Sharp R-501CK Service Manual page 22

R - 5 0 1 C K
R- 501CW
Pin No. Signal
33 P27 OUT
34 P26 OUT
35 P25 OUT
36 P24 OUT
37 P23 OUT
38 P22 OUT
39 P21 OUT
40 P20 OUT
41-48 P17-P10 OUT
49-50 P07-P06 OUT
51-72 OUT
SEG21-SEG0
73/74 VCC/VREF
75 AVSS
76 COM3 OUT
77 COM2 OUT
78 COM1 OUT
79 COM0 OUT
80 VL3
I/O
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P41, P43, P44 and P45
terminal while one of G8 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P41, P43, P44 and P45
terminal while one of G7 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to AN0, P41, P43, P44 and
P45 terminal while one of G6 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P41, P43, P44 and P45
terminal while one of G5 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P41, P43, P44 and P45
terminal while one of G4 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P41, P43, P44 and P45
terminal while one of G3 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P41, P43, P44 and P45
terminal while one of G2 line keys on key matrix is touched.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P41, P43, P44 and P45
terminal while one of G1 line keys on key matrix is touched.
Terminal not used.
Terminal not used.
Segment data signal.
Connected to LCD.
The relation between signals are as follows:
LSI signal (Pin No.)
SEG 21 (51) .............................. SEG 3
SEG 20 (52) .............................. SEG 2
SEG 19 (53) .............................. SEG 1
SEG 18 (54) ............................ SEG 22
SEG 17 (55) ............................ SEG 21
SEG 16 (56) ............................ SEG 20
SEG 15 (57) ............................ SEG 19
SEG 14 (58) ............................ SEG 18
SEG 13 (59) ............................ SEG 17
SEG 12 (60) ............................ SEG 16
SEG 11 (61) ............................ SEG 15
IN Connected to GND.
IN Connected to VC.
Terminal not used.
Common data signal: COM1.
Connected to LCD signal C1.
Common data signal: COM2.
Connected to LCD signal C2.
Common data signal: COM3.
Connected to LCD signal C3.
IN Power source voltage input terminal.
Standard voltage for LCD.
Description
LCD (Pin No.) LSI signal (Pin No.)
SEG 10 (62) ........................... SEG 14
SEG 9 (63) ........................... SEG 13
SEG 8 (64) ........................... SEG 12
SEG 7 (65) ........................... SEG 11
SEG 6 (66) ........................... SEG 10
SEG 5 (67) ............................. SEG 9
SEG 4 (68) ............................. SEG 8
SEG 3 (69) ............................. SEG 7
SEG 2 (70) ............................. SEG 6
SEG 1 (71) ............................. SEG 5
SEG 0 (72) ............................. SEG 4
20
LCD (Pin No.)