Table of Contents
Advertisement
LSI(IZA828DR) AND LSI(IZA758DR)
The I/O signals of the LSI(IZA828DR and IZA758DR) are detailed in the following table.
Pin No.
Signal
1-12
OUT
SEG0-SEG11
13
R60
14
R61
15
R62
16
R63
17
AIN0
18-20
AIN1-AIN3
21
VSS
22
R70
OUT
23
PULSE
OUT
24
R72
OUT
25
R73
OUT
26
INT2
DESCRIPTION OF LSI
I/O
Segment data signal.
Connected to LCD.
The relation between signals are as follows:
LSI signal (Pin No.)
SEG 0 (1) ................................... S12
SEG 1 (2) ................................... S11
SEG 2 (3) ................................... S10
SEG 3 (4) ..................................... S9
SEG 4 (5) ..................................... S8
SEG 5 (6) ..................................... S7
IN
Signal coming from touch key.
When either G12 line on key matrix is touched, a corresponding signal out of R73, R81-R83
and R90-R91 will be input into R60. When no key is touched, the signal is held at "H" level.
IN
Signal similar to R60.
When either G11 line on key matrix is touched, a corresponding signal will be input into R61.
IN
Signal similar to R60.
When either G10 line on key matrix is touched, a corresponding signal will be input into R62.
IN
Signal similar to R60.
When either G9 line on key matrix is touched, a corresponding signal will be input into R63.
IN
To input signal which communicates the door open/close information to LSI.
Door close "H" level signal (0V). Door open "L" level (-5V)
IN
Terminal to change functions according to the Model.
By using the A/D converter contained in the LSI, DC voltage in accordance with the Model
in operation is applied to set up its function.
IN
Power source voltage: -5V.
VSS voltage of power source circuit input.
Magnetron high-voltage circuit driving signal.
To turn on and off the cook relay (RY2). The
signals holds "L" level during microwave cook-
ing and "H" level while not cooking. In other
cooking modes (variable cooking) the signal
turns to "H" level and "L" level in repetition
according to the power level.
Signal to sound buzzer (2.0 kHz).
A: key touch sound.
B: Completion sound.
Oven lamp, fan motor and turntable motor driving signal.
To turn on and off shut off relay (RY1). The
square waveform voltage is delivered to the
RY1 driving circuit and RY2 control circuit.
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to R60 - R63 terminal while one
of G8 line keys on key matrix is touched.
IN
Signal synchronized with commercial power source frequency.
This is the basic timing for time processing of LSI.
Description
LCD (Pin No.)
LSI signal (Pin No.)
SEG 6 (7) ....................................S6
SEG 7 (8) ....................................S5
SEG 8 (9) ....................................S4
SEG 9 (10) .................................. S3
SEG 10 (11) ................................ S2
SEG 11 (12) ................................ S1
P-HI
P-70
(ON and OFF times for other power level.)
19
LCD (Pin No.)
OFF
H : GND
ON
L : -5V
OFF
OFF
H : GND
24 sec.
8 sec.
ON
L : -5V
0.1 sec.
H : GND
A
L : -5V
2 sec.
H : GND
B
L : -5V
16.7 msec.
During cooking
16.7 msec.
R-305BW
R-309BW
H : GND
L : -5V
H : GND
L : -5V
Advertisement
Table of Contents
