收藏本站
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
?
Figure ? 19. ? Watch ? Dog ? Timer ? Reset ? Trigger ?
?
?
In ? normal ? operation, ? WDT_OUTPUT ? is ? high, ? which ? keeps ? WDT_OUT_FLT ? high ? and ? the ? buffer ? in ? the ? OFF ?
state. ? As ? soon ? as ? the ? WDOG ? goes ? active ? low, ? WDT_OUT_FLT ? is ? pulled ? low ? through ? C253, ? and ? the ? buffer ?
(U22) ? is ? enabled. ? The ? always ? low ? input ? to ? the ? buffer ? is ? then ? sent ? to ? the ? POR_B ? pin ? and ? forces ? the ?
Processor ? into ? reset. ? The ? RC ? circuit ? formed ? by ? R215 ? and ? C253 ? will ? then ? begin ? to ? raise ? the ? voltage ? level ?
on ? WDT_OUT_FLT, ? until ? after ? XX ? msec, ? the ? active ? low ? output ? enable ? pin ? of ? U22 ? will ? turn ? off ? the ? Buffer ?
and ? POR_B ? will ? return ? high. ? In ? coming ? out ? of ? reset, ? the ? WDOG ? will ? then ? return ? to ? the ? HIGH ? or ? OFF ? state, ?
and ? the ? Processor ? will ? return ? to ? normal ? operations. ?
?
?
5.4.6. Wakeup   After   User   Initiated   Standby  
?
Q13 ? is ? a ? dual ? P ‐ channel/N ‐ channel ? MOSFET ? designed ? to ? take ? a ? transition ? from ? a ? low ? state ? to ? a ? high ? state ?
on ? PMIC_ON_REQ ? (pin ? W15) ? and ? turn ? it ? into ? a ? PMIC ? nONKEY ? request ? to ? bring ? the ? Dialog ? DA9053 ? chip ?
out ? of ? a ? standby ? state ? to ? a ? fully ? on ? state. ? The ? PMIC_ON_REQ ? pin ? has ? been ? designed ? to ? work ? with ? the ?
Freescale ? companion ? PMIC ? chip ? and ? is ? always ? in ? a ? high ? state ? even ? if ? the ? user ? forces ? the ? board ? into ?
standby ? with ? the ? nONKEY. ? To ? configure ? the ? wakeup ? after ? user ? initiated ? standby ? feature, ? the ? user ? first ?
has ? to ? program ? the ? software ? to ? transition ? the ? PMIC_ON_REQ ? to ? the ? low ? state ? after ? a ? start ? up ? or ? resume ?
after ? standby ? operation. ? This ? will ? place ? the ? circuit ? in ? a ? correct ? configuration ? to ? request ? a ? startup ? from ?
the ? standby ? state. ? Without ? this ? software ? change, ? pressing ? the ? nONKEY ? after ? a ? forced ? standby ? will ? not ?
wake ? the ? board ? back ? up ? out ? of ? sleep. ?
?
To ? keep ? the ? board ? operating ? correctly ? before ? this ? software ? modification ? is ? made, ? Q13 ? has ? not ? been ?
populated ? on ? the ? board. ? When ? the ? developer ? has ? modified ? code ? to ? make ? this ? work, ? Q13 ? can ? be ?
populated ? to ? complete ? the ? circuit. ? Information ? on ? Q13 ? can ? be ? found ? in ? section ? 14, ? Bill ? of ? Materials. ?
?
? ?
Freescale Semiconductor
Hardware User Guide for i.MX53 Quick Start Board,
Preliminary Rev 0.91
50
PUBI – Public Use Business Information ?
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
MCM69C432TQ20 IC CAM 1MB 50MHZ 100LQFP
MCP1401T-E/OT IC MOSFET DRVR INV 500MA SOT23-5
MCP1403T-E/MF IC MOSFET DRIVER 4.5A DUAL 8DFN
MCP1406-E/SN IC MOSFET DVR 6A 8SOIC
MCP14628T-E/MF IC MOSFET DVR 2A SYNC BUCK 8-DFN
MCP14700T-E/MF IC MOSFET DRIVER HIGH/LOW 8DFN
MCP14E3T-E/MF IC MOSFET DVR 4.0A DUAL 8DFN
MCP14E6T-E/MF IC MOSFET DRIVER 2A 8DFN-S
相关代理商/技术参数
MCIMX53-START-R 制造商:Freescale Semiconductor 功能描述:DEV KIT I.MX53 1GHZ ARM CORTEX A8 制造商:Freescale Semiconductor 功能描述:I.MX53, WITH PMIC, QUICK START BOARD 制造商:Freescale Semiconductor 功能描述:I.MX53, WITH PMIC, QUICK START BOARD; Silicon Manufacturer:Freescale; Core Architecture:ARM; Core Sub-Architecture:Cortex-A8; Silicon Core Number:i.MX53; Silicon Family Name:i.MX53; Kit Contents:Processor, PMIC, microSD, Power ;RoHS Compliant: No
MCIMX53XA 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:i.MX53xA Automotive and Infotainment Applications Processors
MCIMX53XD 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:i.MX53xD Applications Processors for Consumer Products
MCIMX6 SOLO 制造商:RIOTBOARD 功能描述:I.MX6 GC2000 CORTEX A9 DEV BOARD 制造商:RIOTBOARD 功能描述:RIOT BOARD DEVELOPMENT PLATFORM
MCIMX6 SOLO 制造商:RIOTBOARD 功能描述:Freescale i.MX6Solo community board
MCIMX6D4AVT08AC 功能描述:处理器 - 专门应用 i.MX6D AUTO RoHS:否 制造商:Freescale Semiconductor 类型:Multimedia Applications 核心:ARM Cortex A9 处理器系列:i.MX6 数据总线宽度:32 bit 最大时钟频率:1 GHz 指令/数据缓存: 数据 RAM 大小:128 KB 数据 ROM 大小: 工作电源电压: 最大工作温度:+ 95 C 安装风格:SMD/SMT 封装 / 箱体:MAPBGA-432
MCIMX6D4AVT08ACR 功能描述:处理器 - 专门应用 i.MX6D AUTO RoHS:否 制造商:Freescale Semiconductor 类型:Multimedia Applications 核心:ARM Cortex A9 处理器系列:i.MX6 数据总线宽度:32 bit 最大时钟频率:1 GHz 指令/数据缓存: 数据 RAM 大小:128 KB 数据 ROM 大小: 工作电源电压: 最大工作温度:+ 95 C 安装风格:SMD/SMT 封装 / 箱体:MAPBGA-432
MCIMX6D4AVT08ACR2 制造商:Freescale Semiconductor 功能描述:MCIMX6D4AVT08ACR2 - Tape and Reel