AT91SAM7A1-AU Atmel, AT91SAM7A1-AU Datasheet - Page 169

• Manufacturer Part Number: AT91SAM7A1-AU
• Description: IC ARM7 MCU 32BIT ROMLESS144LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7A1-AU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 40MHz
• Connectivity: CAN, EBI/EMI, SPI, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 49
• Program Memory Type: ROMless
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 144-LQFP
• For Use With: AT91SAM7A1-EK - BOARD EVAL FOR AT91SAM7A1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Program Memory Size: -

• PAR[2:0]: Parity Type
• NBSTOP[1:0]: Number of Stop Bits
The interpretation of the number of stop bits depends on SYNC.
• CHMODE[1:0]: Channel Mode
• MODE9: 9-bit Character Length
0: CHRL defines character length.
1: 9-bit character length.
• CLKO: Clock Output Select
0: The USART does not drive the SCK pin.
1: The USART drives the SCK pin if CLKS[1] is 0.
6048B–ATARM–29-Jun-06
0
0
1
1
0
0
1
1
CHMODE[1:0]
NBSTOP[1:0]
0
0
0
0
1
1
0
1
0
1
0
1
0
1
Mode Description
Normal Mode: The USART Channel operates as a Rx/Tx USART
Automatic Echo: Receiver Data Input is connected to TXD pin
Local Loopback: Transmitter Output Signal is connected to Receiver Input Signal
Remote Loopback: RXD pin is internally connected to TXD pin
PAR[2:0]
Asynchronous (SYNC = 0)
0
0
1
1
0
1
1.5 stop bits
2 stop bits
Reserved
1 stop bit
0
1
0
1
x
x
Synchronous (SYNC = 1)
Parity forced to 0 (Space)
Parity forced to 1 (Mark)
Multidrop mode
Parity Type
Even Parity
2 stop bits
Odd Parity
Reserved
Reserved
1 stop bit
No parity
AT91SAM7A1
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