Overview

Portable devices are becoming more and more prevalent in our daily life. They are used as personal information managers, communication devices, digital cameras, handheld games, bar-code scanners, medical equipment, electronic instrumentation, and navigation systems. There are significant design challenges for portable devices. Low cost is a top priority for high volume products. Low power is a must for long battery life. High performance is critical for computationally-intensive applications such as PDAs, GPS, and 2-D scanners. Communication capabilities and effective user interface are integral parts of any portable device. Last, but not least, superior product development support tools are crucial to reducing time-to-market.

Features

• Highly Integrated Single Chip

• 32-Bit ARM7DI RISC Core

– Built-In Debug and ICE Support

– Fast Interrupt Response

– Powerful Instruction Set

• 26-bit External Address Bus

– 512MB Addressable Space

• 16-bit External Data Bus

• 2KB Data/Instruction Cache

– 4 Way Set Associative

– Write Back Policy

– Flexible Modes of Operation

• 2KB Static RAM

– Expandable to 4KB without Cache

• Low Power

• High Performance

• Programmable Clock and Power Management

• Programmable Monochrome LCD Controller

– 1024 (V) × 2048 (H)

– Four Gray Shades

– Frame buffer in Main Memory

• On-Chip Interrupt Controller

– Six External Interrupts

– Seven Internal Interrupts

– ARM7DI Wake-Up

• Three UARTs - 16C450-class

– Full Modem Support on UART0

– Partial Modem Support on UART1

– IrDA-1.0/DASK Support on UART2

• IrDA/DASK IR Interface

– IrDA-1.0 (2.4 kbps to 115.2 kbps)

– DASK (2.4 kbps to 57.6 kbps)

• Three Pulse Width Modulator Channels

– PWM0 and PWM1 have 8-Bit Resolution

– PWM2 has 16-Bit Resolution

• 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