18
R-4A56
Pin No.
Signal
I/O
Description
16
R2
3
IN
Signal coming from touch key.
When either one of G9 line keys on key matrix is touched, a corresponding signal out
of R0
0
-R0
3
, R1
0
-R1
3
will be input into R2
3
. When no key is touched, the signal is held
at "L" level.
17
R3
0
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 R3
0
.
18
R3
1
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 R3
1
.
19
R3
2
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 R3
2
.
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.
Содержание R-4A56
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