LH5496-20 データシートの表示（PDF） - Sharp Electronics

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LH5496-20

CMOS 512 × 9 FIFO

Sharp Electronics 

CMOS 512 × 9 FIFO

LH5496/96H

AC ELECTRICAL CHARACTERISTICS 1 (Over Operating Range)

SYMBOL

PARAMETER

tA = 15 ns 2 tA = 20 ns tA = 25 ns tA = 35 ns tA = 50 ns tA = 65 ns tA = 80 ns

MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX MIN MAX UNIT

READ CYCLE TIMING

tRC

tA

tRR

tRPW

tRLZ

tWLZ

Read Cycle Time

25 – 30 – 35 – 45 – 65 – 80 – 100 – ns

Access Time

– 15 – 20 – 25 – 35 – 50 – 65 – 80 ns

Read Recover Time

10 – 10 – 10 – 10 – 15 – 15 – 15 – ns

Read Pulse Width 3

15 – 20 – 25 – 35 – 50 – 65 – 80 – ns

Data Bus Active from Read LOW 4 5 – 5 – 5 – 5 – 5 – 5 – 10 – ns

Data Bus Active from Write

HIGH 4,5

10 – 10 – 10 – 10 – 10 – 10 – 20 – ns

tDV

Data Valid from Read Pulse HIGH 5 – 5 – 5 – 5 – 5 – 5 – 5 – ns

tRHZ

Data Bus High-Z from Read

HIGH 4

– 15 – 15 – 15 – 15 – 20 – 30 – 30 ns

WRITE CYCLE TIMING

tWC

tWPW

Write Cycle Time

Write Pulse Width 3

25 – 30 – 35 – 45 – 65 – 80 – 100 – ns

15 – 20 – 25 – 35 – 50 – 65 – 80 – ns

tWR

Write Recovery Time

10 – 10 – 10 – 10 – 15 – 15 – 15 – ns

tDS

Data Setup Time

tDH

Data Hold Time

10 – 10 – 10 – 15 – 20 – 20 – 20 – ns

0 – 0 – 0 – 0 – 0 – 5 – 5 – ns

RESET TIMING

tRSC

Reset Cycle Time

tRS

Reset Pulse Width 3

25 – 30 – 35 – 45 – 65 – 80 – 100 – ns

15 – 20 – 25 – 35 – 50 – 65 – 80 – ns

tRSR

tRRSS

tWRSS

Reset Recovery Time

Read HIGH to RS HIGH

Write HIGH to RS HIGH

10 – 10 – 10 – 10 – 15 – 15 – 15 – ns

15 – 20 – 25 – 35 – 50 – 65 – 80 – ns

15 – 20 – 25 – 35 – 50 – 65 – 80 – ns

RETRANSMIT TIMING

tRTC

Retransmit Cycle Time

tRT

Retransmit Pulse Width 3

tRTR

Retransmit Recovery Time

25 – 30 – 35 – 45 – 65 – 80 – 100 – ns

15 – 20 – 25 – 35 – 50 – 65 – 80 – ns

10 – 10 – 10 – 10 – 15 – 15 – 15 – ns

FLAG TIMING

tEFL

tHFH,FFH

Reset LOW to Empty Flag LOW

Reset LOW to Half-Full and Full

Flags HIGH

– 25 – 30 – 35 – 45 – 65 – 80 – 100 ns

– 25 – 30 – 35 – 45 – 65 – 80 – 100 ns

tREF

tRFF

tWEF

tWFF

tWHF

Read LOW to Empty Flag LOW

– 20 – 25 – 25 – 35 – 45 – 60 – 60 ns

Read HIGH to Full Flag HIGH

– 20 – 25 – 25 – 35 – 45 – 60 – 60 ns

Write HIGH to Empty Flag HIGH – 20 – 25 – 25 – 35 – 45 – 60 – 60 ns

Write LOW to Full Flag LOW

– 20 – 25 – 25 – 35 – 45 – 60 – 60 ns

Write LOW to Half-Full Flag LOW – 25 – 30 – 35 – 45 – 65 – 80 – 100 ns

tRHF

Read HIGH to Half-Full Flag HIGH – 25 – 30 – 35 – 45 – 65 – 80 – 100 ns

EXPANSION TIMING

tXOL

Expansion Out LOW

tXOH

Expansion Out HIGH

– 18 – 20 – 25 – 35 – 50 – 65 – 80 ns

– 18 – 20 – 25 – 35 – 50 – 65 – 80 ns

tXI

Expansion In Pulse Width

15 – 20 – 25 – 35 – 50 – 65 – 80 – ns

tXIR

Expansion In Recovery Time

10 – 10 – 10 – 10 – 10 – 10 – 10 – ns

tXIS

Expansion in Setup Time

7 – 10 – 10 – 15 – 15 – 15 – 15 – ns

NOTES:

1. LH5496 only.

2. All timing measurements performed at ‘AC Test Condition’ levels.

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