Wolf MWD24-2, Руководство по обслуживанию

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Theory of Operation Drawer Microwave
(Models MWD24-2 / MWD30-2)
3-21
#813632 - Revision B - December, 2009
Pin No.
58
59
60
61
62
63
64
P52
P51
INT0
AVSS
VREF
AN7
AN6
OUT
IN
IN
IN
IN
IN
IN
Signal to Sound Buzzer:
A: Key touch sound.
B: Completion sound.
C: When the oven stops so that the food can be
checked in Automatic cooking mode.
Input Signal Which Communicates the Drawer Door Close Information to LSI:
Door opened; “H” level 5V).
Door closed; “L” level signal(0V).
Signal to Synchronize LSI With Commercial
Power Source Frequency:
This is the basic
timing for all real time processing of LSI.
A/D Converter Power Source Voltage: The power source voltage to drive the A/D
converter in the LSI.
Reference Voltage Input Terminal: A reference voltage applied to the A/D converter
in the LSI. Connected to +5V.
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.
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 con-
verter built into the LSI.
Signal I/O Description
A
B
C
H: +5V
L: GND
0.1 sec
2.0 sec
1.0 sec 1.0 sec
16.7 msec.
H : +5V
L : GND