40h logic board pinout

we’ll get a graphic at some point.

for this to be useful, you’ll need datasheets for each of the parts listed here. links would be nice. maybe even a description of what each chip does, and how it relates to the code.

ATMEGA32 pin on the left, IC pin on the right

MAX7221 – SPI LED Driver

PB4 (SS) = LOAD
PB5 (MOSI) = DIN
PB7 (SCK) = CLK

FTDI245R – USB FIFO

PB0 = TXE 
PB1 = RXF 
PB2 = RD 
PB3    = WR 
PD0-7    = D0-7 
PC0    = PWREN

74HC164 – SHIFT (PARALLEL IN SERIAL OUT)

PA5    = A 
PA6    = CLK

74HC165 – SHIFT (SERIAL IN PARALLEL OUT)

PC7    = QH 
PC6    = SH/LD 
PA7    = CLK

other – ADCs

PA0-3    = ADC0-3

Datasheets are available at

ATMEGA32 http://www.atmel.com/dyn/resources/prod_documents/2503S.pdf

Maxim MAX7221 http://pdfserv.maxim-ic.com/en/ds/MAX7219-MAX7221.pdf

FTDI245R http://www.ftdichip.com/Documents/DataSheets/DS_FT245R_v105.pdf

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