CAP1114 datasheet(101/102 Pages) MICROCHIP

101 / 102 page

Multiple Channel Capacitive Touch Sensor and LED Driver

Datasheet

SMSC CAP1114

101

Revision 1.1 (02-04-11)

DATASHEET

Chapter 8 Datasheet Revision History

Table 8.1 Customer Revision History

REVISION LEVEL & DATE

SECTION/FIGURE/ENTRY

CORRECTION

Rev. 1.1 (02-04-11)

Cover

RightTouch logo added.

Features

Added: “Proximity detection” under “Capacitive

Touch Inputs”

Section 6.35, "Proximity

Control Register"

Modified CS1_PROX and PROX_SUM

descriptions

Chapter 1, Delta from

CAP1014 to CAP1114

Added delta chapter

Table 3.2, "Electrical

Specifications"

Completed electrical specification values.

Changed Time to Communications (tCOMM) spec.

from 15ms max to 15ms typ and 20ms max.

Added drive frequency spec of 2kHz.

Figure 5.1, "System

Diagram for CAP1114"

Added resistors to LED lines.

Section 5.1, "Power States"

Description for DSLEEP recommended disabling

LEDs. Except for LED11, LEDs are driven to non-

actuated state with no PWM operations. Users can

decide whether to disable or not.

Section 6.1, "Main Status

Control Register"

Description for DSLEEP set to 1 said LEDs (except

LED11) are disabled. Instead, they are driven to

their programmed non-actuated state and no PWM

operations will be done.

Section 6.33, "Configuration

2 Register"

Renamed INV_LINK_POL to INV_LINK_TRAN. It

pertains to Linked LED Transition Controls.

Section 6.35, "Proximity

Control Register"

Added.

Section 6.43, "LED Output

Control Registers"

When LEDs are not linked to capacitive touch

sensor channels, LED behaviors can still be used.

A bit setting of 1 is activated.

Section 6.44, "LED Polarity

Registers"

Split second application note into three notes to

separate inverted versus non-inverted behavior

and raise the importance of the assumption of how

LEDs are connected. Added reference to system

diagram. Clarified description of bit settings.

LEDx_POL = 0 is inverted system, and LEDx_POL

= 1 is non-inverted system.

Table 6.64, "LED Polarity

Behavior"

Updated table to reflect actual behavior.

Section 6.45, "Linked LED

Transition Control

Registers"

Updated. These controls work with the

INV_LINK_TRAN bit (not polarity).

Section 6.46, "LED Mirror

Control"

Updated to clarify.

Section 6.48, "LED Behavior

Registers"

If an LED is not linked and breathing, it must be

unactuated for behavior changes to take effect.

Clarified explanation of how triggers start and stop.

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