SpringCore
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  •  Host Protocols
    •  Direct Protocol
      • Protocol and format
      • Encapsulation within CCID
      • List of CLAsses
      • List of STAtus
      • Secure Communication
      •  PROTOCOL class
        • PING
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        • GET DESCRIPTOR
        • STAY QUIET
        • CLEAR QUIET
        • AUTHENTICATE
        • CHANGE KEY
        • SET SERIAL PARAMETERS
        • HOST EVENT POLL
      •  BARCODE class
        • GET CURRENT MODE
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        • SET SYMBOLOGY
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      •  CONTROL class
        • List of INStructions
        • List of STAtus
        •  Queries
          •  GET DATA
            • HARDWARE CHARACTERISTICS
            • NETWORK STATE
            • POWER STATE
            • BATTERY DATA
            • TEMPERATURES
            • VOLTAGE AND CURRENT
            • DEVICE STATE
          • BENCHMARK CLEAR
          • BENCHMARK GET
          • GET NETWORK STATS
          • GET BLE STATS
        •  Actions
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          • IBEACON
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          • COMMON ACTION
        •  IOs and UI
          • I2C READ
          • I2C WRITE
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          • SET GPIOS
          • GET CONTROLS
          • PLAY SEQUENCE
          • SET LED RGB
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        •  Configuration
          • READ FREE REGISTER
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          • WRITE REGISTER
          • LOAD FACTORY CONFIG
          • SAVE FACTORY CONFIG
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          • SET DATETIME
          • MICORE
          • RELOAD CONFIG
        •  CCID
          • CCID GET SLOT NAME
          • CCID STOP SLOT
          • CCID START SLOT
          • CCID CONTROL SLOT
        •  NFC modes
          • NFC POLLER
          • NFC LISTENER
          • NFC HCE STOP
          • NFC HCE START
        •  Reader
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          • DIRECT OUTPUT ENABLE
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          • BARCODE STOP
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          • BARCODE START
        •  PKI
          • GET PKI SUBJECT
          • READ PKI CERTIFICATE
          • WRITE PKI CERTIFICATE
        •  Authenticity
          • IS SEAL GENUINE
          • GET SEAL SUBJECT
          • READ SEAL SIGNATURE
          • WRITE SEAL SIGNATURE
      •  ATCRYPTO class
        • INIT
        • BLANK
        • SET KEY USER
        • SET KEY ADMIN
        • SET PRIVATE KEY
        • GENERATE PRIVATE KEY
        • GET PUBLIC KEY
        • SIGN
        • HASH AND SIGN
        • ECDH
        • GET CSR
        • GET CSR EX
      • SAM AV class
      • HCE class
      • READER class
      •  DFU class
        • List of INStructions
        • List of STAtus
        • GET CONTEXT
        • RESET
        • PUSH TO STORAGE and PUSH TO STORAGE FAST
        • DUMP STORAGE
        • CLEAR STORAGE
        • PUSH TO STORAGE CANCEL
        • PUSH TO ROM
        • Format of Firmware files
      • ECHO class
      • LOGGING class
    •  CCID Protocol (PCSC)
      • Non-USB Control
      • Non-USB Notifications
    • HID Protocol (RFID Scanner)
    •  Smart Reader Protocols
      •  TLV Protocol
        •  $SCRDR Messages
          • $SCRDR Message
          • $SCCMD Message
        •  JSON Messages
          • META Message
          • STATUS Message
          • READER EVENT Message
          • READER COMMAND Message
        •  MK1 Protocol
        • SpringProx Legacy Protocol
      •  PCSC Operation
        •  Standard and API
          • Standard
          • API
          • NET library
        •  PCSC-enabled systems
          •  Windows
            • USB
            • Bluetooth
            • Network
          •  Linux
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            • Network
          •  Mac OS X
            • USB
        •  PCSC-like libraries
          • Android
          • iOS
          • Windows NET
        •  APDU Interpreter
          • Command list
          • Status Words
          •  Standard instructions
            • GET DATA
            • READ BINARY
            • UPDATE BINARY
            • LOAD KEY
            • GENERAL AUTHENTICATE
            • GET CHALLENGE
          •  Vendor instructions
            • CONTROL
            •  SLOT CONTROL
              • SLOT CONTROL CL
              • SLOT CONTROL CT
            • MIFARE CLASSIC READ
            • MIFARE CLASSIC WRITE
            • MIFARE CLASSIC VALUE
            •  RFID
              • Read Single Block
              • Write Single Block
              • Lock Block
              • Read Multiple Blocks
              • Write Multiple Blocks
              • Select
              • Write AFI
              • Lock AFI
              • Write DSFID
              • Lock DSFID
              • Get System Information
              • Get Multiple Block Security Status
              • Extended Read Single Block
              • Extended Write Single Block
              • Extended Lock Block
              • Extended Read Multiple Blocks
              • Extended Write Multiple Blocks
              • Extended Get Multiple Block Security Status
            •  HCE
              • POLL HCE
              • PUSH HCE
              • CONTROL HCE
            •  SE
              • ATECC SIGN
              • ATECC LOAD KEY
              • ATECC GEN KEY
              • ATECC GET PUB
              • ATECC HASH SIGN
              • ATECC DH
            • ECHO
            • ENCAPSULATE
        • Direct Protocol
      •  Smart Reader Operation
        •  Template engine
          • Technology Selector register
          • Output Format register
          • Output Prefix register
          • Options register
        •  NFC Templates
          • ID Only
          • ISO Data
          • NDEF Data
          • Desfire ID
          • Desfire Data
          • Mifare UltraLight
          • Mifare UltraLight AES ID
          • Mifare UltraLight AES Data
          • Mifare Classic
          • Mifare Plus SL3
          • ISO 15693 Memory
          • EM4134 Memory
          • SpringBlue
          • Orange NFC Retail
          • Orange NFC Office
          • STid Mobile ID NFC
          • Apple VAS
          • Google SmartTap
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        •  BLE Templates
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          • Orange Pack ID
          • STid Mobile ID BLE
        •  Python engine
          • startup script
          • processNfc script
          • output script
          •  springcore module
            • springcore
          •  springcore scard module
            • springcore.scard
            • springcore.scard.Card
            • springcore.scard.CardReader
          • logging module
          • utils module
          •  3rd party modules
            • mbedtls
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          •  Constants
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        •  RFID Scanner Operation
          •  Non-volatile memory
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              •  Internals
                • Firmware ID
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                • USER CODE CRC
                • HW AutoDetect
              •  Custom integrations
                • Brand ID
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                • Factory Public Key
                • Factory Read Key
                • Master Card AID
            •  Configuration
              •  Inventory
                • Configuration GUID
                • Inventory ID
                • Location
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                • Rfu6
                • Rfu7
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              •  Contactless
                • General
                • CCID Protocols
                • CCID Bitrates
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                • CCID ATR rules
                • Compliance
                • Advanced power control
                • VASUP frame
                • NFC-A specific options
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                • custom integration
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                • custom integration settings 2
                • custom integration settings 3
              •  Barcode
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              •  Network
                • IPv4 Settings
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              •  MQTT Client
                • Server
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                • Driver support
                • CCID host timers
                • APDU interpreter
              •  Main configuration
                • Profile
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                • USB BLE switching
                • Profile addons
                • Battery
                • Battery storage guard
                • Ethernet options
                •  WiFi settings
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                • Options
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              •  Security
                • Access Conditions
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            •  Statistics
              • Startup count
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              • By host config change count
              • By Master Card config change count
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              • Daugther Board upgrade count
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              • ACIO firmware upgrade count
              • Micore settings change count
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              • Temperature fatal count
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                  •  PKI keys and certificates
                    •  TLS client with MQTT
                      • Device certificate and public key
                      • Sample configurations as MQTT-TLS client
                      • Connecting to your own MQTT-TLS server
                • Licenses and credits
                • Revision history

                Non-volatile memory Statistics TCP connection count

                January 28, 2026 at 12:08 AM

                #TCP connection count

                Address : 04D4 (bank 4, register D4)

                Size : 4 bytes

                Type : DWORD

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