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NXP Semiconductors LH79520N0Q000B1,55
- Part No.:
- LH79520N0Q000B1,55
- Manufacturer:
- NXP Semiconductors
- Category:
- Microcontrollers
- Package:
- 176-LQFP
- Datasheet:
-
LH79520N0Q000B1,55.pdf
- Description:
- IC MCU 32BIT ROMLESS 176LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,653
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Product details
Overview
LH79520N0Q000B1 from NXP Semiconductors is an ARM720T-based System-on-Chip microcontroller featuring a 77.4144 MHz CPU, 32 kB on-chip SRAM, MMU for Windows CE™ support, integrated color LCD controller (up to 800×600), and triple UARTs with IrDA SIR - designed for advanced portable embedded displays and industrial HMI systems.
For engineers reviewing the LH79520N0Q000B1 datasheet, LH79520N0Q000B1 pinout, LH79520N0Q000B1 application, or LH79520N0Q000B1 equivalent, key selection criteria include ARM720T RISC core compatibility, 176-pin LQFP package footprint, SDRAM/Static memory interface timing, LCD panel timing register programmability, and JTAG debug interface availability.
Technical Context
The LH79520N0Q000B1 implements an ARM720T core with 8 kB cache and MMU, connected via Advanced High-Performance Bus (AHB) to integrated peripherals including SDRAM and Static Memory Controllers, multi-stream DMA, and a fully programmable Color LCD Controller supporting STN, TFT, and AD-TFT panels. Its clock system includes dual oscillators (14.7456 MHz + 32.768 kHz) with on-chip PLL for CPU/bus clock generation.
Power management supports four operational modes - Active (55 mA max), Standby (35 mA max), Sleep (5.5 mA max), and Stop Mode 2 (18 µA) - with 1.8 V core and 3.3 V I/O supply domains. All digital I/O pins are 5 V tolerant except XTALIN and XTAL32IN, which require 1.8 V ±10% input.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM720T RISC, 32-bit, with 8 kB cache and MMU - enables Windows CE™ OS execution and virtual memory mapping. |
| Clock Speed | 77.4144 MHz - derived from 14.7456 MHz crystal + on-chip PLL; determines maximum instruction throughput and peripheral timing margins. |
| On-chip Memory | 32 kB SRAM - used for boot code, stack, and critical real-time buffers without external latency. |
| Display Support | Programmable LCD controller up to 800×600 resolution - supports STN, TFT, AD-TFT with palette-based or direct-color modes. |
| Memory Interface | SDRAM controller (2 chip selects, 32-bit data bus) + Static Memory Controller (8 banks × 64 MB, 8/16/32-bit data paths) - enables glueless expansion with configurable wait states and burst modes. |
| Peripherals | 3 UARTs (16-byte FIFO, IrDA SIR), 2 PWM channels, 2 dual-channel timers, RTC, watchdog, SSP (SPI/MICROWIRE/SSI), 64 GPIO - provides full-system integration for portable HMI. |
| Power Modes | Active, Standby, Sleep, Stop Mode 2 - allows dynamic power scaling; Stop Mode 2 draws only 18 µA for RTC retention and wake-on-interrupt capability. |
Pinout & Package
LH79520N0Q000B1 is housed in a plastic low-profile quad flat package (LQFP176), measuring 20 × 20 × 1.4 mm (SOT1017-1), with 176 leads and exposed thermal pad. Pin functions are multiplexed across memory, peripheral, and debug interfaces; all I/O pins support 5 V tolerance except XTALIN/XTAL32IN (1.8 V ±10%).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A[25:0] | Address Output | 26-bit address bus for static memory controller; supports up to 512 MB addressing across eight 64 MB banks. |
| D[31:0] | Data Input/Output | 32-bit bidirectional data bus shared between SDRAM and static memory controllers; enables high-bandwidth transfers. |
| SDCLK / SDCKE / nRAS / nCAS | SDRAM Timing Control | Generates synchronous clock, chip enable, row/column strobes - directly drives standard SDRAM parts without external logic. |
| LCDVD[17:0] / LCDDCLK / LCDENAB / LCDFP | LCD Panel Interface | 18-bit RGB data bus + pixel/frame sync signals - configures native timing for STN/TFT panels up to 800×600 at ≤65 Hz. |
| UARTTX0 / UARTRX0 / UARTIRTX0 / UARTIRRX0 | Serial Communication | Dedicated UART0 pins with IrDA SIR encode/decode - supports 460.8 kb/s UART or 115.2 kb/s half-duplex infrared. |
| TMS / TDI / TDO / TCLK / nTRST | JTAG Debug Interface | IEEE 1149.1-compliant boundary scan and debug port - enables full-core visibility, flash programming, and real-time trace. |
Key Features
| Feature | Design Value |
|---|---|
| ARM720T + MMU | Enables Windows CE™ OS deployment with virtual memory protection and process isolation in resource-constrained devices. |
| Integrated LCD Controller | Eliminates external display controller IC; supports palette-based (256-entry × 16-bit RAM) and true-color modes for STN/TFT panels. |
| Multi-stream DMA | Four independent 32-bit burst-based streams offload CPU during LCD refresh, UART transfers, and memory-to-memory operations. |
| Flexible Memory Interface | Single SoC supports SDRAM, NOR/NAND Flash, SRAM, and ROM with software-configurable timing per bank - reduces BOM count. |
| Low-Power Operation | Stop Mode 2 (18 µA) retains RTC and enables wake-on-external-interrupt - extends battery life in always-on portable displays. |
| 5 V Tolerant I/O | Allows direct interfacing with legacy 5 V peripherals (e.g., keypad controllers, level translators) without external voltage shifters. |
Applications
| Industrial HMI Display Terminal | Portable Medical Device UI |
|---|---|
|
Use Scenario: A ruggedized handheld diagnostic tool requires local display rendering, touch input handling, and serial communication with sensors. IC Role / Device Role / Timing Role: LH79520N0Q000B1 serves as main application processor and display controller, driving a 480×272 TFT panel via its integrated CLCDC while managing UART-connected biometric sensors. Use Value: On-chip 32 kB SRAM stores frame buffers; MMU isolates OS and application tasks; 176-pin LQFP simplifies PCB layout for compact enclosure. |
Use Scenario: Battery-powered patient monitor with color graphical display, real-time waveform rendering, and IR data upload. IC Role / Device Role / Timing Role: LH79520N0Q000B1 executes embedded Linux, renders ECG waveforms using DMA-accelerated LCD updates, and transmits logs via IrDA SIR. Use Value: Stop Mode 2 preserves RTC and enables instant wake-on-alarm; integrated PWM controls backlight dimming; 32-bit data bus ensures fast sensor data ingestion. |
| POS Terminal with Integrated Display | Smart Home Control Panel |
|
Use Scenario: Retail point-of-sale terminal integrates touchscreen, barcode scanner interface, and Ethernet connectivity via external PHY. IC Role / Device Role / Timing Role: LH79520N0Q000B1 acts as host controller, managing SPI-connected flash storage, UART-linked scanner, and parallel LCD interface. Use Value: Static Memory Controller supports 16-bit NOR flash boot; 64 GPIOs route to keypad and status LEDs; SDRAM interface enables smooth GUI transitions. |
Use Scenario: Wall-mounted home automation panel with capacitive touch, ambient light sensing, and Zigbee/Wi-Fi coexistence. IC Role / Device Role / Timing Role: LH79520N0Q000B1 runs lightweight RTOS, drives 800×480 STN display, and communicates with wireless modules via UART/SSP. Use Value: Programmable LCD timing adapts to varying panel vendors; low-power Sleep mode (5.5 mA) extends standby time; 5 V tolerant I/O interfaces with legacy HVAC controls. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ARM7-based SoC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LH7A404N0Q000B1 | ARM926EJ-S core, 200 MHz, 64 kB SRAM, no MMU - higher performance but lacks Windows CE™ compatibility. | Targeted at Linux-based applications requiring faster CPU and JPEG acceleration; not suitable for legacy CE-based firmware migration. | Select when migrating to ARM9 architecture with need for DSP extensions and video decode acceleration. |
| AT91SAM9260 | ARM926EJ-S core, 200 MHz, 16 kB SRAM, integrated USB host/device, no dedicated LCD controller - requires external display driver. | Designed for USB-centric industrial gateways; lacks native STN/TFT timing engine, increasing BOM and layout complexity for display systems. | Choose when USB connectivity is primary requirement and display functionality is secondary or handled externally. |
Compared with LH79520N0Q000B1, LH7A404N0Q000B1 offers higher clock speed and ARM9 features but removes MMU-based Windows CE™ support, while AT91SAM9260 trades integrated LCD control for USB host capability - making LH79520N0Q000B1 optimal for cost-sensitive, display-first portable HMI designs.
Availability
LH79520N0Q000B1 is available at Aetrix Electronics and suitable for industrial HMI terminals, portable medical UIs, POS display systems, and smart home control panels requiring stable component supply and long-term lifecycle support.
Supply support for LH79520N0Q000B1 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 LH79520N0Q000B1 belongs to NXP's legacy ARM7 SoC product line, originally developed by Sharp and acquired in 2007 - engineered specifically for low-power, high-integration portable display systems with Windows CE™ compatibility.
FAQ
What is the core architecture of the LH79520N0Q000B1?
The LH79520N0Q000B1 features an ARM720T RISC core with 8 kB cache and MMU, operating at 77.4144 MHz. It supports Windows CE™ through hardware-enforced virtual memory mapping and is optimized for deterministic real-time response in portable display applications. The core is fully static and compatible with ARM7TDMI™ instruction set.
Does the LH79520N0Q000B1 support external SDRAM?
Yes, the LH79520N0Q000B1 includes a dedicated SDRAM controller with two chip selects (nDCS0/nDCS1), SDCLK output, and DQM masking - supporting 32-bit or 16-bit SDRAM parts with 2K/4K/8K row addressing. It interfaces directly with standard SDRAM without glue logic and supports soft-reset preservation of SDRAM contents.
What display resolutions and panel types does the LH79520N0Q000B1 support?
The LH79520N0Q000B1's integrated Color LCD Controller supports STN, TFT, and AD-TFT panels up to 800×600 resolution. It delivers 15 gray levels for monochrome STN, 3,375 colors for color STN, and 64 k direct colors for TFT - with programmable timing registers and dual 16-deep FIFOs for seamless refresh.
How many UART interfaces does the LH79520N0Q000B1 provide, and what are their capabilities?
The LH79520N0Q000B1 integrates three UARTs (UART0–UART2), each with 16-byte transmit/receive FIFOs and IrDA SIR support on UART0. UART0 supports data rates up to 460.8 kb/s in UART mode or 115.2 kb/s in half-duplex infrared mode, with false start bit detection and programmable baud rate generation.
What power management modes are available on the LH79520N0Q000B1?
The LH79520N0Q000B1 offers four power modes: Active (55 mA max), Standby (35 mA max), Sleep (5.5 mA max), and Stop Mode 2 (18 µA). Stop Mode 2 retains RTC operation and enables wake-on-external-interrupt, making it ideal for battery-backed portable displays requiring ultra-low standby current.
LH79520N0Q000B1,55 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 176-LQFP
- Series:
- BlueStreak ; LH7
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ARM7®
- Core Size:
- 32-Bit Single-Core
- Speed:
- 77.4MHz
- Connectivity:
- EBI/EMI, IrDA, Microwire, SPI, SSI, SSP, UART/USART
- Peripherals:
- DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 64
- Program Memory Size:
- -
- Program Memory Type:
- ROMless
- EEPROM Size:
- -
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.62V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- External
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
LH79520N0Q000B1,55 FAQ
1.How can I place an order for LH79520N0Q000B1,55 through Aetrix?
Please submit a Request for Quotation (RFQ) for LH79520N0Q000B1,55 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for LH79520N0Q000B1,55 reliable?
The price and inventory of LH79520N0Q000B1,55 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LH79520N0Q000B1,55 is usually 5 days.
3.What payment methods are accepted for LH79520N0Q000B1,55?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LH79520N0Q000B1,55 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LH79520N0Q000B1,55?
LH79520N0Q000B1,55 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LH79520N0Q000B1,55 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for LH79520N0Q000B1,55?
For technical support, including LH79520N0Q000B1,55 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LH79520N0Q000B1,55 requirements.
6.How does Aetrix verify that LH79520N0Q000B1,55 is sourced from the original manufacturer or authorized distributors?
All LH79520N0Q000B1,55 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LH79520N0Q000B1,55 meets industry standards.
7.What is the process for return or replacement of LH79520N0Q000B1,55?
All LH79520N0Q000B1,55 units undergo pre-shipment inspection (PSI). If there is an issue with LH79520N0Q000B1,55, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The LH79520N0Q000B1,55 part is unused and in its original packaging.
Return procedure for LH79520N0Q000B1,55:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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