6

COMMERCIALTEMPERATURERANGE

IDT7280/7281/7282/7283/7284/7285 5V ASYNCHRONOUS FIFO

DUAL 256 x 9, 512 x 9, 1,024 x 9, 2,048 x 9, 4,096 x 9 and 8,192 x 9

JUNE 29, 2012

Figure 5. Empty Flag From Last Read to First Write

Figure 8. Minimum Timing for a Full Flag Coincident Write Pulse

Figure 7. Minimum Timing for an Empty Flag Coincident Read Pulse

Figure 6. Retransmit

LAST READ

R

IGNORED

READ

FIRST WRITE

ADDITIONAL

WRITES

FIRST

READ

W

EF

3208 drw 07

VALID

VALID

DATA OUT

REF

t

RT

W,R

HF, EF, FF

FLAG VALID

3208 drw 08

RTF

t

EF

W

R

3208 drw 09

FF

R

W

3208 drw 10