HY5PS12421F-E3 datasheet(21/35 Pages) HYNIX

Part #	HY5PS12421F-E3

Description	512Mb DDR2 SDRAM

Download	35 Pages

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Manufacturer	HYNIX [Hynix Semiconductor]

Direct Link	http://www.skhynix.com/kor/main.do

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21 / 35 page

Rev. 1.4 / July 2006

21

1HY5PS12421(L)F

HY5PS12821(L)F

HY5PS121621(L)F

Parameter

Symbol

DDR2-400

DDR2-533

Unit

Note

min

max

min

max

Four Active Window for 2KB page size products

tFAW

50

-50

-

CAS to CAS command delay

tCCD

2

tCK

Write recovery time

tWR

15

-15

-

ns

Auto precharge write recovery + precharge time

tDAL

WR+tRP*

-

WR+tRP*

-

tCK

14

Internal write to read command delay

tWTR

10

-7.5

-

ns

24

Internal read to precharge command delay

tRTP

7.5

ns

3

Exit self refresh to a non-read command

tXSNR

tRFC + 10

ns

Exit self refresh to a read command

tXSRD

200

-

200

-

tCK

Exit precharge power down to any non-read

command

tXP

2

-

2

-

tCK

Exit active power down to read command

tXARD

2

tCK

1

Exit active power down to read command

(Slow exit, Lower power)

tXARDS

6 - AL

tCK

1, 2

CKE minimum pulse width

(high and low pulse width)

tCKE

3

tCK

ODT turn-on delay

tAOND

22

2

tCK

ODT turn-on

tAON

tAC(min)

tAC(max)+1

tAC(min)

tAC(max)+

1

ns

16

ODT turn-on(Power-Down mode)

tAONPD

tAC(min)+2

2tCK+

tAC(max)

+1

tAC(min)+2

2tCK+

tAC(max)+

1

ns

ODT turn-off delay

tAOFD

2.5

tCK

ODT turn-off

tAOF

tAC(min)

tAC(max)+

0.6

tAC(min)

tAC(max)+

0.6

ns

17

ODT turn-off (Power-Down mode)

tAOFPD

tAC(min)+2

2.5tCK+tAC

(max)+1

tAC(min)+2

2.5tCK+tA

C(max)+1

ns

ODT to power down entry latency

tANPD

3

tCK

ODT power down exit latency

tAXPD

8

tCK

OCD drive mode output delay

tOIT

0

12

0

12

ns

Minimum time clocks remains ON after CKE

asynchronously drops LOW

tDelay

tIS+tCK+tIH

ns

15

-Continued

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