This a simple SD audio player biult with only an 8-pin microcontroller. The ATtinyX5 series (25/45/85) 8-pin AVR microcontroller has two fast PWM outputs in 250kHz carrier frequency. This enables to output a wide frequency range audio signal. I built an audio player with the 8-pin AVR and an SD memory card (SDC). The SDC can be controled with only six lines, two for power supply and four for control signals. It can also be easily attached to 8-pin microcontrollers. The main application of the tiny X5 series AVR seems SMPS and related according to its integrated peripherals. Anyway this audio player is very simple and a few wires to be solderd so that it is suitable for brief soldering work before breakfast. There is an another project based on this project.

asmfunc.S
diskio.h
integer.h
main.c
Makefile_hr
Makefile_mo
Makefile_st
mmc.c
pff.c
pff.h
sd8p_hr.hex
sd8p_mo.hex
sd8p_st.hex
sd8p_st.png
sd8p_hr.png
sd8p_mo.png
Simple SD Audio Player with an 8-pin IC.doc

• We are an exchange download platform that only provides communication channels. The downloaded content comes from the internet. Except for download issues, please Google on your own.
• The downloaded content is provided for members to upload. If it unintentionally infringes on your copyright, please contact us.
• Please use Winrar for decompression tools
• If download fail, Try it againg or Feedback to us.
• If downloaded content did not match the introduction, Feedback to us，Confirm and will be refund.
• Before downloading, you can inquire through the uploaded person information

Nothing．