EDS2516AFTA-6B-E datasheet(1/50 Pages) ELPIDA

Part #	EDS2516AFTA-6B-E

Description	256M bits SDRAM

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Manufacturer	ELPIDA [Elpida Memory]

Direct Link	http://www.elpida.com/en

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Document No. E0984E20 (Ver. 2.0)

Date Published May 2007 (K) Japan

Printed in Japan

URL: http://www.elpida.com

©Elpida Memory, Inc. 2006-2007

DATA SHEET

256M bits SDRAM

EDS2516AFTA (16M words

× 16 bits)

Specifications

• Density: 256M bits

• Organization

⎯ 4M words × 16 bits × 4 banks

• Package: 54-pin plastic TSOP (II)

⎯ Lead-free (RoHS compliant)

• Power supply: VDD, VDDQ = 3.3V ± 0.3V

• Clock frequency: 166MHz/133MHz (max.)

• Four internal banks for concurrent operation

• Interface: LVTTL

• Burst lengths (BL): 1, 2, 4, 8, full page

• Burst type (BT):

⎯ Sequential (1, 2, 4, 8, full page)

⎯ Interleave (1, 2, 4, 8)

• /CAS Latency (CL): 2, 3

• Precharge: auto precharge option for each burst

access

• Refresh: auto-refresh, self-refresh

• Refresh cycles: 8192 cycles/64ms

⎯ Average refresh period: 7.8μs

• Operating ambient temperature range

⎯ TA = 0°C to +70°C

Features

• Single pulsed /RAS

• Burst read/write operation and burst read/single write

operation capability

• Byte control by UDQM and LDQM

Pin Configurations

/xxx indicates active low signal.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

54

53

52

51

50

49

48

47

46

45

44

43

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

VSS

DQ15

VSSQ

DQ14

DQ13

VDDQ

DQ12

DQ11

VSSQ

DQ10

DQ9

VDDQ

DQ8

VSS

NC

UDQM

CLK

CKE

A12

A11

A9

A8

A7

A6

A5

A4

VSS

VDD

DQ0

VDDQ

DQ1

DQ2

VSSQ

DQ3

DQ4

VDDQ

DQ5

DQ6

VSSQ

DQ7

VDD

LDQM

/WE

/CAS

/RAS

/CS

BA0

BA1

A10

A0

A1

A2

A3

VDD

54-pin Plastic TSOP (II)

(Top view)

Address input

Bank select address

Data-input/output

Chip select

Row address strobe

Column address strobe

Write enable

Input/output mask

Clock enable

Clock input

Power for internal circuit

Ground for internal circuit

Power for DQ circuit

Ground for DQ circuit

No connection

A0 to A12

BA0, BA1

DQ0 to DQ15

/CS

/RAS

/CAS

/WE

UDQM,LDQM

CKE

CLK

VDD

VSS

VDDQ

VSSQ

NC

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