ATtiny167 Automotive Atmel Corporation, ATtiny167 Automotive Datasheet - Page 29

• Manufacturer Part Number: ATtiny167 Automotive
• Manufacturer: Atmel Corporation

Specifications of ATtiny167 Automotive

• Flash (kbytes): 16 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 8
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 16
• Ext Interrupts: 16
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Lin: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 150
• I/o Supply Class: 2.7 to 5.5
• Operating Voltage (vcc): 2.7 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 3
• Input Capture Channels: 1
• Pwm Channels: 9
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

4.2.5
7728G–AVR–06/10
Low-frequency Crystal Oscillator
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.
Notes:
To use a 32.768 kHz watch crystal as the clock source for the device, the low-frequency crys-
tal oscillator must be selected by setting CKSEL fuses or CSEL field as shown in
page
Crystal Oscillator Application Note for details on oscillator operation and how to choose appro-
priate values for C1 and C2.
The 32.768 kHz watch crystal oscillator can be used by the asynchronous timer if the
(high-frequency) Crystal Oscillator is not running or if the External Clock is not enabed
”Enable/Disable Clock Source” on page
itself this low-frequency crystal oscillator.
CKSEL0
CSEL0
0
0
0
0
1
1
1
1
25. The crystal should be connected as shown in
1. Flash Fuse bits.
2. CLKSELR register bits.
3. These options should only be used when not operating close to the maximum frequency of
4. These options are intended for use with ceramic resonators and will ensure frequency stabil-
5. This setting is only available if RSTDISBL fuse is not set.
(2)
(1)
the device, and only if frequency stability at start-up is not important for the application.
These options are not suitable for crystals.
ity at start-up. They can also be used with crystals when not operating close to the maximum
frequency of the device, and if frequency stability at start-up is not important for the
application.
Start-up Times for the Crystal Oscillator Clock Selection
CSUT1..0
SUT1..0
10
01
00
01
11
00
10
11
(5)
(5)
(1)
(2)
Start-up Time from
Power-down/save
16K (16384) CK
16K (16384) CK
16K (16384) CK
1K (1024) CK
1K (1024)CK
1K (1024)CK
258 CK
258 CK
Table
(3)
(3)
32.). The asynchronous timer is then able to start
(4)
(4)
4-7.
(4)
Additional Delay
14CK + 4.1 ms
14CK + 4.1 ms
14CK + 4.1 ms
14CK + 65 ms
14CK + 65 ms
14CK + 65 ms
(Vcc = 5.0V)
from Reset
14CK
14CK
ATtiny87/ATtiny167
Figure
4-3. Refer to the 32.768 kHz
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
Crystal Oscillator, BOD
enabled
Crystal Oscillator, fast
rising power
Crystal Oscillator, slowly
rising power
Table 4-1 on
(See
29