AT91SAM7A1-AU Atmel, AT91SAM7A1-AU Datasheet - Page 175

• 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: -

18.9.23
Name:
Access:
Offset:
• RXCHR[8:0]: Received Character
Last character received if RXRDY is set. When the number of data bits is less than 9, the bits are right aligned.
18.9.24
Name:
Access:
Offset:
• TXCHR[8:0]: Character to be Transmitted
Next character to be transmitted after the current character if TXRDY is not set. When the number of data bits is less than
9, the bits are right aligned.
6048B–ATARM–29-Jun-06
31
23
15
31
23
15
–
–
–
7
–
–
–
7
USART Receiver Holding Register
USART Transmit Holding Register
US_RHR
Read-only
0x080
US_THR
Write-only
0x084
30
22
14
30
22
14
–
–
–
6
–
–
–
6
29
21
13
29
21
13
–
–
–
5
–
–
–
5
28
20
12
28
20
12
–
–
–
4
–
–
–
4
RXCHR[7:0]
TXCHR[7:0]
27
19
11
27
19
11
–
–
–
3
–
–
–
3
26
18
10
26
18
10
–
–
–
2
–
–
–
2
AT91SAM7A1
25
17
25
17
–
–
9
–
1
–
–
9
–
1
RXCHR[8]
TXCHR[8]
24
16
24
16
–
–
8
0
–
–
8
0
175