SAM9G15 Atmel Corporation, SAM9G15 Datasheet - Page 893
SAM9G15
Manufacturer Part Number
SAM9G15
Description
Manufacturer
Atmel Corporation
Datasheets
1.SAM9261.pdf
(248 pages)
2.SAM9261.pdf
(1274 pages)
3.SAM9261.pdf
(43 pages)
4.SAM9G15.pdf
(1211 pages)
5.SAM9G15.pdf
(45 pages)
Specifications of SAM9G15
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
6
Lin
4
Ssc
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
DDR2/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
- SAM9261 PDF datasheet #2
- SAM9261 PDF datasheet #3
- SAM9G15 PDF datasheet #4
- SAM9G15 PDF datasheet #5
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Figure 40-5. Receiver Ready
40.5.2.4
Figure 40-6. Receiver Overrun
40.5.2.5
Figure 40-7. Parity Error
40.5.2.6
11052C–ATARM–21-Nov-11
RXRDY
URXD
RXRDY
OVRE
URXD
RXRDY
URXD
PARE
S
S
Receiver Overrun
Parity Error
Receiver Framing Error
D0
D0
S
D1
D1
D0
D2
D2
If UART_RHR has not been read by the software (or the Peripheral Data Controller or DMA
Controller) since the last transfer, the RXRDY bit is still set and a new character is received, the
OVRE status bit in UART_SR is set. OVRE is cleared when the software writes the control regis-
ter UART_CR with the bit RSTSTA (Reset Status) at 1.
Each time a character is received, the receiver calculates the parity of the received data bits, in
accordance with the field PAR in UART_MR. It then compares the result with the received parity
bit. If different, the parity error bit PARE in UART_SR is set at the same time the RXRDY is set.
The parity bit is cleared when the control register UART_CR is written with the bit RSTSTA
(Reset Status) at 1. If a new character is received before the reset status command is written,
the PARE bit remains at 1.
When a start bit is detected, it generates a character reception when all the data bits have been
sampled. The stop bit is also sampled and when it is detected at 0, the FRAME (Framing Error)
bit in UART_SR is set at the same time the RXRDY bit is set. The FRAME bit remains high until
the control register UART_CR is written with the bit RSTSTA at 1.
D1
D3
D3
D2
D4
D4
D3
D5
D5
D4
D6
D6
D5
D7
D7
D6
P
Wrong Parity Bit
P
D7
stop
P
S
S
stop
D0
Read UART_RHR
D0
D1
D1
D2
D2
D3
RSTSTA
D3
D4
D4
D5
D5
D6
D6
D7
SAM9G15
D7
P
P
stop
RSTSTA
893
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