Famicom cartridge dimensions: Difference between revisions

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Each cartridge type varies in how the 60 pin card edge is implemented. The pin pitch is 2.54mm, with 2 rows of 30 pads. Each pad may be uniform in dimensions, or slightly thicker and longer for power/ground.  
Each cartridge type varies in how the 60 pin card edge is implemented. The pin pitch is 2.54mm, with 2 rows of 30 pads. Each pad may be uniform in dimensions, or slightly thicker and longer for power/ground.  


=== HVC-TxROM ===
=== HVC-Ax/Fx/Px/Sx/TxROM (MMC1-4 mapper boards) ===
This outline is based on measurements from a HVC-TGROM-01 type cartridge PCB, compatible with any cartridge shell that supports any HVC-AxROM / FxROM / PxROM / SxROM / TxROM/ PCB or similar/bigger. These measurements are measured with vernier calipers with 1/128 inch accuracy. Note that this outline also details where the soldermask ends for the card edge.
This outline is based on measurements from a HVC-TGROM-01 type cartridge PCB, compatible with any cartridge shell that supports any HVC-Ax/Fx/Px/Sx/TxROM PCB or similar/bigger. These measurements are measured with vernier calipers with 0.05 mm accuracy. Note that this outline also details where the soldermask ends for the card edge.


[[File:HVC-TGROM-01-board.svg|frame|center|Technical drawing of the outlines of an HVC-TGROM-01 type cartridge PCB.]]
[[File:HVC-TGROM-01-board.svg|frame|center|Technical drawing of the outlines of an HVC-TGROM-01 type cartridge PCB.]]
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!colspan="3"|Dimensions
!colspan="3"|Dimensions
|-
|-
|Designator ||Dimensions in mm (±0.5 mm) ||Description
|Designator ||Dimensions in mm (±0.05 mm) ||Description
|-
|-
|A ||90.4875 ||Board width
|A ||90 ||Board width
|-
|-
|A.1 ||78.58125 ||Card edge width
|A.1 ||78.4 ||Card edge width
|-
|-
|A.2 ||80.9625 ||Notched width
|A.2 ||81 ||Notched width
|-
|-
|A.2.1 ||42.8625 ||Inset board width 1
|A.2.1 ||43 ||Inset board width 1
|-
|-
|A.2.2 ||32.40625 ||Inset board width 2
|A.2.2 ||33 ||Inset board width 2
|-
|-
|B ||46.434375 ||Board height
|B ||46.1 ||Board height
|-
|-
|B.1 ||23.217188 ||Inset board height 1
|B.1 ||23.2 ||Inset board height 1
|-
|-
|B.2 ||21.034375 ||Inset board height 2
|B.2 ||20.9 ||Inset board height 2
|-
|-
|B.3 ||10.31875 ||Card edge depth
|B.3 ||10.7 ||Card edge depth
|-
|-
|C ||1.2 ||Board thickness
|C ||1.2 ||Board thickness
|-
|-
|D.1 ||2.38125 ||Card edge base to pad top
|D.1 ||3 ||Card edge base to pad top
|-
|-
|D.2 ||3.571875 ||Card edge base to soldermask keepout
|D.2 ||4 ||Card edge base to soldermask keepout
|-
|-
|D.3 ||7.14375 ||Power pad height
|D.3 ||6.7 ||Power pad height
|-
|-
|D.4 ||6.35 ||Signal pad height
|D.4 ||5.7 ||Signal pad height
|-
|-
|E.1 ||0.873125 ||Power pad to card edge side
|E.1 ||0.57 ||Power pad to card edge side
|-
|-
|E.2 ||1.666875 ||Signal pad to card edge side
|E.2 ||1.57 ||Signal pad to card edge side
|-
|-
|E.3 ||2.38125 ||Power pad width
|E.3 ||2.6 ||Power pad width
|-
|-
|E.4 ||1.5875 ||Signal pad width
|E.4 ||1.6 ||Signal pad width
|-
|-
|E.5 ||0.9525 ||Space between pads
|E.5 ||0.94 ||Space between pads
|-
|-
|E.6 ||2.54 ||Pad spacing
|E.6 ||2.54 ||Pad spacing
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''TODO: measure and publish dimensions''
''TODO: measure and publish dimensions''


=== HVC-NROM/CNROM ===
=== HVC-N/Cx/Gx/UxROM 01-05 (discrete mapper boards) ===
This outline is based on measurements from a HVC-CNROM-256K-01 type cartridge PCB, augmented with dimensions from a HVC-TGROM-01 type PCB. This is compatible with any cartridge shell that supports any HVC-CNROM / GNROM / UNROM 01-05 / etc. PCB or similar/bigger. These measurements are measured with vernier calipers with 1/128 inch accuracy. Note that this outline also details where the soldermask ends for the card edge.
This outline is based on measurements from a HVC-CNROM-256K-01 type cartridge PCB, augmented with dimensions from a HVC-TGROM-01 type PCB. This is compatible with any cartridge shell that supports any HVC-N/Cx/Gx/UxROM 01-05 PCB or similar/bigger. These measurements are measured with vernier calipers with 0.05 mm accuracy. Note that this outline also details where the soldermask ends for the card edge.


[[File:HVC-CNROM-256K-01-board.svg|frame|center|Technical drawing of the outlines of an augmented HVC-CNROM-256K-01 type cartridge PCB.]]
[[File:HVC-CNROM-256K-01-board.svg|frame|center|Technical drawing of the outlines of an augmented HVC-CNROM-256K-01 type cartridge PCB.]]
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|E.6 ||2.54 ||Pad spacing
|E.6 ||2.54 ||Pad spacing
|}
|}
[[Category:Hardware]]

Latest revision as of 15:34, 18 September 2022

This page documents the dimensions of common Famicom cartridges, including their cartridge shell and their corresponding PCB type. The source files are open-source and available on Github.

TODO: identify more cartridge shell forms

Famicom cartridge shell outline

Small cartridge form

HVC-TxROM

TODO: measure and publish dimensions

HVC-NROM/CNROM

TODO: measure and publish dimensions

Large cartridge form

HVC-ExROM

TODO: measure and publish dimensions

Miscellaneous cartridge forms

TODO: document and measure other forms

Famicom cartridge PCB outline

These outlines of different cartridge PCB types are based on the most space-filling variant, so that designers may choose to cut off unused portions that their designs may not need. Some outlines of cartridges with no maximally space filling PCB are thus modified to be such, with measurements being based on adjacent types made by the same producer.

Each cartridge type varies in how the 60 pin card edge is implemented. The pin pitch is 2.54mm, with 2 rows of 30 pads. Each pad may be uniform in dimensions, or slightly thicker and longer for power/ground.

HVC-Ax/Fx/Px/Sx/TxROM (MMC1-4 mapper boards)

This outline is based on measurements from a HVC-TGROM-01 type cartridge PCB, compatible with any cartridge shell that supports any HVC-Ax/Fx/Px/Sx/TxROM PCB or similar/bigger. These measurements are measured with vernier calipers with 0.05 mm accuracy. Note that this outline also details where the soldermask ends for the card edge.

Technical drawing of the outlines of an HVC-TGROM-01 type cartridge PCB.
Dimensions
Designator Dimensions in mm (±0.05 mm) Description
A 90 Board width
A.1 78.4 Card edge width
A.2 81 Notched width
A.2.1 43 Inset board width 1
A.2.2 33 Inset board width 2
B 46.1 Board height
B.1 23.2 Inset board height 1
B.2 20.9 Inset board height 2
B.3 10.7 Card edge depth
C 1.2 Board thickness
D.1 3 Card edge base to pad top
D.2 4 Card edge base to soldermask keepout
D.3 6.7 Power pad height
D.4 5.7 Signal pad height
E.1 0.57 Power pad to card edge side
E.2 1.57 Signal pad to card edge side
E.3 2.6 Power pad width
E.4 1.6 Signal pad width
E.5 0.94 Space between pads
E.6 2.54 Pad spacing

HVC-ExROM

TODO: measure and publish dimensions

HVC-N/Cx/Gx/UxROM 01-05 (discrete mapper boards)

This outline is based on measurements from a HVC-CNROM-256K-01 type cartridge PCB, augmented with dimensions from a HVC-TGROM-01 type PCB. This is compatible with any cartridge shell that supports any HVC-N/Cx/Gx/UxROM 01-05 PCB or similar/bigger. These measurements are measured with vernier calipers with 0.05 mm accuracy. Note that this outline also details where the soldermask ends for the card edge.

Technical drawing of the outlines of an augmented HVC-CNROM-256K-01 type cartridge PCB.
Dimensions
Designator Dimensions in mm (±0.05 mm) Description
A 90 Board width
A.1 78.4 Card edge width
A.2 68 Notched width
A.2.1 31.5 Inset board width 1
A.2.2 26.5 Inset board width 2
A.3 39.5 Hole 1 to board edge
A.4 1/2 of A Hole 2 to board edge
A.5 3 Hole 1 diameter
A.6 5 Hole 2 diameter
B 46.1 Board height
B.1 23.2 Inset board height 1
B.2 20.9 Inset board height 2
B.3 10.7 Card edge depth
B.4 19.8 Hole 1 center height
B.5 10.3 Hole 2 center height
C 1.2 Board thickness
D.1 3 Card edge base to pad top
D.2 4 Card edge base to soldermask keepout
D.3 6.7 Power pad height
D.4 5.7 Signal pad height
E.1 0.57 Power pad to card edge side
E.2 1.57 Signal pad to card edge side
E.3 2.6 Power pad width
E.4 1.6 Signal pad width
E.5 0.94 Space between pads
E.6 2.54 Pad spacing
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