SAM9G20 Atmel Corporation, SAM9G20 Datasheet - Page 802

• 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

44.2
44.2.1
44.2.1.1
44.2.2
44.2.2.1
44.2.2.2
44.2.3
44.2.3.1
802
AT91SAM9G20 Errata - Revision “A” Parts
AT91SAM9G20
Analog-to-digital Converter (ADC)
Boot ROM
Error Corrected Code Controller (ECC)
ADC: Sleep Mode
Boot ROM: ROM Code, Internal RC Usage with SAM-BA Boot through USB
Boot ROM: MCCK Remains Active
ECC: 1-bit ECC per 512 Words
Refer to
If Sleep mode is activated while there is no activity (no conversion is being performed), it will
take effect only after a conversion occurs.
To activate sleep mode as soon as possible, it is recommended to write successively, ADC
Mode Register (SLEEP) then ADC Control Register (START bit field); to start an analog-to-digi-
tal conversion, in order put ADC into sleep mode at the end of this conversion.
Booting from the internal RC oscillator (OSCSEL = 0) prevents using SAM-BA Boot through the
USB device interface.
Use SAM-BA Boot through DBGU (or AT91SAM-ICE JTAG-ICE interface with SAM-BA GUI) if
the internal RC oscillator must be used.
Boot from the 32 kHz external oscillator (OSCEL =1) to use SAM-BA Boot through the USB.
The ROM boot sequence is as follows;
MCCK is not disabled after SDCard boot program. This does not affect the TWI boot program
but must be considered by any applications using SAM-BA boot.
None.
1-bit ECC per 512 words is not functional.
Perform the ECC computation by software.
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround
– DataFlash on SPI0 NPCS0
– DataFlash on SPI0 NPCS1
– NAND FLash
– SDCard
– TWI
– SAM-BA Boot
Section 44.1 “Marking” on page
801.
6384E–ATARM–05-Feb-10