ATtiny85 Atmel Corporation, ATtiny85 Datasheet - Page 170

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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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21.5
21.5.1
170
System and Reset Characteristics
ATtiny25/45/85
Standard Power-On Reset
Table 21-4.
Note:
Two versions of power-on reset have been implemented, as follows.
This implementation of power-on reset existed in early versions of ATtiny25/45/85. The table
below describes the characteristics of this power-on reset and it is valid for the following devices,
only:
Note:
Table 21-5.
Note:
• ATtiny25, revision D, and older
• ATtiny45, revision F, and older
• ATtiny85, revision B, and newer
Symbol
Symbol
V
SR
V
V
V
t
t
V
HYST
BOD
t
I
RST
POR
POA
RST
BG
BG
BG
ON
1. Values are guidelines only.
Revisions are marked on the package (packages 8P3 and 8S2: bottom, package 20M1: top)
1. Values are guidelines, only
2. Threshold where device is released from reset when voltage is rising
3. The power-on reset will not work unless the supply voltage has been below V
Parameter
Release threshold of power-on reset
Activation threshold of power-on reset
Power-on slope rate
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
Characteristics of Standard Power-On Reset. T
Condition
V
V
V
T
V
T
V
T
(2)
A
A
A
CC
CC
CC
CC
CC
(3)
= 25°C
= 25°C
= 25°C
= 3V
= 3V
= 5.5V
= 2.7V
= 2.7V
0.2 V
Min
1.0
Min
0.05
0.01
0.7
A
(1)
CC
= -40° to +85°C
(1)
Typ
1.1
Typ
50
40
15
2
1.0
0.9
(1)
(1)
0.9 V
Max
Max
2.5
1.2
70
1.4
1.3
4.5
POA
2586N–AVR–04/11
(1)
CC
(1)
Units
Units
V/ms
mV
µA
µs
µs
µs
V
V
V
V

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