Tomy Pinball Chip labeled MP1180 TOMY PINB MSL^8005 die labeled MP1180 3 buttons: plunger, left flipper, right flipper 3 7-segment LEDs 37 LEDs - 33 round (1-26, A-G), 4 rectangular (DEFG) piezo TMS1100 pinout 1 R8 - LED matrix 2 R9 - plunger 3 R10 - piezo 4 VDD - battery - 5 K1 - N/C 6 K2 - plunger 7 K4 - right flipper (other side is VSS) 8 K8 - left flipper (other side is VSS) 9 INIT - resistor to VDD 10 O7 - N/C 11 O6 - segment G / LED matrix 12 O5 - segment F / LED matrix 13 O4 - segment E / LED matrix 14 O3 - segment D / LED matrix 15 O2 - segment C / LED matrix 16 O1 - segment B / LED matrix 17 O0 - segment A / LED matrix 18 OSC1 - 47pF disc cap to VSS, 47K resistor to VDD 19 OSC2 - OSC1 20 VSS - battery + 21 R0 - right 7-segment LED 22 R1 - center 7-segment LED 23 R2 - left 7-segment LED 24 R3 - LED matrix 25 R4 - LED matrix 26 R5 - LED matrix 27 R6 - LED matrix 28 R7 - LED matrix Input matrix K1 K2 K4 K8 R9 -- plunger -- -- VSS -- -- right flipper left flipper LED matrix R3 R4 R5 R6 R7 R8 A A 04 10 15 22 D B 02 05 12 17 23 E C 03 06 13 18 24 F D 01 07 14 19 25 G E B 08 16 20 26 F C 09 11 21 rectangular LEDs D and F connected to left flipper button rectangular LEDs E and G connected to right flipper button LED numbering -- -- -- | | | | | | -- -- -- | | | | | | -- -- -- 01 02 03 16 10 04 09 05 15 A 11 08 06 07 26 14 12 B 13 C D E 25 -- -- 17 18 19 24 20 21 22 F G -- -- 23