 |
数据搜索系统，热门电子元器件搜索 |
|
|
数据搜索系统，热门电子元器件搜索 |
|
ASL5015FHN 数据表(PDF) 24 Page - NXP Semiconductors |
|
|
|||||||||||||||||||||||||||||
ASL5015FHN 数据表(HTML) 24 Page - NXP Semiconductors |
|
|
24 / 69 page  NXP Semiconductors ASL5xxxyHz Matrix LED Controller (MLC) ASL5xxxyHz All information provided in this document is subject to legal disclaimers. © NXP B.V. 2019. All rights reserved. Product data sheet Rev. 2.1 — 5 February 2019 24 / 69 Bit Symbol Description 0 CLR_SC Clear short-circuit detection 0 — Always 0 when the microcontroller reads it. 1 — A 1 in this location to clear all the SC flags and restart the channels. 8.6.6.2 Read diagnostic bits, from MLC to microcontroller Table 13. Open Circuit and Short Circuit registers (Read only) Address Register D7 D6 D5 D4 D3 D2 D1 D0 35h READ_OC1 OC8 OC7 OC6 OC5 OC4 OC3 OC2 OC1 36h READ_OC2 unused OC12 OC11 OC10 OC9 37h READ_SC1 SC8 SC7 SC6 SC5 SC4 SC3 SC2 SC1 38h READ_SC2 unused SC12 SC11 SC10 SC9 Registers READ_OC1, READ_OC2, READ_SC1, and READ_SC2 are used to read the fail flags. The microcontroller can read these registers to know if any fail occurs during the system operation. These registers can be cleared with the CLEAR register (34h), bits 0 and 1. Or, the microcontroller can clear all the OC and SC flags sending the command 39. OC stands for "Open Circuit" and the number next to it represents the channel linked to the flag. SC satnds for "Short Circuit" and the number next to it represents the channel linked to the flag. Note: The MLC IC must be turned ON before the Buck converter provides current to the LED string, see start-up sequence in the application notes. When the MLC is ON, it is able to detect the open circuit condition and close the switch associated with the open LED, automatically. If the MLC is not running before the Buck converter and there is an open circuit condition, the MLC is not able to close the switch associated to the failure LED automatically, causing the voltage in the associated switch to be higher than the allowable maximum. This condition may damages the MLC IC. The system startup sequence is to turn ON the MLC IC first and wait until the POK bit is set to 1. Table 14. NTC - NTC control register (address 39h) bit allocation Bit 7 6 5 4 3 2 1 0 Symbol CPFAIL NTC NTCFAIL Reset 0 0 0 0 0 0 0 0 Access R/W R/W R/W R/W R/W R/W R/W R/W Table 15. NTC - NTC control register (address 39h) bit description Bit Symbol Description 7 CPFAIL Used for the internal charge pump circuit. 0 — No open or short condition is detected in the charge pump 1 — An open or short condition has happened in the external capacitor, the MLC cannot drive the gates of the switches, and the dimming function is not available. |
|
链接网址 |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 数据表链接 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
