AL-2020/2035/2040/2050/2060 CIRCUIT DIAGRAM 14 - 17
RAMDB0
RAMDB9
RAMDB10
RAMDB11
RAMDB12
RAMDB13
RAMDB14
RAMDB15
RAMDB7
RAMDB8
RAMDB3
RAMDB1
RAMDB5
RAMDB6
RAMDB2
RAMDB4
A12
A7
A10
A11
A17
A9
A12
A5
A16
A14
A1
D14
A15
A8
A6
D10
A2
A4
A10
A14
A13
A15
A3
A6
A16
A7
A11
A2
A4
A8
D9
A13
A9
A18
A19
A5
A1
A0
A3
MAD5
MAD2
MAD7
MAD9
MAD8
MAD3
MAD10
MAD11
MAD1
MAD0
MAD6
MAD4
MAD12
A20
D8
D11
D12
D13
D15
A17
D15
D7
D12
D14
D6
D13
D5
D4
D11
D3
D10
D2
D9
D1
D8
D0
A1
VCC3
VCC3
VCC3
VCC3
VCC3
VCC3
VCC3
VCC3
VCC3
VCC3
VCC3
/C
S
FROM
(1)
MAD[12
..
0]
(2)
BANK0
(2)
BANK1
(2)
/
S
DC
S
(2)
/
S
DWDE
(2)
/
S
DCA
S
(2)
/
S
DRA
S
(2)
DQM0
(2)
DQM1
(2)
S
DCLK
(2)
S
DCKE
(2)
D[15
..
0]
(1,2,3,13)
RAMDB[15
..
0]
(2)
/C
SS
RAM
(1)
/RD
(1,2,3,5)
/HWR
(1,3)
A[20
..
0]
(1,2,3)
RY/BY
(1)
/RE
S
ET0
(2,5,9,12)
VPP
(9)
VPP
(9)
S
CL
(1)
S
DA
(1)
/HWR
(1,3)
/RD
(1,2,3,5)
FlashROM
VPP
Controll
Serial
EE-PROM
TP334
TP337
TP346
TP326
TP852
TP813
TP343
R80
NM
C90
0
.
1U
R83
10K
J
TP350
C91
0
.
1U
TP358
TP336
C92
0
.
1U
TP341
TP840
IC5
CAT24WC08LI
E0
1
E1
2
E2
3
V
SS
4
S
DA
5
S
CL
6
WC
7
VCC
8
C93
0
.
1U
TP359
C94
0
.
1U
TP353
TP365
TP338
C85
0
.
1U
R82
NM
C95
0
.
1U
R86
N
M
TP347
R81
NM
C8
7
22000P
TP352
TP367
TP816
TP851
TP812
TP889
TP340
C355
NM
TP839
TP331
TP360
TP335
TP327
TP328
C89
0
.
1U
TP342
TP369
R77
NM
TP363
C353
NM
TP357
TP339
TP354
TP850
C83
NM
IC7
S
29AL016D70TFI020
A0
25
A1
24
A2
23
A3
22
A4
21
A5
20
A6
19
A7
18
A8
8
A9
7
A10
6
A11
5
A12
4
A13
3
A14
2
A15
1
A16
48
A17
17
DQ0
29
DQ1
31
DQ2
33
DQ3
35
DQ4
38
DQ5
40
DQ6
42
DQ7
44
DQ8
30
DQ9
32
DQ10
34
DQ11
36
DQ12
39
DQ13
41
DQ14
43
DQ15
45
A19
9
NC
10
A18
16
GND
46
GND
27
VCC
37
VPP
13
BYTE
47
OE
28
CE
26
WE
11
RP
12
WP
14
RY/BY
15
C352
NM
C86
NM
C354
NM
R74
10KJ
TP838
TP345
IC6
S
DRAM
(16b
it
x
4b
ank
)
A0
23
A1
24
A2
25
A3
26
A4
29
A5
30
A6
31
A7
32
A8
33
A9
34
A10
22
BA0
20
DQ0
2
DQ1
4
DQ2
5
DQ3
7
DQ4
8
DQ5
10
DQ6
11
DQ7
13
DQ8
42
DQ9
44
DQ10
45
DQ11
47
DQ12
48
DQ13
50
DQ14
51
DQ15
53
VCC
1
VCC
27
V
SS
54
V
SS
28
VCCQ
9
V
SS
41
VCCQ
43
VCCQ
49
V
SS
Q
6
V
SS
Q
12
V
SS
Q
46
V
SS
Q
52
LDQM
15
UDQM
39
WE
16
CA
S
17
RA
S
18
C
S
19
CLKE
37
CLK
38
NC
40
NC
36
VCCQ
3
VCC
14
BA1
21
A11
35
R84
10KJ
TP368
TP726
R85
0
J
TP329
TP853
TP344
TP362
IC8
I
S
63LV1024L-12J-TR
I/O0
6
A0
1
I/O1
7
A1
2
I/O2
10
A2
3
I/O3
11
A3
4
I/O4
22
A4
13
I/O5
23
A5
14
I/O6
26
A6
15
I/O7
27
A7
16
A8
17
A9
18
A10
19
A11
20
A12
21
A13
29
A14
30
C
S
1
5
OE
28
WE
12
VDD
8
GND
9
VDD
24
A15
31
A16
32
GND
25
R76
1
00J
C84
0
.
1U
C82
0
.
1U
TP349
TP356
TP849
TP361
TP348
TP888
J1,J2
1
2
3
C88
0
.
1U
TP355
TP333
TP332
TP330
R88
NM
TP366
A
A
B
B
C
C
D
D
E
E
4
4
3
3
2
2
1
1
MCU
PWB
(Memory
section)
(AL-2050/2060)
4/16
Summary of Contents for AL-2020
Page 217: ...Memo ...