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KM48C8004B Scheda tecnica(PDF) 1 Page - Samsung semiconductor

Il numero della parte KM48C8004B
Spiegazioni elettronici  8M x 8bit CMOS Dynamic RAM with Extended Data Out
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Produttore elettronici  SAMSUNG [Samsung semiconductor]
Homepage  http://www.samsung.com/Products/Semiconductor
Logo SAMSUNG - Samsung semiconductor

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KM48C8004B, KM48C8104B
CMOS DRAM
This is a family of 8,388,608 x 8 bit Extended Data Out Mode CMOS DRAMs. Extended Data Out Mode offers high speed random
access of memory cells within the same row. Refresh cycle(4K Ref. or 8K Ref.), access time (-45, -5 or -6), package type (SOJ or TSOP-
II) are optional features of this family. All of this family have CAS-before-RAS refresh, RAS-only refresh and Hidden refresh capabilities.
This 8Mx8 EDO Mode DRAM family is fabricated using Samsung
′s advanced CMOS process to realize high band-width, low power con-
sumption and high reliability.
• Part Identification
- KM48C8004B(5.0V, 8K Ref.)
- KM48C8104B(5.0V, 4K Ref.)
• Extended Data Out Mode operation
• CAS-before-RAS refresh capability
• RAS-only and Hidden refresh capability
• Fast parallel test mode capability
• TTL(5.0V) compatible inputs and outputs
• Early Write or output enable controlled write
• JEDEC Standard pinout
• Available in Plastic SOJ and TSOP(II) packages
• +5.0V
±10% power supply
Control
Clocks
RAS
CAS
W
Vcc
Vss
A0~A12
(A0~A11)*1
A0~A9
(A0~A10)*1
Memory Array
8,388,608 x 8
Cells
SAMSUNG ELECTRONICS CO., LTD. reserves the right to
change products and specifications without notice.
8M x 8bit CMOS Dynamic RAM with Extended Data Out
DESCRIPTION
FEATURES
FUNCTIONAL BLOCK DIAGRAM
Note) *1 : 4K Refresh
• Refresh Cycles
Part
NO.
Refresh
cycle
Refresh time
Normal
KM48C8004B*
8K
64ms
KM48C8104B
4K
Unit : mW
DQ0
to
DQ7
Data out
Buffer
Data in
Buffer
• Performance Range
Speed
tRAC
tCAC
tRC
tHPC
-45
45ns
12ns
74ns
17ns
-5
50ns
13ns
84ns
20ns
-6
60ns
15ns
104ns
25ns
• Active Power Dissipation
Speed
8K
4K
-45
550
715
-5
495
660
-6
440
605
* Access mode & RAS only refresh mode
: 8K cycle/64ms
CAS-before-RAS & Hidden refresh mode
: 4K cycle/64ms
Row Decoder
Column Decoder
VBB Generator
Refresh Timer
Refresh Control
Refresh Counter
Row Address Buffer
Col. Address Buffer
OE


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