CMOS DRAM

KM44C4005C, KM44C4105C

This is a family of 4,194,304 x 4 bit Quad CAS with Extended Data Out Mode CMOS DRAMs. Extended Data Out Mode offers high

speed random access of memory cells within the same row, so called Hyper Page Mode. Refresh cycle (2K Ref. or 4K Ref.), access

time (-5 or -6), 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 avail-

able in L-version. Four separate CAS pins provide for seperate I/O operation allowing this device to operate in parity mode.

This 4Mx4 Extended Data Out Quad CAS DRAM family is fabricated using Samsung

′s advanced CMOS process to realize high band-

width, low power consumption and high reliability.

• Part Identification

- KM44C4005C/C-L (5V, 4K Ref.)

- KM44C4105C/C-L (5V, 2K Ref.)

• Extended Data Out mode operation

(Fast Page Mode with Extended Data Out)

• Four separate CAS pins provide for separate I/O operation

• CAS-before-RAS refresh capability

• RAS-only and Hidden refresh capability

• Self-refresh capability (L-ver only)

• Fast parallel test mode capability

• TTL compatible inputs and outputs

• Early Write or output enable controlled write

• JEDEC Standard pinout

• Available in Plastic SOJ and TSOP(II) packages

• Single +5V

±10% power supply

Control

Clocks

RAS

CAS0 - 3

W

Vcc

Vss

DQ0

to

DQ3

A0-A11

A0 - A9

Memory Array

4,194,304 x 4

Cells

SAMSUNG ELECTRONICS CO., LTD. reserves the right to

change products and specifications without notice.

4M x 4Bit CMOS Quad CAS DRAM with Extended Data Out

DESCRIPTION

FEATURES

FUNCTIONAL BLOCK DIAGRAM

• Refresh Cycles

Part

NO.

Refresh

cycle

Refresh period

Normal

L-ver

C4005C

4K

64ms

128ms

C4105C

2K

32ms

• Performance Range

Speed

-5

50ns

13ns

84ns

20ns

-6

60ns

15ns

104ns

25ns

• Active Power Dissipation

Speed

Refresh Cycle

4K

2K

-5

495

605

-6

440

550

Unit : mW

Data out

Buffer

Data in

Buffer

OE

Col. Address Buffer

Row Address Buffer

Refresh Counter

Refresh Control

Refresh Timer

Column Decoder

Row Decoder

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