Sharp R-380A Service Manual page 20

R-380A
Pin No. Signal
36-37 P81-P80 OUT
38 XIN
39 XOUT OUT
40 VSS
41 P27 OUT
42 P26 OUT
43 P25 OUT
44 P24 OUT
45 P23 OUT
46 P22 OUT
47 P21 OUT
48 P20 OUT
49-50 P17-P16 OUT
51-62
SEG39-SEG28
63-66 OUT
SEG27-SEG24
67 SEG23 OUT
68-74 OUT
SEG22-SEG16
75 SEG15 OUT
76-82 OUT
SEG14-SEG8
83 SEG7 OUT
84-90 OUT
SEG6-SEG0
91 VCC
92 VREF
I/O
Terminal not used.
IN Internal clock oscillation frequency input setting.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit
with respect to XIN terminal.
Internal clock oscillation frequency control output.
Output to control oscillation input of XOUT.
IN Power source voltage: -5.1V.
VC voltage of power source circuit input.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P74 - P77 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 P74 - P77 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 P74 - P77 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 P74 - P77 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 P74 - P77 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 P74 - P77 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 P74 - P77 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 P74 - P77 terminal
while one of G1 line keys on key matrix is touched.
Terminal not used.
IN Terminal not used.
Segment data signals.
Connected to LCD.
The relation between signals are as follows:
LSI Signal (Pin No.)
SEG 27 (63) ............................. S0
SEG 26 (64) ............................. S1
SEG 25 (65) ............................. S2
SEG 24 (66) ............................. S3
SEG 22 (68) ............................. S4
SEG 21 (69) ........................... S26
SEG 20 (70) ........................... S25
SEG 19 (71) ........................... S24
SEG 18 (72) ........................... S23
SEG 17 (73) ........................... S22
SEG 16 (74) ........................... S21
SEG 14 (76) ........................... S20
SEG 13 (77) ........................... S19
Terminal not used.
Segment data signal.
Signal similar to SEG27.
Terminal not used.
Segment data signal.
Signal similar to SEG27.
Terminal not used.
Segment data signal.
Signal similar to SEG27.
IN Connected to GND.
IN Connected to GND.
Description
LCD (Pin No.) LSI Signal (Pin No.)
SEG 12 (78) ............................. S5
SEG 11 (79) ............................. S6
SEG 10 (80) ............................. S7
SEG 9 (81) ............................... S8
SEG 8 (82) ............................... S9
SEG 6 (84) ............................. S10
SEG 5 (85) ............................. S11
SEG 4 (86) ............................. S12
SEG 3 (87) ............................. S13
SEG 2 (88) ............................. S14
SEG 1 (89) ............................. S15
SEG 0 (90) ............................. S16
18
LCD (Pin No.)