ATTINY861-20SU Atmel, ATTINY861-20SU Datasheet - Page 54
![IC MCU AVR 8K FLASH 20MHZ 20SOIC](/photos/6/80/68042/453-20-soic_sml.jpg)
ATTINY861-20SU
Manufacturer Part Number
ATTINY861-20SU
Description
IC MCU AVR 8K FLASH 20MHZ 20SOIC
Manufacturer
Atmel
Series
AVR® ATtinyr
Datasheet
1.ATAVRMC321.pdf
(242 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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9.3.4
9.3.5
54
ATtiny261/461/861
PCMSK0 – Pin Change Mask Register A
PCMSK1 – Pin Change Mask Register B
• Bits 7:0 – PCINT7:0: Pin Change Enable Mask 7:0
Each PCINT7:0 bit selects whether pin change interrupt is enabled on the corresponding I/O pin.
If PCINT7:0 is set and the PCIE1 bit in GIMSK is set, pin change interrupt is enabled on the cor-
responding I/O pin. If PCINT7:0 is cleared, pin change interrupt on the corresponding I/O pin is
disabled.
• Bits 7:0 – PCINT15:8: Pin Change Enable Mask 15:8
Each PCINT15:8 bit selects whether pin change interrupt is enabled on the corresponding I/O
pin. If PCINT11:8 is set and the PCIE0 bit in GIMSK is set, pin change interrupt is enabled on
the corresponding I/O pin, and if PCINT15:12 is set and the PCIE1 bit in GIMSK is set, pin
change interrupt is enabled on the corresponding I/O pin. If PCINT15:8 is cleared, pin change
interrupt on the corresponding I/O pin is disabled.
Bit
0x23 (0x43)
Read/Write
Initial Value
Bit
0x22 (0x42)
Read/Write
Initial Value
7
PCINT7
R/W
1
7
PCINT15
R/W
1
6
PCINT6
R/W
1
6
PCINT14
R/W
1
5
PCINT5
R/W
0
5
PCINT13
R/W
1
4
PCINT4
R/w
0
4
PCINT12
R/w
1
3
PCINT3
R/W
1
3
PCINT11
R/W
1
2
R/W
0
2
PCINT10
R/W
1
PCINT2
1
PCINT1
R/W
0
1
PCINT9
R/W
1
0
PCINT0
R/W
0
0
PCINT8
R/W
1
2588E–AVR–08/10
PCMSK0
PCMSK1
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