Features
• Incorporates the ARM926EJ-S™ ARM® Thumb® Processor
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– DSP Instruction Extensions, ARM Jazelle® Technology for Java® Acceleration
– 32-KByte Data Cache, 32-KByte Instruction Cache, Write Buffer
– CPU Frequency 400 MHz
– Memory Management Unit
– EmbeddedICE™, Debug Communication Channel Support
Additional Embedded Memories
– One 64-KByte Internal ROM, Single-cycle Access at Maximum Matrix Speed
– Two 16-KByte Internal SRAM, Single-cycle Access at Maximum Matrix Speed
External Bus Interface (EBI)
– Supports SDRAM, Static Memory, ECC-enabled SLC NAND Flash and
CompactFlash®
USB 2.0 Full Speed (12 Mbits per second) Device Port
– On-chip Transceiver, 2,432-byte Configurable Integrated DPRAM
USB 2.0 Full Speed (12 Mbits per second) Host and Dual Port
– Single or Dual On-chip Transceivers
– Integrated FIFOs and Dedicated DMA Channels
Ethernet MAC 10/100 Base T
– Media Independent Interface or Reduced Media Independent Interface
– 128-byte FIFOs and Dedicated DMA Channels for Receive and Transmit
Image Sensor Interface
– ITU-R BT. 601/656 External Interface, Programmable Frame Capture Rate
– 12-bit Data Interface for Support of High Sensibility Sensors
– SAV and EAV Synchronization, Preview Path with Scaler, YCbCr Format
Bus Matrix
– Six 32-bit-layer Matrix
– Boot Mode Select Option, Remap Command
Fully-featured System Controller, including
– Reset Controller, Shutdown Controller
– Four 32-bit Battery Backup Registers for a Total of 16 Bytes
– Clock Generator and Power Management Controller
– Advanced Interrupt Controller and Debug Unit
– Periodic Interval Timer, Watchdog Timer and Real-time Timer
Reset Controller (RSTC)
– Based on a Power-on Reset Cell, Reset Source Identification and Reset Output
Control
Clock Generator (CKGR)
– Selectable 32,768 Hz Low-power Oscillator or Internal Low Power RC Oscillator on
Battery Backup Power Supply, Providing a Permanent Slow Clock
– 3 to 20 MHz On-chip Oscillator, One up to 800 MHz PLL and One up to 100 MHz PLL
Power Management Controller (PMC)
– Very Slow Clock Operating Mode, Software Programmable Power Optimization
Capabilities
– Two Programmable External Clock Signals
Advanced Interrupt Controller (AIC)
– Individually Maskable, Eight-level Priority, Vectored Interrupt Sources
– Three External Interrupt Sources and One Fast Interrupt Source, Spurious
Interrupt Protected
Debug Unit (DBGU)
– 2-wire UART and Support for Debug Communication Channel, Programmable ICE
Access Prevention
AT91 ARM
Thumb
Microcontrollers
AT91SAM9G20
6384E–ATARM–05-Feb-10
