LH77790B datasheet(5/32 Pages) SHARP

Part #	LH77790B

Description	Embedded Microcontroller Thermal & Electrical Specification

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Manufacturer	SHARP [Sharp Corporation]

Direct Link	http://sharp-world.com/

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LH77790B

Thermal & Electrical Specification

3

• Flexible Memory Interface

– Six Multiplexeled Chip Enables/CAS pins

– Two RAS pins

– Fully Programmable

– Six SRAM Banks (64MB each)

– Two DRAM Banks (128MB each)

– Access Privileges (System/User)

• On-Chip DRAM Controller

– Fast Page Mode

– Normal Mode

– CAS before RAS Refresh

• Programmable Peripheral Interface (PPI)

– 24 Programmable I/O Signals

– Three Modes of Operation

• Three 16-Bit Counter/Timer Channels

– Six Modes of Operation

– Binary or BCD Counting

• Hardware Watchdog Timer

– Eight Time-out Intervals

– Protection Mechanism

– Three Time-out Actions

• Little Endian

• JTAG Interface

• Dual Supply Voltage

– 5 V TTL - 25 MHz

– 3.3 V LVTTL - 16.7 MHz

Development Environment

The 790B Evaluation Board (part number LU7790AH2A) and the ARM Software Develop-

ment ToolKit (part number LU7V211H1) give users full access to the power and features

of the 790B and provide a complete integrated environment for development. Users will be

able to develop, benchmark, and profile both hardware and software easily and quickly.

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