NXP Semiconductors LPC2194HBD64,151

Overview

LPC2194HBD64,151 from NXP Semiconductors is a 16/32-bit ARM7TDMI-S microcontroller in LQFP64 package, featuring 256 kB flash, 16 kB SRAM, four CAN interfaces, 4-channel 10-bit ADC (2.44 µs conversion), and 46 GPIO pins with 5 V tolerance. It operates at up to 60 MHz with dual power supplies (1.8 V core / 3.3 V I/O) and supports automotive CAN gateway and industrial protocol converter applications.

For engineers reviewing the LPC2194HBD64,151 datasheet, LPC2194HBD64,151 pinout, LPC2194HBD64,151 application, or LPC2194HBD64,151 equivalent, key selection criteria include multi-CAN bus arbitration capability, real-time debug support via EmbeddedICE-RT and trace interface, fast GPIO toggling (3.5× improvement over legacy LPC2000), and ISP/IAP firmware update flexibility.

Technical Context

The LPC2194HBD64,151 implements an ARM7TDMI-S core with Thumb instruction set for code density optimization, coupled with a 128-bit wide memory interface enabling full 60 MHz execution speed. Its on-chip memory subsystem includes 256 kB flash (100,000 erase/write cycles, 20-year retention) and 16 kB SRAM accessible in 8/16/32-bit modes.

Four independent CAN 2.0B controllers share a global acceptance filter supporting both 11-bit and 29-bit identifiers, while the 10-bit ADC delivers ≥400 kSPS throughput with dedicated result registers per channel and burst mode operation. The Vectored Interrupt Controller supports 32 prioritized IRQ sources including timer match/capture, UART status, PWM events, and external interrupts EINT0–EINT3.

Key Specifications

Pinout & Package

LPC2194HBD64,151 uses a plastic low-profile quad flat package (LQFP64, SOT314-2) measuring 10 × 10 × 1.4 mm with 64 leads and exposed thermal pad (not electrically connected).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LPC2194HBD64,151, LPC2368FBD100 trades CAN capability for USB/Ethernet connectivity and larger memory, while STM32F105RCT6 offers modern Cortex-M3 performance with lower power but halves the CAN interface count - neither provides the four-CAN + global filter combination essential for complex automotive gateway designs.

Availability

LPC2194HBD64,151 is available at Aetrix Electronics and suitable for automotive CAN gateway development, industrial protocol converter design, and medical sensor hub implementation requiring stable component supply across extended product lifecycles.

Supply support for LPC2194HBD64,151 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 specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with deep expertise in ARM-based microcontrollers and CAN ecosystem integration.

The LPC2194HBD64,151 belongs to NXP's LPC2000 family of ARM7-based microcontrollers designed specifically for real-time embedded control in harsh environments - emphasizing CAN networking, deterministic interrupt response, and long-term industrial qualification.

FAQ

What is the maximum operating frequency of the LPC2194HBD64,151?

The LPC2194HBD64,151 achieves a maximum CPU clock frequency of 60 MHz using its on-chip Phase-Locked Loop (PLL) with 100 µs settling time. This frequency is sustained by the 128-bit wide memory interface and accelerator architecture, enabling full 32-bit instruction execution without wait states. The LPC2194HBD64,151 maintains this speed across its full −40 °C to +125 °C operating temperature range when powered within specified voltage tolerances.

Does the LPC2194HBD64,151 support In-System Programming (ISP)?

Yes, the LPC2194HBD64,151 supports In-System Programming via its built-in bootloader, allowing flash memory updates through UART0 without removing the device from the target board. Flash programming takes 1 ms per 512-byte line, and sector or full-chip erase completes in 400 ms. The LPC2194HBD64,151 also supports In-Application Programming (IAP), enabling firmware upgrades or data logging while the application runs.

How many CAN interfaces does the LPC2194HBD64,151 provide, and what standards do they meet?

The LPC2194HBD64,151 integrates four independent CAN 2.0B controllers compliant with ISO 11898-1, supporting data rates up to 1 Mbit/s per bus. All four controllers share a global acceptance filter capable of recognizing both 11-bit standard and 29-bit extended identifiers. This architecture enables the LPC2194HBD64,151 to function as a CAN gateway connecting heterogeneous networks - a capability not replicated in most competing single-chip solutions.

What is the ADC resolution and conversion speed of the LPC2194HBD64,151?

The LPC2194HBD64,151 features a 10-bit successive approximation ADC with four multiplexed input channels (AIN0–AIN3). Its minimum conversion time is 2.44 µs, enabling a maximum sampling rate exceeding 400 kSPS in burst mode. Each analog input connects directly to the ADC front-end with no internal multiplexer switching delay, and dedicated result registers per channel reduce interrupt overhead during high-speed acquisition - a key advantage confirmed in the LPC2194HBD64,151 datasheet Rev. 6.

Is the LPC2194HBD64,151 pin-compatible with other members of the LPC2000 family?

The LPC2194HBD64,151 is not fully pin-compatible with earlier LPC2100 series devices due to enhanced peripheral sets including four CAN controllers, dedicated trace pins (P1[16]–P1[20]), and Fast GPIO register mapping introduced in the LPC2194/01 variant. While it shares the LQFP64 package footprint with LPC2138/LPC2148, pin functions differ significantly - for example, P0[21]–P0[24] are assigned to CAN3/CAN2 in LPC2194HBD64,151 but serve as general-purpose I/O or SPI in older variants.