MT47H64M8B6-25ELDTR datasheet(35/133 Pages) MICRON

Part #	MT47H64M8B6-25ELDTR

Description	512Mb: x4, x8, x16 DDR2 SDRAM

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Manufacturer	MICRON [Micron Technology]

Direct Link	http://www.micron.com

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35 / 133 page

Table 12: AC Operating Specifications and Conditions (Continued)

Not all speed grades listed may be supported for this device; refer to the title page for speeds supported; Notes: 1–5 apply to the entire table;

VDDQ = 1.8V ±0.1V, VDD = 1.8V ±0.1V

AC Characteristics

-187E

-25E

-25

-3E

-3

-37E

-5E

Units Notes

Parameter

Symbol

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Min

Max

Input setup time

tISb

125

–

175

–

175

–

200

–

200

–

250

–

350

–

ps

31, 33

Input hold time

tIHb

200

–

250

–

250

–

275

–

275

–

375

–

475

–

ps

31, 33

Input setup time

tISa

325

–

375

–

375

–

400

–

400

–

500

–

600

–

ps

31, 33

Input hold time

tIHa

325

–

375

–

375

–

400

–

400

–

500

–

600

–

ps

31, 33

Input pulse width

tIPW

0.6

–

0.6

–

0.6

–

0.6

–

0.6

–

0.6

–

0.6

–

tCK

18, 32

ACTIVATE-to-

ACTIVATE delay,

same bank

tRC

54

–

55

–

55

–

54

–

55

–

55

–

55

–

ns

18, 34,

51

ACTIVATE-to-READ

or WRITE delay

tRCD

13.125

–

12.5

–

15

–

12

–

15

–

15

–

15

–

ns

18

ACTIVATE-to-

PRECHARGE delay

tRAS

40

70K

40

70K

40

70K

40

70K

40

70K

40

70K

40

70K

ns

18, 34,

35

PRECHARGE period

tRP

13.125

–

12.5

–

15

–

12

–

15

–

15

–

15

–

ns

18, 36

PRE-

CHARGE

ALL period

<1Gb

tRPA

13.125

–

12.5

–

15

–

12

–

15

–

15

–

15

–

ns

18, 36

≥1Gb

tRPA

15

–

15

–

17.5

15

18

18.75

20

ns

18, 36

ACTIVATE

-to-

ACTIVATE

delay

different

bank

x4, x8

tRRD

7.5

–

7.5

–

7.5

–

7.5

–

7.5

–

7.5

–

7.5

–

ns

18, 37

x16

tRRD

10

–

10

–

10

–

10

–

10

–

10

–

10

–

ns

18, 37

4-bank

activate

period

(

≥1Gb)

x4, x8

tFAW

35

–

35

–

35

–

37.5

–

37.5

–

37.5

–

37.5

–

ns

18, 38

x16

tFAW

45

–

45

–

45

–

50

–

50

–

50

–

50

–

ns

18, 38

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