ATmega USBasp SMD

1 year ago

Profile:USB ISP/TPI programmer stick for Atmel AVR microcontrollers

Open source license: CC-BY-SA 3.0

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Description

USBasp - USB ISP/TPI programmer stick for Atmel AVR microcontrollers with 5V and 3.3V target voltage based on the design by Thomas Fischl. More information can be found at https://www.fischl.de/usbasp/. Windows users may need to install a driver. Of course this is not necessary for linux and mac users. Close SELFPROG and TGTPWR jumper when uploading firmware. If you are burning a fresh microcontroller, close the Slow Serial Clock jumper (SLOWCLK) since they are factory programmed for internal 1MHz oscillator. This is not necessary if the improved firmware by nerdralph (https://github.com/nerdralph/usbasp) is used. Close Taget Power jumper (TGTPWR) to power target device from the USBasp.

Jumper Function
TGTVCC Close to power target device via ISP header
SELFPRG Close to upload firmware to USBasp itself via ISP header
SLOWCLK Close to upload firmware to target device with slow speed (necessary for factory-new microcontrollers); not needed with improved firmware

IMG_20200807_142132_x.jpgIMG_20200807_142211_x.jpgIMG_20200816_174830_x.jpgIMG_20200816_174955_x.jpg

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This work is licensed under Creative Commons Attribution-ShareAlike 3.0 Unported License. (http://creativecommons.org/licenses/by-sa/3.0/)

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USBaspStick

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USBaspStick_v1.0

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BOM

ID Name Designator Footprint Quantity
1 12MHz X1 OSC-SMD_3225 1
2 MSK-11027 KEY1 SW_SMD_MSK-11027 1
3 3V6 D1,D2 ZENER-SOD-123 2
4 USB-Plug USB USB-M-48 1
5 68R R3,R5 0603 2
6 1k5 R4,R2,R1 0603 3
7 AMS1117-3.3 U3 SOT-223 1
8 ATMEGA8A-AU U1 TQFP-32_7X7X08P 1
9 10k R6 0603 1
10 USB LED2 LED0603 1
11 PRG LED1 LED0603 1
12 ICSP-6 ICSP ICSP-6-SIDE 1
13 4u7 C10,C7 0603 2
14 100n C2,C1,C3 0603 3
15 22p C6,C5 0603 2
16 1u C9,C8 0603 2
17 47u C4 1206 1
18 TGTPWR JP1 HEADER_2X1 1
19 SLOWCLK JP3 HEADER_2X1 1
20 SELFPRG JP2 HEADER_2X1 1

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