BU3266 / BU3270 pinout: Difference between revisions
From NESdev Wiki
Jump to navigationJump to search
Krzysiobal (talk | contribs) (Created page with "Custom Nintendo PIO chip found in the New Famicom (HVC-101). This replace the U3 (139), and the U7/U8 (368). .---v---. GND -- |01 32| -- +5V NC ?? |02...") |
Krzysiobal (talk | contribs) (Fixed direction of INP0 & INP1) |
||
| Line 1: | Line 1: | ||
Custom Nintendo PIO chip found in the New Famicom (HVC-101). This | Custom Nintendo PIO chip found in the New Famicom (HVC-101). This replaces the U3 (139) and the U7/U8 (368). | ||
.---v---. | .---v---. | ||
| Line 8: | Line 8: | ||
A14 -> |05 28| -> PPU /CE | A14 -> |05 28| -> PPU /CE | ||
A13 -> |06 27| -> CPU RAM /CE | A13 -> |06 27| -> CPU RAM /CE | ||
P1 | P1 D0 -> |07 26| <- INV 2I | ||
P0 | P0 D0 -> |08 25| -> INV 2O | ||
P1 | P1 D1 -> |09 24| -> CPU D0 | ||
P0 | P0 D1 -> |10 23| -> CPU D1 | ||
P1 | P1 D2 -> |11 22| <- /INP0 ($4016 /RD) | ||
+ | +5V -- |12 21| <- /INP1 ($4017 /RD) | ||
P1 | P1 D3 -> |13 20| -> CPU D2 | ||
P1 | P1 D4 -> |14 19| -> CPU D3 | ||
GND -- |15 18| -> D4 | GND -- |15 18| -> CPU D4 | ||
INV | INV 1I -> |16 17| -> INV 1O | ||
'-------' | '-------' | ||
Notes: | Notes: | ||
* INV | * INV 1I/O (16-17) = Audio Inverter | ||
* INC | * INC 2I/O (25-26) = PA13 Inverter | ||
Source: | Source: | ||
Revision as of 07:57, 24 August 2020
Custom Nintendo PIO chip found in the New Famicom (HVC-101). This replaces the U3 (139) and the U7/U8 (368).
.---v---.
GND -- |01 32| -- +5V
NC ?? |02 31| ?? NC
M2 -> |03 30| ?? NC
A15 -> |04 29| -> /ROMSEL
A14 -> |05 28| -> PPU /CE
A13 -> |06 27| -> CPU RAM /CE
P1 D0 -> |07 26| <- INV 2I
P0 D0 -> |08 25| -> INV 2O
P1 D1 -> |09 24| -> CPU D0
P0 D1 -> |10 23| -> CPU D1
P1 D2 -> |11 22| <- /INP0 ($4016 /RD)
+5V -- |12 21| <- /INP1 ($4017 /RD)
P1 D3 -> |13 20| -> CPU D2
P1 D4 -> |14 19| -> CPU D3
GND -- |15 18| -> CPU D4
INV 1I -> |16 17| -> INV 1O
'-------'
Notes:
- INV 1I/O (16-17) = Audio Inverter
- INC 2I/O (25-26) = PA13 Inverter
