CY7C474 データシートの表示（PDF） - Cypress Semiconductor

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CY7C474

8K x 9 FIFO, 16K x 9 FIFO 32K x 9 FIFO with Programmable Flags

Cypress Semiconductor 

Switching Waveforms (Continued)

E/F Flag (Last Write to First Read Full Flag)

FULL–1

W

FULL

R

tEFD

E/F

HF LOW

E/F Flag (Last Read to First Write Empty Flag)

EMPTY+1

R

EMPTY

W

tEFD

E/F

HF

HIGH

Half Full Flag

HALF–FULL

W

R

tHFD

HF

HALF–FULL +1

6

CY7C470

CY7C472

CY7C474

FULL–1

tEFD

7C470–10

EMPTY+1

tEFD

7C470–11

HALF–FULL

tHFD

7C470–12

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