18
R-4A56
Pin No. Signal I/O Description
16 R23 IN Signal coming from touch key.
When either one of G9 line keys on key matrix is touched, a corresponding signal out
of R00-R03, R10-R13 will be input into R23. When no key is touched, the signal is held
at "L" level.
17 R30 IN Signal coming from touch key.
When either one of G10 line keys on key matrix is touched, a corresponding signal will
be input into R30.
18 R31 IN Signal coming from touch key.
When either one of G11 line keys on key matrix is touched, a corresponding signal will
be input into R31.
19 R32 IN Signal coming from touch key.
When either one of G12 line keys on key matrix is touched, a corresponding signal will
be input into R32.
20 INT1 IN Signal synchronized with commercial source frequency(50Hz).
This is basic timing for time processing of LSI.
21 GND IN Power source voltage : -5V.
VC voltage of power source circuit input.
22 AVCC IN Connected to GND.
23-24 AN0-AN1 IN Connected to VC.
25 AN2 IN Terminal to used.
26 AN3 IN Input signal which communicates the door open/close information to LSI..
Door closed; "H" level signal.
Door opened; "L" level signal.
27 AVSS IN Connected to VC.
28 RESET IN Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is supplied. Temporarily
set to “H” level the moment power is supplied, at this time the LSI is set. Thereafter
set at “L” level.
29 TEST IN Connected to GND.
30 OSC1 IN Internal clock oscillation frequency input setting.
The internal clock frequency is set by inserting the ceramic filter oscillation circuit with
respect to OSC1 terminal.
31 OSC2 OUT Internal clock oscillation frequency control output.
Output to control oscillation input of OSC2.
32 VCC IN Power source voltage input terminal.
Connected to GND.
33 D0 OUT Terminal to used.
34 D1 OUT Magnetron High-voltage circuit driving signal.
To turn on and off the cook relay). In HIGH operation, the signals holds “H” level during
microwave cooking and “L” level while not cooking. In other cooking modes (MED
HIGH,MED,MED LOW,LOW) the signal turns to “H” level and “L” level in repetition
according to the power level.
35 D2 OUT Terminal not used.
36 D3 OUT Oven lamp, turntable motor and cooling fan motor driving signal. (Square
Waveform : 45Hz)
To turn on and off the control relay. The pulse signal (45Hz) is delivered to the control
relay driving circuit and cook relay control circuit.
37 D4 OUT Segment data signal.
Signal similar to D11.
38-42 D5-D9 OUT Digit selection signal.
Signal similar to D10.
To Next Page
Loading...
Need help?
General
