Fonas 3-in-1

Chip labeled 
TMS1100NLL
MP1185
MBSL 7936
SINGAPORE

7 buttons
2 switches
40 LEDs
4 7-segment LEDs
piezo

TMS1100 pinout
1  R8   - digit 2
2  R9   - digit 1
3  R10  - piezo
4  VDD  - battery -
5  K1   - P, Left and Down buttons
6  K2   - K, Up and Right buttons, Football switch
7  K4   - D button and Basketball switch
8  K8   - Soccer switch
9  INIT - VDD
10 O7   - LED column 8
11 O6   - segment G and column 7
12 O5   - segment F and column 6
13 O4   - segment E and column 5
14 O3   - segment D and column 4
15 O2   - segment C and column 3
16 O1   - segment B and column 2
17 O0   - segment A and column 1
18 OSC1 - 47pF disc cap to VSS; Pro mode: 39K resistor to VSS, Reg mode: 39K+56K
19 OSC2 - OSC1
20 VSS  - battery +
21 R0   - LED Row 5 and buttons
22 R1   - LED Row 4 and buttons
23 R2   - LED Row 3 and buttons
24 R3   - LED Row 2
25 R4   - LED Row 1 and switch
26 R5   - N/C
27 R6   - digit 4
28 R7   - digit 3


Input Matrix
           K1          K2          K4         K8  
R0         P           K           D          --
R1        Down         Up          --         --
R2        Left       Right         --         --
R4         --       Football    Basketball  Soccer


LED Layout
         4  3        2  1
         #  #        #  #
R0    o  o  o  o  o  o  o  o    
R1    o  o  o  o  o  o  o  o    
R2    o  o  o  o  o  o  o  o    
R3    o  o  o  o  o  o  o  o    
R4    o  o  o  o  o  o  o  o    
      O0 O1 O2 O3 O4 O5 O6 O7