Cypress CY7C1441AV33 manual Switching Characteristics, Unit Parameter Min Max, Output Times

CY7C1441AV33

CY7C1443AV33,CY7C1447AV33

Switching Characteristics

Over the Operating Range[22, 23]

Description

–133

–100

Unit

Parameter

Min.

Max.

Min.

Max.

t

V

DD

(Typical) to the first Access[18]

1

1

ms

POWER

Clock

tCYC

Clock Cycle Time

7.5

10

ns

tCH

Clock HIGH

2.5

3.0

ns

tCL

Clock LOW

2.5

3.0

ns

Output Times

tCDV

Data Output Valid After CLK Rise

6.5

8.5

ns

tDOH

Data Output Hold After CLK Rise

2.5

2.5

ns

tCLZ

Clock to Low-Z[19, 20, 21]

2.5

2.5

ns

tCHZ

Clock to High-Z[19, 20, 21]

3.8

0

4.5

ns

tOEV

LOW to Output Valid

3.0

3.8

ns

OE

tOELZ

LOW to Output Low-Z[19, 20, 21]

0

0

ns

OE

tOEHZ

HIGH to Output High-Z[19, 20, 21]

3.0

4.0

ns

OE

Setup Times

tAS

Address Setup Before CLK Rise

1.5

1.5

ns

tADS

Setup Before CLK Rise

1.5

1.5

ns

ADSP,

ADSC

tADVS

Setup Before CLK Rise

1.5

1.5

ns

ADV

tWES

X Setup Before CLK Rise

1.5

1.5

ns

GW,

BWE,

BW

tDS

Data Input Setup Before CLK Rise

1.5

1.5

ns

tCES

Chip Enable Setup

1.5

1.5

ns

Hold Times

tAH

Address Hold After CLK Rise

0.5

0.5

ns

tADH

Hold After CLK Rise

0.5

0.5

ns

ADSP,

ADSC

tWEH

X Hold After CLK Rise

0.5

0.5

ns

GW,

BWE,

BW

tADVH

Hold After CLK Rise

0.5

0.5

ns

ADV

tDH

Data Input Hold After CLK Rise

0.5

0.5

ns

tCEH

Chip Enable Hold After CLK Rise

0.5

0.5

ns

Notes

18.This part has a voltage regulator internally; tPOWER is the time that the power must be supplied above VDD(minimum) initially, before a read or write operation can be initiated.

19.tCHZ, tCLZ,tOELZ, and tOEHZ are specified with AC test conditions shown in part (b) of “AC Test Loads and Waveforms” on page 20. Transition is measured ± 200 mV from steady-state voltage.

20.At any given voltage and temperature, tOEHZ is less than tOELZ and tCHZ is less than tCLZ to eliminate bus contention between SRAMs when sharing the same data bus. These specifications do not imply a bus contention condition, but reflect parameters guaranteed over worst case user conditions. Device is designed to achieve High-Z prior to Low-Z under the same system conditions.

21.This parameter is sampled and not 100% tested.

22.Timing reference level is 1.5V when VDDQ = 3.3V and is 1.25V when VDDQ = 2.5V.

23.Test conditions shown in (a) of AC Test Loads unless otherwise noted.

Document #: 38-05357 Rev. *G Page 21 of 31

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