AT91SAM9G45-CU-999 Atmel, AT91SAM9G45-CU-999 Datasheet - Page 325

• Manufacturer Part Number: AT91SAM9G45-CU-999
• Description: IC MCU ARM9 APMC 324TFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM9G45-CU-999

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 400MHz
• Connectivity: EBI/EMI, Ethernet, I²C, IrDA, MMC, SPI, SSC, UART/USART, USB
• Peripherals: AC'97, DMA, I²S, LCD, POR, PWM, WDT
• Number Of I /o: 160
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: ROM
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 0.9 V ~ 1.1 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 324-TFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed

25.11.13 PMC Programmable Clock Register
Register Name:PMC_PCKx
Address:
Access Type:Read/Write
• CSS: Master Clock Selection
• PRES: Programmable Clock Prescaler
• SLCKMCK: Slow Clock or Master Clock Selection
0 = Slow clock is selected
1 = Master clock is selected
To select between Slow Clock and Master Clock, the CSS field must be programmed to ‘00’.
6438F–ATARM–21-Jun-10
31
23
15
–
–
–
7
–
0xFFFFFC40
0
0
0
0
1
1
1
1
0
0
1
1
30
22
14
–
–
–
6
–
CSS
29
21
13
–
–
–
5
–
PRES
0
0
1
1
0
0
1
1
0
1
0
1
28
20
12
–
–
–
4
Clock Source Selection
Slow Clock or Master Clock may be selected depending on
SLCKMCK field.
Main Clock is selected.
PLLACK/PLLADIV2 is selected.
UPLLCK is selected.
PRES
27
19
11
–
–
–
3
0
1
0
1
0
1
0
1
26
18
10
–
–
–
2
Programmable Clock
Selected clock
Selected clock divided by 2
Selected clock divided by 4
Selected clock divided by 8
Selected clock divided by 16
Selected clock divided by 32
Selected clock divided by 64
Reserved
AT91SAM9G45
25
17
–
–
–
9
1
CSS
SLCKMCK
24
16
–
–
8
0
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