AT91SAM7A1-AU Atmel, AT91SAM7A1-AU Datasheet - Page 95

• 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: -

14.5.4
Name:
Access:
Address:
• ALARM: Alarm Interrupt
0: No alarm occurred.
1: An alarm occurred since last clear of the status register.
• SECSEN: Seconds Counter Enabled Interrupt
0: No seconds counter enabled interrupt.
1: A seconds counter enabled interrupt occurred since last clear of the status register.
• SECSDIS: Seconds Counter Disabled Interrupt
0: No seconds counter disabled interrupt.
1: A seconds counter disabled interrupt occurred since last clear of the status register.
• ALARMEN: Alarm Enabled Interrupt
0: No alarm enabled interrupt.
1: An alarm enabled interrupt occurred since last clear of the status register.
• ALARMDIS: Alarm Disabled Interrupt
0: No alarm disabled interrupt.
1: An alarm disabled interrupt occurred since last clear of the status register.
• WSEC: Write Second
0: No effect.
1: A write is occurring on the seconds counter register.
• SECSENS: Seconds Counter Enable Status
0: Seconds counter is disabled.
1: Seconds counter is enabled.
• ALARMENS: Alarm Enable Status
0: Alarm is disabled.
1: Alarm is enabled.
6048B–ATARM–29-Jun-06
31
23
15
–
–
–
7
–
WT Status Register
WT_SR
Read-only
0xFFFA4070
30
22
14
–
–
–
6
–
WSEC
29
21
13
–
–
–
5
ALARMDIS
28
20
12
–
–
–
4
ALARMEN
27
19
11
–
–
–
3
SECSDIS
26
18
10
–
–
–
2
ALARMENS
SECSEN
AT91SAM7A1
25
17
–
–
9
1
SECENS
ALARM
24
16
–
–
8
0
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