Cypress CY7C024BV manual Right Side Clears INT R, Right Side Sets Intl, Left Side Clears INT L

Page 16

CY7C024AV/024BV/025AV/026AV

CY7C0241AV/0251AV/036AV

Switching Waveforms (continued)

Figure 16. Interrupt Timing Diagram

Left Side Sets INTR :

tWC

 

ADDRESSL

WRITE 1FFF (OR 1/3FFF)

CE L

tHA[49]

 

R/WL

 

INTR

 

 

tINS [50]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Right Side Clears INTR :

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

t

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ADDRESSR

 

 

 

 

 

READ 7FFF

 

 

 

 

 

 

 

 

(OR 1/3FFF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CER

tINR[50]

R/WR

OE R

INTR

Right Side Sets INTL:

ADDRESSR

CE R

R/WR

INTL

tWC

WRITE 1FFE (OR 1/3FFE)

tHA[49]

tINS[50]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Left Side Clears INT L:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

tRC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ADDRESSR

READ 7FFE

 

 

 

 

 

 

 

 

OR 1/3FFE)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CE L

tINR[50]

R/W L

OE L

INT L

Notes

49.tHA depends on which enable pin (CEL or R/WL) is deasserted first.

50.tINS or tINR depends on which enable pin (CEL or R/WL) is asserted last.

Document #: 38-06052 Rev. *J

Page 16 of 19

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Contents Logic Block Diagram FeaturesCypress Semiconductor Corporation 198 Champion Court Pin Configurations Pin Tqfp Top ViewCY7C0241AV 4K × Selection Guide Maximum Access Time Typical Operating CurrentParameter CY7C024AV/024BV/025AV/026AV Unit Architecture Pin DefinitionsFunctional Description Master/Slave BusySemaphore Operation Non-Contending Read/Write Inputs Outputs Operation IO 0 -IOInterrupt Operation Example assumes = High Left Port Right Port FunctionElectrical Characteristics Maximum RatingsOperating Range CapacitanceSwitching Characteristics ALL InputpulsesCY7C024AV/024BV/025AV/026AV Parameter Description Read CycleData Retention Mode Timing Parameter DescriptionBusy Timing26 Parameter Test Conditions Max UnitSwitching Waveforms Read Cycle No Either Port Address Access29, 30Write Cycle No R/W Controlled Timing 34, 35, 36 CY7C024AV/024BV/025AV/026AV Timing Diagram of Read with Busy M/S=HIGH47 CER ValidFirst Right Address Valid FirstRight Side Sets Intl Right Side Clears INT RLeft Side Clears INT L Ordering Information Package Diagram 16K x18 3.3V Asynchronous Dual-Port SramWorldwide Sales and Design Support Products PSoC Solutions Sales, Solutions, and Legal InformationDocument History