Casio SF-A10 Manual de usuario descargar pdf (Pagina 5)

3. LSI PIN FUNCTION

1. CPU (HC3000-03-F1)

Pin No. Signal In/Out Function

1 VREG3 Out Power supply for RAM / 3(V)

2 DMY – Not used

3 ~ 5 KO10 ~ 12 Out Not used

6 ~ 14 KO1 ~ 9 Out Key scan signal

15 KI8 In Not used

16 ~ 22 KI1~7 In Key input signal

23 , 25 TRANS, DUMMY – Not used

24 DUFON Out Power supply control for ROM

26 IT2 In Battery switch position sensor

27 IT0 In Reception data input

28 AO17 Out Not used

29 ~ 45 A0 ~ A16 Out Address bus

46 OEB0 Out Output enable signal for RAM and ROM

47 WEB0 Out Write enable signal for RAM

48 ~ 52 – Not used

53 CS7B0 Out Chip enable signal for RAM

54 CS6 Out Chip enable signal for ROM

55, 56 Out Not used

57 ~ 64 IO0 ~ IO7 In/Out Data bus

65 ~ 73 – Not used

74 PORT7 – Battery switch on: "L" / 0[V]

off: "H" / 5[V]

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