My Inquiry
My Account
NXP Semiconductors LPC1225FBD48/301,1
- Part No.:
- LPC1225FBD48/301,1
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
LPC1225FBD48/301,1.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,030
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LPC1225FBD48/301 from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller targeting industrial automation and embedded control applications. It operates at up to 45 MHz, integrates 64 kB flash and 8 kB SRAM, features a 10-bit 8-channel ADC, two analog comparators with programmable output feedback, and supports UART, I²C-Fast Mode Plus (1 Mbit/s), and SSP/SPI interfaces. It is deployed in smart metering systems for real-time energy data acquisition and local processing.
For engineers reviewing the LPC1225FBD48/301 datasheet, LPC1225FBD48/301 pinout, LPC1225FBD48/301 application, or LPC1225FBD48/301 equivalent, key selection considerations include its 48-pin LQFP package with 39 GPIOs, deterministic integer division via ROM library, IEC-60335 Class B-certified Windowed Watchdog Timer, and support for in-field firmware updates via ISP/IAP over serial interfaces.
Technical Context
The LPC1225FBD48/301 implements the ARM Cortex-M0 core with Nested Vectored Interrupt Controller (NVIC) and Serial Wire Debug (SWD), enabling deterministic interrupt latency and low-overhead debug access. Its clock system includes a 1–25 MHz crystal oscillator, 12 MHz ±1 % internal RC oscillator, and PLL for flexible CPU clock generation up to 45 MHz.
Digital peripherals include a 21-channel Micro DMA controller, CRC engine, four general-purpose timers (two 32-bit, two 16-bit), and a 32-bit RTC with wake-up capability from Deep-sleep and Deep power-down modes. Analog functions are centered on an 8-channel 10-bit ADC and dual comparators whose outputs can trigger timer match events or emulate 555 timer behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, up to 45 MHz with one wait state from flash - delivers 1.51 CoreMark/MHz performance and high code density vs. 8/16-bit MCUs. |
| Memory | 64 kB on-chip flash (512-byte page erase) and 8 kB SRAM - enables fine-grained EEPROM emulation and boot-loading from any serial interface. |
| Analog Peripherals | 10-bit 8-channel ADC and two analog comparators with output feedback loop - supports sensor signal conditioning and threshold-triggered event generation. |
| Digital Interfaces | Two UARTs (one with RS-485/modem support), I²C-bus with Fast-mode Plus (1 Mbit/s), and SSP/SPI - provides robust communication for industrial networking and device interconnect. |
| Power Management | Three low-power modes (Sleep, Deep-sleep, Deep power-down) with RTC- and GPIO-based wake-up - reduces average system power in battery-backed or energy-constrained applications. |
| Package | LQFP48 (7 × 7 × 1.4 mm, SOT313-2) with 39 GPIO pins - offers compact footprint and sufficient I/O for mid-complexity control tasks in space-constrained designs. |
| Security & Reliability | IEC-60335 Class B certified Windowed Watchdog Timer and brownout detection with three thresholds - ensures fail-safe operation in safety-critical white goods and alarm systems. |
Pinout & Package
LQFP48 package (SOT313-2), 7 mm × 7 mm body, 1.4 mm height, 48 leads. Pin functions are configurable via IOCON registers; primary debug, reset, and peripheral signals are multiplexed on GPIOs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET/PIO0_13 | Reset input / General-purpose I/O | Active-low external reset; default pull-up enabled - requires external pull-up for Deep power-down mode recovery. |
| SWDIO/PIO0_25 & SWCLK/PIO0_26 | Serial Wire Debug interface | Standard 2-pin debug interface supporting programming and real-time debugging without JTAG overhead. |
| XTALIN/XTALOUT | Crytal oscillator connection | Supports 1–25 MHz external crystal - provides stable, low-jitter system clock source for timing-critical peripherals. |
| VDD(3V3) & VSS | Core power supply | 3.3 V supply for internal regulator and ADC reference - decoupling required per layout guidelines to ensure ADC accuracy and digital stability. |
| PIO0_19 to PIO0_24, ACMP0_Ix/ACMP1_Ix | Analog comparator inputs | Eight dedicated analog input pins across two comparators - enables multi-threshold monitoring of sensor outputs or power rails. |
| PIO0_27/ACMP0_O & PIO0_28/ACMP1_O | Analog comparator outputs | Open-drain outputs configurable to drive timer match signals or emulate 555 timer functionality - eliminates need for external discrete comparators in timing circuits. |
Key Features
| Feature | Design Value |
|---|---|
| ROM-based integer division | 32-bit divide routines deliver several times higher arithmetic throughput than software libraries, reducing flash usage and improving deterministic cycle time. |
| Small flash page size | 512-byte erase granularity enables efficient in-field firmware updates and reliable EEPROM emulation with minimal RAM buffering. |
| I²C Fast-mode Plus | 1 Mbit/s data rate with multiple address recognition and programmable glitch filter - supports high-speed sensor bus communication in noisy industrial environments. |
| Programmable GPIO drive | All 39 GPIOs support configurable pull-up, open-drain mode, digital input glitch filtering, and input inversion - simplifies interface design with diverse external logic and sensors. |
| High-current output drivers | Four GPIO pins (PIO0_12, PIO0_27, PIO0_28, PIO0_29) support enhanced current drive - directly drives LEDs, relays, or small solenoids without external buffers. |
Applications
| eMetering | Lighting Control |
|---|---|
Use Scenario: Residential and commercial electricity meters requiring real-time voltage/current sampling, tariff calculation, and secure local data storage. IC Role / Device Role / Timing Role: Main system controller executing metrology algorithms, managing SPI-connected ADCs and RTC-stamped logging, and handling UART/RS-485 communication with utility head-end systems. Use Value: 10-bit ADC with 8 channels and deterministic ROM division enable accurate, low-latency energy computation; IEC-60335 WWDT ensures safe shutdown during firmware corruption. | Use Scenario: Smart LED lighting systems with dimming, color tuning, and occupancy sensing in commercial buildings. IC Role / Device Role / Timing Role: Central lighting node coordinating DALI or 0–10 V analog dimming outputs, reading PIR and ambient light sensors, and communicating via UART or I²C to gateway controllers. Use Value: 39 GPIOs accommodate multiple sensor inputs and driver outputs; programmable input filters suppress EMI from switching power supplies; high-current GPIOs drive indicator LEDs directly. |
| Industrial Networking | Alarm Systems |
Use Scenario: Fieldbus interface modules (e.g., Modbus RTU gateways) connecting legacy PLCs to Ethernet/IP or cloud platforms. IC Role / Device Role / Timing Role: Protocol translation engine managing UART-to-SPI bridging, CRC validation, and real-time packet scheduling using hardware timers and DMA. Use Value: Dual UARTs with fractional baud rate generation and FIFOs support simultaneous RS-485 and RS-232 links; CRC engine offloads checksum computation from CPU. | Use Scenario: Intrusion detection panels with door/window contact monitoring, siren control, and tamper-proof communication to central monitoring stations. IC Role / Device Role / Timing Role: Security controller handling GPIO-based zone inputs, driving piezo sirens or relay outputs, and maintaining secure UART or I²C communication with keypad or sensor hubs. Use Value: Windowed Watchdog Timer prevents silent lockup during fault conditions; brownout detection with forced reset ensures reliable restart after power dips; unique serial number enables device-level authentication. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC1115JBD48/301 | ARM Cortex-M0 core, 32 kB flash, 8 kB SRAM, no analog comparators, lower peripheral count (single UART, no SSP). | Suitable for simpler control tasks without analog threshold monitoring or dual-serial interfacing. | Select when cost sensitivity outweighs need for comparators, extra UART, or larger flash. |
| LPC1224FBD48/101 | Same package and core, but 32 kB flash and 4 kB SRAM - reduced memory capacity and no ROM-based division library. | Targeted at basic firmware implementations where in-field update flexibility and deterministic math are not required. | Choose only if application fits within 32 kB flash and does not rely on high-performance integer division or EEPROM emulation. |
Compared with LPC1115JBD48/301 and LPC1224FBD48/101, the LPC1225FBD48/301 provides greater analog integration, larger memory, and certified watchdog functionality - making it optimal for safety-aware, sensor-rich industrial endpoints where reliability and feature density are prioritized over minimal BOM cost.
Availability
LPC1225FBD48/301 is available at Aetrix Electronics and suitable for eMetering, lighting control, and industrial networking applications requiring stable component supply, long-term manufacturability, and consistent electrical 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 leader specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in ARM-based microcontrollers and mixed-signal integration.
The LPC122x product line was designed specifically for cost-sensitive, reliability-critical industrial control applications - emphasizing low-power operation, functional safety certification (IEC-60335), and field-upgradable firmware architecture.
FAQ
What is the maximum operating frequency of the LPC1225FBD48/301?
The LPC1225FBD48/301 operates at a maximum CPU frequency of 45 MHz when configured with one wait state from flash memory. At zero wait states, the maximum frequency is 30 MHz. This specification is validated in the official NXP datasheet Rev. 2 (26 August 2011) and confirmed by CoreMark benchmarking at 1.51 points per MHz.
Does the LPC1225FBD48/301 support in-system programming (ISP)?
Yes, the LPC1225FBD48/301 supports In-System Programming (ISP) and In-Application Programming (IAP) via its on-chip bootloader, enabling firmware updates over UART, I²C, or USB (with external transceiver). This capability is integral to the LPC1225FBD48/301's design for field-deployed industrial devices requiring remote maintenance.
How many GPIO pins are available on the LPC1225FBD48/301 in its LQFP48 package?
The LPC1225FBD48/301 provides 39 General Purpose I/O pins in its 48-pin LQFP package. These include dedicated analog comparator inputs/outputs, UART, I²C, and SPI signals - all configurable via IOCON registers. This count is explicitly documented in Table 2 of the NXP LPC122x datasheet for the LPC1225FBD48/301 variant.
Is the LPC1225FBD48/301 certified for functional safety standards?
Yes, the Windowed Watchdog Timer (WWDT) in the LPC1225FBD48/301 is certified to IEC-60335 Class B requirements, validating its suitability for safety-critical household and industrial appliances. This certification applies directly to the LPC1225FBD48/301 and is stated in the "Digital peripherals" section of the official datasheet.
What analog peripherals are integrated into the LPC1225FBD48/301?
The LPC1225FBD48/301 integrates a 10-bit 8-channel ADC and two highly flexible analog comparators. Each comparator supports programmable output routing to timer match signals or 555 timer emulation. These analog resources are fully specified for the LPC1225FBD48/301 in the "Analog peripherals" section of the NXP datasheet.
LPC1225FBD48/301,1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 48-LQFP
- Series:
- LPC1200
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- 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
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LPC1225FBD48/301,1 FAQ
1.How can I place an order for LPC1225FBD48/301,1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC1225FBD48/301,1 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 LPC1225FBD48/301,1 reliable?
The price and inventory of LPC1225FBD48/301,1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC1225FBD48/301,1 is usually 5 days.
3.What payment methods are accepted for LPC1225FBD48/301,1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC1225FBD48/301,1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC1225FBD48/301,1?
LPC1225FBD48/301,1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC1225FBD48/301,1 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 LPC1225FBD48/301,1?
For technical support, including LPC1225FBD48/301,1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC1225FBD48/301,1 requirements.
6.How does Aetrix verify that LPC1225FBD48/301,1 is sourced from the original manufacturer or authorized distributors?
All LPC1225FBD48/301,1 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 LPC1225FBD48/301,1 meets industry standards.
7.What is the process for return or replacement of LPC1225FBD48/301,1?
All LPC1225FBD48/301,1 units undergo pre-shipment inspection (PSI). If there is an issue with LPC1225FBD48/301,1, 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 LPC1225FBD48/301,1 part is unused and in its original packaging.
Return procedure for LPC1225FBD48/301,1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LPC1225FBD48/301,1 Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
