ATtiny85 Atmel Corporation, ATtiny85 Datasheet - Page 62

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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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10.3.1
62
ATtiny25/45/85
Alternate Functions of Port B
The Port B pins with alternate function are shown in
Table 10-3.
• Port B, Bit 5 – RESET/dW/ADC0/PCINT5
• RESET: External Reset input is active low and enabled by unprogramming (“1”) the
• dW: When the debugWIRE Enable (DWEN) Fuse is programmed and Lock bits are
• ADC0: Analog to Digital Converter, Channel 0
• PCINT5: Pin Change Interrupt source 5.
RSTDISBL Fuse. Pullup is activated and output driver and digital input are deactivated when
the pin is used as the RESET pin.
unprogrammed, the debugWIRE system within the target device is activated. The RESET
port pin is configured as a wire-AND (open-drain) bi-directional I/O pin with pull-up enabled
and becomes the communication gateway between target and emulator.
Port Pin
PB5
PB4
PB3
PB2
PB1
PB0
Port B Pins Alternate Functions
Alternate Function
RESET: Reset Pin
dW:
ADC0:
PCINT5: Pin Change Interrupt, Source 5
XTAL2: Crystal Oscillator Output
CLKO:
ADC2:
OC1B: Timer/Counter1 Compare Match B Output
PCINT4: Pin Change Interrupt 0, Source 4
XTAL1: Crystal Oscillator Input
CLKI:
ADC3:
OC1B: Complementary Timer/Counter1 Compare Match B Output
PCINT3: Pin Change Interrupt 0, Source 3
SCK:
ADC1:
T0:
USCK: USI Clock (Three Wire Mode)
SCL :
INT0:
PCINT2: Pin Change Interrupt 0, Source 2
MISO:
AIN1:
OC0B: Timer/Counter0 Compare Match B Output
OC1A: Timer/Counter1 Compare Match A Output
DO:
PCINT1:Pin Change Interrupt 0, Source 1
MOSI:: SPI Master Data Output / Slave Data Input
AIN0:
OC0A: Timer/Counter0 Compare Match A output
OC1A: Complementary Timer/Counter1 Compare Match A Output
DI:
SDA:
AREF:
PCINT0: Pin Change Interrupt 0, Source 0
debugWIRE I/O
ADC Input Channel 0
System Clock Output
ADC Input Channel 2
External Clock Input
ADC Input Channel 3
Serial Clock Input
ADC Input Channel 1
Timer/Counter0 Clock Source
USI Clock (Two Wire Mode)
External Interrupt 0 Input
SPI Master Data Input / Slave Data Output
Analog Comparator, Negative Input
USI Data Output (Three Wire Mode)
Analog Comparator, Positive Input
USI Data Input (Three Wire Mode)
USI Data Input (Two Wire Mode)
External Analog Reference
.
Table
10-3.
2586N–AVR–04/11

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