23
R- 520JK
R-520JW
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
