• TPS3820: TPS3820 WDI Not Recognized Despite Compliant Signal, Batch Constant System Reset

  

  RuiPing Wu

  TI Thinks Resolved

  Part Number: TPS3820 1. End customer test failure: The board keeps asserting reset signal after power-up, system cannot boot up. 2. Root cause localized to watchdog circuit: The internal watchdog fails to recognize WDI feed pulses, watchdog timeout…

  • 1 month ago
  • Logic
  • Logic forum
Answered

• TPS3820: TPS3820-33 - Forcing RESET High During Initial MCU Programming

  

  Idan Itzikovich

  Resolved

  Part Number: TPS3820 Other Parts Discussed in Thread: TPS3828 Hi, We are using the TPS3820-33 as an external watchdog. WDI is connected directly to an MCU GPIO. During production programming (before firmware is loaded), the GPIO state is undefined…

  • Resolved

  • 5 months ago
  • Power management
  • Power management forum

• TPS3820-Q1: More information about TPS3820-Q1

  

  user5008616

  TI Thinks Resolved

  Part Number: TPS3820-Q1 Other Parts Discussed in Thread: TPS3820 Hello TI engineers: How can I get the information about TPS3820's internal auto-reset oscillator, e.g. duty, cycle time ... BestRegards

  • 8 months ago
  • Interface
  • Interface forum
Answered

• TPS3820-Q1: TPS3820-50QPDBVRQ1 Reset Pin Usage and Schematic Review

  

  user

  Resolved

  Part Number: TPS3820-Q1 Hello, I have several questions regarding the TPS3820-50QPDBVRQ1 device. Could you please answer each question separately? The schematic I am using is shown below; you may refer to it while answering the questions. Q1) When…

  • Resolved

  • 6 months ago
  • Power management
  • Power management forum
Answered

• TPS3820: TPS3820-33DBVRG4

  

  aida musa

  Resolved

  Part Number: TPS3820 Tool/software: Hi, please advise the different between TPS3820-33DBVR & TPS3820-33DBVRG4. Thanks in advance.

  • Resolved

  • over 1 year ago
  • Power management
  • Power management forum

• TPS3820-Q1: TPS3820 Delay after MR output

  

  SAMUEl LACHE

  TI Thinks Resolved

  Part Number: TPS3820-Q1 Tool/software: Hi, Datasheet of TPS3820-33 specifys that /RESET asserts "td" (time delay) after rising of VDD Is "td" also applied between rising of /MR and rising of /RESET? Thank you

  • over 1 year ago
  • Power management
  • Power management forum

• TPS3820-Q1: TPS3820-Q1 problem

  

  Luis Carvajal

  TI Thinks Resolved

  Part Number: TPS3820-Q1 Other Parts Discussed in Thread: TPS3820 Tool/software: Dear experts, I'm trying to work with the watchdog TPS3820-Q1 and a NXP microcontroller. The circuit is shown in the figure below: The signal WDI_UC is a GPIO from the…

  • over 1 year ago
  • Power management
  • Power management forum

• TPS3820: Unexpected Reset signal

  

  Ruixin Feng

  TI Thinks Resolved

  Part Number: TPS3820 Tool/software: Hi team, customer has a application that customer feedback TPS3820 occasionally output an unexpected reset signal. I'd like to clarify the application first. Customer use TPS3820 to reset M0 as below schematics…

  • 11 months ago
  • Power management
  • Power management forum

• TPS3820: 33DBVR

  

  Deeksha R

  TI Thinks Resolved

  Part Number: TPS3820 Tool/software: Need the following information for the part TPS3820-33DBVR for operating temperature -40 to 85 deg Cel Power Dissipation(PD)(mW) VCC to Reset Output Delay(tRD)(uS) Reset Timeout…

  • over 1 year ago
  • Power management
  • Power management forum
Answered

• TPS3820-Q1: RESETn transition time

  

  Lenio Cacula

  Resolved

  Part Number: TPS3820-Q1 Other Parts Discussed in Thread: TPS3820 , SN74AUP2G34 , TPS35 Tool/software: It was not clear to me whether the transition time of the RESETn output is specified in the datasheet. I need to understand the slew rate of the RESETn…

  • Resolved

  • 9 months ago
  • Power management
  • Power management forum

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