LH540203U-25 View Datasheet(PDF) - Sharp Electronics

Part Name

Description

MFG CO.

LH540203U-25

CMOS 2048 × 9 Asynchronous FIFO

Sharp Electronics 

CMOS 2048 × 9 Asynchronous FIFO

TIMING DIAGRAMS (cont’d)

tRT

RT

tRTR

R,W

NOTES:

1. tRTC = tRT + tRTR.

2. FF, HF, and EF may change state during retransmit; but they will

become valid by tRTC.

Figure 19. Retransmit Timing

LH540203

540203-13

WRITE TO LAST

AVAILABLE

LOCATION

W

R

t XOL

t XOH

READ FROM

LAST VALID

LOCATION

t XOL

t XOH

XO

Figure 20. Expansion-Out Timing

540203-15

t XI

t XIR

XI

t XIS

WRITE TO FIRST

AVAILABLE

W

LOCATION

R

t XIS

READ FROM FIRST

VALID

LOCATION

Figure 21. Expansion-In Timing

540203-16

15

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