AGBSUBS1-01

This KiCAD PCB project aims to recreate the original AGBSUBS1-01 sub board meant for the original AGB 64M (E201843), 128M (E201850) and 256M (E201868) dev cartridges by Nintendo. Do note however, that it is not meant to be a 1:1 copy of the original PCB.

The board supports the following save types:

• 4kbit EEPROM
• 64kbit EEPROM
• 256kbit SRAM (via FRAM chip)
• 512kbit Flash
• 1Mbit Flash

Ordering PCBs

A ready-to-manufacture set of Gerber files can found here.

Important:

Make sure to order your PCBs with a thickness of 0.6mm or they may not fit into the cartridge. For ease of soldering any fine-pitched components (like J1) ENIG as surface finish is recommended.

BOM:

Reference	Part Number	Description
R1, R2	RC0201FR-0710KL (or equivalent)	10K Ω resistor 0201 (0603 metric)
C1, C2, C3	GRM033R60J104KE19D (or equivalent)	0.1µF capacitor 0201 (0603 metric)
U1	FM18W08-SG	256kbit FRAM
U2	MX29L010TC-15A1 or LE26FV10N1TS / SST39VF512 or SST39LF512	1Mbit Flash / 512kbit Flash
U3	9854 / 9853	64kbit EEPROM / 4kbit EEPROM
J1	AXK640347YG	Mezzanine connector

Note:

Per PCB only populate ONE of U1, U2 or U3

• R2 & C2 should be added if U1 is being populated
• R2 & C3 should be added if U2 is being populated
• R1 & C1 should be added if U3 is being populated

Examples

256kbit FRAM

64kbit EEPROM

1Mbit Flash

Additional Images: