ATtiny85 Atmel Corporation, ATtiny85 Datasheet - Page 4

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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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1.3
1.3.1
Table 1-2.
1.4
4
Calibration
Method
Factory
Calibration
User
Calibration
Clock Characteristics
System and Reset Characteristics
ATtiny25
Calibrated Internal RC Oscillator Accuracy
Calibration Accuracy of Internal RC Oscillator
Fixed frequency within:
Target Frequency
It is possible to manually calibrate the internal oscillator to be more accurate than default factory
calibration. Please note that the oscillator frequency depends on temperature and voltage. Volt-
age and temperature characteristics can be found in
page
Notes:
Table 1-3.
Note:
8.0 MHz
Symbol
6 – 8 MHz
V
V
t
t
V
HYST
BOD
t
I
RST
RST
BG
BG
BG
28.
1. Accuracy of oscillator frequency at calibration point (fixed temperature and fixed voltage).
2. ATtiny25/V, only: 6.4 MHz in ATtiny15 Compatibility Mode.
3. Voltage range for ATtiny25V.
4. Voltage range for ATtiny25.
1. Values are guidelines only.
(2)
Parameter
RESET Pin Threshold Voltage
Minimum pulse width on
RESET Pin
Brown-out Detector Hysteresis
Min Pulse Width on
Brown-out Reset
Bandgap reference
voltage
Bandgap reference
start-up time
Bandgap reference
current consumption
Reset, Brown-out and Internal Voltage Characteristics
Fixed voltage within:
1.8V - 5.5V
2.7V - 5.5V
V
3V
CC
(3)
(4)
Condition
V
V
V
T
V
T
V
T
A
A
A
CC
CC
CC
CC
CC
= 25°C
= 25°C
= 25°C
Fixed temperature
-40°C to +105°C
= 3V
= 3V
= 5.5V
= 2.7V
= 2.7V
Temperature
Figure 2-36 on page 28
within:
25°C
0.2 V
Min
1.0
(1)
CC
Typ
Accuracy at given Voltage
1.1
50
40
15
2
(1)
2586N–Appendix A–AVR–08/11
& Temperature
and
0.9 V
Max
±10%
2.5
1.2
±1%
70
Figure 2-37 on
CC
(1)
Units
(1)
mV
µA
µs
µs
µs
V
V

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