LPC11E68JBD48K - 50MHz Cortex-M0+ 256KB MCU | NXP
MPN： LPC11E68JBD48K ✓ 啟用中LPC11E68JBD48K 概覽
A microcontroller is a semiconductor device that integrates a CPU core, program memory, data memory, peripherals, and interface controllers on one package. The LPC11E68 belongs to the LPC11Exx family, a low-cost 32-bit MCU platform intended to replace conventional 8-bit and 16-bit designs while providing higher processing performance, efficient code density, and broader peripheral integration.
Key device characteristics include a 50 MHz ARM Cortex-M0+ core, 256 KB of flash for firmware, 36 KB of SRAM for working data, and a 48-LQFP package. The 2.4 V to 3.6 V operating range supports common embedded supply rails, while the compact 7 x 7 mm package supports space-constrained control boards. The LPC11Exx family also targets low-power operation and energy-efficient processing for embedded-control applications.
The LPC11Exx architecture uses the ARM Cortex-M0+ instruction set, which provides deterministic 32-bit processing while maintaining code density appropriate for small embedded systems. Its combination of flash, SRAM, serial interfaces, timers, and GPIO allows one device to consolidate functions that might otherwise require several discrete controllers. The LPC11U68 member of the family adds configurable USB connectivity, making it especially relevant when USB connectivity is required.
Typical uses include industrial control modules, sensor hubs, building automation controllers, compact instrumentation, appliance controls, and connected low-power peripherals. The 256 KB flash capacity accommodates more complex control firmware and protocol stacks than many entry-level 8-bit controllers, while 36 KB of SRAM provides working space for buffering, state management, and communication routines.
Designers should treat the 2.4 V to 3.6 V supply range as the primary electrical boundary and verify every external signal and peripheral setting against the NXP datasheet. PCB layout should provide a stable ground reference, decouple the supply pins near the device, and preserve the package footprint and exposed thermal-pad requirements defined for the selected ordering configuration.
This page combines the LPC11E68JBD48K family positioning, exact-ordering details, interface guidance, engineering trade-offs, and verified sourcing information to support faster component selection and PCB design. It also highlights the LPC11U68JBD48K as the closest USB-equipped family comparison for designs that require that connectivity.
直接替換替代品，適用於 LPC11E68JBD48K — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LPC11E68JBD48K （相同外形與佔位） — 差異在於 Package, Product Type.
LPC11U68JBD48K
✅ 直接替換聯絡詢價
查看資料表 →LPC11E68JBD48
✅ 直接替換📋 參考替代品（不在目錄中）
LPC11E68JBD48K 最大額定值與電氣特性
| Product Type | 32-bit ARM Cortex-M0+ microcontroller |
| Maximum CPU Frequency | 50 MHz |
| Flash Memory | 256 KB |
| Flash Organization | 256K x 8 bits |
| SRAM | 36 KB |
| Core Architecture | ARM Cortex-M0+ |
| Architecture Width | 32 bit |
| Supply Voltage Range | 2.4 V to 3.6 V |
| 封裝 | 48-LQFP (7 x 7 mm) |
| 腳位數 | 48 pins |
| 安裝類型 | Surface mount |
| Temperature Grade | Industrial |
| Family | LPC11Exx |
| Core Count | Single core |
| Terminal Form | Gull wing |
| Package Shape | Square |
| Package Code | LFQFP |
| RoHS 狀態 | Compliant |
LPC11E68JBD48K lfqfp 腳位配置指南
LPC11E68JBD48K（lfqfp 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： LPC11E68JBD48K.
請參閱 資料表 以查看完整腳位配置。
典型應用
LPC11E68JBD48K 適用於 6 應用s: Industrial Control Module, Building Automation Controller, Sensor and Measurement Hub, Appliance Control, Low-Power Connected Peripheral, USB-Capable Data Controller.
Industrial Control Module
The LPC11E68JBD48K fits compact industrial control modules that coordinate sensors, actuators, status indicators, and service interfaces. Its 50 MHz ARM Cortex-M0+ core provides deterministic 32-bit processing, while 256 KB flash accommodates control algorithms, parameter tables, and communication routines. The 36 KB SRAM supports state retention, acquisition buffers, and protocol parsing without forcing the design into a larger memory footprint. Operating from 2.4 V to 3.6 V, the device accommodates standard embedded supply rails, although the final module must account for industrial transients and grounding requirements. Its 48-LQFP 7 x 7 mm package provides a practical pin count for mixed digital and analog control functions while keeping the controller away from the smallest package limit.
推薦
Building Automation Controller
The LPC11E68JBD48K is appropriate for building-automation nodes that supervise lighting, HVAC interfaces, occupancy sensors, and networked building equipment. Its 256 KB flash provides room for protocol handlers, configuration data, and firmware updates, while the 36 KB SRAM supports message queues and temporary sensor data. The 50 MHz Cortex-M0+ core can manage multiple interrupt-driven peripheral tasks without the overhead of a more complex processor. The 2.4 V to 3.6 V operating range fits controller boards powered from regulated low-voltage rails. Designers should allocate careful PCB partitioning between communications, external relays, and sensor inputs to keep switching transients away from the MCU and maintain a low-impedance ground path.
推薦
Sensor and Measurement Hub
The LPC11E68JBD48K can serve as the central controller for a compact sensor hub that gathers readings, applies calibration, and forwards status to other equipment. Its 36 KB SRAM is useful for buffering samples and maintaining sensor state, while 256 KB flash can store calibration coefficients and configuration logic. The 50 MHz Cortex-M0+ performance allows interrupt-driven acquisition and serial communication to coexist in a small 7 x 7 mm footprint. The 2.4 V to 3.6 V supply range allows operation from common regulated sources, but analog sensor conditioning and reference components must be designed separately. Keep high-impedance sensor traces away from digital return paths and place supply bypass capacitors at the MCU pins to reduce measurement disturbance.
推薦
Appliance Control
The LPC11E68JBD48K is well suited to appliance controllers that must coordinate user inputs, displays, motors, heaters, or communication interfaces. The 256 KB flash supports feature-rich firmware and lookup data, and the 36 KB SRAM is sufficient for runtime state, timing, and peripheral buffers. A 50 MHz Cortex-M0+ core offers responsive task scheduling in a compact 48-LQFP package. Its 2.4 V to 3.6 V operating range simplifies use with regulated control rails. In practical products, keep mains-connected or high-energy switching circuits physically separated from the MCU area, provide robust return paths for motor and heater current, and validate the controller across the complete temperature and supply range required by the appliance.
推薦
Low-Power Connected Peripheral
The LPC11E68JBD48K can support low-power connected peripherals that periodically acquire information and communicate through serial interfaces. Its 36 KB SRAM allows meaningful data buffering during brief wake periods, while 256 KB flash provides nonvolatile storage for firmware and configuration. The Cortex-M0+ core reaches 50 MHz when processing demands are high and can return to a low-power state between tasks. The 2.4 V to 3.6 V range supports common embedded power systems. For battery-operated designs, calculate average current from the actual duty cycle and the datasheet operating modes rather than the maximum clock rate. Stable local bypass capacitance and controlled clock and peripheral states are essential for predictable energy consumption.
推薦
USB-Capable Data Controller
The LPC11U68JBD48K is the relevant comparison when a control product must include a USB interface rather than relying only on embedded serial links. It retains the 50 MHz Cortex-M0+ core, 256 KB flash, 36 KB SRAM, and 48-LQFP format associated with the LPC11E68JBD48K platform while adding configurable USB connectivity. This combination supports compact adapters, configuration tools, and service interfaces where a dedicated USB controller would otherwise increase board complexity. The same 2.4 V to 3.6 V supply range supports common embedded rails. Firmware, USB clocking, transceiver requirements, and software configuration must be reviewed against the LPC11U family documentation before replacing the non-USB LPC11E68JBD48K.
推薦
推薦產品摘要
工程參考資料，適用於 LPC11E68JBD48K — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | LPC11U68JBD48K | LPC11E68JBD48 |
|---|---|---|---|
| Package | 48-LQFP (7 x 7 mm) | 48-LQFP (7 x 7 mm) | 48-LQFP (7 x 7 mm) |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| CPU Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ |
| Maximum CPU Frequency | 50 MHz | 50 MHz | 50 MHz |
| Flash Memory | 256 KB | 256 KB | 256 KB |
| SRAM | 36 KB | 36 KB | 36 KB |
| Supply Voltage Range | 2.4 V to 3.6 V | 2.4 V to 3.6 V | 2.4 V to 3.6 V |
| USB Connectivity | No configurable USB interface | Configurable USB interface | No configurable USB interface |
| Architecture Width | 32 bit | 32 bit | 32 bit |
| Core Count | Single core | Single core | Single core |
主要差異化特點
- Compact 32-bit control with substantial embedded memory (對比LPC11E68JBD48)
- No USB requirement for conventional embedded-control designs (對比LPC11U68JBD48K)
- Low-voltage operation in a compact industrial footprint (對比LPC11U68JBD48K)
設計說明
Design the supply network for the documented 2.4 V to 3.6 V operating range and place the required bypass capacitors close to the MCU supply pins. Keep the high-current return path away from sensitive analog and communication inputs. If the board also contains relays, motor drivers, or USB circuitry, separate their switching currents from the MCU ground region and confirm the voltage at the pins under the maximum system load.
Use the manufacturer package drawing for the 48-LQFP 7 x 7 mm footprint rather than relying on a generic 48-pin library symbol. Verify pin-1 orientation, pad dimensions, solder-mask clearance, and paste volume during PCB review. Preserve short ground-return paths and arrange decoupling, clock, and debug-access nets to minimize loop area and make programming and boundary-scan access predictable during production.
Do not substitute LPC11U68JBD48K without reviewing the added USB peripheral, clock configuration, and software initialization. Although the core, memory sizes, and package support drop-in consideration, USB changes the electrical and firmware requirements of the product. Similarly, confirm whether the base LPC11E68JBD48 ordering designation has the required packing option before approving it for production procurement.
Size firmware and RAM allocation against the actual 256 KB flash and 36 KB SRAM limits, leaving margin for boot code, configuration data, stack growth, and future updates. Avoid assuming that memory capacity alone guarantees peripheral suitability. Check each required serial interface, timer, GPIO count, analog function, and communication standard against the exact LPC11E68 datasheet before committing the board layout.
合規資訊
The LPC11E68JBD48K listing identifies RoHS compliance. Other environmental, automotive, lead-free, halogen-free, and conflict-minerals declarations require confirmation from the manufacturer.