LH543621 View Datasheet(PDF) - Sharp Electronics

Part Name

Description

MFG CO.

LH543621

512 × 36 × 2 / 1024 × 36 × 2 Synchronous Bidirectional FIFO

Sharp Electronics 

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512 x 36 x 2/1024 x 36 x 2 BiFIFOs

TIMING DIAGRAMS (cont’d)

CKB

tRWS

R/WB

t ES

ENB

tRQS

REQB

tA

D0B - D8B

BITS

0-8

BITS

9-17

BITS

18-26

BITS

27-35

BITS

0-8

D9B - D17B

WORD # n

BITS

9-17

BITS

18-26

BITS

27-35

WORD # n+1

BITS

0-8

BITS

9-17

D18B - D26B

WORD # n

BITS

18-26

BITS

27-35

BITS

0-8

WORD # n+1

BITS

9-17

BITS

18-26

D27B - D35B

WORD # n

BITS

27-35

BITS

0-8

BITS

9-17

WORD # n+1

BITS

18-26

BITS

27-35

WORD # n

NOTES:

1. A0B is held HIGH for FIFO access.

2. OEB is held LOW.

3. WS0 and WS1 both are held LOW for single-byte access.

4. Data-access time tA, after the rising edge of CKB, shown for the

first read cycle, applies similarly for all subsequent read cycles.

WORD # n+1

Figure 37. Port B Single-Byte FIFO #1 Read Access for

36-to-9 Funneling

LH543611/21

543611-39

49

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