Sharp System on Chip with MMU

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Home > Featured Products > Volume 1 - Sharp System on Chip with MMU

LH79524 32-bit ARM720T System on Chip with MMU and 8KB unified cache

77.4MHz (-40 to +85°C) ARM7 general purpose SoC with a broad feature set suitable for applications requiring LCD graphics with touch screen, USB or Ethernet network capabilities, and advanced CODEC support.

The newly released LH79524 (208 CABGA 32-bit external bus) and LH79525 (176 LQFP 16-bit external bus) expands the ARM720T branch of the BlueStreak brand of SHARP SoCs. These products offer a full assortment of essential peripherals including an integrated LCD graphics controller with touch screen support, a 10/100 Ethernet MAC, and USB 2.0 (12Mbps) client interfaces. Other branches include the introductory level ARM7TDMI based LH754xx parts and the high end (up to 266MHz) ARM922T LH7A40x parts.

All members of the BlueStreak Family of SoCs lower system cost, and ease development by including an integrated color LCD controller, and a consistent list of essential peripherals consisting of multiple 16-bit counter timers and UARTs, Synchronous Serial Ports that support multiple protocols, a Real Time Clock (RTC), and a Watch Dog Timer (WDT).

The LH79524/5 has an on-chip voltage regulator with a 3.3V input to generate the 1.8V core voltage, eliminating the need for a separate power supply. The part also supports multiple clocking modes including Active, Standby, Sleep and Stop allowing for maximum battery life in embedded applications. An Integrated low voltage Brownout detector is also included to enhance system performance by responding to low battery conditions before they become critical.

The CPU can be clocked at up to 77.4MHz over the full industrial (-40°C to + 85°C) temperature range for extreme environmental conditions. The integrated MMU enables full featured operating systems such as Linux or WinCE to be hosted. An integrated 8KB unified cache allows for maximum on-chip execution. The chip also has 16KB of on-chip SRAM for additional on-chip capabilities.

Four DMA channels, Vectored Interrupt support, and a synchronous DRAM controller round out the processor support blocks.

The special peripherals of this chip include a 10/100 Ethernet MAC, I²S CODEC interface and a USB 2.0 (12 Mbps) device port to allow cost effective implementation of products ranging from industrial controllers to MP3 players.

Features
•	77.4MHz (-40°C to + 85°C), 32-bit ARM720T RISC core
•	32-bit data bus (LH79524; 16-bit data bus on the LH79525)
•	8KB unified Cache and MMU (WinCE and Linux capable)
•	Multiple Boot-up options including serial boot from NAND Flash
•	Color LCD controller with Advanced-TFT support
•	16KB on-chip SRAM and a synchronous DRAM controller
•	10/100 Ethernet MAC
•	USB 2.0 device (Full Speed; 12Mbps)
•	Advanced CODEC support (I²S interface)
•	Four DMA channels
•	Serial and parallel interfaces; Three UARTs (includes IrDA infrared SIR), Synchronous Serial Port (SSP; protocols: SPI™, MicroWire™, SSI and I²S)
•	Three 16-bit Counter Timers (CT), Real Time Clock (RTC), Watch Dog Timer (WDT)
•	10-Channel 10-bit A/D with integrated touch screen controller
•	Power control with different clocking modes: Active, Standby, Sleep, Stop
•	Brownout detector
•	Integrated voltage regulator allows a single 3.3V supply to power the core and peripherals
•	JTAG debug interface and boundary scan
•	Programmable PLL

Applications
•	Mobile information
•	Smart Toys
•	Network Appliance
•	Hubs
•	Medical and other instrumentation
•	Security and Home/Office automation panel
•	Point of sales
•	Industrial control
•	Multimedia picture frame

Benefits
•	ARM720T MCU with extensive tool chain and debug support through SHARP and third party vendors.
•	Low cost (<$350) Software Development Kit (SDK) SDK-LH79524 available from Nu Horizons.
•	Highly integrated SoC with many peripherals and interfaces to lower system cost and simplify product development.
•	Integrated LCD Graphics controller which can directly drive many color or grayscale STN or TFT panels up to 1,024 x 1,024 resolution.
•	Developed in the U.S. with engineering support from BlueStreak Headquarters in Camas, Washington and from a global array of field offices.
•	Extensive driver library and Board Support Packages (BSP) for many operating systems including WinCE, Linux, and Real Time Operating Systems (RTOS) from many vendors.
•	10/100 Ethernet MAC simplifies the development of Network Appliance products.
•	USB 2.0 device port (Full speed 12Mbps) allows easy USB connection to PC USB Host.
•	I²S CODEC interface gives the part advanced audio capabilities.

Datasheets
•	LH79525 System on Chip Technical Product Brief (PDF - 130Kb)

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