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KM41C4000D Datasheet, PDF (1/20 Pages) Samsung semiconductor – 4M x 1Bit CMOS Dynamic RAM with Fast Page Mode | |||
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KM41C4000D, KM41V4000D
CMOS DRAM
4M x 1Bit CMOS Dynamic RAM with Fast Page Mode
DESCRIPTION
This is a family of 4,194,304 x 1bit Fast Page Mode CMOS DRAMs. Fast Page Mode offers high speed random access of memory cells
within the same row. Power supply voltage (+5V or +3.3V), access time (-5, -6 or -7), power consumption(Normal or Low power), and
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. Furthermore, self-refresh operation is available in Low power version.
This 4Mx1 Fast Page Mode DRAM family is fabricated using Samsungâ²s advanced CMOS process to realize high band-width, low power
consumption and high reliability. It may be used as main memory for main frames and mini computers, personal computer and high per-
formance microprocessor systems.
FEATURES
⢠Part Identification
- KM41C4000D/D-L(5V, 1K Ref.)
- KM41V4000D/D-L(3.3V, 1K Ref.)
⢠Active Power Dissipation
Speed
-5
-6
-7
3.3V
-
220
200
Unit : mW
5V
470
415
360
⢠Refresh Cycles
Part
Refresh
NO.
cycle
KM41C4000D
1K
KM41V4000D
Refresh Period
Normal L-ver
16ms 128ms
⢠Performance Range
Speed tRAC tCAC tRC tPC
-5 50ns 15ns 90ns 35ns
-6 60ns 15ns 110ns 40ns
-7 70ns 20ns 130ns 45ns
Remark
5V only
5V/3.3V
5V/3.3V
⢠Fast Page Mode operation
⢠CAS-before-RAS refresh capability
⢠RAS-only and Hidden refresh capability
⢠Self-refresh capability (3.3V, L-ver only)
⢠Fast parallel test mode capability
⢠TTL(5V)/LVTTL(3.3V) compatible inputs and outputs
⢠Common I/O using early write
⢠JEDEC Standard pinout
⢠Available in 26(20)-pin SOJ 300mil and TSOP(II)
300mil packages
⢠+5V±10% power supply(5V product)
⢠+3.3V±0.3V power supply(3.3V product)
FUNCTIONAL BLOCK DIAGRAM
RAS
CAS
W
Control
Clocks
Vcc
Vss
VBB Generator
A0~A9
Refresh Timer
Refresh Control
Refresh Counter
Row Address Buffer
Col. Address Buffer
Row Decoder
Memory Array
4,194,304 x1
Cells
Column Decoder
Data in
Buffer
D
Data out
Q
Buffer
SAMSUNG ELECTRONICS CO., LTD. reserves the right to
change products and specifications without notice.
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