HM51W17400LTS-7 datasheet(13/33 Pages) HITACHI

Part #	HM51W17400LTS-7

Description	4,194,304-word x 4-bit Dynamic RAM

Download	33 Pages

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Manufacturer	HITACHI [Hitachi Semiconductor]

Direct Link	http://www.renesas.com/eng

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13 / 33 page

HM51W16400 Series, HM51W17400 Series

13

Read-Modify-Write Cycle

HM51W16400/HM51W17400

-5

-6

-7

Parameter

Symbol

Min

Max

Min

Max

Min

Max

Unit

Notes

Read-modify-write cycle time

t

RWC

131

—

155

—

181

—

ns

RAS to WE delay time

t

RWD

73

—

85

—

98

—

ns

14

CAS to WE delay time

t

CWD

36

—

40

—

46

—

ns

14

Column address to

WE delay time

t

AWD

48

—

55

—

63

—

ns

14

OE hold time from WE

t

OEH

13

—

15

—

18

—

ns

Refresh Cycle

HM51W16400/HM51W17400

-5

-6

-7

Parameter

Symbol

Min

Max

Min

Max

Min

Max

Unit

Notes

CAS setup time (CBR refresh cycle) t

CSR

5—

ns

CAS hold time (CBR refresh cycle) t

CHR

8

—

10

—

10

—

ns

WE setup time (CBR refresh cycle) t

WRP

0—

ns

WE hold time (CBR refresh cycle)

t

WRH

8

—

10

—

10

—

ns

RAS precharge to CAS hold time

t

RPC

5—

ns

Fast Page Mode Cycle

HM51W16400/HM51W17400

-5

-6

-7

Parameter

Symbol

Min Max

Unit

Notes

Fast page mode cycle time

t

PC

35

—

40

—

45

—

ns

Fast page mode

RAS pulse width

t

RASP

—

100000 —

100000 ns

16

Access time from

CAS precharge

t

CPA

—

30

—

35

—

40

ns

9, 17, 20

RAS hold time from CAS precharge t

CPRH

30

—

35

—

40

—

ns

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HM51W17400LTS-7 Datasheet(PDF) 13 Page - Hitachi Semiconductor

HM51W17400LTS-7 Datasheet(HTML) 13 Page - Hitachi Semiconductor

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