AT91SAM9G20B-CFU【PDF 1/42 页】IC MCU ARM9 247-LFBGA

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Sheet目录1904

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NOTE: This is a summary document.

The complete document is available on

the Atmel website at www.atmel.com.

Features

Incorporates the ARM926EJ-S ARM Thumb Processor

– 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 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 Double 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

– Mode for General Purpose 2-wire UART Serial Communication

AT91 ARM

Thumb

Microcontrollers

AT91SAM9G20

Summary

6384DS–ATARM–13-Jan-10

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