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Manuel Conti

ITALY • + Follow Edit Project

Francisco Meza

UNITED STATES OF AMERICA
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Holger OnkelHolgi

GERMANY
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ngr
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Nick Konstantinidis

AUSTRALIA
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8

Top Overlay
Top Copper Layer
Bottom Solder Mask
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Description

Commodore MMC2IEC ver2

### DESCRIPTION

Commodore MMC2IEC

### TECHNICAL DETAILS / COMPONENTS

IC1 = Atmega644 (ATMEGA 644-20 PU)

C3 = 100 nF (X7R-2,5 100N)

R1, R2, R3 = ohm 3K3 (1 / 4W 3.3K)

R4, R5, R6 = ohm 1K8 (1 / 4W 1 , 8K)

alimentazione:

IC2 = 3.0 a reg olatore 3.3V (LP 2950 CZ3,0)

C4 = 2U2 a 4U7 tantalio / ELKO (TANTAL 2,2 / 16)

opzionale:

R7, R8 = 5 60 ohm (1 / 4W 560)

LED1 = verde (LED 3MM GN)

LED2 = Rosso (LED 3MM RT)

opzionale:

C1, C2 = 22 pF a 33pF

Q1 = 8 MHz quarzo

Optional:

2 pulsanti per DiskChange1 e DiskC hange 2

2 interruttore per LW8 / 9 e LW10 / 11 (si può usare anche un ponticello)

Nov 09,2018

2,617 views

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Commodore MMC2IEC ver2

2 Layers PCB 70 x 53 mm FR-4, 1.6 mm, 1, HASL with lead, Green Solder Mask, White silkscreen

2617

8

4

Published: Nov 09,2018

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Topic

DIY Electronics

Computers & USB

commodore c64 c128 mmc2iec

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Richard Sherwood
Where can I get the SD socket from ? most I have seen have different pin configurations.

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Feb 21,20201 Comments
Richard Sherwood 2020-02-21 21:43:55Reply
Ok found out, it's SCDA5A0201. An obsolete part. I think the only way around this now is to buy a cheap breakout board..
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julio arredondo
how to program the atmega?

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Sep 16,20191 Comments
Manuel Conti 2019-11-02 17:25:30Reply
See http://www.pitsch.de/stuff/mmc2iec/index.htm at point 13
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Francisco Meza Aug 25,2024
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Commodore MMC2IEC Ver1 ### DESCRIPTIONCommodore MMC2IEC### TECHNICAL DETAILS / COMPONENTSIC1 = Atmega644 (ATMEGA 644-20 PU)...
Commodore MMC2IEC ver2 ### DESCRIPTIONCommodore MMC2IEC### TECHNICAL DETAILS / COMPONENTSIC1 = Atmega644 (ATMEGA 644-20 PU)...

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