NXP Semiconductors LH75401N0Q100C0,55

Overview

LH75401N0Q100C0 from NXP Semiconductors is a 144-pin LQFP ARM7TDMI-S™ System-on-Chip microcontroller operating at up to 84 MHz, featuring 32 kB on-chip SRAM (16 kB TCM + 16 kB internal), an 8-channel 10-bit ADC, integrated touch screen controller, real-time clock, three capture/compare/PWM timers with watchdog, and a CAN 2.0B controller. It targets embedded industrial HMI and portable display terminals requiring integrated LCD control and fieldbus connectivity.

For engineers reviewing the LH75401N0Q100C0 datasheet, LH75401N0Q100C0 pinout, LH75401N0Q100C0 application, or LH75401N0Q100C0 equivalent, key selection criteria include its superset peripheral set versus LH75411, CAN 2.0B support, 12-bit LCD interface for VGA–XGA panels, and 5 V-tolerant I/O with single 3.3 V supply operation.

Technical Context

The LH75401N0Q100C0 integrates an ARM7TDMI-S core with AHB/APB bus architecture, supporting internal PLL-driven or external clock operation across 14–20 MHz crystal input range. Its memory subsystem includes tightly coupled memory for deterministic interrupt response and static memory controller with eight chip selects, byte-lane strobes, and wait-state support.

Peripherals are organized into dedicated functional blocks: a full-color LCD controller supporting STN/TFT/HR-TFT/AD-TFT with programmable timing and power sequencing signals; a synchronous serial port compatible with SPI/Microwire/SSI; and dual UARTs (U0/U1) plus high-speed UART2, all with configurable baud rates up to 3.2 Mbps under 70 MHz system clock.

Key Specifications

Pinout & Package

144-pin LQFP (SOT486-1), body size 20 × 20 × 1.4 mm, with exposed pad for thermal dissipation. Pin functions are multiplexed across 16 GPIO ports (A–I, P), memory interface (D[15:0], A[23:0], nCS[0:3], nWE, nOE), and dedicated peripherals including CAN, UARTs, SSP, LCD, ADC, timers, and JTAG.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ARM7-based HMI applications.

Compared with LH75411N0Q100C0, the LH75401N0Q100C0 adds CAN 2.0B for fieldbus integration without layout changes; versus LPC2478FBD208, it trades Flash/USB/Ethernet for on-chip LCD timing and touch support-reducing BOM count in display-focused designs.

Availability

LH75401N0Q100C0 is available at Aetrix Electronics and suitable for industrial HMI terminals, portable medical displays, automotive infotainment subsystems, and smart energy meter displays requiring stable component supply and long-term design continuity.

Supply support for LH75401N0Q100C0 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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.

The LH75401 belongs to NXP's BlueStreak SoC family, designed specifically for cost-sensitive, display-intensive embedded applications requiring integrated graphics control, real-time responsiveness, and industrial-grade peripheral sets.

FAQ

What is the maximum system clock frequency supported by the LH75401N0Q100C0?

The LH75401N0Q100C0 supports a maximum CPU clock frequency of 84 MHz, achieved using its internal PLL with a 14–20 MHz crystal input. This frequency enables real-time execution of graphics rendering, touch processing, and CAN protocol stacks without external clock synthesis circuitry. The LH75401N0Q100C0 maintains timing integrity across all integrated peripherals-including LCD controller, UARTs, and timers-at this speed.

Does the LH75401N0Q100C0 include an integrated LCD controller, and what display resolutions does it support?

Yes, the LH75401N0Q100C0 includes a fully integrated color/grayscale LCD controller supporting VGA (12-bit direct color), SVGA (8-bit palettized), and XGA (4-bit grayscale) resolutions. It drives STN, TFT, HR-TFT, and AD-TFT panels via a 12-bit parallel video bus with programmable timing, polarity, and power sequencing signals such as LCDVEEEN, LCDVDDEN, and LCDDSPLEN. This eliminates the need for external display timing generators in most HMI designs.

How does the CAN 2.0B controller in the LH75401N0Q100C0 differ from the LH75411N0Q100C0 variant?

The LH75401N0Q100C0 includes a full CAN 2.0B controller with support for both standard (11-bit) and extended (29-bit) identifiers, message filtering, and error handling-while the LH75411N0Q100C0 omits this peripheral entirely. Both share identical pinout, memory map, LCD controller, and other peripherals. The CAN capability makes the LH75401N0Q100C0 suitable for automotive and industrial networked HMIs where fieldbus integration is required.

What power supply requirements does the LH75401N0Q100C0 have, and how is its I/O voltage tolerance implemented?

The LH75401N0Q100C0 operates from a single 3.3 V supply for its I/O ring (VDD/VSS), with separate core (VDDC/VSSC), PLL analog (VDDA_PLL/VSSA_PLL), and ADC analog (VDDA_ADC/VSSA_ADC) domains. All digital I/O pins are 5 V tolerant-enabling direct connection to 5 V logic, sensors, or displays without level-shifting components. This tolerance is implemented through robust input protection circuitry and verified across the full −40°C to +85°C operating temperature range.

Can the LH75401N0Q100C0 support resistive touch screen interfaces, and which pins are dedicated for this function?

Yes, the LH75401N0Q100C0 includes a hardware-accelerated 4-wire resistive touch screen interface with dedicated analog inputs: AN0 (UL/X+), AN1 (UR/X−), AN2 (LL/Y+), AN3 (LR/Y−), and AN4 (wiper). These pins connect directly to the touch panel, and the on-chip ADC performs coordinate calculation with built-in debouncing and pen-down detection-reducing firmware overhead and improving touch response accuracy in the LH75401N0Q100C0.