V54C3256804VT datasheet(18/52 Pages) MOSEL

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V54C3256(16/80/40)4V(T/S/B) Rev. 1.6 September 2002

MOSEL VITELIC

V54C3256(16/80/40)4V(T/S/B)

AC Characteristics 1,2, 3

TA = 0 to 70 °C; VSS = 0 V; VDD = 3.3 V ± 0.3 V, tT = 1 ns

Symbol

Parameter

Limit Values

Unit

Note

-6

-7PC

-7

-8PC

Min. Max. Min. Max. Min. Max. Min. Max.

Clock and Clock Enable

1tCK

Clock Cycle Time

CAS Latency = 3

CAS Latency = 2

7.5

–

7.5

–

2tCK

Clock Frequency

CAS Latency = 3

CAS Latency = 2

–

166

133

–

143

133

–

143

100

–

125

100

MHz

3tAC

Access Time from Clock

CAS Latency = 3

CAS Latency = 2

–

5.4

–

5.4

–

5.4

–

2, 4

4tCH

Clock High Pulse Width

2.5

–

2.5

–

2.5

–3–ns

5tCL

Clock Low Pulse Width

2.5

–

2.5

–

2.5

–3–ns

6tT

Transition Tim

0.3

1.2

0.3

1.2

0.3

1.2

0.5

Setup and Hold Times

7tIS

Input Setup Time

1.5

–

1.5

–

1.5

–2–ns

8tIH

Input Hold Time

0.8

–

0.8

–

0.8

–1–ns

9tCKS

Input Setup Time

1.5

–

1.5

–

1.5

–2–ns

tCKH

CKE Hold Time

0.8

–

0.8

–

0.8

–1–ns

tRSC

Mode Register Set-up Time

–

tSB

Power Down Mode Entry Time

708ns

Common Parameters

tRCD

Row to Column Delay Time

–

tRP

Row Precharge Time

–

tRAS

Row Active Time

100K

100k

tRC

Row Cycle Time

–

tRRD

Activate(a) to Activate(b) Command Period

–

tCCD

CAS(a) to CAS(b) Command Period

–

CLK

Refresh Cycle

tREF

Refresh Period (8192 cycles)

—

tSREX

Self Refresh Exit Time

—

CLK

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