11/23

STLC5445

Figure 3. Microprocessor WRITE timing

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

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

Read Data

DATA

RD

CS

ALE

D94TL108A

Write Data

DATA

WR

CS

ALE

D94TL109A

INT

(Note 3)