23
Pin No. Signal I/O Description
23 INT0 IN Signal to synchronized LSI with commercial power source frequency(50Hz).
This is basic timing for time processing
of LSI.
24 CNVSS IN Connected to VC.
25 RESET IN Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is applied. Temporarily
set to "L" level the moment power is applied, at this time the LSI is reset. Thereafter
set at "H" level.
26 P41 IN/OUT Memory (EEPROM) data input/output.
27 P40 OUT Memory (EEPROM) clock out.
28 XIN IN Internal clock oscillation frequency input setting.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit
with respect to XIN terminal.
29 XOUT OUT Internal clock oscillation frequency control output.
Output to control oscillation input of XOUT.
30 VSS IN Power source voltage: -5V.
VC voltage of power source circuit input.
31 P27 OUT Grill (TOP) heating element driving signal.
To turn on and off the grill heating element
relay (RY3). "L" level during grill cooking,
convection cooking or dual cooking, "H"
level otherwise. The heater relay turns on
and off within a 48 second time base in
accordance with the special program in LSI.
32 P26 OUT Convection heating element driving signal.
To turn on and off the relay (RY4). "L" level
during grill cooking, convection cooking or
dual cooking, "H" level otherwise.
The heater relay turns on and off within a 48
second time base in accordance with the
special program in LSI.
33 P25 OUT Oven lamp and turntable motor driving signal(Square Waveform : 50Hz).
To turn on and off shut-off relay (RY1). The
square waveform voltage is delivered to the
relay (RY1) driving circuit.
34 P24 OUT Convection motor driving signal.
To turn on and off shut-off relay(RY7). "L"
level during convection or dual cooking "H"
level otherwise. (Relay RY7 does not turn
on at preheating mode.)
35 P23 OUT Fan motor driving signal.
To turn on and off the fan motor relay RY6.
"L" level during cooking, or for 5 minutes
after grill cooking or for a while after
convection or dual cooking. "H" level
otherwise.
36 P22 OUT Terminal not used.
Power output ON time OFF time
100 % 48 sec. 0 sec.
90 % 44 sec. 4 sec.
80 % 40 sec. 8 sec.
70 % 36 sec. 12 sec.
60 % 32 sec. 16 sec.
50 % 26 sec. 22 sec.
40 % 22 sec. 26 sec.
30 % 16 sec. 32 sec.
20 % 12 sec. 36 sec.
10 % 8 sec. 40 sec.
Power output ON time OFF time
100 % 48 sec. 0 sec.
90 % 44 sec. 4 sec.
80 % 40 sec. 8 sec.
70 % 36 sec. 12 sec.
60 % 32 sec. 16 sec.
50 % 26 sec. 22 sec.
40 % 22 sec. 26 sec.
30 % 16 sec. 32 sec.
20 % 12 sec. 36 sec.
10 % 8 sec. 40 sec.
20 msec.
H : GND
L (-5V)
During cooking
L
H
20 msec.
ON
OFF
During cooking or for awhile after
grill convection or dual.
L
GND
H.
ON
OFF
During
cooking
L
GND
H.
(Convection or dual cooking)
DESCRIPTION OF LSI
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