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KM416C4000B fiches techniques PDF

Samsung semiconductor - 4M x 16bit CMOS Dynamic RAM with Fast Page Mode

Numéro de référence KM416C4000B
Description 4M x 16bit CMOS Dynamic RAM with Fast Page Mode
Fabricant Samsung semiconductor 
Logo Samsung semiconductor 





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KM416C4000B fiche technique
KM416C4000B, KM416C4100B
CMOS DRAM
4M x 16bit CMOS Dynamic RAM with Fast Page Mode
DESCRIPTION
This is a family of 4,194,304 x 16 bit Fast Page Mode CMOS DRAMs. Fast Page 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) are optional features of this family. All of this fam-
ily have CAS-before-RAS refresh, RAS-only refresh and Hidden refresh capabilities. This 4Mx16 Fast Page Mode DRAM family is fabri-
cated using Samsungs advanced CMOS process to realize high band-width, low power consumption and high reliability.
FEATURES
• Part Identification
- KM416C4000B(5.0V, 8K Ref.)
- KM416C4100B(5.0V, 4K Ref.)
Active Power Dissipation
Speed
-45
-5
-6
8K
550
495
440
Unit : mW
4K
715
660
605
Refresh Cycles
Part
NO.
KM416C4000B*
KM416C4100B
Refresh
cycle
8K
4K
Refresh time
Normal
64ms
* Access mode & RAS only refresh mode
: 8K cycle/64ms
CAS-before-RAS & Hidden refresh mode
: 4K cycle/64ms
Performance Range
Speed tRAC
tCAC
-45 45ns 12ns
-5 50ns 13ns
-6 60ns 15ns
tRC
80ns
90ns
110ns
tPC
31ns
35ns
40ns
• Fast Page Mode operation
• 2CAS Byte/Word Read/Write 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 TSOP(II) package
• +5.0V±10% power supply
FUNCTIONAL BLOCK DIAGRAM
RAS
UCAS
LCAS
W
Control
Clocks
VBB Generator
Refresh Timer
Refresh Control
Refresh Counter
A0~A12
(A0~A11)*1
A0~A8
(A0~A9)*1
Row Address Buffer
Col. Address Buffer
Note) *1 : 4K Refresh
Row Decoder
Memory Array
4,194,304 x 16
Cells
Column Decoder
Vcc
Vss
Lower
Data in
Buffer
Lower
Data out
Buffer
Upper
Data in
Buffer
Upper
Data out
Buffer
DQ0
to
DQ7
OE
DQ8
to
DQ15
SAMSUNG ELECTRONICS CO., LTD. reserves the right to
change products and specifications without notice.

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