Casio QT-2000 Service Manual page 31

5. GA4 (MN56020KSJ)
Pin No. Name
1 VSS
2 MD2
3 MD3
4 MD4
5 MD5
6 MD6
7 MD7
8 SVSS
9 MA0
10 MA1
11 MA2
12 MA3
13 MA4
14 MA5
15 SVSS
16 MA6
17 MA7
18 MA8
19 MA9
20 SVSS
21 MA10
22 MA11
23 MA12
24 MA13
25 VSS
26 MA14
27 MA15
28 MA16
29 _INT
30 _RESET
31 AB19
32 AB18
33 AB17
34 AB16
35 AB15
36 AB14
37 VSSI
38 AB13
39 AB12
40 AB11
41 AB10
42 AB9
43 AB8
44 AD7
45 AD6
46 AD5
47 AD4
48 AD3
49 AD2
50 VDD
Description
GND
Data signal for MASS memory (MD2)
Data signal for MASS memory (MD3)
Data signal for MASS memory (MD4)
Data signal for MASS memory (MD5)
Data signal for MASS memory (MD6)
Data signal for MASS memory (MD7)
GND
Address signal for MASS memory (MA0)
Address signal for MASS memory (MA1)
Address signal for MASS memory (MA2)
Address signal for MASS memory (MA3)
Address signal for MASS memory (MA4)
Address signal for MASS memory (MA5)
GND
Address signal for MASS memory (MA6)
Address signal for MASS memory (MA7)
Address signal for MASS memory (MA8)
Address signal for MASS memory (MA9)
GND
Address signal for MASS memory (MA10)
Address signal for MASS memory (MA11)
Address signal for MASS memory (MA12)
Address signal for MASS memory (MA13)
GND
Address signal for MASS memory (MA14)
Address signal for MASS memory (MA15)
Address signal for MASS memory (MA16)
Initilize signal
Reset signal
Address bus (AB19)
Address bus (AB18)
Address bus (AB17)
Address bus (AB16)
Address bus (AB15)
Address bus (AB14)
GND
Address bus (AB13)
Address bus (AB12)
Address bus (AB11)
Address bus (AB10)
Address bus (AB9)
Address bus (AB8)
Address / Data bus (AD7)
Address / Data bus (AD6)
Address / Data bus (AD5)
Address / Data bus (AD4)
Address / Data bus (AD3)
Address / Data bus (AD2)
VCC
— 29 —
I n / O u t
-
In / Out
In / Out
In / Out
In / Out
In / Out
In / Out
-
Out
Out
Out
Out
Out
Out
-
Out
Out
Out
Out
-
Out
Out
Out
Out
-
Out
Out
Out
Out
In
In
In
In
In
In
In
-
In
In
In
In
In
In
In / Out
In / Out
In / Out
In / Out
In / Out
In / Out
In