ATTINY44A-PU Atmel, ATTINY44A-PU Datasheet - Page 64
![IC MCU AVR 4K FLASH 20MHZ 14PDIP](/photos/7/39/73953/313-14-dip_sml.jpg)
ATTINY44A-PU
Manufacturer Part Number
ATTINY44A-PU
Description
IC MCU AVR 4K FLASH 20MHZ 14PDIP
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY44A-PU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
Number Of I /o
12
Program Memory Size
4KB (2K x 16)
Program Memory Type
FLASH
Eeprom Size
256 x 8
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
14-DIP (0.300", 7.62mm)
Processor Series
ATTINY4x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
SPI/USI
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
12
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
Through Hole
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
Minimum Operating Temperature
- 40 C
On-chip Adc
20-ch x 10-bit
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATAVRISP2 - PROGRAMMER AVR IN SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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10.2.2
64
ATtiny24A/44A/84A
Alternate Functions of Port B
The Port B pins with alternate function are shown in
Table 10-7.
• Port B, Bit 0 – XTAL1/PCINT8
• Port B, Bit 1 – XTAL2/PCINT9
• Port B, Bit 2 – INT0/OC0A/CKOUT/PCINT10
• XTAL1: Chip Clock Oscillator pin 1. Used for all chip clock sources except internal
• PCINT8: Pin Change Interrupt source 8. The PB0 pin can serve as an external interrupt
• CLKI: Clock Input from an external clock source, see
• XTAL2: Chip Clock Oscillator pin 2. Used as clock pin for all chip clock sources except
• PCINT9: Pin Change Interrupt source 9. The PB1 pin can serve as an external interrupt
• INT0: External Interrupt Request 0.
• OC0A: Output Compare Match output: The PB2 pin can serve as an external output for the
• CKOUT - System Clock Output: The system clock can be output on the PB2 pin. The system
• PCINT10: Pin Change Interrupt source 10. The PB2 pin can serve as an external interrupt
calibrateble RC oscillator. When used as a clock pin, the pin can not be used as an I/O pin.
When using internal calibratable RC Oscillator as a chip clock source, PB0 serves as an
ordinary I/O pin.
source for pin change interrupt 1.
internal calibrateble RC Oscillator and external clock. When used as a clock pin, the pin can
not be used as an I/O pin. When using internal calibratable RC Oscillator or External clock as
a Chip clock sources, PB1 serves as an ordinary I/O pin.
source for pin change interrupt 1.
Timer/Counter0 Compare Match A. The PB2 pin has to be configured as an output (DDB2
set (one)) to serve this function. The OC0A pin is also the output pin for the PWM mode timer
function.
clock will be output if the CKOUT Fuse is programmed, regardless of the PORTB2 and DDB2
settings. It will also be output during reset.
source for pin change interrupt 1.
Port Pin
PB0
PB1
PB3
PB2
Port B Pins Alternate Functions
Alternate Function
XTAL1: Crystal Oscillator Input
PCINT8: Pin Change Interrupt 1, Source 8
CLKI:
XTAL2: Crystal Oscillator Output
PCINT9: Pin Change Interrupt 1, Source 9
INT0:
OC0A: Timer/Counter0 Compare Match A output
CKOUT: System Clock Output
PCINT10:Pin Change Interrupt 1, Source 10
RESET: Reset pin
dW:
PCINT11:Pin Change Interrupt 1, Source 11.
External Interrupt 0 Input
External Clock Input
debugWire I/O
Table
“External Clock” on page
10-7.
26.
8183C–AVR–03/11
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