AT91SAM9G45-EKES Atmel, AT91SAM9G45-EKES Datasheet - Page 563

• Manufacturer Part Number: AT91SAM9G45-EKES
• Description: KIT EVAL FOR AT91SAM9G45
• Manufacturer: Atmel
• Series: AT91SAM Smart ARMr
• Type: MCUr

Specifications of AT91SAM9G45-EKES

• Contents: Board
• Processor To Be Evaluated: SAM9G45
• Data Bus Width: 32 bit
• Interface Type: I2C, SPI, UART
• Maximum Operating Temperature: + 50 C
• Minimum Operating Temperature: - 10 C
• Operating Supply Voltage: 1.8 V to 3.3 V
• For Use With/related Products: AT91SAM9G45
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q4626953

33.6
33.6.1
33.6.2
6438F–ATARM–21-Jun-10
Product Dependencies
I/O Lines
Power Management
The pins used for interfacing the USART may be multiplexed with the PIO lines. The program-
mer must first program the PIO controller to assign the desired USART pins to their peripheral
function. If I/O lines of the USART are not used by the application, they can be used for other
purposes by the PIO Controller.
To prevent the TXD line from falling when the USART is disabled, the use of an internal pull up
is mandatory. If the hardware handshaking feature is used, the internal pull up on TXD must
also be enabled.
Table 33-3.
The USART is not continuously clocked. The programmer must first enable the USART Clock in
the Power Management Controller (PMC) before using the USART. However, if the application
does not require USART operations, the USART clock can be stopped when not needed and be
restarted later. In this case, the USART will resume its operations where it left off.
Configuring the USART does not require the USART clock to be enabled.
Instance
USART0
USART0
USART0
USART0
USART0
USART1
USART1
USART1
USART1
USART1
USART2
USART2
USART2
USART2
USART2
USART3
USART3
USART3
USART3
USART3
I/O Lines
Signal
RXD0
RXD1
RXD2
RXD3
CTS0
RTS0
SCK0
TXD0
CTS1
RTS1
SCK1
TXD1
CTS2
RTS2
SCK2
TXD2
CTS3
RTS3
SCK3
TXD3
I/O Line
PD17
PC11
PB15
PB17
PB18
PB16
PB19
PD16
PD29
PD30
AT91SAM9G45
PA24
PA23
PA22
PB5
PB4
PC9
PB7
PB6
PB9
PB8
Peripheral
B
B
A
B
A
A
A
A
B
A
B
B
A
B
A
B
B
A
B
A
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