Jump to main content
Second-Generation Smart Energy Platform Solution including Integrated Metrology, Dual Arm® Cortex®-M4F Cores, Security and LCD Controller
Second-Generation Smart Energy Platform Solution including Integrated Metrology, Dual Arm® Cortex®-M4F Cores, Security and LCD Controller
Product Pages
PIC32CX1025MTSH PIC32CX2051MTSH PIC32CX5112MTSH
  1. Home
  2. 15 Supply Controller (SUPC)
  3. 15.4 Functional Description
  4. 15.4.10 Register Write Protection
Previous | Next

  • Description
  • Features
  • 1 Block Diagram
  • 2 Configuration Summary
  • 3 Package and Pinout
  • 4 Power Supply and Power Control
  • 5 Input/Output Lines
  • 6 Core and Interconnect
  • 7 Product Mapping and Peripheral Access
  • 8 Memories
  • 9 Safety and Security Features
  • 10 Real-Time Event Management
  • 11 Peripherals
  • 12 Cortex-M4 Processor (Arm)
  • 13 Flash Programming, Debug and Test Features
  • 14 ROM Code and Boot Strategies
  • 15 Supply Controller (SUPC)
    • 15.1 Description
    • 15.2 Embedded Characteristics
    • 15.3 Block Diagram
    • 15.4 Functional Description
      • 15.4.1 Overview
      • 15.4.2 Slow Clock Generator
      • 15.4.3 Core Voltage Regulator and Low-Power Modes
      • 15.4.4 VDD3V3 Supply Monitor
      • 15.4.5 Power-up, Power-down and SUPC Reset
      • 15.4.6 VDDCORE Domain Reset
      • 15.4.7 Wake-up Sources
      • 15.4.8 IO Settings Retention Mode
      • 15.4.9 Backup Domain IO Isolation
      • 15.4.10 Register Write Protection
      • 15.4.11 Register Bits in Backup Domain (VDDBU)
    • 15.5 Register Summary
  • 16 Reset Controller (RSTC)
  • 17 System Controller Write Protection (SYSCWP)
  • 18 Dual Watchdog Timer (DWDT)
  • 19 Clock Generator
  • 20 Power Management Controller (PMC)
  • 21 Parallel Input/Output Controller (PIO)
  • 22 Real-Time Clock (RTC)
  • 23 Real-time Timer (RTT)
  • 24 General Purpose Backup Registers (GPBR)
  • 25 Special Function Registers (SFR)
  • 26 Special Function Registers Backup (SFRBU)
  • 27 Bus Matrix (MATRIX)
  • 28 Chip Identifier (CHIPID)
  • 29 Secure Embedded Flash Controller (SEFC)
  • 30 Interprocessor Communication (IPC)
  • 31 Memory to Memory (MEM2MEM)
  • 32 Peripheral DMA Controller (PDC)
  • 33 Cortex-M Cache Controller (CMCC)
  • 34 Flexible Serial Communication Controller (FLEXCOM)
  • 35 Quad Serial Peripheral Interface (QSPI)
  • 36 Segment LCD Controller (SLCDC)
  • 37 Timer Counter (TC)
  • 38 Analog-to-Digital Converter (ADC) Controller
  • 39 Analog Comparator Controller (ACC)
  • 40 Advanced Encryption Standard (AES)
  • 41 Advanced Encryption Standard Bridge (AESB)
  • 42 Secure Hash Algorithm (SHA)
  • 43 True Random Number Generator (TRNG)
  • 44 Integrity Check Monitor (ICM)
  • 45 Classical Public Key Cryptography Controller (CPKCC)
  • 46 Energy Metering Analog Front End (EMAFE)
  • 47 Multi Channel Serial Peripheral Interface (MCSPI)
  • 48 Pulse Width Modulation Controller (PWM)
  • 49 Universal Asynchronous Receiver Transmitter (UART)
  • 50 Electrical Characteristics
  • 51 Mechanical Characteristics
  • 52 Marking
  • 53 Ordering Information
  • 54 Revision History
  • 55 Product Identification System
  • Microchip Information

15.4.10 Register Write Protection

To prevent any single software error from corrupting SYSC behavior, certain registers in the address space can be write-protected by writing SYSC_WPMR.WPEN=1.

The following registers can be write-protected:

  • SUPC Control Register
  • SUPC Supply Monitor Mode Register
  • SUPC Mode Register
  • SUPC Wakeup Mode Register
  • SUPC Wakeup Inputs Register
  • SUPC Extended Mode Register
  • SUPC Backup Mode Register

The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.

About

Company
Careers
Contact Us
Media Center
Investor Relations
Corporate Responsibility

Support

Microchip Forums
AVR Freaks
Design Help
Technical Support
Export Control Data
PCNs

Quick Links

microchipDIRECT.com
Microchip University
myMicrochip
Blogs
Reference Designs
Parametric Search
Microchip Logo

Microchip Technology Inc.

2355 West Chandler Blvd.

Chandler, Arizona, USA

Microchip Facebook
Microchip LinkedIn
Microchip Twitter
Microchip Instagram
Microchip Weibo

© Copyright 1998-2024 Microchip Technology Inc. All rights reserved. Shanghai ICP Recordal No.09049794

Terms Of Use
Privacy Notice
Legal
Your Privacy Choices California Consumer Privacy Act (CCPA) Opt-Out Icon