Casio CSF-7950 Spécifications télécharger pdf (Page 11)

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PIN FUNCTION

CPU (HD62119A03)

Pin No. Pin Name Input / Output Function

1~12 KO1~KO12 O Key common signal

13~20 KI1~KI8 I Key input signal

21 BUFON O Chip selecting signal for RAM

22 IT2 I Interrupt input

23 IT0 Interrupt input

24~42 AO0~AO18 O Address bus

43 OEBO O Enable signal

44 WEBO O Enable signal to write

49~51 CS4BO~CS6BO O Chip selecting signal

52~59 IO0~IO7 I Data bus

62,63 OPT0,OPT1 O Output point for check

64~71 PORT0~PORT7 I/O Input/output port

72 VSS GND

73,74 PI,PO Power for ceramic oscillator

75 VLC Power

76,77 XO,XI Power

78 VCC Power for LSI

79 VREG2 Power

80,81 TS1,TS2 I Terminal for test

82 VSSR GND

83 BZZ1 O Buzzer signal output

84 BZZ2 O Buzzer signal output

85 VSS GND

86 OCLK O Clock

87 ITOFF I/O Terminal for power switch

89 SW I Reset switch

90 VDB Power

91~94 VD1~VD4 Power for doubler

95 VREG1 Regulator power for LSI

96 VREG4 Regulator power for ROM

97 VREG5 Regulator power

98,99 VDT1I,VDT2I I Terminal for detector

100 VREG3 Regulator power for RAM

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 23 24

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