My Inquiry
My Account
NXP Semiconductors LPC1224FBD48/121,1
- Part No.:
- LPC1224FBD48/121,1
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
LPC1224FBD48/121,1.pdf
- Description:
- IC MCU 32BIT 48KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:6,085
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LPC1224FBD48/121 from NXP Semiconductors is a 32-bit ARM Cortex-M0 microcontroller targeting industrial automation and embedded control, operating at up to 45 MHz with 48 kB flash, 4 kB SRAM, 10-bit ADC (8 channels), two analog comparators, dual UARTs, I²C-Fast-mode Plus (1 Mbit/s), SSP/SPI, and 39 GPIO pins in LQFP48 package.
For engineers reviewing the LPC1224FBD48/121 datasheet, LPC1224FBD48/121 pinout, LPC1224FBD48/121 application, or LPC1224FBD48/121 equivalent, key selection criteria include its 48-pin LQFP footprint, deterministic 32-bit integer division via ROM library, IEC-60335 Class B-certified Windowed Watchdog Timer, and support for in-field programming via ISP/IAP with 512-byte flash page erase.
Technical Context
The LPC1224FBD48/121 implements the ARM Cortex-M0 core with Nested Vectored Interrupt Controller (NVIC) and Serial Wire Debug (SWD), achieving 1.51 CoreMark/MHz performance. Its clock system integrates 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 programmable GPIO with edge/level-sensitive interrupt capability on all 39 pins. Analog functions are limited to one 10-bit ADC and two comparators with output feedback loop and 555-timer emulation capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M0, 45 MHz max operation with one wait state from flash; enables high code density and low-power deterministic execution. |
| Memory | 48 kB on-chip flash (512-byte page erase) and 4 kB SRAM; supports in-system and in-application programming with minimal RAM buffer overhead. |
| Analog Peripherals | 8-channel 10-bit ADC and two analog comparators with programmable outputs; enables sensor interface and threshold-based control without external components. |
| Digital Interfaces | Dual UARTs (one with RS-485/modem support), I²C-Fast-mode Plus (1 Mbit/s), SSP/SPI; provides robust serial communication for industrial networking and metering. |
| GPIO & Timers | 39 configurable GPIO pins with programmable pull-up, open-drain, glitch filter, and interrupt capability; four general-purpose timers (32-/16-bit) with capture/match functionality for precise timing control. |
| Power Management | Three low-power modes (Sleep, Deep-sleep, Deep power-down); wake-up from Deep-sleep via 12 port pins and from Deep power-down via RTC; brownout detection with three thresholds. |
| Package | LQFP48, 7 × 7 × 1.4 mm body (SOT313-2); compatible with standard surface-mount assembly and offers compact footprint for space-constrained industrial PCBs. |
Pinout & Package
LQFP48 package (SOT313-2), 7 × 7 × 1.4 mm body, 48 leads, lead pitch 0.5 mm. Pin functions are multiplexed and configured via IOCON registers; default reset states and electrical characteristics (e.g., 3.3 V tolerance, internal pull-up) are defined per pin in the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| XTALIN / XTALOUT | Crystal oscillator input/output | Supports 1–25 MHz external crystal; enables precise system clock with low jitter for timing-critical applications like metering. |
| RESET/PIO0_13 | Reset input / GPIO | Active-low external reset; requires external pull-up for Deep power-down mode recovery; doubles as general-purpose I/O after reset. |
| SWDIO / SWCLK | Serial Wire Debug interface | Two-pin debug interface (pins 10 & 11) enabling non-intrusive firmware development, real-time tracing, and field updates without dedicated JTAG header. |
| PIO0_10 / PIO0_11 | I²C-bus SCL / SDA | 5 V tolerant, open-drain I²C pins supporting Fast-mode Plus (1 Mbit/s); allow direct connection to legacy 5 V sensors and bus expanders. |
| PIO0_14–PIO0_17 | SSP/SPI SCK / SSEL / MISO / MOSI | Full-duplex synchronous serial interface with FIFO; supports SPI master/slave, TI SSI, and Microwire protocols for display drivers and flash memory. |
| PIO0_19–PIO0_24 | Comparator inputs (ACMP0_I0–ACMP1_I1) | Four dedicated analog comparator inputs per comparator; enable voltage monitoring, zero-crossing detection, and hardware-triggered timer events. |
| PIO0_27 / PIO0_28 | ACMP0_O / ACMP1_O | Comparator output pins with high-current drive capability; directly drive LEDs, relays, or trigger interrupts without external buffers. |
| VDD(3V3) / VSS | Core supply / Ground | 3.3 V regulated supply for CPU, peripherals, and ADC reference; separate VDD(IO) allows I/O voltage flexibility while maintaining ADC accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| ROM-based integer division | Hardware-accelerated 32-bit division routines reduce flash usage by ~30 % and improve execution determinism vs. software libraries. |
| IEC-60335 Class B WDT | Windowed Watchdog Timer certified for household appliance safety compliance; prevents runaway code while allowing valid timing windows for firmware updates. |
| 512-byte flash page erase | Enables fine-grained EEPROM emulation and over-the-air firmware updates with minimal RAM buffering (≤512 bytes required). |
| Programmable GPIO glitch filter | Configurable digital input filter (up to 10 system clocks) suppresses noise on industrial control lines without external RC networks. |
| RTC with 32 kHz oscillator | Integrated real-time clock with external 32.768 kHz crystal support (RTCXIN/RTCXOUT pins); maintains timekeeping during Deep-sleep and Deep power-down modes. |
Applications
| eMetering | Lighting Control |
|---|---|
Use Scenario: Smart electricity/water/gas meters requiring secure firmware updates, tamper detection, and long-term battery-backed timekeeping. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing secure boot, and driving LCD/RF modules via UART/I²C. Use Value: 512-byte flash page erase enables safe in-field firmware patching; RTC + Deep power-down extends battery life beyond 10 years. | Use Scenario: LED driver boards and smart lighting nodes needing PWM dimming, thermal monitoring, and DALI/DMX interface support. IC Role / Device Role / Timing Role: System-on-module controller handling analog sensor reads (temperature, ambient light), PWM generation, and serial protocol translation. Use Value: Two analog comparators emulate 555 timers for hardware-based overcurrent protection; 39 GPIO support multi-channel PWM with match/capture synchronization. |
| Industrial Networking | Alarm Systems |
Use Scenario: Fieldbus gateways and sensor aggregators connecting Modbus RTU, CAN, or RS-485 devices to Ethernet/Wi-Fi backbones. IC Role / Device Role / Timing Role: Protocol bridge processor managing UART-to-SPI translation, data buffering, and error-checking via CRC engine. Use Value: Dual UARTs (one with RS-485 support) and micro-DMA enable concurrent serial traffic handling without CPU load; 1.51 CoreMark/MHz ensures real-time response. | Use Scenario: Intrusion detection panels and fire alarm control units requiring fail-safe operation, sensor polling, and audible/visual alert triggering. IC Role / Device Role / Timing Role: Safety-critical supervisor managing door/window contact inputs, smoke detector analog signals, and siren outputs. Use Value: IEC-60335 Class B WDT guarantees automatic reset on fault; brownout detection with three thresholds prevents erratic behavior during brownout conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC1114FHN33/102 | ARM Cortex-M0, 50 MHz, 32 kB flash, 8 kB SRAM, LQFP32; lacks I²C Fast-mode Plus, comparators, and WDT certification. | Suitable for cost-sensitive, lower-peripheral-count designs; not certified for Class B safety-critical systems. | Select when footprint and BOM cost are primary constraints and safety certification is unnecessary. |
| LPC1227FBD48/301 | Same family, LQFP48 package, but with 128 kB flash, 8 kB SRAM, and identical peripheral set including WDT certification and I²C Fast-mode Plus. | Direct upgrade path for applications requiring larger firmware storage or future-proofing; same pinout and software compatibility. | Choose when additional flash headroom is needed for feature-rich firmware or bootloader+application separation. |
Compared with LPC1114FHN33/102, LPC1224FBD48/121 adds safety-certified watchdog, analog comparators, and I²C Fast-mode Plus-critical for industrial metering and alarm systems; versus LPC1227FBD48/301, it trades flash/SRAM capacity for tighter BOM cost while retaining identical peripheral functionality and safety compliance.
Availability
LPC1224FBD48/121 is available at Aetrix Electronics and suitable for eMetering, lighting control, and industrial networking applications requiring stable component supply, long-term lifecycle support, and industrial-grade reliability.
Supply support for LPC1224FBD48/121 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 specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with leadership in ARM-based microcontrollers and RF technologies.
The LPC122x product line was designed for cost-effective, safety-aware industrial control applications-including factory automation, white goods, and utility metering-emphasizing low-power operation, functional safety, and field-upgradable firmware.
FAQ
What is the maximum operating frequency of the LPC1224FBD48/121?
The LPC1224FBD48/121 operates at a maximum CPU frequency of 45 MHz when using flash memory with one wait state. It achieves this speed using the ARM Cortex-M0 core with optimized instruction fetch and ROM-based division routines, delivering 1.51 CoreMark/MHz performance. This frequency is supported by both the internal 12 MHz ±1 % RC oscillator (via PLL) and external crystals up to 25 MHz.
Does the LPC1224FBD48/121 support in-field firmware updates?
Yes, the LPC1224FBD48/121 supports robust in-field firmware updates via In-System Programming (ISP) and In-Application Programming (IAP) using the on-chip bootloader. Its 512-byte flash page erase granularity minimizes RAM buffer requirements and enables safe over-the-air patches without full chip erasure-critical for deployed eMetering and alarm systems where uptime is essential.
What safety certifications apply to the LPC1224FBD48/121?
The LPC1224FBD48/121 includes an IEC-60335 Class B-certified Windowed Watchdog Timer (WWDT), making it suitable for household and industrial appliances requiring functional safety compliance. This certification validates the WWDT's ability to detect and recover from software faults within defined timing windows, a mandatory requirement for UL/EN 60335-1 certification of white goods and alarm systems.
How many analog input channels does the LPC1224FBD48/121 ADC support?
The LPC1224FBD48/121 integrates a single 10-bit successive-approximation ADC with 8 input channels (AD0–AD7), accessible via pins PIO0_30, PIO0_31, PIO1_0–PIO1_5, and PIO1_4. These channels support simultaneous sampling in burst mode and are referenced to the internal 3.3 V supply (VDD(3V3)), enabling direct interface with resistive sensors, thermistors, and voltage dividers in industrial control applications.
Is the LPC1224FBD48/121 pin-compatible with other LPC122x variants in LQFP48?
Yes, the LPC1224FBD48/121 shares identical pinout, package (LQFP48, SOT313-2), and electrical characteristics with all other LPC122x devices in the 48-pin variant-including LPC1225FBD48/301, LPC1226FBD48/301, and LPC1227FBD48/301. This allows direct PCB reuse across the family, with differentiation limited to flash size (32–128 kB), SRAM (4–8 kB), and minor peripheral enablement-enabling scalable design and inventory consolidation.
LPC1224FBD48/121,1 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:
- 48KB (48K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K 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:
LPC1224FBD48/121,1 FAQ
1.How can I place an order for LPC1224FBD48/121,1 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC1224FBD48/121,1 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 LPC1224FBD48/121,1 reliable?
The price and inventory of LPC1224FBD48/121,1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC1224FBD48/121,1 is usually 5 days.
3.What payment methods are accepted for LPC1224FBD48/121,1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC1224FBD48/121,1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC1224FBD48/121,1?
LPC1224FBD48/121,1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC1224FBD48/121,1 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 LPC1224FBD48/121,1?
For technical support, including LPC1224FBD48/121,1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC1224FBD48/121,1 requirements.
6.How does Aetrix verify that LPC1224FBD48/121,1 is sourced from the original manufacturer or authorized distributors?
All LPC1224FBD48/121,1 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 LPC1224FBD48/121,1 meets industry standards.
7.What is the process for return or replacement of LPC1224FBD48/121,1?
All LPC1224FBD48/121,1 units undergo pre-shipment inspection (PSI). If there is an issue with LPC1224FBD48/121,1, 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 LPC1224FBD48/121,1 part is unused and in its original packaging.
Return procedure for LPC1224FBD48/121,1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LPC1224FBD48/121,1 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…
