at90pwm81-16se ATMEL Corporation, at90pwm81-16se Datasheet - Page 40
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at90pwm81-16se
Manufacturer Part Number
at90pwm81-16se
Description
8-bit Avr Microcontroller With 8k Bytes In- System Programmable Flash
Manufacturer
ATMEL Corporation
Datasheet
1.AT90PWM81-16SE.pdf
(323 pages)
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6.5.3
40
AT90PWM81
PLL Control and Status Register – PLLCSR
Table 6-10.
• Bit 7..3 – Res: Reserved Bits
These bits are reserved bits in the AT90PWM81 and always read as zero.
• Bit 5..2-– PLLF: PLL Factor
The PLLF bits is used to select the multiplication factor of the PLL
.
Table 6-11.
Note:
Bit
$29 ($29)
Read/Write
Initial Value
CLKPS3
PLLF3..0
1
1
1
1
1
PLLF3 is used for debug purpose (must be wired)
7-F
0-1
6
5
4
3
2
7
–
R
0
Clock Prescaler Select (Continued)
PLL multiplication factor
CLKPS2
0
1
1
1
1
6
–
R
0
N+2
8
7
6
5
4
CLKPS1
5
PLLF3
R/W
0
1
0
0
1
1
4
PLLF2
R/W
1
CLKPS0
1
0
1
0
1
3
PLLF1
R/W
0
2
PLLF0
R/W
0
PLL frequency MHz
Reserved
Reserved
Clock Division Factor
1
PLLE
R/W
0/1
64
56
48
40
32
Reserved
Reserved
Reserved
Reserved
Reserved
PLOCK
0
0
R
7734M–AVR–03/10
PLLCSR
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