SAM9X35 Atmel Corporation, SAM9X35 Datasheet - Page 407
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SAM9X35
Manufacturer Part Number
SAM9X35
Description
Manufacturer
Atmel Corporation
Datasheets
1.SAM9261.pdf
(248 pages)
2.SAM9X25.pdf
(45 pages)
3.SAM9X25.pdf
(1145 pages)
4.SAM9X25.pdf
(45 pages)
5.SAM9X25.pdf
(1325 pages)
Specifications of SAM9X35
Flash (kbytes)
0 Kbytes
Pin Count
217
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
Can
2
Lin
4
Ssc
1
Ethernet
1
Sd / Emmc
2
Graphic Lcd
Yes
Video Decoder
No
Camera Interface
No
Adc Channels
12
Adc Resolution (bits)
10
Adc Speed (ksps)
440
Resistive Touch Screen
Yes
Temp. Sensor
No
Crypto Engine
No
Sram (kbytes)
32
Self Program Memory
NO
External Bus Interface
1
Dram Memory
DDR/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
- SAM9261 PDF datasheet
- SAM9X25 PDF datasheet #2
- SAM9X25 PDF datasheet #3
- SAM9X25 PDF datasheet #4
- SAM9X25 PDF datasheet #5
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29.14.2
29.14.3
29.14.4
11055B–ATARM–22-Sep-11
11055B–ATARM–22-Sep-11
Byte Access Type in Page Mode
Page Mode Restriction
Sequential and Non-sequential Accesses
timings are identical. The pulse length of the first access to the page is defined with the
NCS_RD_PULSE field of the SMC_PULSE register. The pulse length of subsequent accesses
within the page are defined using the NRD_PULSE parameter.
In page mode, the programming of the read timings is described in
Table 29-7.
The SMC does not check the coherency of timings. It will always apply the NCS_RD_PULSE
timings as page access timing (t
the programmed value for t
The Byte Access Type configuration remains active in page mode. For 16-bit or 32-bit page
mode devices that require byte selection signals, configure the BAT field of the
SMC_REGISTER to 0 (byte select access type).
The page mode is not compatible with the use of the NWAIT signal. Using the page mode and
the NWAIT signal may lead to unpredictable behavior.
If the chip select and the MSB of addresses as defined in
rent access lies in the same page as the previous one, and no page break occurs.
Using this information, all data within the same page, sequential or not sequential, are accessed
with a minimum access time (t
page mode, with 8-byte pages. Access to D1 causes a page access with a long access time
(t
access time (t
If the MSB of addresses are different, the SMC performs the access of a new page. In the same
way, if the chip select is different from the previous access, a page break occurs. If two sequen-
tial accesses are made to the page mode memory, but separated by an other internal or external
peripheral access, a page break occurs on the second access because the chip select of the
device was deasserted between both accesses.
Parameter
READ_MODE
NCS_RD_SETUP
NCS_RD_PULSE
NRD_SETUP
NRD_PULSE
NRD_CYCLE
pa
). Accesses to D3 and D7, though they are not sequential accesses, only require a short
sa
Programming of Read Timings in Page Mode
).
Value
‘x’
‘x’
t
‘x’
t
‘x’
pa
sa
pa
is shorter than the programmed value for t
sa
pa
).
) and the NRD_PULSE for accesses to the page (t
Figure 29-35
Definition
No impact
No impact
Access time of first access to the page
No impact
Access time of subsequent accesses in the page
No impact
illustrates access to an 8-bit memory device in
Table 29-6
Table
are identical, then the cur-
sa
.
29-7:
SAM9X35
SAM9X35
sa
), even if
407
407
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