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R-15AM
LSI
The I/O signal of the LSI are detailed in the foll owing table.
Pin No.
Signal
1-3
SEG21-
SEG23
4
COM1
5
COM2
6
COM3
7
COM4
8
VLC
9
VSS
10
XIN
11
XOUT
12-15
K00-K03
16
TEST
17
RESET
18
HOLD
IN/OUT
19
INT2
20
R81
21
INT1
22
R83
23
R90
24-25
R91-R92
26
VDD
27
R40
28
R41
DESCRIPTION OF LSI
I/O
OUT
Terminal not used.
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
Signal synchronized with commercial power source frequency.
Signal similar to VSS.
IN
Power source voltage: 0V.
VSS voltage of power source circuit input.
IN
Internal clock oscillation frequency setting input.
The internal clock frequency is set by inserting the ceramic filter oscillation
circuit with respect to XOUT terminal.
OUT
Internal clock oscillation frequency control output.
Output to control oscillation input of XIN.
IN
Terminal to change functions according to the Model.
DC voltage in accordance with the Model in operation is applied to set up its
function.
IN
Connected to VC.
IN
Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is supplied.
Temporarily set to "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.
This is the basic timing for time processing of LSI.
IN
Signal coming from encoder.
When the encoder is turned, the contacts of encoder make pulse signals. And
pulse signals are input into R81.
IN
Signal coming from encoder.
Signal similar to R81. Pulse signals are input into INT1.
OUT
Terminal not used.
IN
To input signal which communicates the door open/close information to
LSI.
Door open "L" level signal (0V). Door close "H" level (+5V)
OUT
Terminal not used.
IN
Connected to GND.
OUT
Signal to sound buzzer (2.0 kHz).
A: tact switch touch sound.
B: Completion sound.
OUT
Magnetron high voltage circuit driving signal.
To turn on and off the magnetron high
voltage circuit relay (RY2). "L" level
during cooking, "H" level otherwise.
Description
A
B
16
H : +5V
L : 0V
20.0 msec
0.1 sec.
H : +5V
L: 0V
2 sec.
H : +5V
L: 0V
H.
GND
During
OFF
cooking
ON
L
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