Specifications

— 21 —
12. PIN FUNCTION
12-1. CPU (HD62119A02)
Pin No. Pin Name Input / Output Function
1,3~12 KO1~KO10,KO12 O Key common signal
14~20 KI1~KI7 I Key input signal
22 IT2 I Interrupt input
23 IT0 GND
24~42 AO0~AO18 O Address bus
43 OEBO O Enable signal
44 WEBO O Enable signal to write
48~51 CS4BO~CS7BO 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 point
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
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