STLC5444FN Просмотр технического описания (PDF) - STMicroelectronics

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STLC5444FN

QUAD FEEDER POWER SUPPLY

STMicroelectronics 

STLC5444

Figure 1a: Microprocessor Read Timing non multiplexed mode.

ALE

tAHRH

AO

CS

RD

DATA

tCLRL (Note 1)

tASRL

tADDA

tRLRH

tRLDA

tRHCH (Note 2)

tRHDZ

Read Data

tRHRL

D97TL301A

Notes:

1 - If tCLRL is negative, tRHRL, tRLRH, tAZRL, and tRLDA are measured from CS rather than RD.

2 - If tRHCH is negative, tRHRL, tRLRH and tRHDZ are measured from CS rather than RD.

When a read from the LER immediately follows a write to the LER a minimum of 1 µs is required between these operations.

Figure 2a: Microprocessor Write Timing non multiplexed mode.

ALE

tASWL

tAHWH

AO

tWHCH (Note 2)

CS

WR

DATA

INT

tCLWL (Note 1)

tWLWH

tDAWH

tWHDZ

Write Data

(Note 3)

tWHWL

D97TL302A

Notes:

1 - If tCLWL is negative tWHWL and tWLWH are measured from CS rather than WR.

2 - If tWHCH is negative, tWHWL, tWLWH, tDAWH and tWHDZ are measured from CS rather than WR.

The propagation delay from the writing of the T/I bit to the effect on the INT pin is approximately 1µs for both mask and enable operations.

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