LH53259D 데이터 시트보기 (PDF) - Sharp Electronics
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LH53259D Datasheet PDF : 6 Pages
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LH53259
CMOS 256K MROM
A14 27
A13 26
A12 2
A11 23
A10 21
A9 24
A8 25
A7 3
A6 4
A5 5
A4 6
A3 7
A2 8
A1 9
A0 10
MEMORY
MATRIX
(32,768 x 8)
COLUMN SELECTOR
SENSE AMPLIFIER
CE 20
CE
BUFFER
TIMING
GENERATOR
OE/OE 22
OE
BUFFER
OUTPUT BUFFER
28 14
VCC GND
NOTE: Pin numbers apply to the 28-pin DIP or SOP.
11 12 13 15 16 17 18 19
D0 D1 D2 D3 D4 D5 D6 D7
Figure 3. LH53259 Block Diagram
53259-2
PIN DESCRIPTION
SIGNAL
A0 – A14
D0 – D7
CE
OE/OE
PIN NAME
Address input
Data output
Chip enable input
Output enable input
NOTE
1
NOTE:
1. The active level of OE/OE is mask-programmable.
SIGNAL
VCC
GND
NC
PIN NAME
Power supply (+5 V)
Ground
No connection
NOTE
TRUTH TABLE
CE
OE/OE
H
X
L
L/H
H/L
NOTE:
1. X = H or L
MODE
Non selected
Selected
D0 - D7
High-Z
DOUT
SUPPLY CURRENT
Standby
Operating
NOTE
1
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Supply voltage
SYMBOL
VCC
RATING
–0.3 to +7.0
2
UNIT
V
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