R-64ST - 23
LSI(IXA089DR)
The I/O signal of the LSI(IXA089DR) are detailed in the following table
DESCRIPTION OF LSI
Pin No.
Signal
I/O
Description
ON/OFF time ratio in
Micro cooking
(a. 48second time base)
ON/OFF time ratio in Mi-
cro cooking
(a. 32second time base)
MICRO
ON
OFF
COOK
100%
32sec.
0sec.
70%
24sec.
8sec.
50%
18sec.
14sec.
30%
12sec.
20sec.
10%
6sec.
26sec.
MICRO
ON
OFF
COOK
100%
48sec.
0sec.
70%
36sec.
12sec.
50%
26sec.
22sec.
30%
16sec.
32sec.
10%
8sec.
40sec.
20.0 msec
During cooking
H : +5V
L : 0V
29
R42
OUT
Magnetron high-voltage circuit driving signal.
To turn on and off the cook
relay (RY3). In 100% POWER
operation, the signals hold "L"
level during microwave
cooking and "H" level while not
cooking. In other cooking
modes (70%, 50%, 30%, 10%)
the signal turns to "H" level and
"L" level in repetition according
to the power level.
30
R43
OUT
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.
31
R50
IN
Signal coming from tact switch.
When tact switches SW1 is touched, a signal out of R61 will be input into R50.
When no tact switch is touched, the signal is held at "H" level.
32
R51
IN
Signal coming from tact switch.
When either of tact switches SW2 and SW5 is touched, a corresponding signal
out of R60 and R61 will be input into R51. When no tact switch is touched, the
signal is held at "H" level.
33
R52
IN
Signal coming from tact switch.
When either of tact switches SW3 and SW6 is touched, a corresponding signal
out of R60 and R61 will be input into R52. When no tact switch is touched, the
signal is held at "H" level.
34
R53
IN
Signal coming from tact switch.
When either of tact switches SW4 and SW7 is touched, a corresponding signal
out of R60 and R61 will be input into R53. When no tact switch is touched, the
signal is held at "H" level.
35
R60
OUT
Tact switch strobe signal.
Signal applied to tact switch section. A pulse signal is input to R51, R52 or R53
terminal while the tact switch SW5, SW6 or SW7 is touched.
36
R61
OUT
Tact switch strobe signal.
Signal applied to tact switch section. A pulse signal is input to R50, R51, R52
or R53 terminal while the tact switch SW1, SW2, SW3 or SW4 is touched.
37-38
R62-R63
OUT
Terminal not used.
39-42
R70-R73
OUT
Terminal not used.
43-54
SEG0 -
OUT
Segment data signal.
SEG11
Connected to LCD.
The relation between signals are as follows:
LSI signal (Pin No.)
LCD (Pin No.)
LSI signal (Pin No.) LCD (Pin No.)
SEG 0 (1) .......................... S12(4)
SEG 6 (7) ........................ S6(10)
SEG 1 (2) .......................... S11(5)
SEG 7 (8) ........................ S5(11)
SEG 2 (3) .......................... S10(6)
SEG 8 (9) ........................ S4(12)
SEG 3 (4) ............................ S9(7)
SEG 9 (10) ...................... S3(13)
SEG 4 (5) ............................ S8(8)
SEG 10 (11) .................... S2(14)
SEG 5 (6) ............................ S7(9)
SEG 11 (12) .................... S1(15)
55-57
SEG12-
OUT
Terminal not used.
SEG14
58
VDD
IN
Power source voltage input terminal.
Connected to GND.
59-64
SEG15-
OUT
Terminal not used.
SEG20
R64ST_S.MANUAL
12/8/01, 11:01 am
23
