Sharp KB-3411JS Supplemental Service Manual page 19

The I/O signal of the LSIis detailed in the following table.
Pin No. Signal
1 AN5
2 AN4
3 AN3 OUT
4 AN2
5 AN1
6 AN0
7 CNVSS
8 RESET
9 P62 OUT
10 P61 IN/OUT Memory (EEPROM) data input/output.
11 VSS
12 XIN
13 XOUT OUT
14 VCC
15 P60
16 P37
17 P36 OUT
18 P35 OUT
19 P34 OUT
20 RXD2
21 TXD2
22 SCLK2 OUT
DESCRIPTION OF LSI (IC-1)
I/O
IN Temperature measurement input: OVEN THERMISTOR.
By inputting DC voltage corresponding to the temperature detected by the thermistor, this
input is converted into temperature by the A/D converter built into the LSI.
IN Turminal not used.
Door lock motor driving signal.
To turn on and off shut-off relay(RY8).
"H"level during door lock motor driving
"L" level otherwise
IN Input signal which communicates the oven door locked information to LSI.
Door unlocked; "H" level signal(+5V).
Door locked; "L" level signal(0V).
IN Input signal which communicates the oven door unlocked information to LSI.
Door locked; "H" level signal(+5V).
Door unlocked; "L" level signal(0V).
IN Turminal not used.
IN Power source voltage: 0V (GND).
VC voltage of power source circuit input. Connected GND.
IN Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is applied. Temporarily set to
"L" level the moment power is applied, at this time the LSI is reset. Thereafter set at "H" level.
Memory (EEPROM) clock out.
IN Power source voltage: 0V (GND).
VS voltage of power source circuit input. Connected GND.
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.
Internal clock oscillation frequency control output.
Output to control oscillation input of Xin.
IN Power source voltage: +5V.
VC voltage of power source circuit input.
IN Plus signal coming from the Microwave drawer door open-close motor is input into P60
as revolution number.
IN Input signal which communicates the drawer door open information to LSI from
the door position switch front.
Door opened; "L" level signal(0V).
Door closed; "H" level signal(+5V).
Signal to change the rotational direction is output to the Microwave drawer door
open-close motor.
Signal to change the rotational speed is output to the Microwave drawer door open-close
motor.
Power source to drive the Microwave drawer door open-close motor is output.
IN Input terminal to check the data of display.
Data signal from IC-3 is input to RXD2 to check the flow of the data.
IN Output terminal to send IC-2 the data.
The data of display is output to IC-2.
Clock timing signaI output terminal.
Clock timing signal is sent to IC-2 and IC-3.
Description
17
ON
H: +5V
During
door lock
OFF
motor driving
L: GND
KB-3411JS
KB-3411JK
KB-3411JW