LPC11E68JBD64E - 50MHz Cortex-M0+ MCU, 256KB Flash | NXP
料号： LPC11E68JBD64E ✓ 量产中LPC11E68JBD64E 概述
An Arm Cortex-M0+ microcontroller is a 32-bit embedded processor built around the Armv6-M instruction set. Compared with an 8- or 16-bit controller, the LPC11Exx architecture provides larger addressing capability and more efficient handling of complex control logic. The LPC11E68JBD64E occupies the microcontroller hierarchy as a general-purpose embedded controller with integrated flash, SRAM, analog conversion, timers, serial interfaces, and communication peripherals. Its 50 MHz operating frequency supports responsive control while retaining a compact, low-power design profile.
The principal device characteristics include up to 50 MHz CPU operation, 256 KB of flash, 36 KB of SRAM, and 4 KB of EEPROM. A 12-bit ADC supports analog measurement, while the family architecture provides communication capabilities suited to embedded control, sensor acquisition, and connected equipment. The LPC11Exx family was created for applications replacing 8- and 16-bit controllers when greater arithmetic capability, peripheral integration, and reduced firmware complexity are valuable without requiring a higher-tier application processor.
The 64-LQFP package provides 64 externally accessible positions and a 10 mm × 10 mm footprint. This relatively large leaded package is suitable for conventional through-hole assembly, prototypes, and designs that benefit from inspectable leads rather than a fine-pitch land pattern. Board layout must preserve access to the ADC inputs, oscillator connections, reset circuitry, programming interface, power rails, decoupling, and all other pins defined in the manufacturer pin-description table.
Typical uses include industrial sensing and control, building automation, appliance control, low-cost instrumentation, portable equipment, and embedded subsystems requiring local analog measurement and serial communications. The combination of 256 KB flash and 36 KB SRAM is useful when application firmware, configuration tables, diagnostics, and communication buffers must coexist without external memory.
A key design consideration is firmware and peripheral planning. Allocate the ADC pins according to analog-channel requirements, follow the recommended decoupling arrangement, and keep sensitive analog traces away from fast switching nodes. Confirm startup, reset, and programming requirements against the manufacturer datasheet before releasing a PCB. Migration between LPC11Exx devices should also account for differences in USB, memory, peripheral, and temperature-grade options rather than relying on package similarity alone.
This page consolidates the confirmed device identity, core memory and timing specifications, package information, sourcing workflow, application context, and verified drop-in alternatives. It also highlights the engineering checks that distinguish a true pin-compatible replacement from a merely similar 64-LQFP microcontroller.
直接替换替代料： LPC11E68JBD64E ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： LPC11E68JBD64E （相同外形与封装尺寸） ——差异在于 CPU Architecture, Flash Memory, Package Type, Product Type.
LPC11U68JBD64E
✅ 直接替换📋 参考替代料（不在目录中）
LPC11E67JBD64E
✅ 直接替换联系询价
查看数据手册 →LPC11E68JBD64K
✅ 直接替换📋 参考替代料（不在目录中）
LPC11E68JBD64E 最大额定值与电气特性
| Product Type | 32-bit embedded microcontroller |
| CPU Core | Arm Cortex-M0+ |
| Maximum CPU Frequency | 50 MHz |
| Program Memory Type | Flash |
| Program Memory Size | 256 KB |
| Program Memory Organization | 256K × 8 bits |
| SRAM Size | 36 KB |
| EEPROM Size | 4 KB |
| ADC Resolution | 12 bits |
| Package Type | 64-LQFP |
| Package Body Size | 10 mm × 10 mm |
| 引脚数 | 64 pins |
| 安装类型 | Surface mount |
| Core Architecture | Armv6-M |
| Product Lifecycle Status | Active |
LPC11E68JBD64E 10 mm × 10 mm 引脚配置指南
LPC11E68JBD64E（10 mm × 10 mm 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： LPC11E68JBD64E.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LPC11E68JBD64E 适用于 6 应用s: Industrial Sensor Conditioning, Building Automation Controller, Appliance Control, Low-Cost Portable Instrument, Communications Hub, Educational Controller Platform.
Industrial Sensor Conditioning
The LPC11E68JBD64E fits sensor-conditioning and supervisory control designs that require local analog measurement without a higher-performance processor. Its 12-bit ADC supports acquisition from resistive, current-based, or voltage-output sensors, while the Arm Cortex-M0+ core can execute filtering, calibration, threshold logic, and communication handling at rates up to 50 MHz. The 256 KB flash stores firmware and parameter tables, and the 36 KB SRAM accommodates working buffers without external memory. A practical design should allocate ADC pins according to the analog channel map, establish a quiet reference and supply arrangement, and calibrate gain and offset against the chosen sensor range. Firmware should also handle open-wire, saturation, and out-of-range conditions rather than relying on raw ADC counts alone.
推荐
Building Automation Controller
The LPC11E68JBD64E is appropriate for building equipment that combines local I/O control, analog sensing, and serial communications. Its 50 MHz Cortex-M0+ core provides enough performance for scheduling, state-machine logic, diagnostics, and protocol handling, while 256 KB flash and 36 KB SRAM support embedded application code and communication buffers. A controller for HVAC actuators, lighting interfaces, occupancy sensors, or environmental monitors can use the 12-bit ADC for input sensing and the LPC11Exx peripheral set for external communication. Design the board with accessible test points, robust connector protection, and separate return paths for analog and switching signals. Firmware should include boot validation and peripheral health checks so a failed sensor or bus does not prevent the controller from restarting safely.
推荐
Appliance Control
The LPC11E68JBD64E can serve as the primary controller in appliances where a deterministic embedded system must coordinate switches, sensors, displays, and motors. Its Arm Cortex-M0+ architecture offers efficient 32-bit control at up to 50 MHz, while the 256 KB flash and 36 KB SRAM are useful for state machines, diagnostic logs, and protocol stacks. The 12-bit ADC supports temperature, pressure, or level measurement when the application requires analog observation. For motor or relay outputs, keep high-current switching paths physically separated from the MCU and analog ground references, and use appropriate protection components. Firmware should define safe-state behavior for invalid sensor readings, communication loss, and startup faults. A 64-LQFP package also provides inspectable leads, which can simplify prototype rework compared with a very fine-pitch land pattern.
推荐
Low-Cost Portable Instrument
The LPC11E68JBD64E suits compact battery-powered instruments that combine signal acquisition, local computation, and a serial data interface. Its low-cost Cortex-M0+ platform can run at up to 50 MHz, enabling real-time filtering and calibration while keeping the instruction footprint appropriate for embedded firmware. The 256 KB flash supports application code and lookup data, while the 36 KB SRAM can hold acquisition and processing buffers. The 12-bit ADC is useful for moderate-resolution measurements, although analog front-end design determines overall measurement accuracy. Power planning should compare active, sleep, and shutdown behavior under the actual clock and peripheral configuration. Place input protection close to the connector, maintain a controlled reference node, and keep LCD or radio switching current away from sensitive analog traces to avoid measurement disturbance.
推荐
Communications Hub
The LPC11E68JBD64E is suitable for a small communications hub or protocol gateway when the design requires a local Cortex-M0+ controller and compact memory. At rates up to 50 MHz, it can manage framed serial data, routing logic, timers, and device-status monitoring, while 256 KB flash accommodates firmware and protocol configuration. The 36 KB SRAM provides room for receive and transmit queues without immediately requiring external memory. Board implementation should separate communication transceivers from sensitive analog circuitry, terminate interfaces according to their protocol requirements, and provide a common low-impedance ground strategy. Firmware should distinguish temporary bus congestion from a permanent link failure and expose diagnostic counters for maintenance. Verify every reused peripheral and pin against the selected LPC11Exx variant because the U68 and E68 family options serve different interface needs.
推荐
Educational Controller Platform
The LPC11E68JBD64E provides a practical platform for embedded-systems education because it combines an approachable Arm Cortex-M0+ core, 256 KB flash, 36 KB SRAM, and a 12-bit ADC in a 64-LQFP package. Students can develop firmware for timers, GPIO control, serial communication, analog acquisition, and low-power states without introducing external memory. The visible package leads also simplify inspection and hand-soldering during introductory laboratory work. For instructional boards, provide a labeled programming connector, accessible test points, a stable clock implementation, and clearly separated analog and digital supply paths. Lab exercises should include startup validation, reset behavior, ADC calibration, and safe handling of unused pins so students learn practical PCB and firmware practices. A transition to mass production should add automated programming, production test points, and a controlled supplier configuration.
推荐
推荐产品汇总
工程参考数据： LPC11E68JBD64E ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | LPC11U68JBD64E | LPC11E67JBD64E | LPC11E68JBD64K |
|---|---|---|---|---|
| Manufacturer | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Package | 64-LQFP (10x10) | 64-LQFP (10x10) | 64-LQFP (10x10) | 64-LQFP (10x10) |
| Ordering Suffix | E | E | E | K |
关键差异点
- Confirmed 256 KB flash and 36 KB SRAM configuration （对比 LPC11E67JBD64E)
- Standard E68 configuration with 50 MHz operation （对比 LPC11U68JBD64E)
- Same documented 64-LQFP 10 mm × 10 mm family footprint （对比 LPC11E68JBD64K)
设计说明
Assign all 64 LPC11E68JBD64E positions from the exact manufacturer pin-description table before routing. Separate the analog input network from switching and high-current return paths, place input protection close to external connectors, and maintain a continuous ground reference under the MCU. The 10 mm × 10 mm LQFP footprint should be checked against the land pattern and paste mask because package body dimensions alone do not define acceptable soldering geometry.
Implement the manufacturer-recommended input, output, and internal-regulator bypass capacitors using the exact voltage and configuration intended for the design. Account for startup current, peripheral load, clock choice, and sleep-state behavior rather than only the maximum clock frequency. Validate the power rails with the analog and digital loads operating together, since the 12-bit ADC measurement accuracy can be affected by supply and reference disturbances even when the MCU logic remains functional.
Do not treat the 64-LQFP footprint as sufficient evidence of drop-in compatibility. For LPC11U68JBD64E and LPC11E67JBD64E, compare package drawing, supply pins, oscillator pins, ADC channels, communication interfaces, reset behavior, debug programming, and software device identifiers. The LPC11E68JBD64K option may differ in ordering or temperature characteristics. Prototype each substitution on a carrier board before approving it for production.
Keep the clock circuit short and symmetric, follow the NXP layout guidance for the internal 8 MHz oscillator or an external crystal or ceramic resonator, and keep fast communication traces away from the ADC input area. Provide accessible programming and reset test points for production support. Route ground returns without splits beneath the MCU, and verify the external network interfaces independently from the microcontroller supply rail to prevent bus transients from coupling into analog measurements.
Estimated firmware impact: selecting a 50 MHz operating condition increases dynamic power relative to lower-frequency operation and may alter regulator headroom requirements. Estimate the average input current from the NXP operating-current table for the chosen voltage, clock, peripherals, and duty cycle, then size the source and thermal path around the resulting dissipation. Recheck the estimate after oscillator, ADC, serial interface, and external load settings are finalized.
合规信息
The manufacturer product page identifies the device as active but does not expose the requested environmental compliance details in the available product record. No additional compliance claim is inferred from the package or ordering suffix.
