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ZHCSIQ2B September 2018 – January 2019 LP5030 , LP5036

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机械数据 (封装 | 引脚)

RJV|46
- MPQF505A

散热焊盘机械数据 (封装 | 引脚)

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8.3.2 LED Bank Control

For most LED-animation effects, like blinking and breathing, all the RGB LEDs have the same lighting pattern. Instead of controlling the individual LED separately, which occupies the microcontroller resources heavily, the LP503x device provides an easy coding approach, the LED bank control.

Each channel can be configured as either independent control or bank control through the LEDx_Bank_EN register. When LEDx_Bank_EN = 0 (default), the LED is controlled independently by the related color-mixing and intensity-control registers. When LEDx_Bank_EN = 1, the LP503x device drives the LED in LED bank-control mode. The LED bank has its own independent PWM control scheme, which is the same structure as the PWM scheme of each channel. See Each Channel PWM Control for more details. When a channel configured as LED bank-control mode, the related color mixing and intensity control is governed by the bank control registers (BANK_A_COLOR, BANK_B_COLOR, BANK_C_COLOR, and BANK_BRIGHTNESS) regardless of the inputs on its own color-mixing and intensity-control registers.

Figure 13. Bank PWM Control Scheme

Table 1. Bank Number and LED Number Assignment

OUT NUMBER	BANK NUMBER	RGB LED MODULE NUMBER
OUT0	Bank A	LED0
OUT1	Bank B
OUT2	Bank C
OUT3	Bank A	LED1
OUT4	Bank B
OUT5	Bank C
OUT6	Bank A	LED2
OUT7	Bank B
OUT8	Bank C
OUT9	Bank A	LED3
OUT10	Bank B
OUT11	Bank C
OUT12	Bank A	LED4
OUT13	Bank B
OUT14	Bank C
OUT15	Bank A	LED5
OUT16	Bank B
OUT17	Bank C
OUT18	Bank A	LED6
OUT19	Bank B
OUT20	Bank C
OUT21	Bank A	LED7
OUT22	Bank B
OUT23	Bank C
OUT24	Bank A	LED8
OUT25	Bank B
OUT26	Bank C
OUT27	Bank A	LED9
OUT28	Bank B
OUT29	Bank C
OUT30	Bank A	LED10⁽¹⁾
OUT31	Bank B
OUT32	Bank C
OUT33	Bank A	LED11⁽¹⁾
OUT34	Bank B
OUT35	Bank C

(1) For LP5036 only.

With the bank control configuration, the LP503x device enables users to achieve smooth and live LED effects globally with an ultra-simple software effort. Figure 14 shows an example using LED0 as an independent RGB indicator and others with group breathing effect.

Figure 14. Bank PWM Control Example