ATTINY861-20SU Atmel, ATTINY861-20SU Datasheet - Page 71

• Manufacturer Part Number: ATTINY861-20SU
• Description: IC MCU AVR 8K FLASH 20MHZ 20SOIC
• Manufacturer: Atmel
• Series: AVR® ATtinyr

Specifications of ATTINY861-20SU

• 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: 8KB (4K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 512 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: 20-SOIC (7.5mm Width)
• Cpu Family: ATtiny
• Device Core: AVR
• Device Core Size: 8b
• Frequency (max): 20MHz
• Interface Type: USI
• Total Internal Ram Size: 512Byte
• # I/os (max): 16
• Number Of Timers - General Purpose: 2
• Operating Supply Voltage (typ): 3.3/5V
• Operating Supply Voltage (max): 5.5V
• Operating Supply Voltage (min): 2.7V
• On-chip Adc: 11-chx10-bit
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 20
• Package Type: SOIC
• Processor Series: ATTINY8x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 512 B
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 16
• Number Of Timers: 2
• Operating Supply Voltage: 2.7 V to 5.5 V
• 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, ATAVRMC320
• Minimum Operating Temperature: - 40 C
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32ATAVRBC100 - REF DESIGN KIT BATTERY CHARGER770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPI
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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