AT91R40807-33AI Atmel, AT91R40807-33AI Datasheet - Page 111

• Manufacturer Part Number: AT91R40807-33AI
• Description: IC ARM7 MCU 176 TQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91R40807-33AI

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 33MHz
• Connectivity: EBI/EMI, UART/USART
• Peripherals: WDT
• Number Of I /o: 32
• Program Memory Type: ROMless
• Ram Size: 136K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Program Memory Size: -
• Data Converters: -

•
• NBSTOP: Number of Stop Bits
•
• MODE9: 9-bit Character Length (Code Label US_MODE9)
0 = CHRL defines character length.
1 = 9-bit character length.
• CKLO: Clock Output Select (Code Label US_CLKO)
0 = The USART does not drive the SCK pin.
1 = The USART drives the SCK pin if USCLKS[1] is 0.
1354D–ATARM–08/02
PAR: Parity Type
The interpretation of the number of stop bits depends on SYNC.
CHMODE: Channel Mode
0
0
0
0
1
1
0
0
1
1
0
0
1
1
CHMODE
NBSTOP
PAR
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
x
x
Asynchronous (SYNC = 0)
1 stop bit
1.5 stop bits
2 stop bits
Reserved
Mode Description
Normal Mode
The USART Channel operates as an 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.
Parity Type
Even Parity
Odd Parity
Parity forced to 0 (Space)
Parity forced to 1 (Mark)
No parity
Multi-drop mode
Synchronous (SYNC = 1)
1 stop bit
Reserved
2 stop bits
Reserved
US_CHMODE_REMODE_LOOPBACK
US_CHMODE_AUTOMATIC_ECHO
US_CHMODE_LOCAL_LOOPBACK
AT91X40 Series
US_PAR_MULTIDROP
US_CHMODE_NORMAL
US_NBSTOP_1_5
US_PAR_SPACE
US_PAR_EVEN
US_PAR_MARK
US_NBSTOP_1
US_NBSTOP_2
US_PAR_ODD
US_CHMODE
Code Label
US_PAR_NO
Code Label
US_NBSTOP
Code Label
US_PAR
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