NXP Semiconductors LPC11E68JBD48K

Overview

LPC11E68JBD48 from NXP Semiconductors is a 32-bit ARM Cortex-M0+ microcontroller operating at up to 50 MHz, featuring 256 KB flash, 36 KB SRAM, and 4 KB EEPROM. It integrates a 12-bit ADC with 8 input channels, two I²C interfaces (one Fast-mode Plus), five USARTs (four with shared fractional baud generator), and a configurable SCTimer/PWM subsystem supporting up to 19 PWM outputs. It targets embedded control in space-constrained industrial and consumer applications requiring low-power operation across −40 °C to +105 °C.

For engineers reviewing the LPC11E68JBD48 datasheet, LPC11E68JBD48 pinout, LPC11E68JBD48 application, or LPC11E68JBD48 equivalent, key selection considerations include its LQFP48 package with 36 GPIO pins, support for Deep power-down mode with wake-up on PIO0_16, RTC with separate VBAT supply, and hardware CRC engine for firmware integrity verification.

Technical Context

The LPC11E68JBD48 implements the ARM Cortex-M0+ core with a two-stage pipeline, single-cycle I/O access, and integrated NVIC for deterministic interrupt handling. Its AHB multilayer matrix enables concurrent peripheral access without bus contention, while the Micro Trace Buffer (MTB) supports real-time instruction trace for debug and profiling.

Peripheral architecture includes a dedicated DMA controller with 16 channels and programmable triggers, dual SSP controllers with DMA support, and a flexible PWM/timer subsystem combining standard counter/timers (CT16B0/CT32B0/CT16B1/CT32B1) with two State-Configurable Timers (SCT0/SCT1) for complex waveform generation and event sequencing.

Key Specifications

Pinout & Package

Package: LQFP48 (SOT313-2), plastic low-profile quad flat package with 48 leads, body size 7 mm × 7 mm × 1.4 mm, 0.5 mm lead pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with LPC11U68JBD48 and LPC1343FBD48, the LPC11E68JBD48 uniquely balances EEPROM persistence, RTC battery backup, and Deep power-down wake-up in an LQFP48 footprint-making it optimal for cost-sensitive, battery-aware metering and monitoring systems where data integrity and long-term timekeeping are critical.

Availability

LPC11E68JBD48 is available at Aetrix Electronics and suitable for medical monitors, GPS trackers, three-phase e-meters, car radios, and gaming accessories requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for LPC11E68JBD48 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 focused on secure connectivity solutions for automotive, industrial, IoT, mobile, and communication infrastructure markets.

The LPC11E6x family was designed specifically for cost-sensitive, low-power embedded control applications demanding rich peripheral integration-including precision timing, analog sensing, and multi-protocol serial connectivity-in compact packages.

FAQ

What is the maximum operating frequency and core type of the LPC11E68JBD48?

The LPC11E68JBD48 features an ARM Cortex-M0+ core rated for operation up to 50 MHz. This core uses a two-stage pipeline and supports fast single-cycle I/O access, delivering efficient real-time performance with minimal power consumption. The LPC11E68JBD48 achieves this frequency using its internal PLL, which allows operation at full speed without requiring a high-frequency external crystal.

How much on-chip memory does the LPC11E68JBD48 provide, and what types are included?

The LPC11E68JBD48 integrates 256 KB of on-chip flash memory, 36 KB of SRAM (comprising 32 KB main SRAM plus two 2 KB blocks), and 4 KB of EEPROM. This memory configuration supports complex firmware, real-time data buffering, and persistent storage of calibration data or user settings without external components. The LPC11E68JBD48's EEPROM is endurance-rated and accessible via ROM API for reliable field updates.

Does the LPC11E68JBD48 support low-power operation, and what modes are available?

Yes, the LPC11E68JBD48 includes multiple low-power modes managed by its integrated Power Management Unit: Sleep, Deep-sleep, Power-down, and Deep power-down. In Deep power-down mode, current drops to µA-level, and the device can be woken via PIO0_16, external pin interrupts, or USART activity. The LPC11E68JBD48 retains RTC operation and backup register contents in Deep power-down when VBAT is supplied.

What analog peripherals are integrated into the LPC11E68JBD48?

The LPC11E68JBD48 includes a 12-bit successive-approximation ADC with up to 8 input channels, capable of 2 Msamples/s maximum sample rate and supporting two independent conversion sequences. It also integrates a calibrated on-die temperature sensor. These analog resources enable direct interfacing with thermistors, voltage dividers, current shunts, and other sensors-eliminating the need for external signal conditioning in many applications. The LPC11E68JBD48's ADC supports both internal and external triggering for synchronized sampling.

Which serial communication interfaces does the LPC11E68JBD48 support, and how many instances are available?

The LPC11E68JBD48 supports five USARTs (USART0–USART4), two I²C-bus interfaces (I²C0 and I²C1), and two SSP controllers (SSP0 and SSP1). I²C0 supports Fast-mode Plus (1 MPbs), while four USARTs share a fractional baud-rate generator. All USARTs support DMA, synchronous mode, and RS-485 mode. The LPC11E68JBD48's serial interface count and flexibility make it suitable for multi-peripheral systems such as industrial gateways and smart meters.