User`s manual

CBM-202PC User’s Manual
10
CITIZEN
PIN NO. SIGNAL NAME I/O FUNCTION LOGIC
51 A14 O A14 HIGH
52 A15 O NC
−
53 A16 O NC
−
54 A17 O NC
−
55 A18 O NC
−
56 A19 O NC
−
57 VSS
−
GND
−
58 P60 O NC
−
59 P61 O NC
−
60 P62 O NC
−
61
φ
O Clock output HIGH
62 STBY I
(Pull up in VCC with 10KΩ.)
LOW
63 RES I Reset input LOW
64 NMI I
(Pull up in VCC with 10K Ω.)
LOW
65 VSS
−
GND
−
66 EXTAL
−
EXTAL (16 MHz)
−
67 XTAL
−
XTAL (16 MHz)
−
68 VCC
−
VCC
−
69 P63 O NC
−
70 RD O RD LOW
71 HRW O HRW LOW
72 P66 O NC
−
73 MD0 I
( Pull up in VCC with 10KΩ.)
HIGH
74 MD1 I
(Pull down in GND with 10KΩ.)
LOW
75 MD2 I
(Pull up in VCC with 10K Ω.)
HIGH