Awesome-Retro-Docs/Consoles/NEC - PC Engine-TurboGrafx 16/PC Engine Chip Pinouts.md

PC Engine Chip Pinouts

This data was taken from numerous places. Special thanks to the usual PCE crew: Chris Covell, bt garner, Joann, and also to Backup Technik/GameLab magazine, from which I occasionally learned something new.

Conventions used

Throughout these pages you'll find abbreviations and shorthand terms for a lot of connections. Here's a guide:

Short	Long	Short	Long
Dxx	Data (number)	Axx	Address (number)
/WR	Write Enable	/OE	Output Enable
/CE	Chip Enable	NC	Not Connected
I/O	Input/Output	RAxx	RAM pin#

• Misc ICs are the two RAM chips (numbered 1, 2, and 12 for both)

The NetList

Netlist for each chip.

• Hu6260
• Hu6270
• Hu6280

Other Notes

With apologies, I've forgotten what a lot of these notes mean. It's been a long time since I made them.

Oct 2009: This is the textual description of the circuitry supplying the 21MHz clock signal to the Hu6280/Hu6260.

Something to do with the clock circuit?

Clock -> R163 -> C138 -> R117 -> +5v
      |               +> R118 -> GND
      |               +> Hu6280 10
      |
      +> R164 -> C137 -> R115 -> +5v
		      +> R116 -> GND
		      +> Hu6260 2