25
R-520LK
R-520LW
25 P41 IN Signal similar to AN3.
When either G11 line on key matrix is touched, a corresponding signal will be input into
P41.
26 P40 IN Connected to GND through the pull-down resistor.
27 RESET IN Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is applied.
28 P71 IN Signal similar to AN3.
When either G10 line on key matrix is touched, a corresponding signal will be input into
P71.
29 P70 IN Signal similar to ANI3.
When either G9 line on key matrix is touched, a corresponding signal will be input into
P70.
30 XIN IN Internal clock oscillation frequency control input setting.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit with
respect to XOUT terminal.
31 XOUT OUT Internal clock oscillation output.
Output to control oscillation input to XIN.
32 VSS IN Power source voltage : -5.0V.
The power source voltage to the drive LSI is input to VSS terminal.
33 P27 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P70, P71, P41, P45, P47
and AN3 terminal while one of G8 line keys on key matrix is touched.
34 P26 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P70, P71, P41, P45, P47
and AN3 terminal while one of G7 line keys on key matrix is touched.
35 P25 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P70, P71, P41, P45, P47
and AN3 terminal while one of G6 line keys on key matrix is touched.
36 P24 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P70, P71, P41, P45, P47
and AN3 terminal while one of G5 line keys on key matrix is touched.
37 P23 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P70, P71, P41, P45, P47
and AN3 terminal while one of G4 line keys on key matrix is touched.
38 P22 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P70, P71, P41, P45, P47
and AN3 terminal while one of G3 line keys on key matrix is touched.
39 P21 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P70, P71, P41, P45, P47
and AN3 terminal while one of G2 line keys on key matrix is touched.
40 P20 OUT Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P70, P71, P41, P45, P47
and AN3 terminal while one of G1 line keys on key matrix is touched.
41 P17 OUT Back light signal. (Light emitting diodes) driving signal
42-46 P16-P12 OUT Terminal not used.
47-50
SEG25-SEG22
OUT Terminal not used.
51-72
SEG21-SEG0
OUT Segment data signal.
Pin No. Signal I/O Description