lm12l458civf National Semiconductor Corporation, lm12l458civf Datasheet - Page 16

• Manufacturer Part Number: lm12l458civf
• Description: 12-bit Sign Data Acquisition System With Self-calibration
• Manufacturer: National Semiconductor Corporation

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Timing Diagrams
outputs. (Continued)
V
DMARQ, D0–D15 outputs.
22: INT high from RD low
A
+ = V
11: WR pulse width
13: WR high to next WR or RD low
14: Data valid to WR high set-up time
15: Data valid to WR high hold time
8: RD pulse width
9: RD high to next RD or WR low
D
+ = +3.3V, t
R
= t
F
= 3 ns, C
V
A
+ = V
L
D
FIGURE 11. Non-Multiplexed Data Bus (ALE = 1)
= 100 pF for the INT,
+ = +3.3V, t
FIGURE 12. Interrupt and DMARQ
R
= t
F
= 3 ns, C
16
16: RD low to data bus out of TRI-STATE
17: RD high to TRI-STATE
18: RD low to data valid (access time)
19: Address invalid from RD or WR high (hold time)
20: CS low or address valid to RD low
21: CS low or address valid to WR low
L
23: DMARQ low from RD low
= 100 pF for the INT, DMARQ, D0–D15
01171121
01171120