24

AT42QT1060 [DATASHEET]

9505H–AT42–04/2015

5.23

Address 52 – 63: Reference Data

REFERENCE DATA: addresses 52 – 63 allow reference data to be read for each key, starting with key 0. There are

two bytes of data for each key. These are the key’s 16-bit reference data which is accessed as two 8-bit bytes, stored

LSB first. These addresses are read-only.

5.24

Mask Precedence

Table 5-24 gives the order of priority for the settings in the mask inputs/outputs. The settings in the left-most column

have the highest priority, those in the second-left have the next priority, and so on. If two or more settings are

incompatible then the setting in the left-hand column overrides the other. The right-most column, I/O Function,

specifies the expected result.

Note:

X = don’t care (can be a 1 or a 0)

Table 5-23. Reference Data

Address

b7

b6

b5

b4

b3

b2

b1

b0

52

LSB OF REFERENCE DATA FOR KEY 0

53

MSB OF REFERENCE DATA FOR KEY 0

54 – 63

LSB/MSB OF REFERENCE DATA FOR KEYS 1 – 5

Table 5-24. Input/Output Mask Precedence

I/O Mask

(bit n)

Detection

Mask (bit n)

PWM Mask

(bit n)

Active Level

Mask (bit n)

User Reg

(bit n)

QTouch Key

(channel n)

I/O Function

(I/O n)

0

X

X

X

X

X

Digital Input

1

0

0

0

0

X

Output - Vdd

1

0

0

0

1

X

Output - 0 V

1

0

0

1

0

X

Output - 0 V

1

0

0

1

1

X

Output - Vdd

1

0

1

0

0

X

Output - Vdd

1

0

1

0

1

X

PWM Output

1

0

1

1

0

X

Output - 0 V

1

0

1

1

1

X

PWM Output

1

1

0

0

X

Untouched

Output - Vdd

1

1

0

0

X

Touched

Output - 0 V

1

1

0

1

X

Untouched

Output - 0 V

1

1

0

1

X

Touched

Output - Vdd

1

1

1

0

X

Untouched

Output - Vdd

1

1

1

0

X

Touched

PWM Output

1

1

1

1

X

Untouched

Output - 0 V

1

1

1

1

X

Touched

PWM Output