Casio WK-1200 Manuel d'utilisateur télécharger pdf (Page 10)

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Pin No. Terminal In/Out Function

49 EOEB Out Read enable signal output for the effect RAM

50 VSS3 In Ground (0 V) source

60 BWEB Out Write enable signal output for the effect RAM

62, 66, 70, 74, 78 VSS2 In Ground source

63, 67, 71, 75, 79 VDD2 In +5 V source

64, 65, 68, 69,

PA0 ~ PA5 Out Button scan signal output

72, 73

76, 77 PA6/7 Out Not used

LCD DRIVER (LSI501 : SED1278F0A)

The LCD driver can drive a dot matrix LCD having 40 segment and 16 common lines. The LSI contains 240

graphic symbols in the built-in character generator ROM, and stores 80 characters in the built-in display data

RAM. In accordance with command from the CPU, the LSI is capable of displaying up to 16 characters

simultaneously. The following table shows the pin functions of LSI 501.

Pin No. Terminal In/Out Function

1 ~ 22,

SEG1 ~ SEG40 Out Segment signal output

63 ~ 80

23 VSS — GND (0 V) source

24, 25 OSC1, OSC2 In/Out

Terminals for the built-in clock pulse generator. The external

resistor connected determines the oscillation frequency.

26 ~ 30 V1 ~ V5 In

LCD drive voltage input.

Those voltages are used forgenerating the stepped pulse of

the LCD drive signals.

31, 32 LP, XSCL — Not used

33 VDD In LVDD (+5 V) source

34, 35 FR, DO — Not used

36 RS In

Data/command determination terminal.High: data, Low:

command

37 R/W In Read/write terminal. High: read, Low: write

38 E In

Chip enable signal.

High: enable, the writing is done at fall edge.

Low: disenable

39 ~ 42 DB0 ~ DB3 — Not used. Connected to GND (0 V)

43 ~ 46 DB4 ~ DB7 In/Out Data bus

47 ~ 62 COM1 ~ COM16 Out Common signal/output

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 24 25

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Casio WK-1200 Manuel d'utilisateur Page 10