Cypress CY7C1344H manual Switching Characteristics Over the Operating Range 10

Page 9

CY7C1344H

Switching Characteristics Over the Operating Range [10, 11]

 

 

 

 

 

 

 

 

 

 

 

 

 

133 MHz

100 MHz

 

Parameter

 

 

 

 

 

 

 

 

 

 

 

Description

 

 

 

 

Unit

 

 

 

 

 

 

 

 

 

 

 

Min.

Max.

Min.

Max.

 

 

 

 

 

 

 

 

t

 

V (Typical) to the First Access[12]

1

 

1

 

ms

POWER

 

DD

 

 

 

 

 

Clock

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tCYC

 

Clock Cycle Time

7.5

 

10

 

ns

tCH

 

Clock HIGH

2.5

 

4.0

 

ns

tCL

 

Clock LOW

2.5

 

4.0

 

ns

Output Times

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tCDV

 

Data Output Valid after CLK Rise

 

6.5

 

8.0

ns

tDOH

 

Data Output Hold after CLK Rise

2.0

 

2.0

 

ns

tCLZ

 

Clock to Low-Z[13, 14, 15]

0

 

0

 

ns

tCHZ

 

Clock to High-Z[13, 14, 15]

 

3.5

 

3.5

ns

tOEV

 

 

 

LOW to Output Valid

 

3.5

 

3.5

ns

OE

 

 

tOELZ

 

 

 

LOW to Output Low-Z[13, 14, 15]

0

 

0

 

ns

OE

 

 

tOEHZ

 

 

 

HIGH to Output High-Z[13, 14, 15]

 

3.5

 

3.5

ns

OE

 

 

Set-up Times

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tAS

 

Address Set-up before CLK Rise

1.5

 

2.0

 

ns

tADS

 

 

 

 

 

 

 

 

 

 

Set-up before CLK Rise

1.5

 

2.0

 

ns

ADSP,

ADSC

 

 

tADVS

 

 

 

 

 

Set-up before CLK Rise

1.5

 

2.0

 

ns

ADV

 

 

tWES

 

 

 

 

 

 

 

 

 

 

[A:D] Set-up before CLK Rise

1.5

 

2.0

 

ns

GW,

BWE,

BW

 

 

tDS

 

Data Input Set-up before CLK Rise

1.5

 

2.0

 

ns

tCES

 

Chip Enable Set-up

1.5

 

2.0

 

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

 

 

 

 

 

 

 

 

 

 

[A:D] 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:

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

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

12.This part has a voltage regulator internally; tPOWER is the time that the power needs to be supplied above VDD(minimum) initially before a Read or Write operation can be initiated.

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

14.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.

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

Document #: 001-00211 Rev. *B

Page 9 of 15

[+] Feedback

Image 9
Contents Features Logic Block Diagram Functional Description1Cypress Semiconductor Corporation Selection Guide Pin Configurations15CY7C1344H 133 MHz 100 MHz UnitPin Definitions Interleaved Burst Address Table Mode = Floating or VDD Linear Burst Address Table Mode = GNDFunctional Overview Parameter Description Test Conditions Min Max Unit ZZ Mode Electrical CharacteristicsAddress Cycle Description Used Adsp Adsc ADV Write CLKTruth Table for Read/Write2 FunctionBWE BW D BW C BW B BW a Operating Range Maximum RatingsAmbient Range Description Test Conditions Min Max UnitCapacitance9 Thermal Resistance9AC Test Loads and Waveforms Switching Characteristics Over the Operating Range 10 Read Cycle Timing16 Timing DiagramsCLK AdscWrite Cycle Timing16 Adsp Adsc Read/Write Timing16, 18Address Burst ReadDON’T Care ZZ Mode Timing 20Package Diagram Ordering InformationPin Tqfp 14 x 20 x 1.4 mm Document History Issue Date Orig. Description of ChangeREV ECN no PCI