attinyX5 Family in all their gory details

ATtinyx5

     ATTiny pinout
                         +-\/-+
                  Reset 1|    |8  VCC
    (pin3) in 0 A3  PB3 2|    |7  PB2 (pin2) out mixed / SCK
    (pin4) in 1 A2  PB4 3|    |6  PB1 (pin1) out 1 / MISO
                    GND 4|    |5  PB0 (pin0) out 0 / MOSI
                         ------

ATtiny25-ATtiny45-ATtiny85_Datasheet

USBASP V2.0


found here

drivers, linux “just works”:, windows is a mess

spencerCOre note his warning
When using a chip for the first time, or after changing the clock speed or BOD settings, you must do “burn bootloader” to set the fuses, even if you are not using the chip with a bootloader

cd /home/yair/.arduino15/packages/arduino/tools/avrdude/6.3.0-arduino14/bin
avrdude -C../etc/avrdude.conf -v -v -v -v -pattiny45 -cusbasp 

successful fuse burn

successful fuse burn

/home/yair/.arduino15/packages/arduino/tools/avrdude/6.3.0-arduino14/bin/avrdude -C/home/yair/.arduino15/packages/arduino/tools/avrdude/6.3.0-arduino14/etc/avrdude.conf -v -v -v -v -pattiny45 -cusbasp 

avrdude: Version 6.3-20171130
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2014 Joerg Wunsch

         System wide configuration file is "/home/yair/.arduino15/packages/arduino/tools/avrdude/6.3.0-arduino14/etc/avrdude.conf"
         User configuration file is "/home/yair/.avrduderc"

         Using Port                    : usb
         Using Programmer              : usbasp
avrdude: usbasp_open("usb")
avrdude: seen device from vendor ->www.fischl.de<-
avrdude: seen product ->USBasp<-
         AVR Part                      : ATtiny45
         Chip Erase delay              : 4500 us
         PAGEL                         : P00
         BS2                           : P00
         RESET disposition             : possible i/o
         RETRY pulse                   : SCK
         serial program mode           : yes
         parallel program mode         : yes
         Timeout                       : 200
         StabDelay                     : 100
         CmdexeDelay                   : 25
         SyncLoops                     : 32
         ByteDelay                     : 0
         PollIndex                     : 3
         PollValue                     : 0x53
         Memory Detail                 :

                                  Block Poll               Page                       Polled
           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack
           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
           eeprom        65     6     4    0 no        256    4      0  4000  4500 0xff 0xff
                                  Block Poll               Page                       Polled
           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack
           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
           flash         65     6    32    0 yes      4096   64     64  4500  4500 0xff 0xff
                                  Block Poll               Page                       Polled
           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack
           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
           signature      0     0     0    0 no          3    0      0     0     0 0x00 0x00
                                  Block Poll               Page                       Polled
           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack
           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
           lock           0     0     0    0 no          1    0      0  9000  9000 0x00 0x00
                                  Block Poll               Page                       Polled
           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack
           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
           lfuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00
                                  Block Poll               Page                       Polled
           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack
           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
           hfuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00
                                  Block Poll               Page                       Polled
           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack
           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
           efuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00
                                  Block Poll               Page                       Polled
           Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack
           ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------
           calibration    0     0     0    0 no          1    0      0     0     0 0x00 0x00

         Programmer Type : usbasp
         Description     : USBasp, http://www.fischl.de/usbasp/

avrdude: usbasp_initialize()
avrdude: usbasp_transmit("USBASP_FUNC_GETCAPABILITIES", 0x00, 0x00, 0x00, 0x00)
avrdude: usbasp_spi_set_sck_period(0)
avrdude: auto set sck period (because given equals null)
avrdude: usbasp_transmit("USBASP_FUNC_SETISPSCK", 0x00, 0x00, 0x00, 0x00)
avrdude: warning: cannot set sck period. please check for usbasp firmware update.
avrdude: usbasp_transmit("USBASP_FUNC_CONNECT", 0x00, 0x00, 0x00, 0x00)
avrdude: usbasp_program_enable()
avrdude: usbasp_transmit("USBASP_FUNC_ENABLEPROG", 0x00, 0x00, 0x00, 0x00)
         <= [00] 
avrdude: AVR device initialized and ready to accept instructions

Reading | avrdude: usbasp_spi_cmd(0x30, 0x00, 0x00, 0x00)...
avrdude: usbasp_transmit("USBASP_FUNC_TRANSMIT", 0x30, 0x00, 0x00, 0x00)
         <= [00] [30] [00] [1e] 
avrdude: usbasp_spi_cmd() => 0x00, 0x30, 0x00, 0x1e
avrdude: usbasp_spi_cmd(0x30, 0x00, 0x01, 0x00)...
avrdude: usbasp_transmit("USBASP_FUNC_TRANSMIT", 0x30, 0x00, 0x01, 0x00)
         <= [00] [30] [00] [92] 
avrdude: usbasp_spi_cmd() => 0x00, 0x30, 0x00, 0x92
################avrdude: usbasp_spi_cmd(0x30, 0x00, 0x02, 0x00)...
avrdude: usbasp_transmit("USBASP_FUNC_TRANSMIT", 0x30, 0x00, 0x02, 0x00)
         <= [00] [30] [00] [06] 
avrdude: usbasp_spi_cmd() => 0x00, 0x30, 0x00, 0x06
################################## | 100% 0.00s

avrdude: Device signature = 0x1e9206 (probably t45)
avrdude: usbasp_close()
avrdude: usbasp_transmit("USBASP_FUNC_DISCONNECT", 0x00, 0x00, 0x00, 0x00)

avrdude done.  Thank you.

goal:to control prescaler

in mindfuckHS code original author has this to say about his clock configuration

/*
Timer 1 is used in this case.
   the prescaler is ck1  /2 and the ocr1 is 60
   see   // see http://www.atmel.com/Images/atmel-2586-avr-8-bit-microcontroller-attiny25-attiny45-attiny85_datasheet.pdf
   See table 13-5
   CS13, CS12, CS11, CS10 = [ 0, 0, 1, 0] is prescaler/2
                  ------
*/

and

// the setup function runs once when you press reset or power the board
void setup() {
 
  DDRB = B00000111;  //could use this
 
  // initialize timer1
  noInterrupts();           // disable all interrupts
 
  TCCR1 = 0;                  //stop the timer
  TCNT1 = 0;                  //zero the timer
 
  OCR1A = 200;     //50           //set the compare value
  OCR1C = 200;       //50         //set the compare value  ??? needed
 
  TIMSK = _BV(OCIE1A);        //interrupt on Compare Match A
 
  TCCR1 = _BV(CTC1) | _BV(CS11); // Start timer, ctc mode, prescaler clk/2
 
  interrupts();             // enable all interrupts
}

conf for atiny45/85

conf for atiny45/85

#------------------------------------------------------------
# ATtiny45
#------------------------------------------------------------

part
     id            = "t45";
     desc          = "ATtiny45";
     has_debugwire = yes;
     flash_instr   = 0xB4, 0x02, 0x12;
     eeprom_instr  = 0xBB, 0xFF, 0xBB, 0xEE, 0xBB, 0xCC, 0xB2, 0x0D,
	             0xBC, 0x02, 0xB4, 0x02, 0xBA, 0x0D, 0xBB, 0xBC,
	             0x99, 0xE1, 0xBB, 0xAC;
     stk500_devcode   = 0x14;
##  avr910_devcode   = ?;
##  Try the AT90S2313 devcode:
     avr910_devcode   = 0x20;
     signature        = 0x1e 0x92 0x06;
     reset            = io;
     chip_erase_delay = 4500;

     pgm_enable       = "1 0 1 0  1 1 0 0    0 1 0 1  0 0 1 1",
                        "x x x x  x x x x    x x x x  x x x x";

     chip_erase       = "1 0 1 0  1 1 0 0    1 0 0 x  x x x x",
                        "x x x x  x x x x    x x x x  x x x x";

    timeout		= 200;
    stabdelay		= 100;
    cmdexedelay		= 25;
    synchloops		= 32;
    bytedelay		= 0;
    pollindex		= 3;
    pollvalue		= 0x53;
    predelay		= 1;
    postdelay		= 1;
    pollmethod		= 1;

    hvsp_controlstack     =
	0x4C, 0x0C, 0x1C, 0x2C, 0x3C, 0x64, 0x74, 0x66,
        0x68, 0x78, 0x68, 0x68, 0x7A, 0x6A, 0x68, 0x78,
        0x78, 0x7D, 0x6D, 0x0C, 0x80, 0x40, 0x20, 0x10,
        0x11, 0x08, 0x04, 0x02, 0x03, 0x08, 0x04, 0x00;
    hventerstabdelay    = 100;
    progmodedelay       = 0;
    hvspcmdexedelay     = 0;
    synchcycles         = 6;
    latchcycles         = 1;
    togglevtg           = 1;
    poweroffdelay       = 25;
    resetdelayms        = 1;
    resetdelayus        = 0;
    hvleavestabdelay    = 100;
    resetdelay          = 25;
    chiperasepolltimeout = 40;
    chiperasetime       = 0;
    programfusepolltimeout = 25;
    programlockpolltimeout = 25;

    ocdrev              = 1;

     memory "eeprom"
         size            = 256;
         page_size       = 4;
         min_write_delay = 4000;
         max_write_delay = 4500;
         readback_p1     = 0xff;
         readback_p2     = 0xff;
         read            = "1  0  1  0   0  0  0  0    0 0 0 x  x x x x",
                           "a7 a6 a5 a4  a3 a2 a1 a0   o o o o  o o o o";

         write           = "1  1  0  0   0  0  0  0    0 0 0 x  x x x x",
                           "a7 a6 a5 a4  a3 a2 a1 a0   i i i i  i i i i";

	loadpage_lo	= "  1   1   0   0      0   0   0   1",
			  "  0   0   0   0      0   0   0   0",
			  "  0   0   0   0      0   0  a1  a0",
			  "  i   i   i   i      i   i   i   i";

	writepage	= "  1   1   0   0      0   0   1   0",
			  "  0   0   x   x      x   x   x   x",
			  " a7  a6  a5  a4     a3  a2   0   0",
			  "  x   x   x   x      x   x   x   x";

	mode		= 0x41;
	delay		= 6;
	blocksize	= 4;
	readsize	= 256;
       ;
     memory "flash"
         paged           = yes;
         size            = 4096;
         page_size       = 64;
         num_pages       = 64;
         min_write_delay = 4500;
         max_write_delay = 4500;
         readback_p1     = 0xff;
         readback_p2     = 0xff;
         read_lo         = "  0   0   1   0    0   0   0   0",
                           "  0   0   0   0    0  a10 a9  a8",
                           " a7  a6  a5  a4   a3  a2  a1  a0",
                           "  o   o   o   o    o   o   o   o";

         read_hi         = "  0   0   1   0    1   0   0   0",
                           "  0   0   0   0    0  a10 a9  a8",
                           " a7  a6  a5  a4   a3  a2  a1  a0",
                           "  o   o   o   o    o   o   o   o";

         loadpage_lo     = "  0   1   0   0    0   0   0   0",
                           "  0   0   0   x    x   x   x   x",
                           "  x   x   x  a4   a3  a2  a1  a0",
                           "  i   i   i   i    i   i   i   i";

         loadpage_hi     = "  0   1   0   0    1   0   0   0",
                           "  0   0   0   x    x   x   x   x",
                           "  x   x   x  a4   a3  a2  a1  a0",
                           "  i   i   i   i    i   i   i   i";

         writepage       = "  0  1  0  0   1  1  0  0",
                           "  0  0  0  0   0 a10 a9 a8",
                           " a7 a6 a5  x   x  x  x  x",
                           "  x  x  x  x   x  x  x  x";

	mode		= 0x41;
	delay		= 6;
	blocksize	= 32;
	readsize	= 256;
       ;
#   ATtiny45 has Signature Bytes: 0x1E 0x92 0x08. (Data sheet 2586C-AVR-06/05 (doc2586.pdf) indicates otherwise!)
     memory "signature"
         size            = 3;
         read            = "0  0  1  1   0  0  0  0   0  0  0  x   x  x  x  x",
                           "x  x  x  x   x  x a1 a0   o  o  o  o   o  o  o  o";
       ;
     memory "lock"
         size            = 1;
         write           = "1 0 1 0  1 1 0 0  1 1 1 x  x x x x",
                           "x x x x  x x x x  1 1 i i  i i i i";
         read            = "0 1 0 1  1 0 0 0  0 0 0 0  0 0 0 0",
                           "0 0 0 0  0 0 0 0  o o o o  o o o o";
        min_write_delay = 9000;
        max_write_delay = 9000;
       ;

     memory "lfuse"
         size            = 1;
         write           = "1 0 1 0  1 1 0 0  1 0 1 0  0 0 0 0",
                           "x x x x  x x x x  i i i i  i i i i";

         read            = "0 1 0 1  0 0 0 0  0 0 0 0  0 0 0 0",
                           "x x x x  x x x x  o o o o  o o o o";
        min_write_delay = 9000;
        max_write_delay = 9000;
       ;

     memory "hfuse"
         size            = 1;
         write           = "1 0 1 0  1 1 0 0  1 0 1 0  1 0 0 0",
                           "x x x x  x x x x  i i i i  i i i i";

         read            = "0 1 0 1  1 0 0 0  0 0 0 0  1 0 0 0",
                           "x x x x  x x x x  o o o o  o o o o";
        min_write_delay = 9000;
        max_write_delay = 9000;
       ;

     memory "efuse"
         size            = 1;
         write           = "1 0 1 0  1 1 0 0  1 0 1 0  0 1 0 0",
                           "x x x x  x x x x  x x x x  x x x i";

         read            = "0 1 0 1  0 0 0 0  0 0 0 0  1 0 0 0",
                           "x x x x  x x x x  o o o o  o o o o";
        min_write_delay = 9000;
        max_write_delay = 9000;
     ;

     memory "calibration"
         size            = 1;
         read            = "0  0  1  1   1  0  0  0    0 0 0 x  x x x x",
                           "0  0  0  0   0  0  0  a0   o o o o  o o o o";
     ;
  ;

#------------------------------------------------------------
# ATtiny85
#------------------------------------------------------------

part
     id            = "t85";
     desc          = "ATtiny85";
     has_debugwire = yes;
     flash_instr   = 0xB4, 0x02, 0x12;
     eeprom_instr  = 0xBB, 0xFF, 0xBB, 0xEE, 0xBB, 0xCC, 0xB2, 0x0D,
	             0xBC, 0x02, 0xB4, 0x02, 0xBA, 0x0D, 0xBB, 0xBC,
	             0x99, 0xE1, 0xBB, 0xAC;
## no STK500 devcode in XML file, use the ATtiny45 one
     stk500_devcode   = 0x14;
##  avr910_devcode   = ?;
##  Try the AT90S2313 devcode:
     avr910_devcode   = 0x20;
     signature        = 0x1e 0x93 0x0b;
     reset            = io;
     chip_erase_delay = 400000;

     pgm_enable       = "1 0 1 0  1 1 0 0    0 1 0 1  0 0 1 1",
                        "x x x x  x x x x    x x x x  x x x x";

     chip_erase       = "1 0 1 0  1 1 0 0    1 0 0 x  x x x x",
                        "x x x x  x x x x    x x x x  x x x x";

    timeout		= 200;
    stabdelay		= 100;
    cmdexedelay		= 25;
    synchloops		= 32;
    bytedelay		= 0;
    pollindex		= 3;
    pollvalue		= 0x53;
    predelay		= 1;
    postdelay		= 1;
    pollmethod		= 1;

    hvsp_controlstack   =
        0x4C, 0x0C, 0x1C, 0x2C, 0x3C, 0x64, 0x74, 0x66,
        0x68, 0x78, 0x68, 0x68, 0x7A, 0x6A, 0x68, 0x78,
        0x78, 0x7D, 0x6D, 0x0C, 0x80, 0x40, 0x20, 0x10,
        0x11, 0x08, 0x04, 0x02, 0x03, 0x08, 0x04, 0x00;
    hventerstabdelay    = 100;
    hvspcmdexedelay     = 0;
    synchcycles         = 6;
    latchcycles         = 1;
    togglevtg           = 1;
    poweroffdelay       = 25;
    resetdelayms        = 1;
    resetdelayus        = 0;
    hvleavestabdelay    = 100;
    resetdelay          = 25;
    chiperasepolltimeout = 40;
    chiperasetime       = 0;
    programfusepolltimeout = 25;
    programlockpolltimeout = 25;

    ocdrev              = 1;

     memory "eeprom"
         size            = 512;
        paged           = no;
        page_size       = 4;
         min_write_delay = 4000;
         max_write_delay = 4500;
         readback_p1     = 0xff;
         readback_p2     = 0xff;
         read            = "1  0  1  0   0  0  0  0    0 0 0 x  x x x a8",
                           "a7 a6 a5 a4  a3 a2 a1 a0   o o o o  o o o o";

         write           = "1  1  0  0   0  0  0  0    0 0 0 x  x x x a8",
                           "a7 a6 a5 a4  a3 a2 a1 a0   i i i i  i i i i";

	loadpage_lo	= "  1   1   0   0      0   0   0   1",
			  "  0   0   0   0      0   0   0   0",
			  "  0   0   0   0      0   0  a1  a0",
			  "  i   i   i   i      i   i   i   i";

	writepage	= "  1   1   0   0      0   0   1   0",
			  "  0   0   x   x      x   x   x  a8",
			  " a7  a6  a5  a4     a3  a2   0   0",
			  "  x   x   x   x      x   x   x   x";

	mode		= 0x41;
	delay		= 12;
	blocksize	= 4;
	readsize	= 256;
       ;
     memory "flash"
         paged           = yes;
         size            = 8192;
         page_size       = 64;
         num_pages       = 128;
         min_write_delay = 30000;
         max_write_delay = 30000;
         readback_p1     = 0xff;
         readback_p2     = 0xff;
         read_lo         = "  0   0   1   0    0   0   0   0",
                           "  0   0   0   0  a11 a10  a9  a8",
                           " a7  a6  a5  a4   a3  a2  a1  a0",
                           "  o   o   o   o    o   o   o   o";

         read_hi         = "  0   0   1   0    1   0   0   0",
                           "  0   0   0   0  a11 a10  a9  a8",
                           " a7  a6  a5  a4   a3  a2  a1  a0",
                           "  o   o   o   o    o   o   o   o";

         loadpage_lo     = "  0   1   0   0    0   0   0   0",
                           "  0   0   0   x    x   x   x   x",
                           "  x   x   x  a4   a3  a2  a1  a0",
                           "  i   i   i   i    i   i   i   i";

         loadpage_hi     = "  0   1   0   0    1   0   0   0",
                           "  0   0   0   x    x   x   x   x",
                           "  x   x   x  a4   a3  a2  a1  a0",
                           "  i   i   i   i    i   i   i   i";

         writepage       = "  0  1  0  0   1   1   0  0",
                           "  0  0  0  0  a11 a10 a9 a8",
                           " a7 a6 a5  x   x  x  x  x",
                           "  x  x  x  x   x  x  x  x";

	mode		= 0x41;
	delay		= 6;
	blocksize	= 32;
	readsize	= 256;
       ;
#   ATtiny85 has Signature Bytes: 0x1E 0x93 0x08.
     memory "signature"
         size            = 3;
         read            = "0  0  1  1   0  0  0  0   0  0  0  x   x  x  x  x",
                           "x  x  x  x   x  x a1 a0   o  o  o  o   o  o  o  o";
       ;
     memory "lock"
         size            = 1;
         write           = "1 0 1 0  1 1 0 0  1 1 1 x  x x x x",
                           "x x x x  x x x x  1 1 i i  i i i i";
         read            = "0 1 0 1  1 0 0 0  0 0 0 0  0 0 0 0",
                           "0 0 0 0  0 0 0 0  o o o o  o o o o";
        min_write_delay = 9000;
        max_write_delay = 9000;
       ;

     memory "lfuse"
         size            = 1;
         write           = "1 0 1 0  1 1 0 0  1 0 1 0  0 0 0 0",
                           "x x x x  x x x x  i i i i  i i i i";

         read            = "0 1 0 1  0 0 0 0  0 0 0 0  0 0 0 0",
                           "x x x x  x x x x  o o o o  o o o o";
        min_write_delay = 9000;
        max_write_delay = 9000;
       ;

     memory "hfuse"
         size            = 1;
         write           = "1 0 1 0  1 1 0 0  1 0 1 0  1 0 0 0",
                           "x x x x  x x x x  i i i i  i i i i";

         read            = "0 1 0 1  1 0 0 0  0 0 0 0  1 0 0 0",
                           "x x x x  x x x x  o o o o  o o o o";
        min_write_delay = 9000;
        max_write_delay = 9000;
       ;

     memory "efuse"
         size            = 1;
         write           = "1 0 1 0  1 1 0 0  1 0 1 0  0 1 0 0",
                           "x x x x  x x x x  x x x x  x x x i";

         read            = "0 1 0 1  0 0 0 0  0 0 0 0  1 0 0 0",
                           "x x x x  x x x x  o o o o  o o o o";
        min_write_delay = 9000;
        max_write_delay = 9000;
     ;

     memory "calibration"
         size            = 1;
         read            = "0  0  1  1   1  0  0  0    0 0 0 x  x x x x",
                           "0  0  0  0   0  0  0  a0   o o o o  o o o o";
     ;
  ;