ATTINY25-20PU - Atmel - Datasheet.Directory

Features

•High Pe rformance, Low Power AVR® 8-Bit Microcontroller

•Advanced RISC Architecture

– 120 Po we rful Instructions – Most Single Clock Cy cle Execu tion

– 32 x 8 General Purpose Working Registers

– Fully Static Operation

•Non-volatile Program and Data Memories

– 2/4/8K Bytes of In-System Programmable Program Memory Flash

• Endurance: 10,000 Write/Erase Cycles

– 128/256/512 Bytes In-System Programmable EEPROM

• Endurance: 100,000 Write/Erase Cycles

– 128/256/512 Bytes Internal SR AM

– Programming Lock for Self-Programming Flash Program and EEPROM Data

Security

•Peripheral Features

– 8-bit Timer/Counter with Prescaler and Two PWM Channels

– 8-bit High Speed Timer/Counter with Separate Prescaler

• 2 High Frequency PWM Outputs with Sepa rate Output Compare Registe rs

• Programmable Dead Time Generator

– USI – Universal Serial Interface with Start Condition Detector

– 10-bit ADC

• 4 Single Ended Channels

• 2 Differential ADC Channel Pairs with Programmable Gain (1x, 20x)

• Temperature Measurement

– Programmable Watchdog Timer with Separate On-chip Oscillator

– On-chip Analog Comparator

•Special Microcontroller Features

– debugWIRE On-chip Debug System

– In-System Programmable via SPI Port

– External and Internal Interrupt Sources

– Low Power Idle, ADC Noise Reduction, and Power-down Modes

– Enhanced P ower-on Reset Circuit

– Programmable Brown-out Detection Circuit

– Internal Calibrated Oscillator

•I/O and Packages

– Six Programmable I/O Lines

– 8-pin PDIP, 8-pin SOIC, 20-pad QFN/MLF, and 8-pin TSSOP (only ATtiny45/V)

•Operatin g Voltage

– 1.8 - 5.5V for ATtiny25V/45V/85V

– 2.7 - 5.5V for ATtiny25/45/85

•Speed Grade

– ATtiny25V/45V/85V: 0 – 4 MHz @ 1.8 - 5.5V, 0 - 10 MHz @ 2.7 - 5.5V

– ATtiny25/45/85: 0 – 10 MHz @ 2.7 - 5.5V, 0 - 20 MHz @ 4.5 - 5.5V

•Industrial Temperature Range

•Low Power Consumption

– Active Mode:

• 1 MHz, 1.8V: 300 µA

– Power-down Mode:

• 0.1 µA at 1.8V

8-bit

Microcontroller

with 2/4/8K

Bytes In-System

Programmable

Flash

ATtiny25/V

ATtiny45/V

ATtiny85/V

Summary

Rev. 2586NS–AVR–04/11

22586NS–AVR–04/11

ATtiny25/45/85

1. Pin Configurations

Figure 1-1. Pinout ATtiny25 /4 5/85

1.1 Pin Descriptions

1.1.1 VCC Supply voltage.

1.1.2 GND Ground.

1.1.3 Port B (PB5:PB0)

Port B is a 6-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The

Port B output buffers have symmetrical drive characteristics with both high sink and source

capability. As inputs, Port B pins that are externally pulled low will source current if the pull-up

(PCINT5/RESET/ADC0/dW) PB5

(PCINT3/XTAL1/CLKI/OC1B/ADC3) PB3

(PCINT4/XTAL2/CLKO/OC1B/ADC2) PB4

GND

VCC

PB2 (SCK/USCK/SCL/ADC1/T0/INT0/PCINT2)

PB1 (MISO/DO/AIN1/OC0B/OC1A/PCINT1)

PB0 (MOSI/DI/SDA/AIN0/OC0A/OC1A/AREF/PCINT0)

PDIP/SOIC/TSSOP

QFN/MLF

DNC

GND

DNC

NOTE: Bottom pad should be soldered to ground.

DNC: Do Not Connect

NOTE: TSSOP only for ATtiny45/V

(PCINT5/RESET/ADC0/dW) PB5

(PCINT3/XTAL1/CLKI/OC1B/ADC3) PB3

DNC

(PCINT4/XTAL2/CLKO/OC1B/ADC2) PB4

VCC

PB2 (SCK/USCK/SCL/ADC1/T0/INT0/PCINT2)

DNC

PB1 (MISO/DO/AIN1/OC0B/OC1A/PCINT1)

PB0 (MOSI/DI/SDA/AIN0/OC0A/OC1A/AREF/PCINT0)

2586NS–AVR–04/11

ATtiny25/45/85

resistors are activated. Th e Port B pins are tri-stated when a reset co ndition becomes active,

even if the clock is not running.

Port B also serve s the functions of var ious special features of the ATtiny25/45/85 as listed in

“Alternate Functions of Port B” on page 62.

On ATtiny25, the programmable I/O ports PB3 and PB4 (pins 2 and 3) are exchanged in

ATtiny15 Compatibility Mode for supporting the backward compatibility with ATtiny15.

1.1.4 RESET Reset input. A low level on this pin for longer than the minimum pulse length will gen erate a

reset, even if the clock is not r unning and pr ovided the reset pin has not be en disabled . The min-

imum pulse length is given in Table 21-4 on page 170. Shorter pulses are not guaranteed to

generate a reset.

The reset pin can also be used as a (weak) I/O pin.

42586NS–AVR–04/11

ATtiny25/45/85

2. Overview The ATtiny25/45/85 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced

RISC architecture. By executing powerf ul instru ctio ns in a single clock cycle, the ATt iny25 /45/ 85

achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize

power consumption versus proc essing speed.

2.1 Block Diagram

Figure 2-1. Block Diagram

The AVR core combines a rich instruction set with 32 general purpose working registers. All 32

registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent

PROGRAM

COUNTER

CALIBRATED

INTERNAL

OSCILLATOR

WATCHDOG

TIMER

STACK

POINTER

PROGRAM

FLASH SRAM

MCU CONTROL

GENERAL

PURPOSE

REGISTERS

INSTRUCTION

TIMER/

COUNTER0

SERIAL

UNIVERSAL

INTERFACE

TIMER/

COUNTER1

INSTRUCTION

DECODER

DATA DIR.

REG.PORT B

DATA REGISTER

PORT B

PROGRAMMING

LOGIC

TIMING AND

CONTROL

MCU STATUS

STATUS

ALU

PORT B DRIVERS

PB[0:5]

VCC

GND

CONTROL

LINES

8-BIT DATABUS

ADC /

ANALOG COMPARATOR

INTERRUPT

UNIT

DATA

EEPROM OSCILLATORS

RESET

2586NS–AVR–04/11

ATtiny25/45/85

registers to be accessed in one single instruction executed in one clock cycle. The resulting

architecture is more code efficient while achiev ing throughputs up to ten times faster than con-

ventional CISC microcontrollers.

The ATtiny25/45/85 provides the following features: 2/4/8K bytes of In-System Programmable

Flash, 128/256/512 bytes EEPROM, 128/256/256 bytes SRAM, 6 general purpose I/O lines, 32

general purpose working registers, one 8-bit Timer/Counter with compare modes, one 8-bit high

speed Timer/Counter, Universal Serial Interface, Internal and External Interrupts, a 4-channel,

10-bit ADC, a programmable Watchdog Timer with internal Oscillator, and three software select-

able power saving modes. Idle mode stops the CPU while allowing the SRAM, Timer/Counter,

ADC, Analog Comparator, and Interrupt system to continue functioning. Power-down mode

saves the register content s, disabling all chip functions until the nex t Interrupt or Hardware

Reset. ADC Noise Reduction mode stop s the CPU and all I /O modules except ADC, to minimi ze

switching noise during ADC conversions.

The device is manufactured using Atmel’s high density non-volatile memory technology. The

On-chip ISP Flash allows the Program memory to be re-programmed In-System through an SPI

serial interface, by a conventional non-volatile memory programmer or by an On-chip boot code

running on the AVR core.

The ATtiny25/45/ 85 AVR is suppor ted with a f ull suite of program and syst em developmen t tools

including: C Compilers, Macro Assemblers, Program Debugger/Simulators and Evaluation kits.

62586NS–AVR–04/11

ATtiny25/45/85

3. About

3.1 Resources A comprehensive set of development tools, application notes and datasheets are available for

download on http://www.atmel.com/avr.

3.2 Code Examples

This documentatio n contains simple co de examples that br iefly sh ow how to u se various parts of

the device. These code examp les assume that the part specific header file is included b efore

compilation. Be aware that not all C compiler vendors include bit definitions in the header files

and interrupt ha ndlin g in C is com piler d epe nd ent. Please con firm wit h the C com piler d ocume n-

tation for more details.

For I/O Registers located in the extended I/O map, “IN”, “OUT”, “SBIS”, “SBIC”, “CBI”, and “SBI”

instructions must be replaced with instructions that allow access to extended I/O. Typically, this

means “LDS” and “STS” combined with “SBRS”, “SBRC”, “SBR”, and “CBR”. Note that not all

AVR devices include an exte nded I/O map.

3.3 Capacitive Touch Sensing

Atmel QTouch Library provides a simple to use solution for touch sensitive interfaces on Atmel

AVR microcontrollers. The QTouch Library includes support for QTouch® and QMatrix® acquisi-

tion methods.

Touch sensing is easily added to any application by linking the QTouch Library and using the

Application Progra mming In terface (API ) of the libra ry to defi ne the touch ch annels and sensors.

The application then calls the API to retrieve channel information and determine the state of the

touch sensor.

The QTouch Library is free and can be downloaded from the Atmel website. For more informa-

tion and details of implementation, refer to the QTouch Library User Guide – also available from

the Atmel website.

3.4 Data Retention

Reliability Qualification results show that the projected data retention failure rate is much less

than 1 PPM over 20 years at 85°C or 100 years at 25°C.

2586NS–AVR–04/11

ATtiny25/45/85

4. Register Summary

Address Name Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page

0x3F SREG I T H S V N Z C page 8

0x3E SPH – – – – – – SP9 SP8 page 11

0x3D SPL SP7 SP6 SP5 SP4 SP3 SP2 SP1 SP0 page 11

0x3C Reserved –

0x3B GIMSK – INT0 PCIE – – – – – page 53

0x3A GIFR – INTF0 PCIF – – – – – page 54

0x39 TIMSK – OCIE1A OCIE1B OCIE0A OCIE0B TOIE1 TOIE0 – pages 84, 106

0x38 TIFR – OCF1A OCF1B OCF0A OCF0B TOV1 TOV0 –page 84

0x37 SPMCSR –– RSIG CTPB RFLB PGWRT PGERS SPMEN page 149

0x36 Reserved –

0x35 MCUCR BODS PUD SE SM1 SM0 BODSE ISC01 ISC00 pages 38, 53, 66

0x34 MCUSR – – – – WDRF BORF EXTRF PORF page 46,

0x33 TCCR0B FOC0A FOC0B –– WGM02 CS02 CS01 CS00 page 82

0x32 TCNT0 Timer/Counter0 page 83

0x31 OSCCAL Oscillator Calibration Re gister page 32

0x30 TCCR1 CTC1 PWM1A COM1A1 COM1A0 CS13 CS12 CS11 CS10 pages 92, 103

0x2F TCNT1 Timer/Counter1 pages 94, 105

0x2E OCR1A Timer/Counter1 Output Compare Register A pages 94, 105

0x2D OCR1C Timer/Counter1 Output Compare Register C pages 95, 106

0x2C GTCCR TSM PWM1B COM1B1 COM1B0 FOC1B FOC1A PSR1 PSR0 pages 80, 93, 105

0x2B OCR1B Timer/Counter1 Output Compare Register B page 95

0x2A TCCR0A COM0A1 COM0A0 COM0B1 COM0B0 –WGM01 WGM00 page 80

0x29 OCR0A Timer/Count er0 – Output Co mpare Registe r A page 83

0x28 OCR0B Timer/Count er0 – Output Co mpare Registe r B page 84

0x27 PLLCSR LSM –––– PCKE PLLE PLOCK pages 97, 107

0x26 CLKPR CLKPCE – – – CLKPS3 CLKPS2 CLKPS1 CLKPS0 page 33

0x25 DT1A DT1AH3 DT1AH2 DT1AH1 DT1AH0 DT1AL3 DT1AL2 DT1AL1 DT1AL0 page 110

0x24 DT1B DT1BH3 DT1BH2 DT1BH1 DT1BH0 DT1BL3 DT1BL2 DT1BL1 DT1BL0 page 110

0x23 DTPS1 - - - - - - DTPS11 DTPS10 page 109

0x22 DWDR DWDR[7:0] page 144

0x21 WDTCR WDIF WDIE WDP3 WDCE WDE WDP2 WDP1 WDP0 page 47

0x20 PRR –PRTIM1 PRTIM0 PRUSI PRADC page 37

0x1F EEARH EEAR8 page 20

0x1E EEARL EEAR7 EEAR6 EEAR5 EEAR4 EEAR3 EEAR2 EEAR1 EEAR0 page 20

0x1D EEDR EEPROM Data Register page 20

0x1C EECR –– EEPM1 EEPM0 EERIE EEMPE EEPE EERE page 21

0x1B Reserved –

0x1A Reserved –

0x19 Reserved –

0x18 PORTB –– PORTB5 PORTB4 PORTB3 PORTB2 PORTB1 PORTB0 page 66

0x17 DDRB –– DDB5 DDB4 DDB3 DDB2 DDB1 DDB0 page 66

0x16 PINB –– PINB5 PINB4 PINB3 PINB2 PINB1 PINB0 page 66

0x15 PCMSK –– PCINT5 PCINT4 PCINT3 PCINT2 PCINT1 PCINT0 page 54

0x14 DIDR0 –– ADC0D ADC2D ADC3D ADC1D AIN1D AIN0D pages 125, 142

0x13 GPIOR2 General Purpose I/O Register 2 page 10

0x12 GPIOR1 General Purpose I/O Register 1 page 10

0x11 GPIOR0 General Purpose I/O Register 0 page 10

0x10 USIBR USI Buffer Register page 118

0x0F USIDR USI Data Register page 118

0x0E USISR USISIF USIOIF USIPF USIDC USICNT3 USICNT2 USICNT1 USICNT0 page 119

0x0D USICR USISIE USIOIE USIWM1 USIWM0 USICS1 USICS0 USICLK USITC page 120

0x0C Reserved –

0x0B Reserved –

0x0A Reserved –

0x09 Reserved –

0x08 ACSR ACD ACBG ACO ACI ACIE –ACIS1 ACIS0 page 124

0x07 ADMUX REFS1 REFS0 ADLAR REFS2 MUX3 MUX2 MUX1 MUX0 page 138

0x06 ADCSRA ADEN ADSC ADATE ADIF ADIE ADPS2 ADPS1 ADPS0 page 140

0x05 ADCH ADC Data Register High Byte page 141

0x04 ADCL ADC Data Register Low Byte page 141

0x03 ADCSRB BIN ACME IPR –– ADTS2 ADTS1 ADTS0 pages 124, 141

0x02 Reserved –

0x01 Reserved –

0x00 Reserved –

82586NS–AVR–04/11

ATtiny25/45/85

Note: 1. For compatibili ty with future devices, reserved bits should be written to zero if accessed. Reserved I/O memory addresses

should never be written.

2. I/O Registers within the address range 0x00 - 0x1F are directly bit-accessible using the SBI and CBI instructions. In these

registers, the value of single bits can be checked by using the SBIS and SBIC instructions.

3. Some of the Status Flags are cleared by writing a logical one to them. Note that, unlike most other AVRs, the CBI and SBI

instructions will only operation the specified bit, and can therefore be used on registers containing such Status Flags. The

CBI and SBI instructions work with registers 0x00 to 0x1F only.

2586NS–AVR–04/11

ATtiny25/45/85

5. Instruction Set Summary

Mnemonics Operands Description Operation Flags #Clocks

ARITHMETIC AND LOGIC INSTRUCTIONS

ADD Rd, Rr Add two Registers Rd ← Rd + Rr Z,C,N,V,H 1

ADC Rd, Rr Add with Carry two Registers Rd ← Rd + Rr + C Z,C,N,V,H 1

ADIW Rdl,K Add Immediate to Word Rdh:Rdl ← Rdh:Rdl + K Z,C,N,V,S 2

SUB Rd, Rr Subtract two Registers Rd ← Rd - Rr Z,C,N,V,H 1

SUBI Rd, K Subtract Constant from Register Rd ← Rd - K Z,C,N,V,H 1

SBC Rd, Rr Subtract with Carry two Registers Rd ← Rd - Rr - C Z,C,N,V,H 1

SBCI Rd, K Subtract with Carry Constant from Reg. Rd ← Rd - K - C Z,C,N,V,H 1

SBIW Rdl,K Subtract Immediate from Word Rdh:Rdl ← Rdh:Rdl - K Z,C,N,V,S 2

AND Rd, Rr Logical AND Registers Rd ← Rd • Rr Z,N,V 1

ANDI Rd, K Logical AND Register and Constant Rd ← Rd • K Z,N,V 1

OR Rd, Rr Logical OR Re gisters Rd ← Rd v Rr Z,N,V 1

ORI Rd, K Logical OR Register and Constant Rd ← Rd v K Z,N,V 1

EOR Rd, Rr Exclusive OR Registers Rd ← Rd ⊕ Rr Z,N,V 1

COM Rd One’s Complement Rd ← 0xFF − Rd Z,C,N,V 1

NEG Rd Two’s Complement Rd ← 0x00 − Rd Z,C,N,V,H 1

SBR Rd,K Set Bit(s) in Register Rd ← Rd v K Z,N,V 1

CBR Rd,K Clear Bit(s) in Register Rd ← Rd • (0xFF - K) Z,N,V 1

INC Rd Increment Rd ← Rd + 1 Z,N,V 1

DEC Rd Decrement Rd ← Rd − 1 Z,N,V 1

TST Rd Test f or Zero or Minus Rd ← Rd • Rd Z,N,V 1

CLR Rd Clear Register Rd ← Rd ⊕ Rd Z,N,V 1

SER Rd Set Register Rd ← 0xFF None 1

BRANCH INSTRUCTIONS

RJMP k Relative Jump PC ← PC + k + 1 None 2

IJMP Indirect Jump to (Z) PC ← Z None 2

RCALL k Relative Subrou tine Call PC ← PC + k + 1 None 3

ICALL Indirect Call to (Z) PC ← ZNone3

RET Subroutine Return PC ← STACK None 4

RETI Interrupt Return PC ← STACK I 4

CPSE Rd,Rr Compare, Skip if Equal if (Rd = Rr) PC ← PC + 2 or 3 None 1/2/3

CP Rd,Rr Compare Rd − Rr Z, N,V,C,H 1

CPC Rd,Rr Compare with Carry Rd − Rr − C Z, N,V,C,H 1

CPI Rd,K Compare Register with Immediate Rd − K Z, N,V,C,H 1

SBRC Rr, b Skip if Bit in Register Cleared if (Rr(b)=0) PC ← PC + 2 or 3 None 1/2/3

SBRS Rr, b Skip if Bit in Register is Set if (Rr(b)=1) PC ← PC + 2 or 3 None 1/2/3

SBIC P, b Skip if Bit in I/O Register Cleared if (P(b)=0) PC ← PC + 2 or 3 None 1/2 /3

SBIS P, b Skip if Bit in I/O Register is Set if (P(b)=1) PC ← PC + 2 or 3 None 1/2/3

BRBS s, k Branch if Status Flag Set if (SREG(s ) = 1) then PC←PC+k + 1 None 1/2

BRBC s, k Branch if Status Flag Cleared if (SREG(s) = 0) then PC←PC+k + 1 None 1/2

BREQ k Branch if Equal if (Z = 1) then PC ← PC + k + 1 None 1/2

BRNE k Branch if Not Equal if (Z = 0) then PC ← PC + k + 1 None 1/2

BRCS k Branch if Carry Set if (C = 1) then PC ← PC + k + 1 None 1/2

BRCC k Branch if Carry Cleared if (C = 0) then PC ← PC + k + 1 None 1/2

BRSH k Branch if Same or Higher if (C = 0) then PC ← PC + k + 1 None 1/2

BRLO k Branch if Lower if (C = 1) then PC ← PC + k + 1 None 1/2

BRMI k Branch if Minus if (N = 1) then PC ← PC + k + 1 None 1/2

BRPL k Branch if Plus if (N = 0) then PC ← PC + k + 1 None 1/2

BRGE k Branch if Greater or Equal, Signed if (N ⊕ V= 0) then PC ← PC + k + 1 None 1/2

BRLT k Branch if Less Than Zero, Signed if (N ⊕ V= 1) then PC ← PC + k + 1 None 1/2

BRHS k Branch if Half Carry Flag Set if (H = 1) then PC ← PC + k + 1 None 1/2

BRHC k Branch if Half Carry Flag Cleared if (H = 0) then PC ← PC + k + 1 None 1/2

BRTS k Branch if T Flag Set if (T = 1) then PC ← PC + k + 1 None 1/2

BRTC k Branch if T Flag Cleared if (T = 0) then PC ← PC + k + 1 None 1/2

BRVS k Branch if Overflow Flag is Set if (V = 1) then PC ← PC + k + 1 None 1/2

BRVC k Branch if Overflow Flag is Cleared if (V = 0) then PC ← PC + k + 1 N one 1/2

BRIE k Branch if Interrupt Enabled if ( I = 1) then PC ← PC + k + 1 None 1/2

BRID k Branch if Interrupt Disabled if ( I = 0) then PC ← PC + k + 1 None 1/2

BIT AND BIT-TEST INSTRUCTIONS

SBI P,b Set Bit in I/O Register I/O(P,b) ← 1None2

CBI P,b Clear Bit in I/O Register I/O(P,b) ← 0None2

LSL Rd Logical Shift Left Rd(n+1) ← Rd(n), Rd(0) ← 0 Z,C,N,V 1

LSR Rd Logical Shift Right Rd(n) ← Rd(n+1), Rd(7) ← 0 Z,C,N,V 1

ROL Rd Rotate Left Through Carry Rd(0)←C,Rd(n+1)← Rd(n),C←Rd(7) Z,C,N,V 1

ROR Rd Rotate Rig ht Through Carry Rd(7)←C,Rd(n)← Rd(n+1),C←Rd(0) Z,C,N,V 1

10 2586NS–AVR–04/11

ATtiny25/45/85

ASR Rd Arithmetic Shift Right Rd(n) ← Rd(n+1), n=0..6 Z,C,N,V 1

SWAP Rd Swap Nibbles Rd(3..0)←Rd(7..4),Rd(7..4)←Rd(3..0) None 1

BSET s Flag Set SREG(s) ← 1 SREG(s) 1

BCLR s Flag Clear SREG(s) ← 0 SREG(s) 1

BST Rr, b Bit Store from Register to T T ← Rr(b) T 1

BLD Rd, b Bit load from T to Register Rd(b) ← TNone1

SEC Set Carry C ← 1C1

CLC Clear Carry C ← 0 C 1

SEN Set Negative Flag N ← 1N1

CLN Clear Negative Flag N ← 0 N 1

SEZ Set Zero Flag Z ← 1Z1

CLZ Clear Zero Flag Z ← 0 Z 1

SEI Global Interrupt Enable I ← 1I1

CLI Global Interrupt Disable I ← 0 I 1

SES Set Signed Test Flag S ← 1S1

CLS Clear Signed Test Flag S ← 0 S 1

SEV Set Twos Complement Overflow. V ← 1V1

CLV Clear Twos Complement Overflow V ← 0 V 1

SET Set T in SREG T ← 1T1

CLT Clear T in SREG T ← 0 T 1

SEH Set Half Carry Flag in SREG H ← 1H1

CLH Clear Half Carry Flag in SREG H ← 0 H 1

DATA TRANSFER INSTRUCTIONS

MOV Rd, Rr Move Between Registers Rd ← Rr None 1

MOVW Rd, Rr Copy Register Word Rd+1:Rd ← Rr+1:Rr None 1

LDI Rd, K Load Immediate Rd ← KNone1

LD Rd, X Load Indirect Rd ← (X) None 2

LD Rd, X+ Load Indirect and Post-Inc. Rd ← (X), X ← X + 1 None 2

LD Rd, - X Load Indirect and Pre-Dec. X ← X - 1, Rd ← (X) None 2

LD Rd, Y Load Indirect Rd ← (Y) None 2

LD Rd, Y+ Load Indirect and Post-Inc. Rd ← (Y), Y ← Y + 1 None 2

LD Rd, - Y Load Indirect and Pre-Dec. Y ← Y - 1, Rd ← (Y) None 2

LDD Rd,Y+q Load Indirect with Displacement Rd ← (Y + q) None 2

LD Rd, Z Load Indirect Rd ← (Z) None 2

LD Rd, Z+ Load Indirect and Post-Inc. Rd ← (Z), Z ← Z+1 None 2

LD Rd, -Z Load Indirect and Pre-Dec. Z ← Z - 1, Rd ← (Z) None 2

LDD Rd, Z+q Load Indirect with Displacement Rd ← (Z + q) None 2

LDS Rd, k Load Direct from SRAM Rd ← (k) None 2

ST X, Rr Store Indirect (X) ← Rr None 2

ST X+, Rr Store Indirect and Post-Inc. (X) ← Rr, X ← X + 1 None 2

ST - X, Rr Store Indirect and Pre-Dec. X ← X - 1, (X) ← Rr None 2

ST Y, Rr Store Indirect (Y) ← Rr None 2

ST Y+, Rr Store Indirect and Post-Inc. (Y) ← Rr, Y ← Y + 1 None 2

ST - Y, Rr Store Indirect and Pre-Dec. Y ← Y - 1, (Y) ← Rr None 2

STD Y+q,Rr Store Indi rect with Displacement (Y + q) ← Rr None 2

ST Z, Rr Store Indire ct (Z) ← Rr None 2

ST Z+, Rr Store Indirect and Post-Inc. (Z) ← Rr, Z ← Z + 1 None 2

ST -Z, Rr Store Indirect and Pre-Dec. Z ← Z - 1, (Z) ← Rr None 2

STD Z+q,Rr Store Indirect with Displacement (Z + q) ← Rr None 2

STS k, Rr Store Direct to SRAM (k) ← Rr None 2

LPM Load Program Memory R0 ← (Z) None 3

LPM Rd, Z Load Program Memory Rd ← (Z) None 3

LPM Rd, Z+ Loa d P rogram Memory and Post-Inc Rd ← (Z), Z ← Z+1 None 3

SPM Store Program Memory (z) ← R1:R0 None

IN Rd, P In Port Rd ← PNone1

OUT P, Rr Out Port P ← Rr None 1

PUSH Rr Push Register on Stack S TACK ← Rr None 2

POP Rd Pop Register from Stack Rd ← STACK None 2

MCU CONTROL INSTRUCTIONS

NOP No Operation None 1

SLEEP Sleep (see specific descr. for Sleep function) None 1

WDR Watchdog Reset (see specific descr. for WDR/Timer) None 1

BREAK Break For On-chip Debug Only None N/A

Mnemonics Operands Description Operation Flags #Clocks

2586NS–AVR–04/11

ATtiny25/45/85

6. Ordering Information

Notes: 1. For speed vs. supply voltage, see section 21.3 “Speed” on page 168.

2. All packages are Pb-free, halide-free and fully green, and they comply with the European directive for Restriction of Hazard-

ous Substances (RoHS).

3. Code indicators: – H: NiPdA u lead finish

– U or N: matte tin

– R: tape & reel

4. Can also be supplied in wafer form. Contact your local Atmel sales office for ordering inf ormation and minimum quantities.

5. For Typical and Electrical characteristics for this device please consult Appendix A, ATtiny25/V Speci fication at 105°C.

6.1 ATtiny25

Speed (MHz) (1) Supply Voltage (V) Temperature Range Package (2) Ordering Code (3)

10 1.8 – 5.5

Industrial

(-40°C to +85°C) (4)

8P3 ATtiny25V-10PU

8S2 ATtiny25V-10SU

ATtiny25V-10SUR

ATtiny25V-10SH

S8S1 ATtiny25V-10SSU

ATtiny25V-10SSUR

ATtiny25V-10SSH

20M1 ATtiny25V-10MU

ATtiny25V-10MUR

Industrial

(-40°C to +105°C) (5)

8S2 ATtiny25V-10SN

ATtiny25V-10SNR

S8S1 ATtiny25V-10SSN

ATtiny25V-10SSNR

20 2.7 – 5.5

Industrial

(-40°C to +85°C) (4)

8P3 ATtiny25-20PU

8S2 ATtiny25-20SU

ATtiny25-20SUR

ATtiny25-20SH

S8S1 ATtiny25-20SSU

ATtiny25-20SSUR

ATtiny25-20SSH

20M1 ATtiny25-20MU

ATtiny25-20MUR

Industrial

(-40°C to +105°C) (5)

8S2 ATtiny25-20SN

ATtiny25-20SNR

S8S1 ATtiny25-20SSN

ATtiny25-20SSNR

Package Types

8P3 8-lead, 0.300" Wide, Plastic Dual Inline Package (PDIP)

8S2 8-lead, 0.208" Wide, Plastic Gull-Wing Small Outline (EIAJ SOIC)

S8S1 8-lead, 0.150" Wide, Plastic Gull-Wing Small Outline (JEDEC SOIC)

20M1 20-pad, 4 x 4 x 0.8 mm Body, Quad Flat No-Lead/Micro Lead Frame Package (QFN/MLF)

12 2586NS–AVR–04/11

ATtiny25/45/85

Notes: 1. For speed vs. supply voltage, see section 21.3 “Speed” on page 168.

2. All packages are Pb-free, halide-free and fully green and they comply with the European directive for Restrictio n of Hazard-

ous Substances (RoHS).

3. Code indicators: – H: NiPdA u lead finish

– U: matte tin

– R: tape & reel

4. These devices can also be supplied in waf er form. Please contact your local Atmel sales office for detailed ordering informa-

tion and minimum quantities.

6.2 ATtiny45

Speed (MHz) (1) Supply Voltage (V) Temperature Range Package (2) Ordering Code (3)

10 1.8 – 5.5 Industrial

(-40°C to +85°C) (4)

8P3 ATtiny45V-10PU

8S2 ATtiny45V-10SU

ATtiny45V-10SUR

ATtiny45V-10SH

8X ATtiny45V-10XU

ATtiny45V-10XUR

20M1 ATtiny45V-10MU

ATtiny45V-10MUR

20 2.7 – 5.5 Industrial

(-40°C to +85°C) (4)

8P3 ATtiny45-20PU

8S2 ATtiny45-20SU

ATtiny45-20SUR

ATtiny45-20SH

8X ATtiny45-20XU

ATtiny45-20XUR

20M1 ATtiny45-20MU

ATtiny45-20MUR

Package Types

8P3 8-lead, 0.300" Wide, Plastic Dual Inline Package (PDIP)

8S2 8-lead, 0.208" Wide, Plastic Gull-Wing Small Outline (EIAJ SOIC)

8X 8-lead, 4.4 mm Wide, Plastic Thin Shrink Small Outline Package (TSSOP)

20M1 20-pad, 4 x 4 x 0.8 mm Body, Quad Flat No-Lead/Micro Lead Frame Package (QFN/MLF)

2586NS–AVR–04/11

ATtiny25/45/85

Notes: 1. For speed vs. supply voltage, see section 21.3 “Speed” on page 168.

2. All packages are Pb-free, halide-free and fully green and they comply with the European directive for Restrictio n of Hazard-

ous Substances (RoHS).

3. Code indicators: – H: NiPdA u lead finish

– U: matte tin

– R: tape & reel

4. These devices can also be supplied in waf er form. Please contact your local Atmel sales office for detailed ordering informa-

tion and minimum quantities.

6.3 ATtiny85

Speed (MHz) (1) Supply Voltage (V) Temperature Range Package (2) Ordering Code (3)

10 1.8 – 5.5 Industrial

(-40°C to +85°C) (4)

8P3 ATtiny85V-10PU

8S2 ATtiny85V-10SU

ATtiny85V-10SUR

ATtiny85V-10SH

20M1 ATtiny85V-10MU

ATtiny85V-10MUR

20 2.7 – 5.5 Industrial

(-40°C to +85°C) (4)

8P3 ATtiny85-20PU

8S2 ATtiny85-20SU

ATtiny85-20SUR

ATtiny85-20SH

20M1 ATtiny85-20MU

ATtiny85-20MUR

Package Types

8P3 8-lead, 0.300" Wide, Plastic Dual Inline Package (PDIP)

8S2 8-lead, 0.208" Wide, Plastic Gull-Wing Small Outline (EIAJ SOIC)

20M1 20-pad, 4 x 4 x 0.8 mm Body, Quad Flat No-Lead/Micro Lead Frame Package (QFN/MLF)

14 2586NS–AVR–04/11

ATtiny25/45/85

7. Packaging Information

7.1 8P3

2325 Orchard Parkway

San Jose, CA 95131

TITLE DRAWING NO.

REV.

8P3, 8-lead, 0.300" Wide Body, Plastic Dual

In-line Package (PDIP)

01/09/02

8P3 B

A2 A

4 PLCS

Top View

Side View

End View

COMMON DIMENSIONS

(Unit of Measure = inches)

SYMBOL MIN NOM MAX NOTE

Notes: 1. This drawing is for general information only; refer to JEDEC Drawing MS-001, Variation BA for additional information.

2. Dimensions A and L are measured with the package seated in JEDEC seating plane Gauge GS-3.

3. D, D1 and E1 dimensions do not include mold Flash or protrusions. Mold Flash or protrusions shall not exceed 0.010 inch.

4. E and eA measured with the leads constrained to be perpendicular to datum.

5. Pointed or rounded lead tips are preferred to ease insertion.

6. b2 and b3 maximum dimensions do not include Dambar protrusions. Dambar protrusions shall not exceed 0.010 (0.25 mm).

A 0.210 2

A2 0.115 0.130 0.195

b 0.014 0.018 0.022 5

b2 0.045 0.060 0.070 6

b3 0.030 0.039 0.045 6

c 0.008 0.010 0.014

D 0.355 0.365 0.400 3

D1 0.005 3

E 0.300 0.310 0.325 4

E1 0.240 0.250 0.280 3

e 0.100 BSC

eA 0.300 BSC 4

L 0.115 0.130 0.150 2

2586NS–AVR–04/11

ATtiny25/45/85

7.2 8S2

TITLE DRAWING NO. GPC REV.

Package Drawing Contact:

packagedrawings@atmel.com 8S2STN F

8S2, 8-lead, 0.208” Body, Plastic Small

Outline Package (EIAJ)

4/15/08

COMMON DIMENSIONS

(Unit of Measure = mm)

SYMBOL MIN NOM MAX NOTE

Notes: 1. This drawing is for general information only; refer to EIAJ Drawing EDR-7320 for additional information.

2. Mismatch of the upper and lower dies and resin burrs aren't included.

3. Determines the true geometric position.

4. Values b,C apply to plated terminal. The standard thickness of the plating layer shall measure between 0.007 to .021 mm.

A 1.70 2.16

A1 0.05 0.25

b 0.35 0.48 4

C 0.15 0.35 4

D 5.13 5.35

E1 5.18 5.40 2

E 7.70 8.26

L 0.51 0.85

θ 0° 8°

e 1.27 BSC 3

θθ

TOP VIEWTOP VIEW

E1E1

END VIEWEND VIEW

A1A1

SIDE VIEWSIDE VIEW

16 2586NS–AVR–04/11

ATtiny25/45/85

7.3 S8S1

2325 Orchard Parkway

San Jose, CA 95131

TITLE DRAWING NO.

REV.

S8S1, 8-lead, 0.150" Wide Body, Plastic Gull Wing Small

Outline (JEDEC SOIC)

7/28/03

S8S1A

COMMON DIMENSIONS

(Unit of Measure = mm)

SYMBOL MIN NOM MAX NOTE

Notes:1.This drawing is for general information only; refer to JEDEC Drawing MS-012 for proper dimensions, tolerances, datums,etc.

E 5.79 6.20

E1 3.813.99

A1.35 1.75

A1 0.1 0.25

D4.80 4.98

C 0.17 0.25

b0.31 0.51

L 0.4 1.27

e 1.27 BSC

0o 8o

Top View

Side View

End View

E1 E

2586NS–AVR–04/11

ATtiny25/45/85

7.4 8X

TITLE DRAWING NO.

REV.

Note: These drawings are for general information only. Refer to JEDEC Drawing MO-153AC.

2325 Orchard Parkway

San Jose, CA 95131

4/14/05

8X, 8-lead, 4.4 mm Body Width, Plastic Thin Shrink

Small Outline Package (TSSOP) 8XA

COMMON DIMENSIONS

(Unit of Measure = mm)

SYMBOL MIN NOM MAX NOTE

A 1.05 1.10 1.20

A1 0.05 0.10 0.15

b 0.25 – 0.30

C – 0.127 –

D 2.90 3.05 3.10

E1 4.30 4.40 4.50

E 6.20 6.40 6.60

e 0.65 TYP

L 0.50 0.60 0.70

o – 8o

A1A1

Side View

Top View

End View

E1E1

ØØ

18 2586NS–AVR–04/11

ATtiny25/45/85

7.5 20M1

2325 Orchard Parkway

San Jose, CA 95131

TITLE DRAWING NO.

REV.

20M1, 20-pad, 4 x 4 x 0.8 mm Body, Lead Pitch 0.50 mm, A

20M1

10/27/04

2.6 mm Exposed Pad, Micro Lead Frame Package (MLF)

A 0.70 0.75 0.80

A1 – 0.01 0.05

A2 0.20 REF

b 0.18 0.23 0.30

D 4.00 BSC

D2 2.45 2.60 2.75

E 4.00 BSC

E2 2.45 2.60 2.75

e 0.50 BSC

L 0.35 0.40 0.55

SIDE VIEW

Pin 1 ID

Pin #1

Notch

(0.20 R)

BOTTOM VIEW

TOP VIEW

Note: Reference JEDEC Standard MO-220, Fig. 1 (SAW Singulation) WGGD-5.

COMMON DIMENSIONS

(Unit of Measure = mm)

SYMBOL MIN NOM MAX NOTE

0.08 C

2586NS–AVR–04/11

ATtiny25/45/85

8. Errata

8.1 Errata ATtiny25

The revision letter in this section refers to the revision of the ATtiny25 device.

8.1.1 Rev D and E No known errata.

8.1.2 Rev B and C •EEPROM read ma y fail at low supply voltage / low c l ock frequency

1. EEPROM read may fail at low supply voltage / low clock frequency

Trying to read EEPROM at low clock frequencies and/or low supply voltage may result in

invalid data.

Problem Fix/Workaround

Do not use the EEPROM when clock frequency is below 1MHz and supply voltage is below

2V. If operating frequency can not be raised above 1MHz then supply voltage should be

more than 2V. Similarly, if supply voltage can not be raised above 2V then operating fre-

quency should be more than 1MHz.

This feature is known to be temperature dependent but it has not been characterised.

Guidelines are given for room temperature, only.

8.1.3 Rev A Not sampled.

8.2 Errata ATtiny45

The revision letter in this section refers to the revision of the ATtiny45 device.

8.2.1 Rev F and G No known errata

8.2.2 Rev D and E •EEPROM read ma y fail at low supply voltage / low c l ock frequency

1. EEPROM read may fail at low supply voltage / low clock frequency

Trying to read EEPROM at low clock frequencies and/or low supply voltage may result in

invalid data.

Problem Fix/Workaround

Do not use the EEPROM when clock frequency is below 1MHz and supply voltage is below

2V. If operating frequency can not be raised above 1MHz then supply voltage should be

more than 2V. Similarly, if supply voltage can not be raised above 2V then operating fre-

quency should be more than 1MHz.

This feature is known to be temperature dependent but it has not been characterised.

Guidelines are given for room temperature, only.

20 2586NS–AVR–04/11

ATtiny25/45/85

8.2.3 Rev B and C •PLL not locking

•EEPROM read from application code does not work in Lock Bit Mode 3

•EEPROM read ma y fail at low supply voltage / low c l ock frequency

•Timer Counter 1 PWM output generation on OC1B- XOC1B does not work correctly

1. PLL not locking

When at frequencies below 6.0 MHz, the PLL will not lock

Problem fix / Workaround

When using the PLL, run at 6.0 MHz or hi gher.

2. EEPROM read from application code does not work in Lock Bit Mode 3

When the Memory Lock Bits LB2 and LB1 are programmed to mode 3, EEPROM read does

not work from the ap plication code.

Problem Fix/Work around

Do not set Lock Bit Protection Mode 3 when the application code needs to read from

EEPROM.

3. EEPROM read may fail at low supply voltage / low clock frequency

Trying to read EEPROM at low clock frequencies and/or low supply voltage may result in

invalid data.

Problem Fix/Workaround

Do not use the EEPROM when clock frequency is below 1MHz and supply voltage is below

2V. If operating frequency can not be raised above 1MHz then supply voltage should be

more than 2V. Similarly, if supply voltage can not be raised above 2V then operating fre-

quency should be more than 1MHz.

This feature is known to be temperature dependent but it has not been characterised.

Guidelines are given for room temperature, only.

4. Timer Counter 1 PWM output generation on OC1B – XOC1B does not work correctly

Timer Counter1 PWM output OC1B-XOC1B does not work correctly. Only in the case when

the control bits, COM1B1 and COM1B0 are in the same mode as COM1A1 and COM1A0,

respectively, the OC1B-XOC1B output works correctly.

Problem Fix/Work around

The only workaroun d is to us e same co ntro l setti ng on COM1A[1: 0] and COM1B[ 1:0] cont rol

bits, see table 14-4 in the data sheet. The problem has been f ixed for Tiny45 rev D.

8.2.4 Rev A •Too high power down power consumption

•DebugWIRE looses communication when single stepping into interrupts

•PLL not locking

•EEPROM read from application code does not work in Lock Bit Mode 3

•EEPROM read ma y fail at low supply voltage / low c l ock frequency

1. Too high power down power consumption

Three situations will lead to a too high power down power consumption. These are:

– An e xternal clock is selected by fuses , b ut the I/O POR T is still enab led as an output.

2586NS–AVR–04/11

ATtiny25/45/85

– The EEPROM is read before entering power down.

– VCC is 4.5 volts or higher.

Problem fix / Workaround

– When using external clock, avoid setting the clock pin as Output.

– Do not read the EEPROM if power down power consumption is important.

– Use VCC lower than 4.5 Volts.

2. DebugWIRE looses communication when single stepping into interrupts

When receiving an interrupt during single stepping, debugwire will loose

communication.

Problem fix / Workaround

– When singlestepping, disable interrupts.

– When deb ugging interrupts, use brea kpoints within the interrupt routine , and run into

the interrupt.

3. PLL not locking

When at frequencies below 6.0 MHz, the PLL will not lock

Problem fix / Workaround

When using the PLL, run at 6.0 MHz or hi gher.

4. EEPROM read from application code does not work in Lock Bit Mode 3

When the Memory Lock Bits LB2 and LB1 are programmed to mode 3, EEPROM read does

not work from the ap plication code.

Problem Fix/Work around

Do not set Lock Bit Protection Mode 3 when the application code needs to read from

EEPROM.

5. EEPROM read may fail at low supply voltage / low clock frequency

Trying to read EEPROM at low clock frequencies and/or low supply voltage may result in

invalid data.

Problem Fix/Workaround

Do not use the EEPROM when clock frequency is below 1MHz and supply voltage is below

2V. If operating frequency can not be raised above 1MHz then supply voltage should be

more than 2V. Similarly, if supply voltage can not be raised above 2V then operating fre-

quency should be more than 1MHz.

This feature is known to be temperature dependent but it has not been characterised.

Guidelines are given for room temperature, only.

22 2586NS–AVR–04/11

ATtiny25/45/85

8.3 Errata ATtiny85

The revision letter in this section refers to the revision of the ATtiny85 device.

8.3.1 Rev B and C No known errata.

8.3.2 Rev A •EEPROM read may fail at low supply voltage / low clock frequency

1. EEPROM read may fail at low supply voltage / low clock frequency

Trying to read EEPROM at low clock frequencies and/or low supply voltage may result in

invalid data.

Problem Fix/Workaround

Do not use the EEPROM when clock frequency is below 1MHz and supply voltage is below

2V. If operating frequency can not be raised above 1MHz then supply voltage should be

more than 2V. Similarly, if supply voltage can not be raised above 2V then operating fre-

quency should be more than 1MHz.

This feature is known to be temperature dependent but it has not been characterised.

Guidelines are given for room temperature, only.

2586NS–AVR–04/11

ATtiny25/45/85

9. Datasheet Revision History

9.1 Rev. 2586N-04/11

1. Added:

– Section “Capacitive Touch Sensing” on page 6.

2. Updated:

– Document template.

– Removed “Preliminary” on front page. All devices now final and in production.

– Section “Limitations” on page 37.

– Program example on page 51.

– Section “Overview” on page 126.

–Table 17-4 on page 139.

– Section “Limitations of debugWIRE” on page 144.

– Section “Serial Programming Algorithm” on page 156.

–Table 21-7 on page 171.

– EEPROM errata on pages 217, 217, 218, 219, and 220

– Ordering information on pages 209, 210, and 211.

9.2 Rev. 2586M-07/10

1. Clarified Section 6.4 “Clock Outp ut Buffe r” on pag e 32 .

2. Added Ordering Codes -SN and -SNR for ATtiny25 extended temperature.

9.3 Rev. 2586L-06/10

1. Added:

– TSSOP f or ATtiny45 in “Features” on page 1, Pinout Figure 1-1 on pa ge 2, Ord ering

Information in Section 25.2 “ATtiny45” on page 210, and Packaging Information in

Section 26.4 “8X” on page 215

–Table 6-11, “Capacitance of Low-Frequency Crystal Oscillator,” on page 29

–Figure 22-36 on page 196 and Figure 22-37 on page 196, Typical Characteristics

plots for Bandgap Voltage vs. VCC and Temperature

– Extended temper a ture in Section 25.1 “ATtiny25” on page 209, Ordering Information

– Tape & reel part numbers in Ordering Information, in Section 25.1 “ATt iny25” on

page 209 an d Section 25.2 “ATtiny45” on page 210

2. Updated:

–“Features” on page 1, removed Preliminary from ATtiny25

–Section 8.4.2 “Code Example” on page 46

–“PCMSK – Pin Change Mask Register” on page 54, Bit Descriptions

–“TCCR1 – Timer/Counter1 Control Register” on page 92 and “GTCCR – General

Timer/Counter1 Control Register” on page 93, COM bit descriptions clarified

–Section 20.3.2 “Calibration Bytes” on page 154, frequencies (8 MHz, 6.4 MHz)

–Table 20-11, “Minimum Wait Delay Before Writing the Next Flash or EEPROM

Location,” on page 157, value for tWD_ERASE

24 2586NS–AVR–04/11

ATtiny25/45/85

–Table 20-16, “High -voltage Serial Programming Instruction Set for ATtiny25/45/85,”

on page 163

–Table 21-1, “DC Characteristics. TA = -40°C to +85°C,” on page 166, notes adjusted

–Table 21-11, “Serial Programming Characteri stics, TA = -40°C to +85°C, VCC = 1.8 -

5.5V (Unless Otherwise Noted),” on page 175, added tSLIV

– Bit syntax throughout the datasheet, e.g. from CS02:0 to CS0[2:0].

9.4 Rev. 2586K-01/08

1. Updated Document Template.

2. Added Sections:

–“Data Retention ” on page 6

–“Low Level Interrupt” on page 51

–“Device Signature Imprint Table” on page 153

3. Updated Sections:

–“Internal PLL for Fast Peripheral Clock Generation - clkPCK” on page 24

–“System Clock and Clock Options” on page 23

–“Internal PLL in ATtiny15 Compatibility Mode” on page 24

–“Sleep Modes” on page 35

–“Software BOD Disabl e” on page 36

–“External Interrupts” on page 51

–“Timer/Counter1 in PWM Mode” on page 101

–“USI – Universal Serial Interface” on page 11 1

–“Temperature Measurement” on page 137

–“Reading Lock, Fuse an d Signature Data from Software” on page 147

–“Program And Data Memory Lock Bits” on page 151

–“Fuse Bytes” on page 152

–“Signature Bytes” on page 154

–“Calibration Bytes” on page 154

–“System and Reset Characteristics” on page 170

4. Added Figures:

–“Reset Pin Output Voltage vs. Sink Current (VCC = 3V)” on page 189

–“Reset Pin Output Voltage vs. Sink Current (VCC = 5V)” on page 190

–“Reset Pin Output Voltage vs. Source Current (VCC = 3V)” on page 190

–“Reset Pin Output Voltage vs. Source Current (VCC = 5V)” on page 191

5. Updated Figure:

–“Reset Logic ” on page 41

6. Updated Tables:

–“Start-up Times for Internal Calibrated RC Oscillator Clock” on page 28

–“Start-up Times for Internal Calibrated RC Oscillator Clock (in ATtiny15 Mode)” on

page 28

–“Start-up Times for the 128 kHz Internal Oscillator” on page 29

–“Compare Mode Select in PWM Mode” on page 89

2586NS–AVR–04/11

ATtiny25/45/85

–“Compare Mode Select in PWM Mode” on page 101

–“DC Characteristics. TA = -40°C to +85°C” on page 166

–“Calibration Accuracy of Internal RC Oscillator” on page 169

–“ADC Characteristics” on page 172

7. Updated Code Example in Section:

–“Write” on page 17

8. Updated Bit Descriptions in:

–“MCUCR – MCU Control Register” on page 38

–“Bits 7:6 – COM0A[ 1:0]: Compare Match Output A Mode” on page 80

–“Bits 5:4 – COM0B[ 1:0]: Compare Match Output B Mode” on page 80

–“Bits 2:0 – ADTS[2:0 ]: ADC Auto Trigger Source” on page 142

–“SPMCSR – Store Program Memory Control and Status Register” on page 149.

9. Updated description of feature “EEPR OM read may f ail at lo w supply voltage / low cloc k

frequency” in Sections:

–“Errata ATtiny25” on page 2 1 7

–“Errata ATtiny45” on page 2 1 7

–“Errata ATtiny85” on page 2 2 0

10. Updated Package Description in Sections:

–“ATtiny25” on page 209

–“ATtiny45” on page 210

–“ATtiny85” on page 211

11. Updated Package Drawing:

–“S8S1” on page 214

12. Updated Order Codes for:

–“ATtiny25” on page 209

9.5 Rev. 2586J-12/06

1. Updated “Low Power Consumption” on page 1.

2. Updated desc rip tio n of instruction length in “Architectur al Ove r view ” .

3. Updated Flash size in “In-System Re-programmable Flash Program Memory” on

page 15.

4. Updated cross-references in sections “Atomic Byte Programming” , “Erase” and

“Write” , starting on page 17.

5. Updated “Atomic Byte Programming” on page 17.

6. Updated “Internal PLL for Fast Peripheral Clock Generation - clkPCK” on page 24.

7. Replaced single clocking system figure with two: Figure 6-2 and Figure 6-3.

8. Updated Table 6-1 on page 25, Table 6-13 on page 30 and Table 6-6 on page 28.

9. Updated “Calibrated Internal Oscillator” on page 27.

10. Updated Table 6-5 on page 27.

11. Updated “OSCCAL – Oscillator Calibration Register” on page 32.

12. Updated “CLKPR – Clock Prescale Register” on page 33.

13. Updated “Power-down Mode” on page 36.

26 2586NS–AVR–04/11

ATtiny25/45/85

9.6 Rev. 2586I-09/06

14. Updated “Bit 0” in “PRR – Power Reduction Register” on page 39.

15. Added footnote to Table 8-3 on page 48.

16. Updated Table 10-5 on page 65.

17. Deleted “Bits 7, 2” in “MCUCR – MCU Control Register” on page 66.

18. Updated and moved section “Timer/Counter0 Prescaler and Clock Sources”, now

located on page 68.

19. Updated “Timer/Counter1 Initialization for Asynchronous Mode” on page 89.

20. Updated bit description in “PLLCSR – PLL Control and Status Register” on page 97

and “PLLCSR – PLL Control and Status Register” on page 107.

21. Added recommended maximum frequency in“Prescaling and Conver sion Timing” on

page 129.

22. Updated Figure 17-8 on page 133 .

23. Updated “Temperature Measurement” on page 137.

24. Updated Table 17-3 on page 138.

25. Updated bit R/W descriptions in:

“TIMSK – Timer/Counter Interrupt Mask Register” on page 84,

“TIFR – Timer/Counter Interrupt Flag Register” on page 84,

“TIMSK – Timer/Counter Interrupt Mask Register” on page 95,

“TIFR – Timer/Counter Interrupt Flag Register” on page 96,

“PLLCSR – PLL Control and Status Register” on page 97,

“TIMSK – Timer/Counter Interrupt Mask Register” on page 106,

“TIFR – Timer/Counter Interrupt Flag Register” on page 106,

“PLLCSR – PLL Control and Status Register” on page 107 and

“DIDR0 – Digital Input Disable Register 0” on pa ge 142.

26. Added limitation to “Limitations of debugWIRE” on page 144.

27. Updated “DC Characteristics” on page 166.

28. Updated Table 21-7 on page 171.

29. Updated Figure 21-6 on page 176.

30. Updated Table 21-12 on page 176.

31. Updated Table 22-1 on page 182.

32. Updated Table 22-2 on page 182.

33. Updated Table 22-30 , Table 22-31 and Table 22-3 2 , starting on page 193.

34. Updated Table 22-33 , Table 22-34 and Table 22-3 5 , starting on page 194.

35. Updated Table 22-39 on page 197.

36. Updated Table 22-46 , Table 22-47, Table 22 -4 8 and Table 22-49.

1. All Characterization data moved to “Electrical Characteristics” on page 166.

2. All Register Descriptions are gathered up in seperate sections in the end of each

chapter.

3. Updated Table 11-3 on page 81, Tab l e 11-5 on p age 82, Table 11-6 on page 83 and

Table 20-4 on page 152.

4. Updated “Calibrated Internal Oscillator” on page 27.

5. Updated Note in Table 7-1 on page 35.

6. Updated “System Control and Reset” on page 41.

7. Updated Regis ter Desc rip tion in “I/O Ports” on page 55.

2586NS–AVR–04/11

ATtiny25/45/85

9.7 Rev. 2586H-06/06

9.8 Rev. 2586G-05/06

9.9 Rev. 2586F-04/06

9.10 Rev. 2586E-03/06

8. Updated Features in “USI – Universal Serial Interface” on pag e 11 1.

9. Updated Code Example in “SPI Master Operation Example” on page 113 and “SPI

Slave Operatio n E xam p le” on pa g e 11 4.

10. Updated “Analog Comparator Multiplexed Input” on page 123.

11. Updated Figure 17-1 on page 127.

12. Updated “Signature Bytes” on page 154.

13. Updated “Electrical Characteristics” on page 166.

1. Updated “Calibrated Internal Oscillator” on page 27.

2. Updated Table 6.5.1 on page 32.

3. Added Table 21-2 on page 169.

1. Updated “Internal PLL for Fast Peripheral Clock Generation - clkPCK” on page 24.

2. Updated “Default Clock Source” on page 3 1.

3. Updated “Low-Frequency Crystal Oscillator” on page 29.

4. Updated “Calibrated Internal Oscillator” on page 27.

5. Updated “Clock Output Buffer” on page 32.

6. Updated “Power Management and Sleep Modes” on page 35.

7. Added “Softwar e BOD Disable” on page 36 .

8. Updated Figure 16-1 on page 123.

9. Updated “Bit 6 – ACBG: Analog Comparator Bandgap Select” on page 124.

10. Added note for Table 17-2 on page 129.

11. Updated “Register Summary” on page 205.

1. Updated “Digital Input Enable and Sleep Modes” on page 59.

2. Updated Table 20-16 on page 163.

3. Updated “Ordering Information” on page 209.

1. Updated Features in “Analog to Digital Converter” on page 126.

2. Updated Operation in “Analog to Digital Converter” on page 126 .

3. Updated Table 17-2 on page 138.

4. Updated Table 17-3 on page 138.

5. Updated “Errata” on page 217.

28 2586NS–AVR–04/11

ATtiny25/45/85

9.11 Rev. 2586D-02/06

9.12 Rev. 2586C-06/05

9.13 Rev. 2586B-05/05

9.14 Rev. 2586A-02/05

Initial revision.

1. Upd ate d Table 6-13 on page 30, Table 6-10 on pag e 29, Table 6-3 on page 26,

Table 6-9 on page 29, Table 6-5 on page 27, Table 9-1 on page 50,Table 17-4 on

page 139, Table 20-16 on page 163, Table 21-8 on page 172.

2. Updated “Timer/Counter1 in PWM Mode” on page 89.

3. Updated text “Bit 2 – TO V1 : Tim er /Counter1 Over flo w Fla g” on pa ge 96 .

4. Updated values in “DC Characteristics” on page 166.

5. Updated “Register Summary” on page 205.

6. Updated “Ordering Information” on page 209.

7. Updated Rev B and C in “Errata ATtiny45” on pa ge 217 .

8. All references to power-save mode are removed.

9. Updated Regis ter Adre ss es .

1. Updated “Features” on page 1.

2. Updated Figure 1-1 on page 2.

3. Updated Code Exam p les on page 18 and page 19.

4. Moved “Temperature Measurement” to Section 17.12 page 137.

5. Updated “Register Summary” on page 205.

6. Updated “Ordering Information” on page 209.

1. CLKI added, instances of EEMWE/EEWE renamed EEMPE/EEPE, removed some

TBD.

Removed “Preliminary Description” from “Temperature Measurement” on page 137.

2. Updated “Features” on page 1.

3. Updated Figure 1-1 on page 2 and Figure 8-1 on page 41.

4. Updated Table 7-2 on page 39, Table 10-4 on page 65, Table 10-5 on page 65

5. Updated “Serial Programming Instruction set” on page 157.

6. Updated SPH regis ter in “Instruction Set Summary” on page 207.

7. Updated “DC Characteristics” on page 166.

8. Updated “Ordering Information” on page 209.

9. Updated “Errata” on page 217.

2586NS–AVR–04/11

ATtiny25/45/85

2586NS–AVR–04/11

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