SAM9X35 Atmel Corporation, SAM9X35 Datasheet - Page 385
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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
- Current page: 385 of 1325
- Download datasheet (30Mb)
29.9.3
29.9.3.1
29.9.3.2
11055B–ATARM–22-Sep-11
11055B–ATARM–22-Sep-11
Write Waveforms
NWE Waveforms
NCS Waveforms
The write protocol is similar to the read protocol. It is depicted in
starts with the address setting on the memory address bus.
The NWE signal is characterized by a setup timing, a pulse width and a hold timing.
The NWE waveforms apply to all byte-write lines in Byte Write access mode: NWR0 to NWR3.
The NCS signal waveforms in write operation are not the same that those applied in read opera-
tions, but are separately defined:
Figure 29-12. Write Cycle
1. NWE_SETUP: the NWE setup time is defined as the setup of address and data before
2. NWE_PULSE: The NWE pulse length is the time between NWE falling edge and NWE
3. NWE_HOLD: The NWE hold time is defined as the hold time of address and data after
1. NCS_WR_SETUP: the NCS setup time is defined as the setup time of address before
2. NCS_WR_PULSE: the NCS pulse length is the time between NCS falling edge and
3. NCS_WR_HOLD: the NCS hold time is defined as the hold time of address after the
NBS0, NBS1,
NBS2, NBS3,
A0, A1
the NWE falling edge;
rising edge;
the NWE rising edge.
the NCS falling edge.
NCS rising edge;
NCS rising edge.
A
[25:2]
MCK
NWE
NCS
NCS_WR_SETUP
NWE_SETUP
NCS_WR_PULSE
NWE_CYCLE
NWE_PULSE
NWE_HOLD
Figure
NCS_WR_HOLD
29-12. The write cycle
SAM9X35
SAM9X35
385
385
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