attiny167-esxz ATMEL Corporation, attiny167-esxz Datasheet - Page 27

• Manufacturer Part Number: attiny167-esxz
• Description: 8-bit Avr 8-bit Microcontroller Microcontroller With 16k Bytes In-system Programmable Flash And Lin Controller
• Manufacturer: ATMEL Corporation

7728A–AUTO–07/08
Figure 4-2.
The Oscillator can operate in three different modes, each optimized for a specific frequency
range. The operating mode is selected by CKSEL3..1 fuses or by CSEL3..1 field as shown in
Table
Table 4-6.
Notes:
The CKSEL0 Fuse together with the SUT1..0 Fuses or CSEL0 together with CSUT1..0 field
select the start-up times as shown in
Table 4-7.
CKSEL0
CSEL0
CKSEL3..1
CSEL3..1
0
0
0
0
1
4-6.
100
101
110
111
1. Flash Fuse bits.
2. CLKSELR register bits.
3. This option should not be used with crystals, only with ceramic resonators.
(2)
(1)
(3)
(2)
(1)
Crystal Oscillator Connections
Crystal Oscillator Operating Modes
Start-up Times for the Crystal Oscillator Clock Selection
CSUT1..0
SUT1..0
10
00
01
11
00
(5)
Frequency Range (MHz)
(1)
(2)
8.0 - 16.0
0.4 - 0.9
0.9 - 3.0
3.0 - 8.0
Start-up Time from
Power-down/save
1K (1024) CK
1K (1024)CK
1K (1024)CK
258 CK
258 CK
Table
C2
C1
(3)
(3)
4-7.
(4)
(4)
(4)
Additional Delay
14CK + 4.1 ms
14CK + 4.1 ms
14CK + 65 ms
14CK + 65 ms
(Vcc = 5.0V)
from Reset
Recommended Range for Capacitors
C1 and C2 for Use with Crystals (pF)
XTAL2
XTAL1
GND
14CK
12 - 22
12 - 22
12 - 22
Recommended Usage
Ceramic resonator, fast
rising power
Ceramic resonator, slowly
rising power
Ceramic resonator, BOD
enabled
Ceramic resonator, fast
rising power
Ceramic resonator, slowly
rising power
–
ATtiny167
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