28
AVR-2805/985/AVC-2890
CY7C1049CV33-10ZC (AD: IC908, 910)
LMS202IMX (CV: IC705)
14
15
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
COLUMN
DECODER
ROW DECODER
SENSE AMPS
INPUT BUFFER
DOWN
WE
OE
I/O
0
I/O
1
I/O
2
I/O
3
512K x 8
ARRAY
I/O
7
I/O
6
I/O
5
I/O
4
A
0
A
11
A
13
A
12
A
CE
A
A
16
A
17
A
9
A
18
A
10
Top View
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
WE
V
CC
V
SS
A
18
A
15
A
12
A
14
I/O
5
I/O
4
A
9
A
0
I/O
0
I/O
1
I/O
2
I/O
3
OE
A
17
A
16
A
13
CE
NC
NC
NC
NC
I/O
7
I/O
6
V
CC
V
SS
A
10
A
11
NC
NC
NC
NC
NC
NC
1
2
3
4
5
6
7
8
37
40
39
38
41
44
43
42
9
10
11
14
31
32
36
35
34
33
12
13
16
15
29
30
18
19
20
21
22
17
27
26
25
24
23
28
POWER
LMS202IMX Terminal Function
Pin Number Pin Name Pin Function
1, 3 C1+, C1− External capacitor connection pins. Recommended external capacitor C1 = 0.1µF (6.3V)
2 V+ Positive supply for TIA/EIA-232E drivers. Recommended external capacitor C4 = 0.1µF (6.3V)
4, 5 C2+, C2− External capacitor connection pins. Recommended external capacitor C2 = 0.1µF (16V)
6 V− Negative supply for TIA/EIA-232E drivers. Recommended external capacitor C3 = 0.1µF (16V)
7, 14 T1out, T2out Transmitter output pins conform to TIA/EIA-232E levels. The typical transmitter output swing is
±
8V when loaded 3kΩ load to ground. The open-circuit output voltage swings from (V+ − 0.6V)
to V−
8,13 R1in, R2in Receiver inputs accept TIA/EIA-232
9, 12 R1out and R2out Receiver output pins are TTL/CMOS compatible
10, 11 Tin1, Tin2 Transmitter input pins are TTL/CMOS compatible. Inputs of transmitter do not have pull-up
resistors. Connect all unused transmitter inputs to ground
15 GND Ground pin
16 V
S
Power supply pin for the device, +5V (
±
10%)
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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