SAM9X35 Atmel Corporation, SAM9X35 Datasheet - Page 819
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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- Download datasheet (26Mb)
Figure 39-23. Timeguard Operations
39.7.3.11
11054A–ATARM–27-Jul-11
11054A–ATARM–27-Jul-11
Baud Rate
TXEMPTY
US_THR
TXRDY
Clock
Write
TXD
Receiver Time-out
Start
Bit
D0
D1
Table 39-10
in relation to the function of the Baud Rate.
Table 39-10. Maximum Timeguard Length Depending on Baud Rate
The Receiver Time-out provides support in handling variable-length frames. This feature detects
an idle condition on the RXD line. When a time-out is detected, the bit TIMEOUT in the Channel
Status Register (US_CSR) rises and can generate an interrupt, thus indicating to the driver an
end of frame.
The time-out delay period (during which the receiver waits for a new character) is programmed
in the TO field of the Receiver Time-out Register (US_RTOR). If the TO field is programmed to
0, the Receiver Time-out is disabled and no time-out is detected. The TIMEOUT bit in US_CSR
remains to 0. Otherwise, the receiver loads a 16-bit counter with the value programmed in TO.
This counter is decremented at each bit period and reloaded each time a new character is
received. If the counter reaches 0, the TIMEOUT bit in the Status Register rises. Then, the user
can either:
D2
• Stop the counter clock until a new character is received. This is performed by writing the
Control Register (US_CR) with the STTTO (Start Time-out) bit to 1. In this case, the idle state
D3
D4
D5
Baud Rate
115200
indicates the maximum length of a timeguard period that the transmitter can handle
Bit/sec
14400
19200
28800
33400
56000
57600
1 200
9 600
D6
D7
Parity
Bit
Stop
Bit
TG = 4
Start
Bit
D0
Bit time
69.4
52.1
34.7
29.9
17.9
17.4
833
104
8.7
μs
D1
D2
D3
D4
D5
D6
D7
Parity
Bit
Stop
Bit
Timeguard
212.50
26.56
17.71
13.28
8.85
7.63
4.55
4.43
2.21
ms
SAM9X25
SAM9X25
TG = 4
819
819
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