SAM9G25 Atmel Corporation, SAM9G25 Datasheet - Page 328

• Manufacturer Part Number: SAM9G25
• Manufacturer: Atmel Corporation

Specifications of SAM9G25

• Flash (kbytes): 0 Kbytes
• Pin Count: 247
• Max. Operating Frequency: 400 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 105
• Ext Interrupts: 105
• Usb Transceiver: 3
• Usb Speed: Hi-Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 3
• Uart: 7
• Lin: 4
• Ssc: 1
• Ethernet: 1
• Sd / Emmc: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: Yes
• Adc Channels: 12
• Adc Resolution (bits): 10
• Adc Speed (ksps): 440
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: DDR2/LPDDR, SDRAM/LPSDR
• 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
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

26.5.3.4
328
328
SAM9G25
SAM9G25
Power supplies
and
The product embeds a dual power supply for EBI. VDDNF for NAND Flash signals and VDDIOM
for others. This allows to use an 1.8V or 3.3V NAND Flash independently of SDRAM power
supply.
A switch, NFD0_ON_D16, enables the user to select NAND Flash path on D0-D15 or D16-D32
depending on memory power supplies. This switch is located in the register EBICSA in the Bus
Matrix user interface.
In the following example the NAND Flash and the external RAM (DDR2 or LP-DDR or 16-bit LP-
SDR) are in the same power supply range, (NFD0_ON_D16 = default).
– A[14] <=> DELAY6[27:24]
– A[15] <=> DELAY6[31:28]
– A[16] <=> DELAY7[3:0]
– A[17] <=> DELAY7[7:4]
– A[18] <=> DELAY7[11:8]
– A19 <=> DELAY7[15:12]
– A21 <=> PD[2] <=> DELAY7[23:20]
– A22 <=> PD[3] <=> DELAY7[27:24]
EBI
EBI
D[31:16]
D[15:0]
D[15:0]
A[22:21]
A[22:21]
D[31:16]
16-bit LP-SDR (1.8V)
D[15:0]
ALE
CLE
D[15:0]
ALE
CLE
D[15:0]
D[15:0]
32bit SDRAM (3.3V)
NAND Flash (1.8V)
NAND Flash (3.3V)
LP-DDR or
DDR2 or
11032A–ATARM–27-Jul-11
11032A–ATARM–27-Jul-11