VR4102 datasheet(459/701 Pages) NEC

459 / 701 page

CHAPTER 23 LED (LED CONTROL UNIT)

459

23.3 OPERATION FLOW

Set LEDHTSREG

Set LEDLTSREG

LEDCNTREG

LEDSTOP = 1

Set LEDASTCREG

LEDCNTREG

LEDENABLE = 1

LEDs blink

(Auto Stop)

LED blinking time setting

x LEDHTSREG

Sets LED lighting time.

x LEDLTSREG

Sets LED off time.

x LEDASTCREG

Sets number of LEDs blinking.

Caution Setting these registers to 0 is

prohibited because it may cause

undefined operation.

LED auto-stop setting

x LEDSTOP

Sets the LED blink auto-stop function to enable.

This setting terminates LED blinking

automatically after blinking time set above has

elapsed.

LED blinking start

x LEDENABLE

Starts LED blinking.

LEDs blink

Auto Stop

Counter = 0?

Yes

LEDENABLE = 0

LEDSTOP = 0

LEDINT = 1

LED blinking termination

x LEDENABLE = 0

Terminates LED blinking.

LED blinking

x Supervising the auto-stop counter

LED blinking terminates when the auto-stop

counter reaches 0.

Caution Setting the LEDENABLE or

LEDSTOP bit to 0 during blinking is

prohibited because it may cause

undefined operation.

LED blinking terminate interrupt generation

x LEDINT = 1

Generates an interrupt request to the ICU.

LEDs off

LEDs blinking

start condition

VR4102 Datasheet(PDF) 459 Page - NEC

VR4102 Datasheet(HTML) 459 Page - NEC

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Datasheet Download

Link URL