LM12L458 datasheet(16/36 Pages) NSC

Part #	LM12L458

Description	12-Bit Sign Data Acquisition System with Self-Calibration

PDF	36 Pages

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Manufacturer	NSC [National Semiconductor (TI)]

Direct Link	http://www.national.com

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16 / 36 page

Timing Diagrams V

A+ = VD+ = +3.3V, tR = tF = 3 ns, CL = 100 pF for the INT, DMARQ, D0– D15

outputs. (Continued)

8: RD pulse width

16: RD low to data bus out of TRI-STATE

9: RD high to next RD or WR low

17: RD high to TRI-STATE

11: WR pulse width

18: RD low to data valid (access time)

13: WR high to next WR or RD low

19: Address invalid from RD or WR high (hold time)

14: Data valid to WR high set-up time

20: CS low or address valid to RD low

15: Data valid to WR high hold time

21: CS low or address valid to WR low

V

A+ = VD+ = +3.3V, tR = tF = 3 ns, CL = 100 pF for the INT, DMARQ, D0– D15 outputs.

22: INT high from RD low

23: DMARQ low from RD low

DS011711-20

FIGURE 11. Non-Multiplexed Data Bus (ALE = 1)

DS011711-21

FIGURE 12. Interrupt and DMARQ

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