SAM9261 Atmel Corporation, SAM9261 Datasheet - Page 147
SAM9261
Manufacturer Part Number
SAM9261
Description
Manufacturer
Atmel Corporation
Datasheets
1.SAM9260.pdf
(290 pages)
2.SAM9261.pdf
(248 pages)
3.SAM9261.pdf
(749 pages)
4.SAM9261.pdf
(44 pages)
5.SAM9261.pdf
(1274 pages)
6.SAM9261.pdf
(43 pages)
Specifications of SAM9261
Flash (kbytes)
0 Kbytes
Pin Count
217
Max. Operating Frequency
240 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)
160
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
- SAM9260 PDF datasheet
- SAM9261 PDF datasheet #2
- SAM9261 PDF datasheet #3
- SAM9261 PDF datasheet #4
- SAM9261 PDF datasheet #5
- SAM9261 PDF datasheet #6
- Current page: 147 of 749
- Download datasheet (12Mb)
20.6.6
6062N–ATARM–3-Oct-11
NAND Flash Support
Figure 20-5. CompactFlash Application Example
The EBI integrates circuitry that interfaces to NAND Flash devices.
The NAND Flash logic is driven by the Static Memory Controller on the NCS3 address space.
Programming the CS3A field in the EBI_CSA Register in the Bus Matrix User Interface to the
appropriate value enables the NAND Flash logic. For details on this register, refer to the Bus
Matrix User Interface section. Access to an external NAND Flash device is then made by
accessing the address space reserved to NCS3 (i.e., between 0x40000000 and 0x4FFF FFFF).
The NAND Flash Logic drives the read and write command signals of the SMC on the NANDOE
and NANDWE signals when the NCS3 signal is active. NANDOE and NANDWE are invalidated
as soon as the transfer address fails to lie in the NCS3 address space. For details on these
waveforms, refer to the Static Memory Controller section.
The NANDOE and NANDWE signals are multiplexed with NCS6 and NCS7 signals of the Static
Memory Controller. This multiplexing is controlled in the MUX logic part of the EBI by the CS3A
bit in the in the EBI_CSA Register For details on this register, refer to the Bus Matrix User Inter-
face Section. NCS6 and NCS7 become unavailable. Performing an access within the address
space reserved to NCS6 and NCS7 (i.e., between 0x70000000 and 0x8FFF FFFF) may lead to
an unpredictable outcome.
NWR1/CFIOR
NWR3/CFIOW
NCS4/CFCS0
A25/CFRNW
NWE/CFWE
EBI
NRD/CFOE
A22/REG
CD (PIO)
D[15:0]
NWAIT
CFCE1
CFCE2
A[10:0]
DIR
/OE
/OE
AT91SAM9261
CompactFlash Connector
D[15:0]
_CD1
_CD2
A[10:0]
_REG
_OE
_WE
_IORD
_IOWR
_CE1
_CE2
_WAIT
147
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