UM6582 pinout

United Microelectronics UM6582: 16-pin 0.3" PDIP (Used in the Stylandia's IQ-502 joypads)

           .---v---.
  TURBO <- |01   16| -> TURBO/2
     /B -> |02   15| -> TURBO/4
 /START -> |03   14| <- /A
/SELECT -> |04   13| -- VCC
  /DOWN -> |05   12| -- GND
 /RIGHT -> |06   11| <- STROBE
    /UP -> |07   10| <- CLK
  /LEFT -> |08   09| -> D0
           '-------'

Notes:

• TURBO, TURBO/2, TURBO/4 can be used as turbo input for button A/B (on the tested pad, TURBO was used and other pins were NC),
• They toggle on the every / every second / every fourth rising edge of the (CLK and not STROBE) signal respectively and there is around 82ns delay between the transition
• After 8 edges of CLK signal, D0 goes low (on most pads, it goes high)

Waveforms

Source: [1]