LH532000B SHARP [Sharp Electrionic Components], LH532000B Datasheet - Page 3

• Manufacturer Part Number: LH532000B
• Description: CMOS 2M (256K x 8/128K x 16) MROM
• Manufacturer: SHARP [Sharp Electrionic Components]

CMOS 2M MROM
PIN DESCRIPTION
NOTES:
1. D
2. The active levels of OE/OE and OE
NOTE: Pin numbers apply to the 40-pin DIP or SOP.
and data output (D
Selecting DC allows the outputs to be active for both high and low levels applied to this pin.
It is recommended to apply either a HIGH or a LOW to the DC pin.
D
A
SIGNAL
OE/OE
15
0
0
OE
A
/A
CE
– A
– D
–1
1
–1
/OE
OE/OE
16
15
pin becomes LSB address input (A
BYTE
1
/DC
A
A
A
A
A
A
A
CE
A
A
A
A
A
A
A
A
A
A
13
12
16
15
14
10
11
9
8
7
6
5
4
3
2
0
1
35
36
37
Address input (BYTE mode)
Address input
Data output
Chip enable input
Output enable input
32
33
34
38
39
40
10
12
31
2
3
4
5
6
7
8
9
1
15
) when in word mode. BYTE input pin selects bit configuration.
SWITCHOVER
PIN NAME
BYTE/WORD
BUFFER
BUFFER
CIRCUIT
OE
CE
1
/OE
1
/DC are mask-programmable.
Figure 3. LH532000B Block Diagram
–1
) when the bit configuration is set in byte mode,
GENERATOR
ADDRESS
BUFFER
TIMING
29
A
-1
NOTE
1
1
2
COLUMN SELECTOR
SENSE AMPLIFIER
(131,072 x 16)
V
(262,144 x 8)
21
OE
CC
MEMORY
MATRIX
SIGNAL
1
BYTE
GND
/OE
V
11
CC
GND
1
/DC
30
Output enable input or
Don’t care
Byte/word mode switch
Power supply (+5 V)
Ground
PIN NAME
LH532000B
16
14
23
20
18
28
26
24
22
19
29
27
25
17
15
13
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
D
532000B-2
15
14
13
12
11
10
9
8
6
5
4
3
2
1
7
0
NOTE
2
3