Casio SF-8350 Especificaciones descargar pdf (Pagina 24)

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10-8. Operation program ROM pin descriptions (µPD23C2001EGW342)

Pin No. Name In/Out Status Status Description

of OFF of ON

2, 4~6, 9~13, A0~A14 In L Pulse Address bus line (A0~A14)

15~18

21~23, 25~29 D1~D8 In/Out L Pulse Data bus line (IO0~IO7)

24 GND In L L GND terminal

31 CSB In H Pulse Chip select signal

1 OEB In H Pulse Read signal from CPU

7 WEB In H Pulse Write signal from CPU

8 VCC In H H VDD terminal

1,30,31 NC - L +5V Connected to VCC

2~12, 23, A0~A16 In L Pulse Address bus line (A0~A14,RA15,RA16)

Pin No. Name In/Out Status Status Description

of OFF of ON

25~29

13~15, 17~21 IO0~IO7 Out L Pulse Data bus line (IO0~IO7)

16 GND Power GND GND GND terminal

22 CE In L Pulse Chip selection terminal

24 OE In L Pulse Output enable terminal

32 VCC Power L +5V VCC terminal

10-9. RAM pin descriptions (µPD43256AGU-10/12/15LL)

1 2 ... 19 20 21 22 23 24 25 26 27 28 29 ... 36 37

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Casio SF-8350 Especificaciones Pagina 24