ATTINY261-20MU Atmel, ATTINY261-20MU Datasheet - Page 71
![IC MCU AVR 2K FLASH 20MHZ 32-QFN](/photos/12/13/121309/313-32-qfn_sml.jpg)
ATTINY261-20MU
Manufacturer Part Number
ATTINY261-20MU
Description
IC MCU AVR 2K FLASH 20MHZ 32-QFN
Manufacturer
Atmel
Series
AVR® ATtinyr
Specifications of ATTINY261-20MU
Core Processor
AVR
Core Size
8-Bit
Speed
20MHz
Connectivity
USI
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
16
Program Memory Size
2KB (1K x 16)
Program Memory Type
FLASH
Eeprom Size
128 x 8
Ram Size
128 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 11x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
32-VQFN Exposed Pad, 32-HVQFN, 32-SQFN, 32-DHVQFN
Processor Series
ATTINY2x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
128 B
Interface Type
2-Wire, SPI, USI
Maximum Clock Frequency
20 MHz
Number Of Programmable I/os
16
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 11 Channel
Package
32MLF EP
Device Core
AVR
Family Name
ATtiny
Maximum Speed
20 MHz
Operating Supply Voltage
3.3|5 V
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32ATAVRBC100 - REF DESIGN KIT BATTERY CHARGER770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAGATSTK505 - ADAPTER KIT FOR 14PIN AVR MCU
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATTINY261-20MU
Manufacturer:
AVNET
Quantity:
20 000
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11. Timer/Counter0
11.1
11.2
11.2.1
2588E–AVR–08/10
Features
Overview
Registers
•
•
•
•
•
Timer/Counter0 is a general purpose 8/16-bit Timer/Counter module, with two/one Output Com-
pare units and Input Capture feature.
The general operation of Timer/Counter0 is described in 8/16-bit mode. A simplified block dia-
gram of the 8/16-bit Timer/Counter is shown in
including I/O bits and I/O pins, are shown in bold. For actual placement of I/O pins, refer to
out ATtiny261/461/861 and ATtiny261V/461V/861V” on page
bit locations are listed in the
Figure 11-1. 8-/16-bit Timer/Counter Block Diagram
The Timer/Counter0 Low Byte Register (TCNT0L) and Output Compare Registers (OCR0A and
OCR0B) are 8-bit registers. Interrupt request (abbreviated Int.Req. in
Clear Timer on Compare Match (Auto Reload)
One Input Capture unit
Four Independent Interrupt Sources (TOV0, OCF0A, OCF0B, ICF0)
8-bit Mode with Two Independent Output Compare Units
16-bit Mode with One Independent Output Compare Unit
TCCRnA
TCNTnH
OCRnB
=
Timer/Counter
“Register Description” on page
Direction
Count
Clear
TCNTnL
TCCRnB
OCRnA
=
Control Logic
TOP
Figure
Detector
Edge
clk
=
Tn
11-1. CPU accessible I/O Registers,
84.
2. Device-specific I/O Register and
Canceler
Fixed TOP value
( From Prescaler )
Noise
Figure
Clock Select
Detector
Edge
TOVn (Int. Req.)
11-1) signals are all
Comparator Ouput )
OCnA (Int. Req.)
OCnB (Int. Req.)
ICFn (Int. Req.)
( From Analog
ICPn
Tn
“Pin-
71
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