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DESCRIPTION OF LSI
Pin No.
Signal
24
R72
25
R73
26
INT2
27
R81
28
INT1
29
R83
30-32
R90-R92
33
XIN
34
XOUT
35
RESET
36
HOLD
IN/OUT
37
VLC
38
COM1
39
COM2
40
COM3
41
COM4
42
VDD
I/O
OUT
Oven lamp, fan motor and turntable motor driving signal.
To turn on and off shut off relay (RY1).
The square waveform voltage is deliv-
ered to the RY1 driving circuit.
IN
Signal coming from tact switch.
When either of tact switches SW5-SW7 is touched, a corresponding signal out
of R60,R61 and R62 will be input into R73. When no key is touched, the signal
is held at "H" level
IN
Signal synchronized with commercial power source frequency.
This is the basic timing for time processing of LSI.
IN
Signal coming from tact switch.
When either of tact switches SW1-SW4 is touched, a corresponding signal out
of R60, R61, R62 and R63 will be input into R81. When no key is touched, the
signal is held at "H" level.
OUT
Terminal not used.
OUT
Terminal not used.
OUT
Terminal not used.
IN
Internal clock oscillation frequency setting input.
The internal clock frequency is set by inserting the capacitor and resistor circuit
with respect to XOUT terminal.
OUT
Internal clock oscillation frequency control output.
Output to control oscillation input of XIN.
IN
Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is supplied.
Temporarily set "L" level the moment power is supplied, at this time the LSI is
reset. Thereafter set at "H" level.
Connected to VDD.
IN
Signal synchronized with commercial power source frequency.
Signal similar to VSS.
OUT
Common data signal: COM1.
Connected to LCD (Pin No. 1)
OUT
Common data signal: COM2.
Connected to LCD (Pin No. 2)
OUT
Common data signal: COM1.
Connected to LCD (Pin No. 3)
OUT
Terminal not used.
IN
Power source voltage input terminal.
Connected to VC.
Description
R343M - 10
H : +5V
L : 0V
20.0 msec
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