state execution at 30 MHz and one-wait-state operation up to 45 MHz from flash. Its ROM-based integer division library delivers deterministic cycle timing and reduced code footprint versus software implementations.
It integrates a clock generation unit with 1–25 MHz crystal oscillator input, 12 MHz ±1 % internal RC oscillator, and PLL for full-speed CPU operation; supports RTC with 32 kHz oscillator (RTCXIN/RTCXOUT), brownout detection with three thresholds, and three low-power modes (Sleep, Deep-sleep, Deep power-down) with wake-up via RTC or 12 port pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, up to 45 MHz - enables real-time deterministic control with Thumb instruction set and 50 % higher code density vs. 8/16-bit MCUs. |
| Flash / SRAM | 64 kB flash / 8 kB SRAM - sufficient for firmware with bootloader, field-upgradable applications, and moderate RTOS usage. |
| ADC | 10-bit, 8-channel - supports sensor monitoring (temperature, voltage) in eMetering and lighting systems with programmable sampling. |
| Timers | Four general-purpose timers (two 32-bit, two 16-bit) with capture/match - enables PWM generation, pulse-width measurement, and encoder interfacing. |
| Communication | Two UARTs (one with RS-485/modem support), I²C-FM+ (1 Mbit/s), SSP/SPI - meets industrial networking requirements with robust serial interface redundancy. |
| GPIO | 39 configurable I/O pins with programmable pull-up, open-drain, glitch filter, and four high-current outputs - supports direct LED driving and relay control without external buffers. |
| Power Modes | Sleep, Deep-sleep, Deep power-down - achieves ultra-low standby current; wake-up via RTC or 12 GPIO pins enables battery-backed alarm system operation. |
Pinout & Package
LQFP48 package: plastic low-profile quad flat package, 48 leads, body size 7 × 7 × 1.4 mm (SOT313-2), 3.3 V supply only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XTALIN / XTALOUT | Crystal oscillator input/output | Supports 1–25 MHz external crystal for precise system clock; required for full accuracy in RTC and baud rate generation. |
| RESET/PIO0_13 | Reset input / GPIO | Active-low reset with external pull-up mandatory for Deep power-down mode; default function is reset, not GPIO. |
| SWDIO / SWCLK | Serial Wire Debug I/O and clock | Enables non-intrusive debugging and programming using standard ARM SWD protocol; occupies dedicated pins (P0.25/P0.26). |
| VDD(3V3) / VSS | Main power / ground | 3.3 V supply powers core, peripherals, and ADC reference; separate VDD(IO) and VSSIO pins ensure clean I/O rail decoupling. |
| PIO0_0–PIO0_29, PIO1_0–PIO1_6, PIO2_0–PIO2_15 | General-purpose I/O | 39 total GPIO in LQFP48 configuration; each pin supports multiple functions (UART, I²C, timer, comparator) selected via IOCON register. |
| AD0–AD7 | ADC inputs | Analog inputs mapped to P0.30, P0.31, P1.0–P1.5 - eight single-ended channels referenced to VDD(3V3) for sensor signal acquisition. |
| ACMP0_O / ACMP1_O | Analog comparator outputs | Comparator outputs on P0.27 and P0.28 drive timer match signals or emulate 555 timer behavior - enable hardware-level threshold detection without CPU intervention. |
Key Features
| Feature | Design Value |
|---|---|
| ROM-based integer division | Delivers several times faster arithmetic than software libraries with deterministic cycle count - critical for time-sensitive control loops and PID calculations. |
| IEC-60335 Class B WDT | Windowed Watchdog Timer certified for household appliance safety compliance - ensures fail-safe recovery in white goods and alarm systems. |
| I²C Fast-mode Plus | 1 Mbit/s data rate with multi-address recognition and monitor mode - supports high-speed sensor bus communication in lighting and industrial networks. |
| High-current GPIO | Four pins (P0.27, P0.28, P0.29, P0.12) support >4 mA output - directly drives LEDs, small relays, or optocouplers without external drivers. |
| EEPROM emulation | 512-byte flash page erase enables fine-grained wear leveling and robust parameter storage - simplifies field firmware updates and calibration retention. |
Applications
| Industrial Alarm Systems | eMetering |
|---|---|
Use Scenario: Monitoring door/window sensors, smoke detectors, and intrusion zones in commercial security panels with local decision logic and wired/wireless reporting. IC Role / Device Role / Timing Role: Central controller executing sensor polling, event logging, tamper detection, and RS-485 communication to central hub. Use Value: 39 GPIO enable direct connection to 8+ zone inputs and status LEDs; IEC-60335 WDT guarantees safe shutdown on fault; dual UART supports local debug + remote telemetry. | Use Scenario: Residential electricity, gas, or water meter with pulse counting, tamper detection, and optical/RS-485 data upload. IC Role / Device Role / Timing Role: Metering engine performing ADC-based current/voltage sampling, pulse accumulation, and secure data formatting. Use Value: 10-bit ADC with 8 channels acquires sensor data; RTC enables time-stamped consumption logs; Deep power-down mode extends battery life beyond 10 years. |
| Lighting Control | White Goods |
Use Scenario: Smart LED driver board managing dimming profiles, thermal protection, and DALI/DMX interface in commercial luminaires. IC Role / Device Role / Timing Role: Real-time PWM generator and communication bridge between DALI bus and LED power stage. Use Value: Four 32-bit timers provide independent PWM channels for RGBW control; I²C-FM+ interfaces with ambient light and temperature sensors at 1 Mbit/s. | Use Scenario: Washing machine main control board handling motor commutation, water level sensing, heater control, and user interface. IC Role / Device Role / Timing Role: System-on-chip managing motor drivers, ADC-based load sensing, and front-panel button/display I/O. Use Value: High-current GPIO drive relays and triacs directly; comparator outputs trigger emergency stop on overcurrent; 64 kB flash accommodates motor control algorithms and UI firmware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC1224FBD48/101 | 32 kB flash, 4 kB SRAM, no ROM-based divide library - lower memory and compute capability. | Suitable for simpler sensor nodes or basic timer/control tasks without complex math or bootloader space needs. | Select when cost sensitivity outweighs need for field-upgradeable firmware or advanced arithmetic performance. |
| LPC1115FBD48/301 | ARM Cortex-M0, 32 kB flash, 8 kB SRAM, no I²C-FM+, no comparator outputs, 42 GPIO - different peripheral mix and smaller feature set. | Targeted at entry-level control where RS-485 and analog comparator-triggered events are unnecessary. | Choose if I²C speed ≤400 kbit/s suffices and hardware-level comparator feedback is not required for safety or timing-critical response. |
Compared with LPC1224FBD48/101 and LPC1115FBD48/301, the LPC1225FBD48/301 uniquely balances 64 kB flash for bootloader + application, I²C-FM+ for fast sensor buses, and dual comparator outputs for hardware-accelerated fault response - making it optimal for mid-tier industrial controllers requiring safety certification and field update capability.
Availability
LPC1225FBD48/301 is available at Aetrix Electronics and suitable for industrial alarm systems, eMetering deployments, and white goods control requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for LPC1225FBD48/301 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 applications.
The LPC122x product line was designed specifically for cost-sensitive, reliability-critical industrial control applications - emphasizing low-power operation, functional safety features (IEC-60335 WDT), and rich analog/digital peripheral integration in compact packages.
FAQ
What is the maximum operating frequency of the LPC1225FBD48/301?
The LPC1225FBD48/301 operates at a maximum CPU frequency of 45 MHz with one wait state from flash memory. At 30 MHz, it achieves zero-wait-state execution - enabling deterministic real-time response for time-critical control tasks while maintaining code efficiency.
How many GPIO pins does the LPC1225FBD48/301 provide in its LQFP48 package?
The LPC1225FBD48/301 provides 39 General Purpose I/O pins in the LQFP48 package. These include configurable digital I/O with programmable pull-up resistors, open-drain mode, glitch filtering, and four high-current output drivers capable of >4 mA per pin.
Does the LPC1225FBD48/301 support I²C Fast-mode Plus?
Yes, the LPC1225FBD48/301 includes an I²C-bus interface compliant with Fast-mode Plus specifications, supporting data rates up to 1 Mbit/s. It also features multiple address recognition and monitor mode - essential for high-speed sensor networks in lighting and industrial automation.
What safety certifications apply to the watchdog timer in the LPC1225FBD48/301?
The Windowed Watchdog Timer (WWDT) in the LPC1225FBD48/301 is certified to IEC-60335 Class B standards. This certification validates its suitability for household and similar appliances where functional safety and fail-safe recovery are mandatory requirements.
Can the LPC1225FBD48/301 perform in-system programming (ISP)?
Yes, the LPC1225FBD48/301 supports In-System Programming (ISP) and In-Application Programming (IAP) via its on-chip bootloader. This enables field firmware updates over UART or other serial interfaces without requiring external programming hardware - a key advantage for deployed eMetering and alarm systems.
LPC1225FBD48/301EL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-LQFP
- Series:
- LPC1200
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0
- Core Size:
- 32-Bit Single-Core
- Speed:
- 45MHz
- Connectivity:
- I2C, IrDA, Microwire, SPI, SSI, SSP, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, WDT
- Number of I/O:
- 39
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 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:
LPC1225FBD48/301EL FAQ
1.How can I place an order for LPC1225FBD48/301EL through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC1225FBD48/301EL 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 LPC1225FBD48/301EL reliable?
The price and inventory of LPC1225FBD48/301EL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC1225FBD48/301EL is usually 5 days.
3.What payment methods are accepted for LPC1225FBD48/301EL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC1225FBD48/301EL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC1225FBD48/301EL?
LPC1225FBD48/301EL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC1225FBD48/301EL 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 LPC1225FBD48/301EL?
For technical support, including LPC1225FBD48/301EL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC1225FBD48/301EL requirements.
6.How does Aetrix verify that LPC1225FBD48/301EL is sourced from the original manufacturer or authorized distributors?
All LPC1225FBD48/301EL 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 LPC1225FBD48/301EL meets industry standards.
7.What is the process for return or replacement of LPC1225FBD48/301EL?
All LPC1225FBD48/301EL units undergo pre-shipment inspection (PSI). If there is an issue with LPC1225FBD48/301EL, 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 LPC1225FBD48/301EL part is unused and in its original packaging.
Return procedure for LPC1225FBD48/301EL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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