AT91SAM7A1-AU Atmel, AT91SAM7A1-AU Datasheet - Page 63

• 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: -

11.1.1
Name:
Access:
Address:
• CLKEKEY[15:0]: Key for Write Access into the CM_CE Register
Any write in the CM_CD register bits will be effective only if CLKEKEY[15:0] is equal to 0x2305.
11.1.2
Name:
Access:
Address:
• CLKDKEY[15:0]: Key for Write Access into the CM_CD Register
Any write in the CM_CD register bits will be effective only if CLKDKEY[15:0] is equal to 0x1807.
6048B–ATARM–29-Jun-06
RTCKEN
RTCKEN
31
23
15
31
23
15
–
7
–
7
CM Clock Enable Register
CM Clock Disable Register
CM_CE
Write-only
0xFFFEC000
CM_CD
Write-only
0xFFFEC004
RTCSEL
RTCSEL
30
22
14
30
22
14
–
6
–
6
DIVSLCT
DIVSLCT
29
21
13
29
21
13
–
5
–
5
28
20
12
28
20
12
–
4
–
–
4
–
CLKDKEY[15:8]
CLKEKEY[15:8]
CLKEKEY[7:0]
CLKDKEY[7:0]
LFSLCT
LFSLCT
27
19
11
27
19
11
–
3
–
3
PLLSLCT
PLLSLCT
26
18
10
26
18
10
–
2
–
2
AT91SAM7A1
25
17
25
17
9
–
1
–
9
–
1
–
24
16
24
16
8
–
0
–
8
–
0
–
63