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R-310AK
R-330AK
R-330AW
Pin No.
Signal
89
P41
90
P42
OUT
91
INT
92
AVCC
93
AN0
94
AN1
95
AN2
96
AN3
97-100
AN4-AN7
LSI(IZA738DR) : R-310AK
The I/O signal of the LSI(IZA738DR) is detailed in the following table.
Pin No.
Signal
1
SEG 0
OUT
12
SEG11
13
R60
14
R61
15
R62
16
R63
17
AIN0
18-20
AIN1-AIN3
I/O
IN
Terminal not used.
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.
IN
Signal synchronized with commercial power source frequency.
This is basic timing for time processing of LSI.
IN
Connected to GND.
IN
Used for initial balancing of the bridge circuit (absolute humidity sensor). This input is an
analog input terminal from the AH sensor circuit, and connected to the A/D converter built into
the LSI.
IN
AH sensor input.
This input is an analog input terminal from the AH sensor circuit, and connected to the A/D
converter built into the LSI.
IN
Connected to GND.
IN
To input signal which communicates the door open/close information to LSI.
Door closed; "H" level signal (0V).
Door opened; "L" level signal (-5V).
IN
Terminal to change cooking constant 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 cooking constant.
I/O
Segment data signal.
Connected to LCD.
The relation between signals are as follows:
LSI signal (Pin No.)
SEG 0 (1) ....................................... 4
SEG 1 (2) ....................................... 5
SEG 2 (3) ....................................... 6
SEG 3 (4) ....................................... 7
SEG 4 (5) ....................................... 8
SEG 5 (6) ....................................... 9
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 R61.
IN
Signal similar to R60.
When either G9 line on key matrix is touched, a corresponding signal will be input into R61.
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.
Description
P-HI
P-70
Description
LCD (Pin No.)
LSI signal (Pin No.)
SEG 6 (7) .................................... 10
SEG 7 (8) .................................... 11
SEG 8 (9) .................................... 12
SEG 9 (10) .................................. 13
SEG 10 (11) ................................ 14
SEG 11(12) ................................. 15
20
OFF
H : GND
ON
L : -5V
OFF
OFF
H : GND
24 sec.
8 sec.
ON
L : -5V
H : GND
L : -5V
16.7 msec
LCD (Pin No.)
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