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IC41C1665

64K x 16 (1-MBIT) DYNAMIC RAM WITH FAST PAGE MODE

Integrated Circuit Solution Inc 

IC41C1665

IC41LV1665

AC CHARACTERISTICS(1,2,3,4,5,6)

(Recommended Operating Conditions unless otherwise noted.)

Symbol Parameter

tACH Column-Address Setup Time to CAS

Precharge during WRITE Cycle

tOEH OE Hold Time from WE during

READ-MODIFY-WRITE cycle(18)

tDS

Data-In Setup Time(15, 22)

tDH

Data-In Hold Time(15, 22)

tRWC READ-MODIFY-WRITECycleTime

tRWD RAS to WE Delay Time during

READ-MODIFY-WRITE Cycle(14)

tCWD CAS to WE Delay Time(14, 20)

tAWD Column-Address to WE Delay Time(14)

tPC

tRASP

tCPA

tPRWC

tOFF

tCLCH

tCSR

tCHR

tORD

Fast Page Mode READ or WRITE

Cycle Time(24)

Fast Page Mode RAS Pulse Width

Access Time from CAS Precharge(15)

Fast Page Mode READ-WRITE Cycle Time(24)

Output Buffer Turn-Off Delay from

CAS or RAS(13,15,19, 29)

Last CAS going LOW to First CAS

returning HIGH(23)

CAS Setup Time (CBR REFRESH)(30, 20)

CAS Hold Time (CBR REFRESH)(30, 21)

OE Setup Time prior to RAS during

HIDDEN REFRESH Cycle

tREF Refresh Period (256 Cycles)

tT

Transition Time (Rise or Fall)(2, 3)

-25

Min. Max.

15 —

4—

0—

5—

65 —

34 —

17 —

21 —

15 —

25 10k

— 14

37 —

3 15

4—

5—

7—

0—

—4

1 50

-30

Min. Max.

15 —

4—

0—

5—

85 —

46 —

25 —

32 —

20 —

30 10K

— 18

42 —

3 15

9—

10 —

10 —

0—

—4

1 50

AC TEST CONDITIONS

Output load:

Two TTL Loads and 50 pF (Vcc = 5.0V ±10%)

One TTL Load and 50 pF (Vcc = 3.3V ±10%)

-35

Min. Max.

15 —

4—

0—

5—

95 —

51 —

26 —

34 —

23 —

35 10K

— 20

49 —

3 15

10 —

10 —

10 —

0—

—4

1 50

-40

Min. Max. Units

15 — ns

5 — ns

0 — ns

5 — ns

105 — ns

56 — ns

27 — ns

36 — ns

25 — ns

40 10K ns

— 22 ns

52 — ns

3 15 ns

11 — ns

10 — ns

10 — ns

0 — ns

— 4 ms

1 50 ns

Input timing reference levels: VIH = 2.4V, VIL = 0.8V (Vcc = 5.0V ±10%);

VIH = 2.0V, VIL = 0.8V (Vcc = 3.3V ±10%)

Output timing reference levels: VOH = 2.0V, VOL = 0.8V (Vcc = 5V ±10%, 3.3V ±10%)

Integrated Circuit Solution Inc.

9

DR031-0A 10/17/2001

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