R-21JCA-F
17
9
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.
10 CNVSS IN Power source voltage.
The power source voltage to drive the LSI is input to CNVSS terminal.
11 XOUT OUT Internal clock oscillation frequency control output.
Output to control oscillation input of XIN.
12 XIN IN Internal clock oscillation frequency input setting.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit with
respect to XOUT terminal.
13 VSS IN Power source voltage: 0V.
The power source voltage to drive the LSI is input to VSS terminal. Connected to VC.
14 VDD IN Power source voltage: +5V.
The power source voltage to drive the LSI is input to VDD terminal.
15 N.F IN Connected to VSS terminal.
16 INT0 IN Signal coming from encoder.
Signal similar to P22. Pulse signals are input into INT0.
17 INT1 IN Signal to synchronize LSI with commercial power source frequency.
This is basic timing for all real time processing
of LSI.
18 AIN0 IN Input signal which communicates the door open/close information to LSI.
Door closed; "L" level signal.
Door opened; "H" level signal.
19-21
AIN1-AIN3
IN Terminal to change functions according to the model.
Signal in accordance with the model in operation is applied to set up its function.
22 P00 OUT Terminal not used.
23 P01 OUT Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay (RY2). In 100% power operation, the signals hold
"H" level during microwave cooking and "L" level while not cooking.
24 P02 OUT Oven lamp, turntable motor and fan motor driving signal(Square Waveform :
60Hz).
To turn on and off shut-off relay (RY1). The square
waveform voltage is delivered to the relay (RY1)
driving circuit and relay(RY2) control circuit.
25 P03 OUT Signal to sound buzzer.
Completion sound.
26 P10 OUT Terminal not used.
27-29 P11-P13 OUT Segment data signal.
Signal is input to the cathodes of the light-emitting diodes (LD5, LD10, LD15 and LD20).
30 D0 OUT Segment data signal.
Signal is input to the cathodes of the light-emitting diodes (LD4, LD9, LD14 and LD19).
31 D1 OUT Segment data signal.
Signal is input to the cathodes of the light-emitting diodes (LD3, LD8, LD13 and LD18).
32 D2 OUT Segment data signal.
Signal is input to the cathodes of the light-emitting diodes (LD2, LD7, LD12 and LD17).
Pin No. Signal I/O Description
16.7 msec
H : +5V
L: 0V
16.7 msec
During cooking
H
L
H: +5V
L: 0V
2.0 sec
