CAP1208 datasheet(30/67 Pages) MICROCHIP

30 / 67 page

8-Channel Capacitive Touch Sensor

Datasheet

DS00001570B-page 30

 2014 Microchip Technology Inc.

During power-on reset (POR), the default values are stored in the registers. A POR is initiated when

power is first applied to the part and the voltage on the VDD supply surpasses the POR level as

specified in the electrical characteristics.

When a bit is “set”, this means it’s at a logic ‘1’. When a bit is “cleared”, this means it’s at a logic ‘0’.

5.1

Main Control Register

The Main Control register controls the primary power state of the device (see Section 4.1, "Power

States").

Bit 5 - STBY - Enables Standby.



‘0’ (default) - The device is not in the Standby state.



‘1’ - The device is in the Standby state. Capacitive touch sensor input scanning is limited to the

sensor inputs set in the Standby Channel register (see Section 5.21, "Standby Channel Register").

The status registers will not be cleared until read. Sensor inputs that are no longer sampled will

flag a release and then remain in a non-touched state.

Bit 4 - DSLEEP - Enables Deep Sleep.



‘0’ (default) - The device is not in the Deep Sleep state.



‘1’ - The device is in the Deep Sleep state. All sensor input scanning is disabled. The status

registers are automatically cleared and the INT bit is cleared. When this bit is set, the STBY bit

has no effect.

B7h

Sensor Input 7

Calibration

Stores the upper 8-bit calibration

value for CS7

00h

Page 56

B8h

Sensor Input 8

Calibration

Stores the upper 8-bit calibration

value for CS8

00h

Page 56

B9h

Sensor Input

Calibration LSB 1

Stores the 2 LSBs of the calibration

value for CS1 - CS4

00h

Page 56

BAh

Sensor Input

Calibration LSB 2

Stores the 2 LSBs of the calibration

value for CS5 - CS8

00h

Page 56

ID Registers

FDh

Product ID

Stores a fixed value that identifies

the CAP1208

6Bh

Page 57

FEh

Manufacturer ID

Stores a fixed value that identifies

MCHP

5Dh

Page 57

FFh

Revision

Stores a fixed value that represents

the revision number

00h

Page 57

Table 5.2 Main Control Register

ADDR

R/W

DEFAULT

00h

R/W

Main Control

STBY

DSLEEP

INT

00h

Table 5.1 Register Set in Hexadecimal Order (continued)

ADDRESS

R/W

FUNCTION

DEFAULT

VALUE

PAGE

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