Datasheet

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TSC2301

SLAS371D – SEPTEMBER 2002 – REVISED AUGUST 2004

Bits [5:3] — PRE[2:0]

Precharge time selection bits. These bits set the amount of time allowed for precharging any pin capacitance on

the touch screen prior to sensing if the screen is being touched.

Table 18. Precharge Times

PRE[2:0]

PRE2 PRE1 PRE0 Time

0 0 0 20 µs (default)

0 0 1 84 µs

0 1 0 276 µs

0 1 1 340 µs

1 0 0 1.044 ms

1 0 1 1.108 ms

1 1 0 1.300 ms

1 1 1 1.364 ms

Bits [2:0] — SNS[2:0]

Sense time selection bits. These bits set the amount of time the TSC2301 waits to sense a screen touch

between coordinate axis conversions in self-controlled mode.

Table 19. Sense Times

SNS[2:0]

SNS2 SNS1 SNS0 Time

0 0 0 32 µs (default)

0 0 1 96 µs

0 1 0 544 µs

0 1 1 608 µs

1 0 0 2.080 ms

1 0 1 2.144 ms

1 1 0 2.592 ms

1 1 1 2.656 ms