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NXP Semiconductors LPC1857FET256,551
- Part No.:
- LPC1857FET256,551
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 256-LBGA
- Datasheet:
-
LPC1857FET256,551.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 256LBGA
- Quantity:
- Payment:
- Shipping:
Inventory:7,441
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Product details
Overview
LPC1857FET256 from NXP Semiconductors is a 32-bit ARM Cortex-M3 microcontroller operating at up to 180 MHz, featuring 1 MB dual-bank flash, 136 kB SRAM, and integrated Ethernet MAC, dual High-speed USB (Host/Device/OTG + Host/Device), LCD controller, and external memory controller. It targets industrial control and e-metering systems requiring deterministic real-time performance and multi-interface connectivity.
For engineers reviewing the LPC1857FET256 datasheet, LPC1857FET256 pinout, LPC1857FET256 application, or LPC1857FET256 equivalent, key selection considerations include its LBGA256 package, -40 °C to +85 °C temperature grade (F suffix), dual USB PHY support, Ethernet IEEE 1588 time stamping, and 164 GPIO with configurable interrupt grouping.
Technical Context
The LPC1857FET256 implements an ARM Cortex-M3 r2p1 core with Harvard architecture, 3-stage pipeline, and integrated Memory Protection Unit (MPU) supporting eight regions. Its clock system includes three PLLs - one for CPU up to 180 MHz, one dedicated to High-speed USB0, and a third for audio applications.
Digital peripheral integration centers on the State-Configurable Timer/PWM (SCTimer/PWM) subsystem and Global Input Multiplexer Array (GIMA), enabling flexible event routing between timers, ADCs, and communication interfaces. The device supports concurrent high-bandwidth peripherals including 10/100T Ethernet with RMII/MII, Quad SPI Flash Interface (SPIFI) at up to 52 MB/s, and two I2S interfaces with DMA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3 r2p1, 180 MHz max - enables deterministic real-time execution with low-latency interrupt handling and MPU-based memory isolation. |
| Memory | 1 MB dual-bank flash (512 kB per bank) + 136 kB SRAM + 16 kB EEPROM - supports safe firmware updates via bank switching and non-volatile parameter storage. |
| Connectivity | 10/100T Ethernet MAC with IEEE 1588 v2 timestamping + dual High-speed USB 2.0 (USB0 with on-chip HS PHY, USB1 with ULPI interface) - enables time-critical industrial networking and dual-role device connectivity. |
| Analog Peripherals | Two 10-bit ADCs (400 kSamples/s, 8 total channels) + one 10-bit DAC (400 kSamples/s) - suitable for sensor acquisition and analog output control in closed-loop systems. |
| Digital Interfaces | SPIFI (1-/2-/4-bit, up to 52 MB/s), two SSPs, four UARTs/USARTs (one with IrDA, one with modem interface), two C_CAN 2.0B controllers - provides flexible legacy and industrial bus interfacing. |
| Power & Packaging | Single 3.3 V supply (2.4–3.6 V), -40 °C to +85 °C operation, LBGA256 (17 × 17 × 1 mm) - suited for space-constrained industrial environments with wide ambient temperature requirements. |
Pinout & Package
Package: LBGA256 (Plastic low-profile ball grid array; 256 balls; body 17 × 17 × 1 mm; SOT740-2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P0_0 | GPIO0[0] / SSP1_MISO / ENET_RXD1 / I2S0_TX_WS | Multi-function digital I/O supporting Ethernet receive, synchronous serial slave input, and I2S word select - enables shared pin usage across high-speed interfaces. |
| P1_15 | GPIO0[2] / U2_TXD / ENET_RXD0 / T0_MAT1 | Combines UART2 transmit, Ethernet receive data line 0, and timer match output - allows time-synchronized communication and signal generation on same pin. |
| P1_19 | ENET_TX_CLK / SSP1_SCK / CLKOUT / I2S0_RX_MCLK | Shared clock terminal for Ethernet transmit timing, synchronous serial clocking, system clock output, and I2S master clock - simplifies clock tree design in multi-peripheral systems. |
| P2_0 | U0_TXD / EMC_A13 / USB0_PPWR / GPIO5[0] | Supports ISP programming, external memory addressing, USB VBUS drive control, and general-purpose I/O - critical for boot configuration and power management during USB host operation. |
| P1_5 | GPIO1[8] / CTOUT_10 / EMC_CS0 / USB0_PWR_FAULT | Enables SCTimer PWM output, external memory chip select, and USB overcurrent monitoring - integrates control, memory access, and fault detection in compact designs. |
Key Features
| Feature | Design Value |
|---|---|
| Dual High-speed USB | USB0 with integrated HS PHY + USB1 with ULPI interface enables simultaneous OTG and host functionality without external transceivers, reducing BOM cost and PCB area. |
| IEEE 1588 Ethernet | Hardware-accelerated time stamping (v2) supports sub-microsecond synchronization in industrial automation and power metering networks. |
| State-Configurable Timer | SCTimer/PWM subsystem allows runtime reconfiguration of timer states and event-triggered actions - ideal for adaptive motor control and complex waveform generation. |
| External Memory Controller | EMC supports SRAM, NOR flash, and SDRAM with configurable wait states and burst modes - enables expansion beyond on-chip memory for HMI or data logging applications. |
| Quad SPI Flash Interface | SPIFI operates at up to 52 MB/s in 4-bit mode, eliminating need for parallel NOR flash and simplifying boot code storage and firmware updates. |
Applications
| Industrial PLC Controller | e-Metering Gateway |
|---|---|
Use Scenario: Compact programmable logic controller managing I/O modules, fieldbus communication, and local HMI. IC Role / Device Role / Timing Role: Main application processor executing control logic, coordinating Ethernet/IP and CAN traffic, and driving LCD display. Use Value: Dual USB ports enable field technician firmware updates and diagnostics; EMC supports external data logger memory; SCTimer handles precise pulse-width modulation for valve actuation. |
Use Scenario: Smart electricity meter gateway aggregating data from multiple meters and transmitting via Ethernet or cellular backhaul. IC Role / Device Role / Timing Role: Central communications hub with IEEE 1588 time sync for phase-aligned sampling and secure data aggregation. Use Value: Hardware timestamping ensures synchronized meter readings across distributed nodes; 1 MB flash stores encryption keys and firmware; dual USB supports secure provisioning and maintenance. |
| RFID Reader System | White Goods Control Panel |
Use Scenario: Multi-protocol RFID reader supporting ISO14443, ISO15693, and EPC Gen2 tags in access control or logistics terminals. IC Role / Device Role / Timing Role: Baseband processor managing RF front-end timing, tag protocol stack, and host interface bridging. Use Value: GIMA enables dynamic routing of ADC samples and timer events for antenna tuning; 164 GPIO support matrix keypad and LED indicators; SPIFI accelerates firmware field upgrades. |
Use Scenario: Front-panel controller for washing machines or dishwashers managing user interface, motor sequencing, and sensor feedback. IC Role / Device Role / Timing Role: Real-time coordinator of touch UI, motor control PWM, temperature sensing, and appliance status reporting. Use Value: Motor control PWM and QEI support precise brushless motor commutation; RTC with battery backup maintains cycle timing during power loss; 10-bit ADCs monitor thermistor and current sense inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LPC1857JET256 | Identical silicon, but rated for -40 °C to +105 °C (J grade) vs. F grade (-40 °C to +85 °C) | Required for extended-temperature industrial or automotive under-hood applications | Select JET256 when operating ambient exceeds 85 °C or long-term reliability at high junction temperature is critical. |
| LPC4357FET256 | Dual-core: ARM Cortex-M4F + Cortex-M0 co-processor; adds floating-point unit and enhanced DSP instructions; same peripheral set and pinout | Needed for computationally intensive tasks like FFT-based power quality analysis or real-time audio processing | Choose LPC4357FET256 when application requires floating-point math acceleration or asymmetric dual-core task partitioning. |
Compared with LPC1857FET256, the LPC1857JET256 offers higher thermal margin without functional change, while the LPC4357FET256 delivers measurable computational uplift via M4F+FPU - making it preferable for signal-intensive edge analytics where the LPC1857FET256's M3 core reaches throughput limits.
Availability
LPC1857FET256 is available at Aetrix Electronics and suitable for industrial control, e-metering, and white goods applications requiring stable component supply, long lifecycle support, and consistent manufacturing traceability.
Supply support for LPC1857FET256 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 edge processing.
The LPC18xx series was designed for high-performance embedded applications demanding rich peripheral integration, real-time determinism, and industrial-grade reliability - particularly where Ethernet, USB, and LCD interfaces converge in resource-constrained environments.
FAQ
What is the maximum operating frequency of the LPC1857FET256?
The LPC1857FET256 operates at a maximum CPU frequency of 180 MHz, achieved using its dedicated CPU PLL. This frequency is supported across the full industrial temperature range (-40 °C to +85 °C) and enables high-throughput execution of real-time control algorithms and protocol stacks. The LPC1857FET256 maintains this performance without requiring external high-frequency crystals due to its internal PLL architecture.
Does the LPC1857FET256 support IEEE 1588 Precision Time Protocol?
Yes, the LPC1857FET256 includes hardware-accelerated IEEE 1588-2008 v2 time stamping within its Ethernet MAC. This allows sub-microsecond timestamp accuracy on both transmit and receive frames, essential for synchronized measurement in smart grid and industrial automation. The feature is enabled without CPU overhead and is fully supported in the NXP-provided Ethernet driver stack for LPC1857FET256.
How many USB interfaces does the LPC1857FET256 integrate, and what are their capabilities?
The LPC1857FET256 integrates two independent High-speed USB 2.0 interfaces: USB0 supports Host/Device/OTG modes with an on-chip high-speed PHY, while USB1 supports Host/Device modes with an on-chip full-speed PHY and ULPI interface for connection to an external high-speed PHY. Both interfaces include DMA support, enabling efficient data transfer with minimal CPU load in LPC1857FET256-based designs.
What memory resources are available on the LPC1857FET256?
The LPC1857FET256 provides 1 MB of on-chip dual-bank flash memory (512 kB per bank), 136 kB of SRAM, 16 kB of EEPROM, 64 kB of ROM containing boot code and drivers, and 64-bit + 256-bit OTP memory. The dual-bank flash enables safe over-the-air firmware updates by allowing background writes to one bank while executing from the other - a key capability implemented directly in the LPC1857FET256 silicon.
Is the LPC1857FET256 pin-compatible with other members of the LPC18xx family?
Yes, the LPC1857FET256 in LBGA256 package shares identical pinout with other LPC18xx variants in the same package, including LPC1853FET256, LPC1837FET256, and LPC1833FET256. This allows direct substitution in designs where flash size, peripheral enablement (e.g., LCD), or temperature grade differ - provided software configures only the features present in the target variant. Pin compatibility is confirmed in NXP's official LPC185X_3X_2X_1X datasheet for LPC1857FET256.
LPC1857FET256,551 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 256-LBGA
- Series:
- LPC18xx
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 180MHz
- Connectivity:
- CANbus, EBI/EMI, Ethernet, I2C, IrDA, Microwire, QEI, SD, SPI, SSI, SSP, UART/USART, USB, USB OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, LCD, Motor Control PWM, POR, PWM, WDT
- Number of I/O:
- 164
- Program Memory Size:
- 1MB (1M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 16K x 8
- RAM Size:
- 136K x 8
- Voltage - Supply (Vcc/Vdd):
- 2.2V ~ 3.6V
- Data Converters:
- A/D 8x10b; D/A 1x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LPC1857FET256,551 FAQ
1.How can I place an order for LPC1857FET256,551 through Aetrix?
Please submit a Request for Quotation (RFQ) for LPC1857FET256,551 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 LPC1857FET256,551 reliable?
The price and inventory of LPC1857FET256,551 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LPC1857FET256,551 is usually 5 days.
3.What payment methods are accepted for LPC1857FET256,551?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LPC1857FET256,551 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LPC1857FET256,551?
LPC1857FET256,551 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LPC1857FET256,551 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 LPC1857FET256,551?
For technical support, including LPC1857FET256,551 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LPC1857FET256,551 requirements.
6.How does Aetrix verify that LPC1857FET256,551 is sourced from the original manufacturer or authorized distributors?
All LPC1857FET256,551 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 LPC1857FET256,551 meets industry standards.
7.What is the process for return or replacement of LPC1857FET256,551?
All LPC1857FET256,551 units undergo pre-shipment inspection (PSI). If there is an issue with LPC1857FET256,551, 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 LPC1857FET256,551 part is unused and in its original packaging.
Return procedure for LPC1857FET256,551:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LPC1857FET256,551 Tags
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