Casio RE-700, Руководство по обслуживанию и список запасных частей

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— 10 —
LSI PIN FUNCTION
1. CPU (HC3009-02-F1)
Pin No. Signal I n / O u t Function
1 DUMMY — Not used
2 ~ 9 IO0 ~ 7 In/Out Data bus
10 CS6B0 Out Chip enable signal for ROM
11 CS7B0 Out Chip enable signal for RAM
12 DUMMY — Not used
13 WEB0 Out Write enable signal for RAM
14 OEB0 Out Output enable signal for RAM and ROM
15 ~ 32 AO0 ~ 17 Out Address bus
33 IT0 In Reception data input
34 IT2 In Interrupt signal input
35, 37 DUMMY, TRANS — Not used
36 BUFON Out Power supply control for ROM
38 ~ 44 KI1 ~ 7 In Key input signal
45 K18 In Not used
46 ~ 54 KO1, KO5 ~ 12 Out Key scan signal
55 DUMMY — Not used
56 VREG3 Out Power supply for RAM/3 (V)
57 VLCD Out 5.9 [V]
58 ~ 61 VT1 ~ 4 — VT1: 1.0 [V]; VT2: 2.9 [V]
VT3: 2.0 [V]; VT4: 3.9 [V]
62, 63 VREG1, 4 — VREG1: 2.6[V]; VREG4: 5.0[V]
64 VDB In Low battery detection
VDB<4.4 [V] Lower battery message
65, 66 VD3, 4 — VD3: 4.7[V]; VD4: 1.6[V]
67, 68 VD1, 2 — VD1: 4.7[V]; VD2: 1.6[V]
69 SW1 In 2.6 [V]
While pushing the reset button: 0 [V]
70, 71 BZ1, 2 Out Buzzer terminal
72, 73 TS1, 2 — Test for manufacturer
74 VREG2 Out 2 [V]
75 VCC In Power supply / 3 [V]
76 DUMMY — Not used
77, 78 VSS In GND/0 [V]
79 ~ 83 V0 ~ 4 Out The voltage for LCD drive
OFF: 0 [V]
V0: 3.6(Min) ~ 5.8(Max) [V]
V1: 2.9(Min) ~ 4.6(Max) [V]
V2: 2.1(Min) ~ 3.5(Max) [V]
V3: 1.4(Min) ~ 2.4(Max) [V]
V4: 0.7(Min) ~ 1.2(Max) [V]
84 VSSR In GND / 0 [V]
85 ~ 108 C1 ~ 24 Out Common signal display
109, 110 S1, S2 — Not used
111 ~ 205 S3 ~ 96 Out Segment signal for display
206 DUMMY — Not used
207, 208 XI, XO In/Out Clock terminal (DT-26S)
209 DUMMY — Not used
210, 211 PO, PI In/Out Main clock terminal (3.45 MG)
212 DUMMY — Not used
213, 214 PORT2,3 — Interrupt port
215 ~ 217 PORT4 ~ 6 In/Out For data communication
218 PORT7 — Interrupt port
219 OPT2 — Not used
ON