ATtiny85 Atmel Corporation, ATtiny85 Datasheet - Page 99

• Manufacturer Part Number: ATtiny85
• Manufacturer: Atmel Corporation

Specifications of ATtiny85

• Flash (kbytes): 8 Kbytes
• Pin Count: 8
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 3
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 6
• Ext Interrupts: 6
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 4
• 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 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 2
• Output Compare Channels: 5
• Pwm Channels: 6
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

2586N–AVR–04/11
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this unit useful for lower speed functions or exact timing functions with infrequent actions.
Figure 13-2. Timer/Counter 1 Synchronization Register Block Diagram.
Timer/Counter1 and the prescaler allow running the CPU from any clock source while the pres-
caler is operating on the fast 25.6 MHz PCK clock in the asynchronous mode.
The following
PCKE
CK
PCK
SYNC
MODE
ASYNC
MODE
for a detailed description on this function. Similarly, the high prescaling opportunities make
IO-registers
OCR1C
OCF1A
OCR1A
TCCR1
GTCCR
TCNT1
TOV1
Figure 13-3
1..2 PCK Delay
1..2 PCK Delay
shows the block diagram for Timer/Counter1.
S
A
Input synchronization
registers
OCR1A_SI
OCR1C_SI
TCCR1_SI
GTCCR_SI
TCNT1_SI
OCF1A_SI
TOV1_SI
1 PCK Delay
1PCK Delay
S
A
8-BIT DATABUS
Timer/Counter1
TCNT1
~1 CK Delay
~1 CK Delay
Output synchronization
registers
ATtiny25/45/85
TCNT_SO
OCF1A_SO
TOV1_SO
No Delay
No Delay
TCNT1
OCF1A
TOV1
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