ATtiny85 Atmel Corporation, ATtiny85 Datasheet - Page 19

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ATtiny85

Manufacturer Part Number
ATtiny85
Description
Manufacturer
Atmel Corporation
Datasheets

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

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Quantity
Price
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8. Errata
8.1
8.1.1
8.1.2
8.1.3
8.2
8.2.1
8.2.2
2586NS–AVR–04/11
Errata ATtiny25
Errata ATtiny45
Rev D and E
Rev B and C
Rev A
Rev F and G
Rev D and E
The revision letter in this section refers to the revision of the ATtiny25 device.
No known errata.
1. EEPROM read may fail at low supply voltage / low clock frequency
Not sampled.
The revision letter in this section refers to the revision of the ATtiny45 device.
No known errata
1. EEPROM read may fail at low supply voltage / low clock frequency
EEPROM read may fail at low supply voltage / low clock frequency
EEPROM read may fail at low supply voltage / low clock frequency
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.
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.
ATtiny25/45/85
19

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