Sharp R-4H54 - Page 20

R-4H54
PIN NO. i 39
1 SIGNAL / B4
1 I/O / OUT
Segment data signal. Signal similar to 82.
PIN NO.
/ 40
Segment data signal.
Signal similar to 82.
1 SIGNAL i B5
I
I/O
/ OUT
Kev strobe signal.
Signal applied to touch-key section. A pulse signal is input to HO-H3 terminal
while one of G-4 line keys on key matrix is touched.
(RD939A3U)
PIN NO. 41
1 SIGNAL / B6 1 I/O / OUT
Segment data signal.
Signal similar to B2.
Kev strobe siqnal.
Signal applied to touch-key section. A pulse signal is input to HO-H3 terminal
while one of G-5 line keys on key matrix is touched.
(RD939A3U)
PIN NO.
j 42
Segment data siqnal.
Signal similar to B2.
] SIGNAL j B7
I
I/O
j OUT
Kev strobe signal.
Signal applied to touch-key section. A pulse signal is input to HO-H3 terminal
while one of G-6 line keys on key matrix is touched.
(RD939A3U)
PIN NO. j 43
Segment data signal.
Signal similar to B2.
1 SIGNAL j GO
I
I/O
I OUT
Kev strobe sinnal.
Signal applied to touch-key section. A pulse signal is input to HO-H3 terminal
while one of G-7 line keys on key matrix is touched.
(RD939A3U)
PIN NO. : 44
Segment data signal.
Signal similar to 82.
1 SIGNAL / Gl
I
I/O
1 OUT
Kev strobe signal.
Signal applied to touch-key section. A pulse signal is input to HO-H3 terminal
while one of G-8 line keys on key matrix is touched.
(RD939A3U)
PIN NO.
’ 45-49 1 SIGNAL / G2-G6
I
I/O
OUT
Senment data signal. Signal similar to B2.
PIN NO. ’ / 50
Signal to sound buzzer.
A: Key touch sound.
B: Completion sound.
1 SIGNAL ; G7
I
I/O
j OUT
0.12 WC.
PIN NO. j 51/52
1 SIGNAL 1 VCC/TEST-f- I/O~~~~~
IN/IN
Connected to GND.
PIN NO.
I 53
SIGNAL / 0 OUT
I I/O
’ OUT
Internal clock oscillation frequency control output.
Output to control oscillation input of 0 IN.
PIN NO.
I
1 54
1 SIGNAL / 0 IN
I
I/O
/ IN
Internal clock oscillation frequencv setting input.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit with respect to 0 OUT terminal.
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