AT91M40800-33AI Atmel, AT91M40800-33AI Datasheet - Page 92

• Manufacturer Part Number: AT91M40800-33AI
• Description: IC ARM7 MCU 100 TQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91M40800-33AI

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

WD Control Register
Name:
Access:
Offset:
• RSTKEY: Restart Key (Code Label WD_RSTKEY)
0xC071 = Watch Dog counter is restarted.
Other value = No effect.
WD Status Register
Name:
Access:
Reset Value: 0
Offset:
• WDOVF: Watchdog Overflow (Code Label WD_WDOVF)
0 = No watchdog overflow.
1 = A watchdog overflow has occurred since the last restart of the watchdog counter or since internal or external reset.
92
31
23
15
31
23
15
–
–
–
–
–
–
7
7
AT91X40 Series
WD_CR
Write Only
0x08
WD_SR
Read Only
0x0C
30
22
14
30
22
14
–
–
6
–
–
–
6
–
29
21
13
29
21
13
–
–
5
–
–
–
5
–
28
20
12
28
20
12
–
–
–
–
–
–
4
4
RSTKEY
RSTKEY
27
19
27
19
11
11
–
–
–
–
–
–
3
3
26
18
10
26
18
10
–
–
2
–
–
–
2
–
25
17
25
17
–
–
9
1
–
–
9
–
1
–
1354D–ATARM–08/02
WDOVF
24
16
24
16
–
–
–
–
–
8
0
8
0