STLC5445 Просмотр технического описания (PDF) - STMicroelectronics

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Компоненты Описание

производитель

STLC5445

QUAD LINE FEED CONTROLLER

STMicroelectronics 

Figure 3. Microprocessor WRITE timing

STLC5445

ALE

AO

CS

RD

DATA

tAHAL

tADAL

tADAZ

tCLRL (Note 1)

tADDA

tAZRL

tRLRH

tRLDA

tRHCH (Note 2)

tRHDZ

Read Data

tRHRL

D94TL108A

Notes: 1. If tCLWL is negative tWLWH is measured from CS_ rather than fromWR_.

2. If tWHCH is negative, tWHWL, tWLWH, tDAWH and tWHDZ are measured from CS_ rather than fromWR_.

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

Figure 4. Microprocessor READ timing

ALE

AO

CS

tAHAL

tADAL

tADAZ

tWHCH (Note 2)

WR

DATA

INT

tCLWL (Note 1)

tAZWL

tWLWH

tDAWH

tWHDZ

Write Data

(Note 3)

tWHWL

D94TL109A

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 1ms is required between these operations

11/23

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