Sharp MMD24S 用户手册
2
MMD24S
MMD24B
MMD24B
27
COM0
OUT
Common data signal.
Connected to LCD signal C4.
28
VL3
IN
Connected VC (+5V).
29 - 3
P27- P25
OUT
Terminal not used.
32
SEG20
OUT
Segment data signal.
Connected to LCD segment S24.
33
P23
IN
Signal coming from touch key.
When any one of J-4 line keys on key matrix is touched, a corresponding signal from P0-
P7 will be input into P23. When no key is touched, the signal is held at "L" level.
P7 will be input into P23. When no key is touched, the signal is held at "L" level.
34
P22
IN
Signal similar to P23.
When any one of J-3 line keys on key matrix is touched, a corresponding signal will be
input into P22.
input into P22.
35
P2
IN
Signal similar to P23.
When any one of J-2 line keys on key matrix is touched, a corresponding signal will be
input into P2.
input into P2.
36
P20
IN
Signal similar to P23.
When any one of J- line keys on key matrix is touched, a corresponding signal will be
input into P20.
input into P20.
37
P7
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P20 - P23 terminal while
one of J-2 line key on matrix is touched.
one of J-2 line key on matrix is touched.
38
P6
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P20 - P23 terminal while
one of J- line key on matrix is touched.
one of J- line key on matrix is touched.
39
P5
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P20 - P23 terminal while
one of J-0 line key on matrix is touched.
one of J-0 line key on matrix is touched.
40
P4
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P20 - P23 terminal while
one of J-9 line key on matrix is touched.
one of J-9 line key on matrix is touched.
4
P3
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P20 - P23 terminal while
one of J-8 line key on matrix is touched.
one of J-8 line key on matrix is touched.
42
P2
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P20 - P23 terminal while
one of J-7 line key on matrix is touched.
one of J-7 line key on matrix is touched.
43
P
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P20 - P23 terminal while
one of J-6 line key on matrix is touched.
one of J-6 line key on matrix is touched.
44
P0
OUT
Key strobe signal.
Signal applied to touch-key section. A pulse signal is input to P20 - P23 terminal while
one of J-5 line key on matrix is touched.
one of J-5 line key on matrix is touched.
45
P07
OUT
Fan motor (Drawer) driving signal.
To turn on and off relay(RY4).
“H” level: During fan motor ON.
“L” level: During fan motor OFF.
46
P06
OUT
Stirrer motor driving signal.
To turn on and off relay(RY3).
“H” level: During fan motor ON.
“L” level: During fan motor OFF.
Pin No.
Signal
I/O
Description
ON
OFF
L: GND
H: +5V
ON
OFF
L: GND
H: +5V