TM16EN64HPU, TM16EN64LPU 16777216 BY 64BIT

TM16EN72HPU, TM16EN72LPU 16777216 BY 72BIT

EXTENDEDDATAOUT DYNAMIC RAM MODULES

SMMS695A − AUGUST 1997 − REVISED NOVEMBER 1997

11

POST OFFICE BOX 1443

capacitance

over recommended ranges of supply voltage and ambient temperature,

f = 1 MHz (see Note 2)

PARAMETER

’16EN64xPU

’16EN72xPU

UNIT

PARAMETER

MIN

MAX

MIN

MAX

UNIT

Ci(A)

Input capacitance, A0 − A12

82

92

pF

Ci(OE)

Input capacitance, OEx

58

65

pF

Ci(CAS)

Input capacitance, CASx

16

23

pF

Ci(RAS)

Input capacitance, RASx

58

65

pF

Ci(W)

Input capacitance, WEx

58

65

pF

Co

Output capacitance

8

8

pF

NOTE 2: VDD = NOM supply voltage ± 10%, and the bias on pins under test is 0 V.

switching characteristics over recommended ranges of supply voltage and ambient temperature

(see Note 3)

PARAMETER

’16ENxxxPU-40

’16ENxxxPU-50

’16ENxxxPU-60

UNIT

PARAMETER

MIN

MAX

MIN

MAX

MIN

MAX

UNIT

tAA

Access time from column address (see Note 4)

20

25

30

ns

tCAC

Access time from CASx (see Note 4)

11

13

15

ns

tCPA

Access time from CASx precharge (see Note 4)

22

28

35

ns

tRAC

Access time from RASx (see Note 4)

40

50

60

ns

tOEA

Access time from OEx (see Note 4)

11

13

15

ns

tCLZ

Delay time, CASx to output in low impedance

0

0

0

ns

tREZ

Output buffer turn off delay from RASx (see Note 5)

3

11

3

13

3

15

ns

tCEZ

Output buffer turn off delay from CASx (see Note 5)

3

11

3

13

3

15

ns

tOEZ

Output buffer turn off delay from OEx (see Note 5)

3

11

3

13

3

15

ns

tWEZ

Output buffer turn off delay from WEx (see Note 5)

3

11

3

13

3

15

ns

NOTES:

3. With ac parameters, it is assumed that tT = 2 ns.

4. Access times are measured with output reference levels of VOH = 2 V and VOL = 0.8 V.

5. The maximum values of tREZ, tCEZ, tOEZ, and tWEZ are specified when the output is no longer driven. Data in should not be driven

until one of the applicable maximum specs is satisfied.

EDO timing requirements

’16ENxxxPU-40

’16ENxxxPU-50

’16ENxxxPU-60

UNIT

MIN

MAX

MIN

MAX

MIN

MAX

UNIT

tHPC

Cycle time, EDO page mode, read-write

16

20

25

ns

tPRWC Cycle time, EDO read-write

47

57

68

ns

tCSH

Delay time, RASx active to CASx precharge

32

40

48

ns

tCHO

Hold time, OEx from CASx

5

5

5

ns

tDOH

Hold time, output from CASx

5

5

5

ns

tCAS

Pulse duration, CASx active (see Note 6)

6

10 000

8

10 000

10

10 000

ns

tWPE

Pulse duration, WEx active (output disable only)

5

5

5

ns

tOCH

Setup time, OEx before CASx

5

5

5

ns

tCP

Pulse duration, CASx precharge

6

8

10

ns

tOEP

Precharge time, OEx

5

5

5

ns

NOTE 6: In a read-write cycle, tCWD and tCWL must be observed.