AT91R40807-33AI Atmel, AT91R40807-33AI Datasheet - Page 121

• 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: -

USART Transmit Pointer Register
Name:
Access Type:Read/Write
Reset Value: 0
Offset:
• TXPTR: Transmit Pointer
TXPTR must be loaded with the address of the transmit buffer.
USART Transmit Counter Register
Name:
Access Type:Read/Write
Reset Value: 0
Offset:
• TXCTR: Transmit Counter
TXCTR must be loaded with the size of the transmit buffer.
0: Stop Peripheral Data Transfer dedicated to the transmitter.
1 - 65535: Start Peripheral Data transfer if TXRDY is active.
1354D–ATARM–08/02
31
23
15
31
23
15
–
–
7
7
US_TPR
0x38
US_TCR
0x3C
30
22
14
30
22
14
6
–
–
6
29
21
13
29
21
13
5
–
–
5
28
20
12
28
20
12
–
–
4
4
TXCTR
TXCTR
TXPTR
TXPTR
TXPTR
TXPTR
27
19
27
19
11
11
–
–
3
3
26
18
10
26
18
10
2
–
–
2
AT91X40 Series
25
17
25
17
9
1
–
–
9
1
24
16
24
16
–
–
8
0
8
0
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