15
R-3S68
1
XOUT
OUT
Internal clock oscillation frequency control output.
Output to control oscillation input of X
OUT
.
2
XIN
IN
Internal clock oscillation frequency input setting.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit with
respect to X
IN
terminal.
3
RESET
IN
Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is supplied. Temporarily
set to “L” level the moment power is supplied, at this time the LSI is set. Thereafter set
at “H” level.
4
R70
OUT
Segment data signal.
Refer to the touch control panel circuit for the relationship between signals and
indicators. Normally, one pulse is output in every synchronized signal period, and
input to the anode of the light -emitting diode.
5
PULSE
OUT
Signal to sound buzzer.
A: key touch sound(0.12 sec.).
B: Completion sound(2.4 sec.).
6
R72
OUT
Digit selection signal.
Refer to the touch control panel circuit about the relation between signals and digits.
Normally, one pulse is output in every synchronized signal period, and input to the light
-emitting diode.
7-9
R40-R42
OUT
Digit selection signal.
Refer to the touch control panel circuit about the relation between signals and digits.
Normally, one pulse is output in every synchronized signal period, and input to the light
-emitting diode.
10
AIN3
IN
Terminal to change cooking constant.
11
R50
OUT
Segment data signal.
Signal similar to R70.
12-13
R51-R52
OUT
Segment data signal.
Refer to the touch control panel circuit for the relationship between signals and
indicators. Normally, one pulse is output in every synchronized signal period, and
input to the anode of the light -emitting diode.
14
VSS
IN
Connected to VC.
15
R53
OUT
Segment data signal.
Signal similar to R70.
16
R60
OUT
Segment data signal.
Signal similar to R70.
17
R61
OUT
Segment data signal.
Signal similar to R70.
Switch strobe signal.
Signal applied to tact switch section. A pulse signal is input to R81, R82 and R83
terminal while one of diode D56 line switches on switch matrix is touched.
18
R62
OUT
Segment data signal.
Signal similar to R70.
Switch strobe signal.
Signal applied to tact switch section. A pulse signal is input to R81, R82 and R83
terminal while one of diode D57 line switches on switch matrix is touched.
DESCRIPTION OF LSI
LSI(IZA677DR)
The I/O signal of the LSI(IZA677DR) is detailed in the following table.
Pin No.
Signal
I/O
Description
Summary of Contents for R-3S68
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Page 36: ...34 R 3S68 96SHARP CORP 3U0 07E Printed in Japan ...
