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PixArt Imaging Inc.

PCT1339 Product Datasheet

Multi-Touch Capacitive Touch Controller

PixArt Imaging Inc. http://www.pixart.com

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Version 1.0 |11 Apr 2016

AC Timing Specification

3.5.1

Power on Sequence Timing Requirement with Internal Regulator

Parameter

Symbol

Min

Typ

Max

Unit

VDDIO to V_IN Delay

T1 (*1)

10

µs

V_IN stable to Reset release

T2

1

ms

Reset release to register access

T3

5

ms

charge-pump enable to VDDAIO stable

T4

2

ms

Minimum reset duration

T5

10

µs

Register access delay after resume

T3

5

ms

Notes *1: We suggest VDDIO to be applied after V_IN. If VDDIO need to be applied before V_IN, the time gap should be less than

10us. That means, T1 could be “negative”.

VDDIO

V_IN

VDDD

VDDA

VDDCP

NRST

Register

VDDAIO

T4

T1

T2

T3

T5

T3

Shutdown/Resume

Register

W7AAA

(shutdown)

W7ADD

(Resume)

T3

Figure 10. Power-up Sequence with Internal Regulator