ATTINY44-20MU Atmel, ATTINY44-20MU Datasheet - Page 104
![IC MCU AVR 4K FLASH 20MHZ 20-QFN](/photos/6/87/68751/313-20-qfn_sml.jpg)
ATTINY44-20MU
Manufacturer Part Number
ATTINY44-20MU
Description
IC MCU AVR 4K FLASH 20MHZ 20-QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY44-20MU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, 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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
20-MLF®, QFN
Data Bus Width
8 bit
Data Ram Size
256 B
Interface Type
SPI
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
12
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
For Use With
ATAVRISP2 - PROGRAMMER AVR IN SYSTEM
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATTINY44-20MUR
Manufacturer:
ATMEL
Quantity:
2 100
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104
ATtiny24/44/84
Figure 12-11. Timer/Counter Timing Diagram, Setting of OCF1x, with Prescaler (f
Figure 12-12 on page 104
using phase and frequency correct PWM mode the OCR1x Register is updated at BOTTOM.
The timing diagrams will be the same, but TOP should be replaced by BOTTOM, TOP-1 by
BOTTOM+1 and so on. The same renaming applies for modes that set the TOV1 flag at
BOTTOM.
Figure 12-12. Timer/Counter Timing Diagram, no Prescaling
Figure 12-13 on page 105
(PC and PFC PWM)
OCRnx
TCNTn
OCFnx
(clk
and ICFn
(CTC and FPWM)
clk
(Update at TOP)
clk
TOVn
I/O
I/O
Tn
OCRnx
TCNTn
TCNTn
(clk
as TOP)
/8)
clk
clk
I/O
(FPWM)
I/O
Tn
/1)
(if used
OCRnx - 1
TOP - 1
TOP - 1
shows the same timing data, but with the prescaler enabled.
shows the count sequence close to TOP in various modes. When
Old OCRnx Value
OCRnx
OCRnx Value
TOP
TOP
OCRnx + 1
BOTTOM
TOP - 1
New OCRnx Value
BOTTOM + 1
OCRnx + 2
clk_I/O
8006K–AVR–10/10
TOP - 2
/8)
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