SAM9G10 Atmel Corporation, SAM9G10 Datasheet - Page 717

• Manufacturer Part Number: SAM9G10
• Manufacturer: Atmel Corporation

Specifications of SAM9G10

• Flash (kbytes): 0 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 266 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: 4
• Ssc: 3
• Sd / Emmc: 1
• Graphic Lcd: Yes
• Video Decoder: No
• Camera Interface: No
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 16
• 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): 1.08 to 1.32
• Fpu: No
• Mpu / Mmu: No/Yes
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

39.10 Peripheral Timings
39.10.1
39.10.1.1
39.10.1.2
6462B–ATARM–6-Sep-11
Master Write Mode
Master Read Mode
Slave Read Mode
Slave Write Mode
SPI
Maximum SPI Frequency
Timing Conditions
The following formulas give maximum SPI frequency in Master read and write modes and in
Slave read and write modes.
Timings are given assuming a capacitance load on MISO, SPCK and MOSI.
Table 39-27. Capacitance Load for MISO, SPCK and MOSI
IO Supply
3.3V
1.8V
The SPI is only sending data to a slave device such as an LCD, for example. The limit is
given by SPI
speed, the max SPI frequency is the one from the pad.
T
DataFlash (AT45DB642D), T
In the formula above, F
In slave mode, SPCK is the input clock for the SPI. The max SPCK frequency is given by
setup and hold timings SPI
the pad limit, the limit in slave read mode is given by SPCK pad.
For 3.3V I/O domain and SPI6, F
before sampling data.
f
valid
SPCK
f
SPCK
is the slave time response to output data after detecting an SPCK edge. For Atmel SPI
Max
Max
=
2
=
(or SPI
--------------------------------------------------------
SPI
40 pF
20 pF
--------------------------------------------------------------------------------------- -
2x S ( PI
MAX
Corner
0
(
orSPI
5
) timing. Since it gives a maximum frequency above the maximum pad
6max
SPCK
1
3
(
)
Max = 33.0 MHz @ VDDIO = 3.3V.
7
orSPI
/SPI
+
valid
T
1
valid
(or T
8
SPCK
(or SPI
9max
Max = 25 MHz. T
v
) is 12 ns Max.
)
+
10
T
/SPI
setup
11
)
). Since this gives a frequency well above
setup
is the setup time from the master
SAM9G10
719