Sunsoft FME-7 (and Sunsoft 5B): 44-pin PQFP
/ \
/ O \
(nrw) CPU D3 -> /01 44\ <- CPU D2 (nrw)
varies /02 43\ <- CPU D4 (nrw)
varies <- /03 42\ <- CPU D1 (nrw)
(n) M2 -> /04 41\ <- CPU D5 (nrw)
(n) CPU A13 -> /05 40\ <- CPU D0 (nrw)
GND -- /06 39\ -- +5V
(n) CPU A14 -> /07 38\ <- CPU D6 (nrw)
(n) /ROMSEL -> /08 37\ <- CPU D7 (nrw)
(nrw) CPU R/W -> /09 36\ -> PRG A13 (r)
(n) /IRQ <- /10 35\ -> PRG A16 (r)
(n) PPU /RD -> /11 34\ -> PRG A14 (r)
(n) PPU A10 -> \12 33/ -> PRG A15 (r)
(n) PPU A11 -> \13 32/ -> PRG A17 (r)
(n) PPU A12 -> \14 31/ -> PRG /CE (r)
(n) PPU A13 -> \15 30/ -> PRG RAM /CE (w)
(r) CHR /CE <- \16 29/ -> PRG RAM +CE (w)
+5V -- \17 28/ -- GND
?? \18 27/ varies
(nr) CHR/CIRAM A10 <- \19 26/ -> CHR A17 (r)
(r) CHR A16 <- \20 25/ -> CHR A15 (r)
(r) CHR A11 <- \21 24/ -> CHR A14 (r)
(r) CHR A13 <- \22 23/ -> CHR A12 (r)
\ /
\ /
pin 2: Amplifier in (5B) or ?PRG A18 out (FME-7)?
pin 3: Amplifier out (5B)
pin 18: Audio /disable (5B) [1] - has internal pullup
pin 27: Audio out (5B) or +5V (FME-7)
n: connects to NES (CPU or PPU)
r: connects to ROM (PRG or CHR)
w: connects to WRAM
Expansion audio mixing circuit:[2]
+ +
From S5B----/\/\/---+---||---+---/\/\/---+---||---To RF
(S5B.27) 1K | 1u | 100K | 1u (Cart.46)
| | |
From 2A03---/\/\/---+ | |
(Cart.45) 10K | |
| |
Amp. In----------------------+ |
(S5B.2) |
|
Amp. Out---------------------------------+
(S5B.3)
On FME-7, the two ground supplies and three +5V supplies are shorted internally. Boards (like GRM-E301) that were used with the 5A or 5B did not connect pin 27 to +5V.
On FME-7, pin 3 has an overvoltage protection diode only; pin 18 has both over- and under- voltage protection diodes. Functionality is still not known.
Categories: Pinouts