- •Features
- •Pin Configuration
- •Description
- •Block Diagram
- •Pin Descriptions
- •AVCC
- •Port A (PA7..PA0)
- •Port B (PB7..PB0)
- •XTAL1
- •XTAL2
- •Resources
- •AVR CPU Core
- •Architectural Overview
- •I/O Direct
- •Data Direct
- •Data Indirect with Displacement
- •Data Indirect
- •Memories
- •SRAM Data Memory
- •EEPROM Data Memory
- •EEPROM Read/Write Access
- •I/O Memory
- •Clock Systems and their Distribution
- •Clock Sources
- •Default Clock Source
- •Crystal Oscillator
- •External RC Oscillator
- •External Clock
- •Power-on Reset
- •External Reset
- •Brown-out Detection
- •Watchdog Reset
- •Idle Mode
- •Power-down Mode
- •Standby Mode
- •Analog to Digital Converter
- •Analog Comparator
- •Brown-out Detector
- •Internal Voltage Reference
- •Watchdog Timer
- •Port Pins
- •I/O Ports
- •Introduction
- •Configuring the Pin
- •Reading the Pin Value
- •Unconnected Pins
- •Alternate Port Functions
- •Alternate Functions of Port A
- •Alternate Functions Of Port B
- •Register Description for I/O Ports
- •Interrupts
- •Interrupt Vectors
- •Interrupt Handling
- •Interrupt Response Time
- •External Interrupt
- •Pin Change Interrupt
- •Timer/Counters
- •Timer/Counter0 Prescaler
- •Timer/Counter1 Prescaler
- •8-bit Timer/Counter0
- •8-bit Timer/Counter1
- •Timer/Counter1 in PWM Mode
- •Watchdog Timer
- •Overview
- •Register Descriptions
- •Functional Descriptions
- •Three-wire Mode
- •SPI Slave Operation Example
- •Two-wire Mode
- •Start Condition Detector
- •Alternative USI Usage
- •4-bit Counter
- •12-bit Timer/Counter
- •Software Interrupt
- •Analog Comparator
- •Analog to Digital Converter
- •Features
- •Operation
- •Changing Channel or Reference Selection
- •ADC Conversion Result
- •ADLAR = 0
- •ADLAR = 1
- •Fuse Bits
- •Latching of Fuses
- •Signature Bytes
- •Calibration Byte
- •Page Size
- •Signal Names
- •Parallel Programming
- •Enter Programming Mode
- •Chip Erase
- •Programming the Flash
- •Programming the EEPROM
- •Reading the Flash
- •Reading the EEPROM
- •Programming the Lock Bits
- •Reading the Signature Bytes
- •Reading the Calibration Byte
- •Serial Downloading
- •Data Polling Flash
- •Data Polling EEPROM
- •Electrical Characteristics
- •Absolute Maximum Ratings*
- •DC Characteristics
- •External Clock Drive Waveforms
- •External Clock Drive
- •ADC Characteristics
- •Active Supply Current
- •Idle Supply Current
- •Power-down Supply Current
- •Standby Supply Current
- •Pin Pull-up
- •Internal Oscillator Speed
- •Register Summary
- •Instruction Set Summary
- •Ordering Information
- •Packaging Information
- •Errata
- •ATtiny26 Rev. B/C/D
- •Table of Contents
ATtiny26(L)
Figure 86. Idle Supply Current vs. VCC (32 kHz External Oscillator)
ICC (uA)
IDLE SUPPLY CURRENT vs. VCC
32kHz EXTERNAL OSCILLATOR
30
25°C
25
20
15
10
5
0
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
VCC (V)
Power-down Supply Current |
Figure 87. Power-down Supply Current vs. VCC (Watchdog Timer Disabled) |
ICC (uA)
POWER-DOWN SUPPLY CURRENT vs. VCC
WATCHDOG TIMER DISABLED
1.8
85°C
1.6
1.4
-40°C
1.2
25°C
1
0.8
0.6
0.4
0.2
0
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
VCC (V)
141
1477J–AVR–06/07
Figure 88. Power-down Supply Current vs. VCC (Watchdog Timer Enabled)
ICC (uA)
POWER-DOWN SUPPLY CURRENT vs. VCC
WATCHDOG TIMER ENABLED
20 |
85°C |
|
|
||
18 |
25°C |
|
-40°C |
||
|
||
16 |
|
14
12
10
8
6
4
2
0
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
VCC (V)
Standby Supply Current |
Figure 89. Standby Supply Current vs. VCC (455 kHz Resonator, Watchdog Timer |
|
Disabled) |
ICC (uA)
STANDBY SUPPLY CURRENT vs. VCC
455 kHz RESONATOR, WATCHDOG TIMER DISABLED
70
60
50
40
30
20
10
0
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
VCC (V)
142 ATtiny26(L)
1477J–AVR–06/07
ATtiny26(L)
Figure 90. Standby Supply Current vs. VCC (1 MHz Resonator, Watchdog Timer
Disabled)
STANDBY SUPPLY CURRENT vs. VCC
1 MHz RESONATOR, WATCHDOG TIMER DISABLED
60
50
ICC (uA)
40
30
20
10
0
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
VCC (V)
Figure 91. Standby Supply Current vs. VCC (2 MHz Resonator, Watchdog Timer Disabled)
STANDBY SUPPLY CURRENT vs. VCC
2 MHz RESONATOR, WATCHDOG TIMER DISABLED
80
70
ICC (uA)
60
50
40
30
20
10
0
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
VCC (V)
143
1477J–AVR–06/07
Figure 92. Standby Supply Current vs. VCC (2 MHz XTAL, Watchdog Timer Disabled)
ICC (uA)
STANDBY SUPPLY CURRENT vs. VCC
2 MHz XTAL, WATCHDOG TIMER DISABLED
90
80
70
60
50
40
30
20
10
0
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
VCC (V)
Figure 93. Standby Supply Current vs. VCC (4 MHz Resonator, Watchdog Timer Disabled)
STANDBY SUPPLY CURRENT vs. VCC
4 MHz RESONATOR, WATCHDOG TIMER DISABLED
120
100
80
ICC (uA)
60
40
20
0
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
VCC (V)
144 ATtiny26(L)
1477J–AVR–06/07
ATtiny26(L)
Figure 94. Standby Supply Current vs. VCC (4 MHz XTAL, Watchdog Timer Disabled)
ICC (uA)
STANDBY SUPPLY CURRENT vs. VCC
4 MHz XTAL, WATCHDOG TIMER DISABLED
120
100
80
60
40
20
0
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
VCC (V)
Figure 95. Standby Supply Current vs. VCC (6 MHz Resonator, Watchdog Timer Disabled)
STANDBY SUPPLY CURRENT vs. VCC
6 MHz RESONATOR, WATCHDOG TIMER DISABLED
160
ICC (uA)
140
120
100
80
60
40
20
0
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
5 |
5.5 |
VCC (V)
145
1477J–AVR–06/07