6-2. CPU (uPD75516GF-351-3B9)
PW-ON
Pin No.SignalDescriptionsIn/Out
level
1 AN0Mode switch signal (RF,OFF,REG,X,Z) signalIn2.0V
2 AVREFVCC terminal (+5V)-5.0V
3 VDDVDD terminal (+5V)-5.0V
4 VDDVDD terminal (+5V)-5.0V
5 P113Motor drive signal (M4)OutLow
6 P112Motor drive signal (M3)OutHigh
7 P111Motor drive signal (M2)OutLow
8 P110Motor drive signal (M1)OutLow
9 P103Stamp / Clock signalOutLow
10 P102RAM address signal (A12) / Receipt and Journal feed (FEED)OutLow
11 P101RAM address signal (A09/A11) / Head drive signal (HD6)OutLow
12 P100RAM address signal (A08/A10) / Head drive signal (HD5)OutLow
13 P93RAM address signal (A03/A07) / Head drive signal (HD4)OutLow
14 P92RAM address signal (A02/A06) / Head drive signal (HD3)OutLow
15 P91RAM address signal (A01/A05) / Head drive signal (HD2)OutLow
16 P90RAM address signal (A00/A04) / Head drive signal (HD1)OutLow
17 SI1/P83Key input signal (Ki7)InHigh
18 SO1/P82Key input signal (Ki6)InHigh
19 SCK1/P81Key input signal (Ki5)InHigh
20 PP0/P80Key input signal (Ki4)InHigh
21 KR7/P73Not usedOut-
22 KR6/P72Display segment signal (SG1)OutPulse
23 KR5/P71Display segment signal (SF1)OutPulse
24 KR4/P70Display segment signal (SE1)OutPulse
25 KR3/P63Display segment signal (SD1)OutPulse
26 KR2/P62Display segment signal (SC1)OutPulse
27 KR1/P61Display segment signal (SB1)OutPulse
28 KR0/P60Display segment signal (SA1)OutPulse
29 P53Display segment signal (SDP0)OutPulse
30 P52Display segment signal (SG0)OutPulse
31 P51Display segment signal (SF0)OutPulse
32 P50Display segment signal (SE0)OutPulse
33 VSSGND terminal-
34 P43Display segment signal (SD0)OutPulse
35 P42Display segment signal (SC0)OutPulse
36 P41Display segment signal (SB0)OutPulse
37 P40Display segment signal (SA0)OutPulse
38 P33Display segment coomon signal (Dg4)OutPulse
39 P32Display segment coomon signal (Dg3)OutPulse
40 P31Display segment coomon signal (Dg2)OutPulse
41 P30Display segment coomon signal (Dg1)OutPulse
42 P23/BUZBuzzer signalOutLow
43 P22/PCLMotor drive signal (for paper feeding)OutLow
44 P21Step motor common signal (for print wheel)OutHigh
45 P20/PT00Drawer open signal (DW)OutLow
46 P13/TI0Key input signal (Ki9)InHigh
47 P12/INT2Key input signal (Ki8)InHigh
48 P11/INT1Power down signalInLow
49 P10/INT0Reset pulse from printerInHigh
50 P03/SI0/SB1 Key input signal (Ki3)InHigh
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