Description

The AT91S051 is an electronic component model in the IC chips category. It features the ARM926EJ-S based SAM9G45, which combines user interface functionality and high data rate connectivity. This includes an LCD controller, resistive touch-screen, camera interface, audio, Ethernet 10/100, and high-speed USB and SDIO. With a 400 MHz processor and multiple 100+ Mbps data rate peripherals, the AT91S051 provides the performance and bandwidth for adequate user experience in networking or local storage media.

Specifications and features

• 400 MHz ARM926EJ-S™ ARM® Thumb® Processor with 32 Kbytes Data Cache, 32 Kbytes Instruction Cache, MMU
• Memories: DDR2 Controller 4-bank DDR2/LPDDR, SDRAM/LPSDR, External Bus Interface supporting 4-bank DDR2/LPDDR, SDRAM/LPSDR, Static Memories, CompactFlash, SLC NAND Flash with ECC, 64-Kbyte internal SRAM, 64-Kbyte internal ROM with bootstrap routine
• Peripherals: LCD Controller supporting STN and TFT displays up to 1280*860, ITU-R BT. 601/656 Image Sensor Interface, USB Device High Speed, USB Host High Speed and USB Host Full Speed with On-Chip Transceiver, 10/100 Mbps Ethernet MAC Controller, Two High-Speed Memory Card Hosts (SDIO, SDCard, MMC), AC97 controller, Two Master/Slave Serial Peripheral Interfaces, Two Three-channel 16-bit Timer/Counters, Two Synchronous Serial Controllers (I2S mode), Four-channel 16-bit PWM Controller, Two Two-wire Interfaces, Four USARTs with ISO7816, IrDA, Manchester and SPI modes, 8-channel 10-bit ADC with 4-wire Touch Screen support, Write Protected Registers
• System: 133 MHz twelve 32-bit layer AHB Bus Matrix, 37 DMA Channels, Boot from NAND Flash, SDCard, DataFlash® or serial DataFlash, Reset Controller with on-chip Power-on Reset, Selectable 32768 Hz Low-power and 12 MHz Crystal Oscillators, Internal Low-power 32 kHz RC Oscillator, One PLL for the system and one 480 MHz PLL optimized for USB High Speed, Two Programmable External Clock Signals, Advanced Interrupt Controller and Debug Unit, Periodic Interval Timer, Watchdog Timer, Real Time Timer and Real Time Clock
• I/O: Five 32-bit Parallel Input/Output Controllers, 160 Programmable I/O Lines Multiplexed with up to Two Peripheral I/Os with Schmitt trigger input
• Package: 324-ball TFBGA, pitch 0.8 mm

Application Scenarios

The AT91S051 is commonly used in applications that require a combination of user interface functionality and high data rate connectivity. Some examples include:

• LCD displays
• Touch-screen devices
• Camera interfaces
• Audio systems
• Ethernet connections
• USB and SDIO devices

Comparison

Advantages:

• Powerful 400 MHz ARM926EJ-S processor
• Supports various memory types and external interfaces
• Multiple peripherals available for different needs
• Provides high-speed data rate connectivity
• Suitable for networking and local storage applications

Disadvantages:

• May not be suitable for applications with low-power requirements
• Complex configuration and setup process
• May require additional components for specific functionalities