Please enter a valid full or partial manufacturer part number with a minimum of 3 letters or numbers

    ATTINY12 Search Results

    SF Impression Pixel

    ATTINY12 Price and Stock

    Microchip Technology Inc ATTINY12-8PU

    IC MCU 8BIT 1KB FLASH 8DIP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey ATTINY12-8PU Tube 424 1
    • 1 $1.72
    • 10 $1.72
    • 100 $1.72
    • 1000 $1.72
    • 10000 $1.72
    		Buy Now
    NAC ATTINY12-8PU Tube 250
    • 1 $1.85
    • 10 $1.85
    • 100 $1.67
    • 1000 $1.5
    • 10000 $1.5
    		Buy Now

    Microchip Technology Inc ATTINY12L-4PU

    IC MCU 8BIT 1KB FLASH 8DIP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey ATTINY12L-4PU Tube 407 1
    • 1 $1.61
    • 10 $1.61
    • 100 $1.61
    • 1000 $1.61
    • 10000 $1.61
    		Buy Now
    Verical ATTINY12L-4PU 5 4
    • 1 -
    • 10 $1.503
    • 100 $1.503
    • 1000 $1.503
    • 10000 $1.503
    		Buy Now
    Arrow Electronics ATTINY12L-4PU 5 7 Weeks 1
    • 1 $1.503
    • 10 $1.503
    • 100 $1.503
    • 1000 $1.503
    • 10000 $1.503
    		Buy Now
    ATTINY12L-4PU 1 7 Weeks 1
    • 1 $1.354
    • 10 $1.354
    • 100 $1.354
    • 1000 $1.354
    • 10000 $1.354
    		Buy Now
    NAC ATTINY12L-4PU Tube 250
    • 1 $1.72
    • 10 $1.72
    • 100 $1.56
    • 1000 $1.4
    • 10000 $1.4
    		Buy Now

    Microchip Technology Inc ATTINY12-8PC

    IC MCU 8BIT 1KB FLASH 8DIP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey ATTINY12-8PC Tube
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now

    Microchip Technology Inc ATTINY12-8PI

    IC MCU 8BIT 1KB FLASH 8DIP
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey ATTINY12-8PI Tube
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now

    Microchip Technology Inc ATTINY12-8SI

    IC MCU 8BIT 1KB FLASH 8SOIC
    Distributors Part Package Stock Lead Time Min Order Qty Price Buy
    DigiKey ATTINY12-8SI Tube
    • 1 -
    • 10 -
    • 100 -
    • 1000 -
    • 10000 -
    		Buy Now
    Find more ATTINY12 price and stock on Findchips.com

    ATTINY12 Datasheets (57)

    Part ECAD Model Manufacturer Description Curated Type PDF
    ATtiny12 Atmel tiny10/tiny11/tiny12 Original PDF
    ATtiny12 Atmel 8-bit AVR Microcontroller with 1K Byte Flash Original PDF
    ATtiny12 Unknown 8-bit Original PDF
    ATTINY12 Unknown Original PDF
    ATtiny12 Ramtron International 8-bit Original PDF
    ATTINY12-8PC Atmel 5V, 8MHZ, PDIP, COM TEMP(MCU AVR) Original PDF
    ATtiny12-8PC Atmel 8-bit AVR Microcontroller with 1K Byte Flash Original PDF
    ATTINY12-8PI Atmel 5V, 8MHZ, PDIP, IND TEMP(MCU AVR) Original PDF
    ATtiny12-8PI Atmel 8-bit AVR Microcontroller with 1K Byte Flash Original PDF
    ATTINY12-8PI Atmel 8-bit AVR Microcontroller with 1K Bytes Flash Original PDF
    ATTINY12-8PU Atmel 5V, 8MHz, PDIP, IND TEMP, GREEN(MCU AVR) Original PDF
    ATtiny12-8PU Atmel 1-Kbyte In-System programmable Flash Program Memory, 32 byte SRAM, 64 Byte EEPROM, Up to 8 MIPS throughput at 8 Mhz. Original PDF
    ATtiny12-8SC Atmel 8-bit AVR Microcontroller with 1K Byte Flash Original PDF
    ATTINY12-8SC Atmel 5V, 8MHZ, SOIC, COM TEMP(MCU AVR) Original PDF
    ATTINY12-8SI Atmel 5V, 8MHZ, SOIC, IND TEMP(MCU AVR) Original PDF
    ATtiny12-8SI Atmel 8-bit AVR Microcontroller with 1K Byte Flash Original PDF
    ATTINY12-8SI Atmel 8-bit AVR Microcontroller with 1K Bytes Flash Original PDF
    ATTINY12-8SU Atmel 5V, 8MHz, SOIC, IND TEMP, GREEN(MCU AVR) Original PDF
    ATtiny12-8SU Atmel 1-Kbyte In-System programmable Flash Program Memory, 32 byte SRAM, 64 Byte EEPROM, Up to 8 MIPS throughput at 8 Mhz. Original PDF
    ATtiny12L Atmel 8-bit Microcontroller With 1k Bytes Flash Original PDF

    ATTINY12 Datasheets Context Search

    Catalog Datasheet MFG & Type PDF Document Tags

    ATTINY13 programming

    Abstract: ATtiny13 4297a 4297a adc "AVR132 - Enhanced Watchdog Timer"
    Text: AVR092: Replacing ATtiny11/12 by ATtiny13 Features • • • • • • • • • ATtiny11 and ATtiny12 Errata Corrected in ATtiny13 Changes to Bit and Register Names Changes to Interrupt Vector Oscillator Options Enhanced Watchdog Timer Changes to EEPROM Writing


    Original     		PDF AVR092: ATtiny11/12 ATtiny13 ATtiny11 ATtiny12 ATtiny13. ATtiny13 ATTINY13 programming 4297a 4297a adc "AVR132 - Enhanced Watchdog Timer"

    isp stk300 programmer

    Abstract: STK300 atmega32 LED project using avr STK300 STK-300 at90s8515 c programming AT90S8535 AT90S2313 AT90S2323 AT90S4433
    Text: Device Support: ◆ ATtiny12 I ◆ ATtiny15 (I) ◆ ATtiny22 (I) ◆ AT90S1200 (I) ◆ AT90S2313 (I) ◆ AT90S2323 (I) ◆ AT90S2343 (I) ◆ AT90S4433 (I) ◆ AT90S8535 (I) ◆ AT90S8515 (I) ◆ ATmega16 (I) ◆ ATmega32 (I) ◆ ATmega103 (A) ◆ ATmega323(I)


    Original     		PDF ATtiny12 ATtiny15 ATtiny22 AT90S1200 AT90S2313 AT90S2323 AT90S2343 AT90S4433 AT90S8535 AT90S8515 isp stk300 programmer STK300 atmega32 LED project using avr STK300 STK-300 at90s8515 c programming AT90S8535 AT90S2313 AT90S2323 AT90S4433

    Atmel AT90S8515A

    Abstract: AT90S8515a Atmel AVR AT90S1200A Atmel EEPROM ordering avr studio 5 AT90LS2323 AT90LS2333 AT90LS2343 AT90S
    Text: M I CROCONT RO LLE RS ICEPRO The AVR ICEPRO is a real-time In-Circuit Emulator for all AVR devices up to 8K bytes of program memory. The ICEPRO interfaces with AVR Studio, Atmel’s professional front-end tool for high-level language and assembly level-debugging.


    Original     		PDF 09/99/xM Atmel AT90S8515A AT90S8515a Atmel AVR AT90S1200A Atmel EEPROM ordering avr studio 5 AT90LS2323 AT90LS2333 AT90LS2343 AT90S

    1006D

    Abstract: 854300
    Text: Features • Utilizes the AVR RISC Architecture • High-performance and Low-power 8-bit RISC Architecture • • • • • • • • – 90 Powerful Instructions – Most Single Clock Cycle Execution – 32 x 8 General Purpose Working Registers – Up to 8 MIPS Throughput at 8 MHz


    Original     		PDF ATtiny12) ATtiny11/12) ATtiny12 1006D 854300

    sandisk micro sd

    Abstract: digital clock using at89s52 microcontroller stepper motor control with avr application notes sandisk micro sd card pin configuration vhdl code for rs232 receiver STK 435 power amplifier Microcontroller AT89S52 vhdl code for ofdm Microcontroller AT89S52 40 pin fingerprint scanner circuit
    Text: Atmel Corporation Atmel Operations Corporate Headquarters 2325 Orchard Parkway San Jose, CA 95131 TEL 1 408 441-0311 FAX 1 (408) 487-2600 Memory 2325 Orchard Parkway San Jose, CA 95131 TEL 1 (408) 441-0311 FAX 1 (408) 436-4314 Regional Headquarters Microcontrollers


    Original     		PDF CH-1705 3271B sandisk micro sd digital clock using at89s52 microcontroller stepper motor control with avr application notes sandisk micro sd card pin configuration vhdl code for rs232 receiver STK 435 power amplifier Microcontroller AT89S52 vhdl code for ofdm Microcontroller AT89S52 40 pin fingerprint scanner circuit

    DIAGRAM AVR GENERATOR

    Abstract: free DIAGRAM AVR GENERATOR DIAGRAM AVR ac GENERATOR AVR 200 AT90S1200 AT90S2313 S2313 at90em04 ATadap3300 avr studio 4.6
    Text: ICE 200 . User Guide Table of Contents Section 1 Preface – Read this First . 1-1 1.1 1.2 1.3 1.4 1.5 About this Manual .1-1


    Original     		PDF 07/99/5M DIAGRAM AVR GENERATOR free DIAGRAM AVR GENERATOR DIAGRAM AVR ac GENERATOR AVR 200 AT90S1200 AT90S2313 S2313 at90em04 ATadap3300 avr studio 4.6

    ATMEL 736

    Abstract: advantages of microcontroller avr AVR051 2507a
    Text: AVR051: Set-up and Use the External RC Oscillator Features • Low Power Consumption. • Wide Frequency Range 100 kHz - 12 MHz • Programmable Frequency Range to Minimize Current Consumption for a desired 8-bit RISC Microcontroller Frequency Applicability


    Original     		PDF AVR051: ATtiny11, ATtiny12, ATtiny28, ATmega163, ATmega323. ATMEL 736 advantages of microcontroller avr AVR051 2507a

    avr microcontroller

    Abstract: AT90S8515a ATMEL AT90S8515A AT90S2333 AT90S4433 AT90S2313 atmel avr avr spi avr studio 5 In-Circuit-Emulator
    Text: M ICROCONTROLLERS ICE10 IN-CIRCUIT EMULATOR The AVR ICE10 is a real-time In-Circuit Emulator for all AVR devices up to 8K bytes of program memory. The ICE10 interfaces AVR Studio , Atmel’s professional front-end tool for high-level language and assembly-level


    Original     		PDF ICE10 ICE10 ICE10. avr microcontroller AT90S8515a ATMEL AT90S8515A AT90S2333 AT90S4433 AT90S2313 atmel avr avr spi avr studio 5 In-Circuit-Emulator

    AVR 200

    Abstract: avr studio 5 AVR MICROCONTROLLER In-Circuit-Emulator ATICE200 AT90LS4434 atmel ice AVR 8 BIT MICROCONTROLLERS avr pin configuration AVR Studio
    Text: M ICROCONTROLLERS ICE 200 IN-CIRCUIT EMULATOR The AVR ICE 200 In-Circuit Emulator is the perfect choice! A real-time In-Circuit Emulator based on a highly integrated AVR emulator chip. The ICE 200 speeds up the co-development of software and hardware for the


    Original     		PDF 1662B 06/02/0M ATICE200. AVR 200 avr studio 5 AVR MICROCONTROLLER In-Circuit-Emulator ATICE200 AT90LS4434 atmel ice AVR 8 BIT MICROCONTROLLERS avr pin configuration AVR Studio

    ATTINY26L-8PJ

    Abstract: TQFP32 footprint 4061B IC ATMEGA16 ATMEGA8 rs232 atmega32 microcontroller interface with lcd atmega128 QFN64 ATMEGA88-20MU MLF32 tiny11 ATMEGA168-20AI
    Text: 4061B.qxd 26/08/2004 16:23 Page 1 AV R M I C R O C O N T R O L L E R S September 2004 QUICK REFERENCE GUIDE 4061B.qxd 26/08/2004 15:06 Page 3 QUICK REFERENCE GUIDE AVR Introduction AVR delivers unmatched flexibility. It combines the most code-efficient architecture for C and assembly


    Original     		PDF 4061B 16-bit CH-1705 4061B-AVR-09/04/1M ATTINY26L-8PJ TQFP32 footprint IC ATMEGA16 ATMEGA8 rs232 atmega32 microcontroller interface with lcd atmega128 QFN64 ATMEGA88-20MU MLF32 tiny11 ATMEGA168-20AI

    winbond 25080

    Abstract: 29F200BB 16LF648A 89V51RD2 18f252 89S51 National SEMICONDUCTOR GAL16V8 29sf040 12f675 29F400BB
    Text: Dataman-S4 Version 3.00 <ALL> Devices List - 1. S4 8 bit EPROM lib. V3.00 - AMD 27010


    Original     		PDF 2732B 27C100 27HB010 27C256 27HC64 27C128 27C040 7128A winbond 25080 29F200BB 16LF648A 89V51RD2 18f252 89S51 National SEMICONDUCTOR GAL16V8 29sf040 12f675 29F400BB

    CS01

    Abstract: CS02 MS-001 attiny10
    Text: Features • Utilizes the AVR RISC Architecture • High-performance and Low-power 8-bit RISC Architecture • • • • • • • • • – 90 Powerful Instructions - Most Single Clock Cycle Execution – 32 x 8 General Purpose Working Registers – Up to 8 MIPS Throughput at 8 MHz


    Original     		PDF ATtiny10) ATtiny12) ATtiny11/12) 1006AS 04/99/xM CS01 CS02 MS-001 attiny10

    Device-List

    Abstract: cf745 04 p 24LC211 lattice im4a3-32 CF775 MICROCHIP 29F008 im4a3-64 ks24c01 ep320ipc ALL-11P2
    Text: Device List Adapter List Converter List for ALL-11 JUL. 2000 Introduction T he Device List lets you know exactly which devices the Universal Programmer currently supports. The Device List also lets you know which devices are supported directly by the standard DIP socket and which


    Original     		PDF ALL-11 Z86E73 Z86E83 Z89371 ADP-Z89371/-PL Z8E000 ADP-Z8E001 Z8E001 Device-List cf745 04 p 24LC211 lattice im4a3-32 CF775 MICROCHIP 29F008 im4a3-64 ks24c01 ep320ipc ALL-11P2

    49lf004a

    Abstract: tv crt charger diagram BC163 BC219 ICH4-M BCM4401 MAX1999 BC264 wistron SC1U50V5ZY
    Text: A B DC/DC IMVP4 Switching Power 32 ISL6218 4 INPUTS OUTPUT DCBATOUT VCC_CORE MAX1715 DCBATOUT L3:SIGNAL1 4 34 2D5V_S3 03249-SC ICS950810 L5:VCC L6:GND HOST BUS 3 CRT 100MHz OUTPUTS L7:SIGNAL3 13 L8:COMPONENT DDR DRAM Socket *2 DDR 266/333 HDD Montara-GM+ CH7011


    Original     		PDF ISL6218 ICS950810 43E01 03249-SC MAX1715 100MHz MAX1645 CH7011 DMA-100 TPS2220A 49lf004a tv crt charger diagram BC163 BC219 ICH4-M BCM4401 MAX1999 BC264 wistron SC1U50V5ZY

    SB315

    Abstract: gd2 ec16 BC327 C327 DVD remote controL HDT SCD22U vt8237 16-2-2C STM-M50FW040 24C256 foxconn
    Text: A B C D Gannet Block Diagram 3 CLK GEN AMD CPU 11,12,13 UNBUFFERED DDR SODIMM Athlon 64 4 11,12,13 UNBUFFERED DDR SODIMM 31 1394 Conn 32 RICOH R5C554 Power Switch 5532V PCMCIA 2 SLOTS Support TypeIII 8,9,10 VGA VIA 2* Slot Cardbus + 2* 1394 Ports K8T800 AGTL+ CPU I/F


    Original     		PDF CY28331-2 200-PIN 16b/8b DDR-SDRAM17 K4D263238A-GC36 R5C554 K8T800 GND18 42P26 GND26 SB315 gd2 ec16 BC327 C327 DVD remote controL HDT SCD22U vt8237 16-2-2C STM-M50FW040 24C256 foxconn

    C2P1

    Abstract: foxconn VT1617A VT1617 VIA vt8237 DY-SE220U2VDM-6 WISTRON power sequence HP connectors Wistron Corporation Wistron Corporation Egret
    Text: A B C D E EGRET Block Diagram 200-PIN DDR SODIMM CLK GEN ICS ICS950405 4 AMD CPU DDR 3 33/400 DDR x2 Claw Hammer K8 PCB Layer Stackup 8,9,10 3 L1: Signal 1 L2: GND L3: Signal 2 L4: Signal 3 L5: VCC L6: Signal 4 4,5,6,7 TV Encoder VIA VT1623M HyperTransport


    Original     		PDF 200-PIN ICS950405 16b/8b TPS2224AP VT1623M K8N800 VT1631 MAX1645BEEI 66MHZ C2P1 foxconn VT1617A VT1617 VIA vt8237 DY-SE220U2VDM-6 WISTRON power sequence HP connectors Wistron Corporation Wistron Corporation Egret

    rg82855pm

    Abstract: RG82855PM 855PM SL752 subwoofer preamp diagram SL752 Intel RG82855pm wistron BC547 audio WISTRON power sequence Intel 855PM Odem ICH4-M B220LFA
    Text: Mobil CPU Banias uFCPGA CRT TV OUT 16 CARDBUS & 1394 TI 4510 ATI M10-CSP64 LVDS LCD 12 VGA 16 dual channel 31 LAN L4:VCC L5:Signal 2 L6:GND L7:Signal 3 L8:Component ATA 66/100 left side ICH4-M RTL 8101L PRIMARY IDE 3/5V DC/DC TXFM 17,18,19 USB2.0 PORT*3


    Original     		PDF M10-CSP64 66MHz 400MHz 855PM 266/333MHz 44K01 33MHz 11b/a 66MHz 8101L rg82855pm RG82855PM 855PM SL752 subwoofer preamp diagram SL752 Intel RG82855pm wistron BC547 audio WISTRON power sequence Intel 855PM Odem ICH4-M B220LFA

    BC327 C327

    Abstract: r4571 diagram of epson t13 printer Wistron Corporation BC246 49LF004A-33 2N7002 VISHAY bc264 cross reference circuit diagram of epson t13 printer G913C-U
    Text: A B C D 07. 11 2003 Mobile CPU CLK GEN. ICS 4 950813YGT 3 DDR SDRAM 200/266 MHZ SO-DIMM*2 10,11,12 L8:COMPONENT LCD 14 MediaBay Socket RICOH R5C593 66MHz HUB I/F AC'97 CODEC ICH4-M CS4299 PCI BUS Power Switchs G576 GMT PCMCA SLOT 22 1394 CONN 20,21 (CIRRUS) 25


    Original     		PDF 950813YGT 48T01 48T02 02227-SD CONN13 400MHz CH7011 R5C593 MAX1999/MAX1645 66MHz BC327 C327 r4571 diagram of epson t13 printer Wistron Corporation BC246 49LF004A-33 2N7002 VISHAY bc264 cross reference circuit diagram of epson t13 printer G913C-U

    CB-1410 A1

    Abstract: 12c675 foxconn Intel p45 motherboard intel p43 MOTHERBOARD pcb CIRCUIT diagram montara gml SCD1U50V5KX 1645b Wistron Corporation MOTHERBOARD pcb CIRCUIT diagram
    Text: A B C D E B2M Block Diagram 4 P4-M Northwood P4-M Celeron4, 5 3 HOST BUS DDR*2 9,10 G768D 100MHz GMCH Montara-GML 266MHz SC MAX1631 INPUTS Project Code 91.49T01.001 M/B 48.45Z01.0SC 02216-SC Mobile CPU CLK GEN. ICS 94239 2003/01/03 SYSTEM DC/DC CRT CONN 17


    Original     		PDF MAX1631 100MHz 49T01 45Z01 02216-SC G768D MAX1715 266MHz MAX1718/1887 CM2843ACIM25 CB-1410 A1 12c675 foxconn Intel p45 motherboard intel p43 MOTHERBOARD pcb CIRCUIT diagram montara gml SCD1U50V5KX 1645b Wistron Corporation MOTHERBOARD pcb CIRCUIT diagram

    isl6247cr

    Abstract: ATI RADEON 9700 IXP150 acer aspire 1660 acer extensa motherboard bios jumper settings MHT2040AT YUHINA acer travelmate driver B154Ew01 graphic card circuit diagram ATI RADEON
    Text: Aspire 1660 Series Service Guide PRINTED IN TAIWAN Revision History Please refer to the table below for the updates made on Aspire 1660 service guide. Date II Chapter Updates Copyright Copyright 2004 by Acer Incorporated. All rights reserved. No part of this publication may be reproduced,


    Original     		PDF

    U2140B

    Abstract: U2069B AT93C46Y1 AT87C52X2-SLRUM U4257BM-N U2069B-MFP AT89C2051-24SU U6431B atar862n AT80251G2D-SLRUM
    Text: Pb Part Num AT17F040-30CC AT17F040-30CI AT17F040-30JC AT17F040-30JI AT17F040A-30CC AT17F040A-30JC AT17F040A-30JI AT17F080-30BJC AT17F080-30BJI AT17F080-30CC AT17F080-30CI AT17F080-30JC AT17F080-30JI AT17F080A-30CC AT17F080A-30JC AT17F080A-30JI AT17F16-30CC


    Original     		PDF AT17F040-30CC AT17F040-30CI AT17F040-30JC AT17F040-30JI AT17F040A-30CC AT17F040A-30JC AT17F040A-30JI AT17F080-30BJC AT17F080-30BJI AT17F080-30CC U2140B U2069B AT93C46Y1 AT87C52X2-SLRUM U4257BM-N U2069B-MFP AT89C2051-24SU U6431B atar862n AT80251G2D-SLRUM

    Atmel AVR

    Abstract: mpq-avr avr programmer ATMEGA324A ATXMEGA64B3 ATXMEGA256C3 ATTINY44
    Text: Systems RPM January, 2014 Corporation Redmond, Washington USA MPQ-AVR Four Port In-System Programmer for Atmel AVR Microcontrollers The MPQ-AVR is a member of RPM’s family of dedicated in-system device programmers. It supports programming of Atmel’s AT90, ATtiny, ATmega and


    Original     		PDF Progrxmega32D4, ATxmega64D4, ATxmega128D4, ATxmega32D3, ATxmega64D3, ATxmega128D3, ATxmega192D3, ATxmega256D3, ATxmega384D3, ATxmega16A4, Atmel AVR mpq-avr avr programmer ATMEGA324A ATXMEGA64B3 ATXMEGA256C3 ATTINY44

    4x4 keypad c code atmega16

    Abstract: ATmega16 IR remote control 4x4 keypad c code atmega32 4x4 keyboard for atmega32 AVR atmega16 matrix keypad interface gps with AVR atmega128 AVR atmega16 led matrix atmega 8 c coding AVR atmega8515 led matrix atmega 8 c coding for motor control
    Text: AVR Flash Microcontroller ATMEL CORPORATION AVR Flash Microcontroller: Product Line Reference September 2003 Edition Table of Contents 1 2 3 4 ATtiny Product Family . 2


    Original     		PDF

    ATTINY13 application examples

    Abstract: STK200 ATtiny13 code examples AVR ISP programmer port atmega8 source code ATmega8515 code examples STK200 circuit C code for ATMEGA16 atmega32 microcontroller interface with lcd AVR ATMEGA8 timers
    Text: Industry Proven Classic Hardware ISP for all Windows Platforms Application Builder AVR Studio 3 and AVRStudio4 included AVREdit and AVRGCC included STK200 A complete Starter Kit for AVR microcontrollers The best starter kit ever Contents: Target board Board Schematics


    Original     		PDF STK200 STK200 ATmega64 ATmega169 STK300: ATmega103 ATmega128 ATTINY13 application examples ATtiny13 code examples AVR ISP programmer port atmega8 source code ATmega8515 code examples STK200 circuit C code for ATMEGA16 atmega32 microcontroller interface with lcd AVR ATMEGA8 timers