Jack Berkhout

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9 years ago.

Seeed Arch Max - Function of 36 pin J2 connector?

On the Seeed Arch Max, what's the function of the 36 pin J2 connector?

Question relating to:

Last updated: 20 Apr 2021
The Arch Max is an mbed enabled development board for rapid prototyping. It's based on a STM32F407VET6 microcontrolle with an ARM Cortex-M4F core running at 168MHz. It includes an open …

2 Answers

Gary Z
9 years ago.

Well, from the labeling of the pins - it is primarily a 16 bit external memory interface. There is an I2C connection, some bootx pins (not sure) and the control signals for the external memory buss. Not sure what the main processor chip is on this board.

  • A lot of it depends on how you map the pins in the GPIO matrix that most of these chips have.

Accepted Answer

Hi Gary, thanks, I was thinking about some memory bus, or a way to drive a graphic LCD.

posted by Jack Berkhout 09 May 2015

I like the idea of the graphics LCD. 16bit address is only good for 64K [course you could do a bank select, etc] being old-school it could be used as a memory emulator for old-style computers - ELF II , 8051's, Coco's

posted by Gary Z 09 May 2015
Brian Daniels
9 years ago.

According to the schematic, both pin 1 and pin 36 are 5v.

Here's the schematic: http://www.seeedstudio.com/wiki/images/b/bb/Arch_Max.pdf

Also, looking at the board, it appears the "5v" marking is mean for both of those pins (1 and 36).

Hi Brian, thanks for responding. I did not mean specifically 'pin 36', but the '36 pin' connector, meaning it has 36 pins in total. I wonder what it can be used for.

posted by Jack Berkhout 08 May 2015