THS1009

SLAS287A – AUGUST 2000 – REVISED DECEMBER 2002

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25

Write Timing (using R/W, CS0-controlled)

Figure 32 shows the write-timing behavior when the WR(R/W) input is programmed as a combined read-write input

R/W. The RD input has to be tied to high-level in this configuration. This timing is called CS0-controlled because CS0

is the last external signal of CS0, CS1, and R/W which becomes valid. The write into the THS1009 can be performed

irrespective of the conversion clock signal CONV_CLK.

D(0–11)

10%

10%

10%

10%

90%

90%

90%

tw(CS)

tsu(R/W)

th(R/W)

tsu

th

RD

R/W

CS1

CS0

Figure 32. Write Timing Diagram Using R/W (CS0-controlled)

Write Timing Parameter (CS0-controlled)

PARAMETER

MIN

TYP

MAX

UNIT

tsu(R/W)

Setup time, R/W stable to last CS valid

0

ns

tsu

Setup time, data valid to first CS invalid

5

ns

th

Hold time, first CS invalid to data invalid

2

ns

th(R/W)

Hold time, first CS invalid to R/W change

5

ns

tw(CS)

Pulse duration, CS active

10

ns