Datasheet > AAT2831

AAT2831

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
ANALOGICTECH		便携式便携式设备
页数	文件大小	规格书
21页	541K
描述
800mA Total Display Solution for Portable Devices

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AAT2831 数据手册

AAT2830/31

800mA Total Display Solution

for Portable Devices

or 16, so that Address 0 is signified by 17 rising

edges, Address 1 by 18 rising edges, Address 2 by

19 rising edges, and so on. Data is set to any num-

ber of rising edges between 1 and including 16.

EN/SET

Rising

Address

Edges

Function

Not Applicable

Backlight Current BL1-BL6

BL1-BL4 On/Off Control

BL5-BL6 On/Off Control

Flash Current

A typical write protocol consist of the following: first a

burst of EN/SET rising edges that identify/target a

particular address followed by EN/SET being held

logic high for the T_LATtimeout period to latch the

address value in the registers, then another burst of

rising edges that signify data with the accompanying

T_LATtimeout period to latch the data value in the reg-

isters. Once an address is set, then multiple writes

to the corresponding data register are allowed with-

out having to write to the address for every change

in data values. When EN/SET is held low longer

than T_OFF(500µs), the AAT2830/31 enters shutdown

mode operation and draws less than 1µA from the

input supply voltage. Data and address registers are

cleared (reset to 0) in shutdown mode operation.

Flash Channel Control

Flash Timer

Red Color

Green Color

Blue Color

RGB Intensity

RGB Mode

RGB Current

Not Applicable

Table 1b: AS Cwire Serial Interface Addressing

with Independent Channel Control Enabled.

Table 1a contains the AS Cwire serial interface

address functionality when independent channel

control is disabled (independent channel control is

disabled by default) and conversely Table 1b con-

Backlight Current Control (Addresses 0-2)

tains the AS Cwire serial interface address function-

The six channel backlight inputs, BL1-BL6, can

drive six individual LEDs to a maximum current of

ality when independent channel control is enabled.

30mA per channel. The EN/SET AS Cwire serial

EN/SET

Rising

interface enables all channels and sets the current

magnitude as a percentage of the maximum cur-

rent, programmed by an external resistor at BSET

(see Figure 5). To set the backlight current (mini-

mum to maximum current) of the main display

LEDs (BL1-BL4), the user would write data to

Address 1. To set the backlight current for the sub

display LEDs (BL5-BL6), the user would write data

to Address 2. To write to both main display and sub

display LEDs (BL1-BL6) at the same time, the user

would write to Address 0.

Address Edges

Function

Backlight Current BL1-BL6

Main Backlight Current

BL1-BL4

Sub Backlight Current BL5-BL6

Low Backlight Current

Flash Current

Flash Channel Control

Flash Timer

Red Color

Green Color

Blue Color

RGB Intensity

RGB Mode

RGB Current

Backlight Independent

Channel Control

Table 1a: AS Cwire Serial Interface Addressing

with Independent Channel Control Disabled.

2830.2007.09.1.0

1...7 8 91011 12 13...21

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