CAP1128 datasheet(60/75 Pages) MICROCHIP

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CAP1128

DS00001622B-page 60

 2015 Microchip Technology Inc.

6.38

LED Off Delay Register

The LED Off Delay register determines the amount of time that an LED remains at its maximum duty cycle (or minimum

as determined by the polarity controls) before it starts to ramp down. If the LED is operating in Breathe mode, this delay

is applied at the top of each “breath”. If the LED is operating in the Direct mode, this delay is applied when the LED is

unactuated.

Bits 6 - 4 - BR_OFF_DLY[2:0] - Determines the Breathe behavior mode off delay, which is the amount of time an LED

in Breathe behavior mode remains inactive after it finishes a breathe pulse (ramp on and ramp off), as shown in Figure 6-

5 (non-inverted polarity LEDx_POL = 1) and Figure 6-6 (inverted polarity LEDx_POL = 0). Available settings are shown

in Table 6-64.

1.5s

TABLE 6-63:

LED OFF DELAY REGISTER

ADDR

R/W

B5B4

B3B2

B1B0

Default

95h

R/W

LED Off Delay

BR_OFF_DLY[2:0]

DIR_OFF_DLY[3:0]

00h

FIGURE 6-5:

Breathe Behavior with Non-Inverted Polarity

TABLE 6-62:

RISE / FALL RATE DECODE (CONTINUED)

RISE_RATE/ FALL_RATE/ Bit Decode

Rise / Fall Time (TRISE / TFALL)

LED Actuated

100% - Breathe Max Min Cycle * Brightness

100% - Breathe Min Duty Cycle *

Brightness

LED Unactuated

Breathe Off

Delay

(BR_OFF_DLY)

LED

Brightness

Breathe

Period

(BR_PER)

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