Cypress CY7C1548V18, CY7C1546V18 TAP AC Switching Characteristics, TAP Timing and Test Conditions

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CY7C1546V18, CY7C1557V18

CY7C1548V18, CY7C1550V18

TAP AC Switching Characteristics

Over the Operating Range [12, 14]

Parameter

Description

Min

Max

Unit

tTCYC

TCK Clock Cycle Time

50

 

ns

tTF

TCK Clock Frequency

 

20

MHz

tTH

TCK Clock HIGH

20

 

ns

tTL

TCK Clock LOW

20

 

ns

Setup Times

 

 

 

 

 

 

 

 

 

tTMSS

TMS Setup to TCK Clock Rise

5

 

ns

tTDIS

TDI Setup to TCK Clock Rise

5

 

ns

tCS

Capture Setup to TCK Rise

5

 

ns

Hold Times

 

 

 

 

tTMSH

TMS Hold after TCK Clock Rise

5

 

ns

tTDIH

TDI Hold after Clock Rise

5

 

ns

tCH

Capture Hold after Clock Rise

5

 

ns

Output Times

 

 

 

 

 

 

 

 

 

tTDOV

TCK Clock LOW to TDO Valid

 

10

ns

tTDOX

TCK Clock LOW to TDO Invalid

0

 

ns

TAP Timing and Test Conditions

Figure 2. TAP Timing and Test Conditions [12]

 

 

 

0.9V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50Ω

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TDO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0V

Z0

= 50Ω

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CL = 20 pF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(a) GND

 

 

 

tTH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Test Clock

TCK

tTMSS

ALL INPUT PULSES

1.8V

0.9V

tTL

tTMSH tTCYC

Test Mode Select

TMS

Test Data In

TDI

Test Data Out

TDO

Note

tTDIS

tTDIH

 

tTDOV

 

 

 

 

t

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TDOX

14. tCS and tCH refer to the setup and hold time requirements of latching data from the boundary scan register.

Document Number: 001-06550 Rev. *E

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Contents Features ConfigurationsFunctional Description Selection GuideLogic Block Diagram CY7C1546V18 Logic Block Diagram CY7C1557V18Logic Block Diagram CY7C1548V18 Logic Block Diagram CY7C1550V18Pin Configuration Ball Fbga 15 x 17 x 1.4 mm PinoutCY7C1546V18 8M x CY7C1557V18 8M xCY7C1548V18 4M x CY7C1550V18 2M xPin Definitions Pin Name Pin DescriptionBWS BWS2, BWS3 Synchronous Read or Write Input. WhenPower Supply Inputs to the Core of the Device Power Supply Inputs for the Outputs of the DeviceTDO for Jtag TCK Pin for JtagFunctional Overview Valid Data Indicator Qvld Application ExampleEcho Clocks SRAM#1 SRAM#2Write Cycle Descriptions OperationBWS0 BWS1 CommentsBWS0 BWS0 BWS1 BWS2 BWS3Ieee 1149.1 Serial Boundary Scan Jtag Idcode TAP Controller State Diagram State diagram for the TAP controller followsTAP Controller Block Diagram TAP Electrical CharacteristicsTDI TCKTAP AC Switching Characteristics TAP Timing and Test ConditionsIdentification Register Definitions Scan Register SizesInstruction Codes Register Name Bit SizeBit Number Bump ID Power Up Sequence in DDR-II+ Sram Power Up WaveformsPower Up Sequence DLL ConstraintsElectrical Characteristics DC Electrical CharacteristicsMaximum Ratings Range AmbientAC Electrical Characteristics CapacitanceThermal Resistance Parameter Description Test Conditions Max UnitAC Test Loads and Waveforms AC Test Loads and WaveformsSwitching Characteristics Cypress Consortium Description 375 MHz 333 MHz 300 MHz UnitParameter Min Max DLL TimingSwitching Waveforms Read/Write/Deselect Sequence 29, 30, 31NOP Read NOP WriteOrdering Information 300 Package Diagram Ball Fbga 15 x 17 x 1.4 mmDocument History ECN No Issue Orig. Description of Change DateREV