R-950A
22
Pin No. Signal I/O Description
28/29 XCIN/XCOUT OUT Terminal not used.
30 XIN IN Internal clock oscillation frequency setting input.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit
with respect to XOUT terminal.
31 XOUT OUT Internal clock oscillation frequency control output.
Output to control oscillation input of XIN.
32 VSS IN Power source voltage: -5V.
VC voltage of power source circuit input.
33 P27 IN Signal coming from touch key.
When any one of G-1 line keys on key matrix is touched, a corresponding signal
from P17 - P17 will be input into P27. When no key is touched, the signal is held
at "L" level.
34 P26 IN Signal similar to P27.
When any one of G-2 line key on key matrix is touched, a corresponding signal will
be input into P26.
35 P25 IN Signal similar to P27.
When any one of G-3 line key on key matrix is touched, a corresponding signal will
be input into P25.
36 P24 IN Signal similar to P27.
When any one of G-4 line key on key matrix is touched, a corresponding signal will
be input into P24.
37-40 P23-P20 OUT Segment data signal. Signal similar to P46.
41 P17 OUT Segment data signal. Signal similar to P46.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P24-P27 terminal
while one of G-12 line keys on key matrix is touched.
42 P16 OUT Segment data signal. Signal similar to P46.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P24-P27 terminal
while one of G-11 line keys on key matrix is touched.
43 P15 OUT Segment data signal. Signal similar to P46.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P24-P27 terminal
while one of G-10 line keys on key matrix is touched.
44 P14 OUT Segment data signal. Signal similar to P46.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P24-P27 terminal
while one of G-9 line keys on key matrix is touched.
45 P13 OUT Segment data signal. Signal similar to P46.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P24-P27 terminal
while one of G-8 line keys on key matrix is touched.
46 P12 OUT Segment data signal. Signal similar to P46.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P24-P27 terminal
while one of G-7 line keys on key matrix is touched.
47 P11 OUT Segment data signal. Signal similar to P46.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P24-P27 terminal
while one of G-6 line keys on key matrix is touched.
48 P10 OUT Segment data signal. Signal similar to P46.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P24-P27 terminal
while one of G-5 line keys on key matrix is touched.
49-53 P07-P03 OUT Segment data signal. Signal similar to P46.
54-56 P02-P00 OUT Digit selection signal. Signal similar to P55.
57-59 P37-P35 OUT Digit selection signal. Signal similar to P55.
60-64 P34-P30 OUT Terminal not used.
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