Cpu ( Μ Pd78054Gc) - Casio 200CR Service Manual

µ
5-2. CPU ( PD78054GC)
Pin No. Signal
1 P15 Head drive signal (HD1)
2 P16 Stamp drive signal (STAMP)
3 P17 Winder motor drive signal (WINDER)
4 AVss Analong ground for A/D converter
5 P130 Motor drive signal (MOTOR)
6 P131 Drawer drive signal (DRW)
7 AVREF1 Standard voltage for D/A converter (VDD)
8 P70 Head drive signal (HD3)
9 P71 Head drive signal (HD4)
10 P72 Head drive signal (HD5)
11 P20 Head drive signal (HD6)
12 P21 Head drive signal (HD7)
13 P22 Head drive signal (HD8)
14 P23 Head drive signal (HD9)
15 P24 Head drive signal (HD10)
16 P25 Head drive signal (HD11)
17 P26 Head drive signal (HD12)
18 P27 Head drive signal (HD13)
19 P40 Address / Data bus (AD0)
20 P41 Address / Data bus (AD1)
21 P42 Address / Data bus (AD2)
22 P43 Address / Data bus (AD3)
23 P44 Address / Data bus (AD4)
24 P45 Address / Data bus (AD5)
25 P46 Address / Data bus (AD6)
26 P47 Address / Data bus (AD7)
27 P50 Address signal (A8)
28 P51 Address signal (A9)
29 P52 Address signal (A10)
30 P53 Address signal (A11) / Data signal from EEPROM (DO)
31 P54 Address signal (A12) / Data signal to EEPROM (DI)
32 P55 Address signal (A13) / Clock signal for EEPROM (SK)
33 VSS Ground
34 P56 Chip enable signal for EEPROM (EEPROM CE)
35 P57 Chip enable signal for RAM (RAM CE)
36 P60 Key input signal (KI0)
37 P61 Key input signal (KI1)
38 P62 Key input signal (KI2)
39 P63 Key input signal (KI3)
40 P64 Read signal for RAM (RD)
41 P65 Write signal for RAM (WR)
42 P66 Key input signal (KI4)
43 P67 Address strobe signal (ASTB)
44 P30 Display segment signal (SEG1a) / Key common singnal (KC11)
45 P31 Display segment signal (SEG1b) / Key common singnal (KC10)
46 P32 Display segment signal (SEG1c) / Key common singnal (KC9)
47 P33 Display segment signal (SEG1d) / Key common singnal (KC8)
48 P34 Display segment signal (SEG1e) / Key common singnal (KC7)
49 P35 Display segment signal (SEG1f) / Key common singnal (KC6)
50 P36 Buzzer signal (BUZZ)
51 P37 Display segment signal (SEG1g)
52 P120 Display segment signal (SEG0a) / Key common singnal (KC5)
53 P121 Display segment signal (SEG0b) / Key common singnal (KC4)
54 P122 Display segment signal (SEG0c) / Key common singnal (KC3)
Description
— 12 —
P W - O N
In / Out
l e v e l
Out Low
Out Low
Out Low
— GND
Out Low
Out Low
— 5V
Out Low
Out Low
Out Low
Out Low
Out Low
Out Low
Out Low
Out Low
Out Low
Out Low
Out Low
In / Out High
In / Out High
In / Out High
In / Out High
In / Out High
In / Out High
In / Out High
In / Out High
Out Low
Out Low
Out Low
In / Out Low
Out Low
Out Low
— GND
Out Low
Out High
In High
In High
In High
In High
Out High
Out High
In High
Out Low
Out Pulse
Out Pulse
Out Pulse
Out Pulse
Out Pulse
Out Pulse
Out Low
Out Low
Out Pulse
Out Pulse
Out Pulse