SAM9G20 Atmel Corporation, SAM9G20 Datasheet - Page 190

• Manufacturer Part Number: SAM9G20
• Manufacturer: Atmel Corporation

Specifications of SAM9G20

• Flash (kbytes): 0 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 400 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 96
• Ext Interrupts: 96
• Usb Transceiver: 3
• Usb Speed: Full Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 1
• Uart: 7
• Ssc: 1
• Ethernet: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: Yes
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 95
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: sdram
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 0.9 to 1.1
• Fpu: No
• Mpu / Mmu: No/Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

Signal Descriptions
A.1
A-2
Signal properties and requirements
To ensure ease of integration of the ARM926EJ-S processor into embedded
applications, and to simplify synthesis flow, the following design techniques have been
used:
•
•
•
These techniques simplify the definition of the top-level ARM926EJ-S processor
signals because all outputs change from the rising edge and all inputs are sampled with
the rising edge of the clock. In addition, all signals are either input or output only.
Bidirectional signals are not used.
You must use external logic to synchronize asynchronous signals (for example interrupt
sources) before applying them to the ARM926EJ-S processor.
Copyright © 2001-2003 ARM Limited. All rights reserved.
a single rising edge clock times all activity
all signals and buses are unidirectional
all inputs are required to be synchronous to the single clock.
Note
ARM DDI0198D