ATtiny85 Atmel Corporation, ATtiny85 Datasheet - Page 219
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ATtiny85
Manufacturer Part Number
ATtiny85
Description
Manufacturer
Atmel Corporation
Datasheets
1.ATTINY25.pdf
(34 pages)
2.ATTINY25.pdf
(34 pages)
3.ATTINY25.pdf
(30 pages)
4.ATTINY85.pdf
(234 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATtiny85-15SZ
Manufacturer:
ATMEL
Quantity:
30
Company:
Part Number:
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Manufacturer:
CUI
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1 000
Part Number:
ATtiny85-20SU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
ATtiny85V-10SH
Manufacturer:
Intel
Quantity:
62
Part Number:
ATtiny85V-10SU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
2586N–AVR–04/11
2. DebugWIRE looses communication when single stepping into interrupts
3. PLL not locking
4. EEPROM read from application code does not work in Lock Bit Mode 3
5. EEPROM read may fail at low supply voltage / low clock frequency
Problem fix / Workaround
When receiving an interrupt during single stepping, debugwire will loose
communication.
Problem fix / Workaround
When at frequencies below 6.0 MHz, the PLL will not lock
Problem fix / Workaround
When using the PLL, run at 6.0 MHz or higher.
When the Memory Lock Bits LB2 and LB1 are programmed to mode 3, EEPROM read does
not work from the application code.
Problem Fix/Work around
Do not set Lock Bit Protection Mode 3 when the application code needs to read from
EEPROM.
Trying to read EEPROM at low clock frequencies and/or low supply voltage may result in
invalid data.
Problem Fix/Workaround
Do not use the EEPROM when clock frequency is below 1MHz and supply voltage is below
2V. If operating frequency can not be raised above 1MHz then supply voltage should be
more than 2V. Similarly, if supply voltage can not be raised above 2V then operating fre-
quency should be more than 1MHz.
This feature is known to be temperature dependent but it has not been characterised.
Guidelines are given for room temperature, only.
– The EEPROM is read before entering power down.
– VCC is 4.5 volts or higher.
– When using external clock, avoid setting the clock pin as Output.
– Do not read the EEPROM if power down power consumption is important.
– Use VCC lower than 4.5 Volts.
– When singlestepping, disable interrupts.
– When debugging interrupts, use breakpoints within the interrupt routine, and run into
the interrupt.
ATtiny25/45/85
219