CY7C027V/027VN/027AV/028V

CY7C037V/037AV/038V

Switching Waveforms(continued)

Figure 15. Interrupt Timing Diagrams

Left Side Sets INTR :

tWC

ADDRESSL

 

 

WRITE 7FFF (FFFF for CY7C028V/38V)

 

 

 

 

 

 

 

 

 

 

 

 

 

tHA[35]

 

 

 

 

 

 

 

CE L

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R/WL

INTR

 

tINS [36]

Right Side Clears INTR:

tRC

ADDRESSR

READ 7FFF

(FFFF for CY7C028V/38V)

CER

 

 

tINR[36]

R/WR

 

OE R

 

INTR

 

Right Side Sets INTL:

ADDRESSR

CE R

R/WR

INTL

tWC

WRITE 7FFE (FFFE for CY7C028V/38V)

tHA[35]

tINS[36]

Left Side Clears INT L:

tRC

 

ADDRESSR

READ 7FFE

(FFFF for CY7C028V/38V)

CE L

 

 

tINR[36]

R/W L

 

OE L

 

INT L

 

Notes

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

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

Document #: 38-06078 Rev. *B

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Cypress CY7C037AV, CY7C037V, CY7C027V, CY7C028V manual Right Side Clears INT R, Right Side Sets Intl, Left Side Clears INT L