Sharp LH53259T, LH53259D, LH53259N Datasheet
LH53259
CMOS 256K (32K × 8) MROM
FEATURES
•• 32,768 words × 8 bit organ ization
•• Access time: 150 ns (MAX.)
•• Low-power consumption:
Operating: 137.5 mW (MAX.)
Standby: 550 µW (MAX.)
•• Programmab le o utput enable
•• Static operatio n
•• TTL compa tible I/O
•• Three-state outpu ts
•• Si ngl e +5 V pow e r supp ly
•• Pa ckage s :
28-pin , 600-mil DIP
28-pin , 450-mil SOP
28-pin , 8 × 13 .4 m m
2
TSOP (Type I)
•• JEDEC s tandard EPROM pinout (DIP)
DESCRIPTION
The LH53259 is a mask-programmable RO M organized as 32,768 × 8 bits. It is fabricated using silicon-gate
CMOS process technology.
PIN CONNECTIONS
53259-1
TOP VIEW
28-PIN DIP
28-PIN SOP
1
2
3
4
7
8
A
2
A
5
26
25
24
23
22
21
18
15
A
7
A
6
5
6
A
3
A
4
20
19
A
12
GND
A
13
A
8
A
11
A
10
CE
D
7
D
6
D
3
9
10
11
28
27
A
14
A
1
V
CC
12
17
D
5
16
D
4
D
1
D
2
A
0
D
0
A
9
13
14
NC
OE/OE
Figure 1. Pin Connections for DI P and
SOP Packages
1
2
3
4
7
8
NC
A
13
26
25
24
23
22
21
18
15
A
9
A
8
5
6
V
CC
A
14
20
19
OE/OE
A
11
D
7
D
6
D
4
GND
D
1
D
0
A
2
9
10
11
28
27
CE
A
12
A
10
12
17
A
0
16
A
1
A
5
A
4
A
7
A
6
D
5
13
14
D
3
53259-7
TOP VIEW28-PIN TSOP (Type I)
A
3
D
2
Figure 2. Pin Connections for TSOP Package
1
NOTE:
1. The active level of OE/OE is mask-programm able.
TRUTH TABLE
CE OE/OE MODE D0 - D
7
SUPPLY CURRENT NOTE
HX
Non selected High-Z
Standby 1
L
L/H
Operating
H/L Selected D
OUT
NOTE:
1. X = H or L
ABSOLUTE MAXIMUM RATINGS
PARAMETER SYMBOL RATING UNIT
Suppl y v olt age V
CC
–0.3 to +7.0 V
53259-2
A
3
A
2
A
1
A
12
A
11
A
10
A
9
A
8
28
2
23
21
24
4
7
8
A
7
A
6
V
CC
A
4
16
17
181119
D
0
MEMORY
MATRIX
(32,768 x 8)
SENSE AMPLIFIER
14
3
GND
D
1D2D3D4D5D6D7
22
1512
13
6
25
A
5
5
A
13
26
OE/OE
ADDRESS BUFFER
CE
A
0
ADDRESS DECODER
COLUMN SELECTOR
CE
BUFFER
OE
BUFFER
A
14
27
20
TIMING
GENERATOR
NOTE: Pin numbers apply to the 28-pin DIP or SOP.
9
10
OUTPUT BUFFER
Figure 3. LH53259 Block Diagram
PIN DESCRIPTION
SIGNAL PIN NAME NOTE
A0 – A
14
Addres s i npu t
D
0
– D
7
Data o utp ut
CE Chip e nab le inp ut
OE/
OE Output en abl e i npu t 1
SIGNAL PIN NAME NOTE
V
CC
Power sup ply (+ 5 V)
GND
Ground
NC No conne cti on
LH53259 CMOS 256K MROM
2
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