R-7N76(W)M
R-7N76(B)M
23
Pin No.
Signal
I/O
Description
ON
OFF
During
cooking
L
GND
H.
(Grill or dual)
ON
OFF
During
cooking
L
GND
H.
(Convection)
18
P50
OUT
Grill heater driving signal.
To turn on and off the grill heater relay
(RY4). "L" level during grill or dual cooking;
"H" level otherwise.
19
P47
OUT
Signal to sound buzzer.
A: key touch sound.
B: Completion sound.
20
P46
OUT
Convection motor driving signal.
To turn on and off shut-off relay (RY5). “L”
level during CONVECTION; “H” level
otherwise.
21-22
P45-P44
OUT
Timing signal output terminal for temperature measurement(OVEN).
“H” level (GND) : Temperature measuring timing. (Convection cooking or dual cooking)
“L” level (-5V) : Thermistor OPEN timing.
23
P43
IN/OUT Memory data input/output.
24
P42
OUT
Memory clock output.
25
INT1
IN
Signal to synchronize LSI with commercial power
source frequency.
This is basic timing for all real time processing of LSI.
26
INT0
IN
Connected to GND.
27
RESET
IN
Auto clear terminal.
Signal is input to reset the LSI to the initial state when power is applied. Set to “L” level
the moment power is applied, at this time the LSI is reset. Thereafter set at “H” level.
28/29
P71/P70 IN/OUT Terminal not used.
30
XIN
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.
31
XOUT
OUT
Internal clock oscillation frequency control output.
Output to control oscillation input of XIN.
32
VSS
IN
Power source voltage:-5V.
VC voltage of power source circuit input.
33
P27
IN
Signal coming from touch key.
When any one of G-12 line keys on key matrix is touched, a corresponding signal from
P12, P11,P10,P07,P06 and P05 will be input into P27. When no key is touched, the
signal is held at "L" level.
34
P26
IN
Signal similar to P27.
When any one of G-11 line keys on key matrix is touched, a corresponding signal will be
input into P26.
35
P25
IN
Signal similar to P27.
When any one of G-10 line keys on key matrix is touched, a corresponding signal will be
input into P25.
36
P24
IN
Signal similar to P27.
When any one of G-9 line keys on key matrix is touched, a corresponding signal will be
input into P24.
A
B
0.12 sec.
2.4 sec.
20 msec
H : GND
L (-5V)
