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urjaman / frser-teensyflash

Teensy 3.1 doing serprog with LPC and SPI (and FWH...)
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Hand Wiring Guide #1

Open xloem opened 2 years ago

xloem commented 2 years ago

I actually breadboarded this, and often don't have an eagle schematic viewer installed.

Here's the wiring as text. If there are mistakes, I am sorry.

DIL8
Teensy 2 - DIL8 1 CS
Teensy 7 - DIL8 5 MOSI
Teensy 8 - DIL8 2 MISO
Teensy 14 - DIL8 6 SCLK
Teensy GND - DIL8 4
Teensy 3.3v - DIL8 3,7,8

PLCC
Teensy 5 - PLCC 17 D3
Teensy 6 - PLCC 13 D0
Teensy 11 - PLCC 24 INIT
Teensy 12 - PLCC 2 RST
Teensy 15 - PLCC 31 CLK
Teensy 20 - PLCC 14 AD1
Teensy 21 - PLCC 15 AD2
Teensy 22 - PLCC 23 LFRAME
Teensy GND - PLCC 3,4,5,6,9,10,11,12,16,28,29,30
Teensy 3.3v - PLCC 7,8,25,32

Capacitor goes between GND and 3.3v.

It would be good to know how big the capacitor should be, haven't found that yet.

xloem commented 2 years ago

There's also a 3D-printed socket plug for prototyping at https://github.com/schlae/32plcc-plug

urjaman commented 11 months ago

I guess 0.1µF (it might work without, just a local bypass for the flash chip), i haven't touched this thing in 8 years and don't have EAGLE around either.

xloem commented 10 months ago

Thanks for your design here, I had lots of fun porting coreboot for my board last year. Not using it right now, but it was a really great project.