attiny25v ATMEL Corporation, attiny25v Datasheet - Page 34

• Manufacturer Part Number: attiny25v
• Description: Microcontroller With 2/4/8k Bytes In-system Programmable Flash
• Manufacturer: ATMEL Corporation

34
ATtiny25/45/85
device at the present operating conditions. The device is shipped with the CKDIV8 Fuse
programmed.
Table 6-14.
Note:
CLKPS3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
The prescaler is disabled in ATtiny15 compatibility mode and neither writing to CLKPR, nor pro-
gramming the CKDIV8 fuse has any effect on the system clock (which will always be 1.6 MHz).
Clock Prescaler Select
CLKPS2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
CLKPS1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
CLKPS0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Clock Division Factor
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
128
256
16
32
64
1
2
4
8
2586K–AVR–01/08