LH540215 datasheet(31/48 Pages) SHARP

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540215-14

WCLK

tENS (1)

WEN

512 - p words

in FIFO (2)

511 - p words

in FIFO (3)

REN

RCLK

PAF

NOTES:

1. PAF offset = p. Number of data words written into FIFO already = 511 - p for the LH540215 and 1023 - p for the LH540225.

2. 512 - p words in FIFO for LH540215. 1024 - p words in FIFO for LH540225.

3. 511 - p words in FIFO for LH540215. 1023 - p words in FIFO for LH540225.

tENS

tPAF

tENH

tCLKH

tCLKL

Figure 16. Programmable Almost-Full-Flag Timing,

IDT-Compatible Operating Mode

TIMING DIAGRAMS (cont’d)

512 x 18/1024 x 18 Synchronous FIFO

LH540215/25

31

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