Jump to main content
SAM L21 Family Data Sheet SAM L21
SAM L21 Family Data Sheet SAM L21
Product Pages
ATSAML21E15B ATSAML21E16B ATSAML21E17B ATSAML21E18B ATSAML21G16B ATSAML21G17B ATSAML21G18B ATSAML21J16B ATSAML21J17B ATSAML21J18B
  1. Home
  2. 17 GCLK - Generic Clock Controller
  3. 17.5 Product Dependencies
  4. 17.5.1 I/O Lines

SAM L21

  • Introduction
  • Features
  • 1 Description
  • 2 Configuration Summary
  • 3 Ordering Information
  • 4 Block Diagram
  • 5 Pinout
  • 6 Signal Descriptions List
  • 7 I/O Multiplexing and Considerations
  • 8 Analog Connections of Peripherals
  • 9 Power Supply and Start-Up Considerations
  • 10 Product Mapping
  • 11 Memories
  • 12 Processor and Architecture
  • 13 PAC - Peripheral Access Controller
  • 14 Peripherals Configuration Summary
  • 15 DSU - Device Service Unit
  • 16 Clock System
  • 17 GCLK - Generic Clock Controller
    • 17.1 Overview
    • 17.2 Features
    • 17.3 Block Diagram
    • 17.4 Signal Description
    • 17.5 Product Dependencies
      • 17.5.1 I/O Lines
      • 17.5.2 Power Management
      • 17.5.3 Clocks
      • 17.5.4 DMA
      • 17.5.5 Interrupts
      • 17.5.6 Events
      • 17.5.7 Debug Operation
      • 17.5.8 Register Access Protection
      • 17.5.9 Analog Connections
    • 17.6 Functional Description
    • 17.7 Sleep Mode Operation
    • 17.8 Additional Features
    • 17.9 Register Summary
    • 17.10 Register Description
  • 18 MCLK – Main Clock
  • 19 RSTC – Reset Controller
  • 20 PM – Power Manager
  • 21 OSCCTRL – Oscillators Controller
  • 22 OSC32KCTRL – 32KHz Oscillators Controller
  • 23 SUPC – Supply Controller
  • 24 WDT – Watchdog Timer
  • 25 RTC – Real-Time Counter
  • 26 DMAC – Direct Memory Access Controller
  • 27 EIC – External Interrupt Controller
  • 28 NVMCTRL – Non-Volatile Memory Controller
  • 29 PORT - I/O Pin Controller
  • 30 EVSYS – Event System
  • 31 SERCOM – Serial Communication Interface
  • 32 SERCOM USART – SERCOM Universal Synchronous and Asynchronous Receiver and Transmitter
  • 33 SERCOM SPI – SERCOM Serial Peripheral Interface
  • 34 SERCOM I2C – SERCOM Inter-Integrated Circuit
  • 35 TC – Timer/Counter
  • 36 TCC – Timer/Counter for Control Applications
  • 37 TRNG – True Random Number Generator
  • 38 AES – Advanced Encryption Standard
  • 39 USB – Universal Serial Bus
  • 40 CCL – Configurable Custom Logic
  • 41 Operational Amplifier Controller (OPAMP)
  • 42 ADC – Analog-to-Digital Converter
  • 43 AC – Analog Comparators
  • 44 DAC – Digital-to-Analog Converter
  • 45 PTC - Peripheral Touch Controller
  • 46 Electrical Characteristics
  • 47 Electrical Characteristics - Extended Temperature Range 105°C
  • 48 Typical Characteristics
  • 49 Appendix A
  • 50 Packaging Information
  • 51 Schematic Checklist
  • 52 Conventions
  • 53 Acronyms and Abbreviations
  • 54 Datasheet Revision History
  • Microchip Information

17.5.1 I/O Lines

Using the GCLK I/O lines requires the I/O pins to be configured.

References:

PORT - I/O Pin Controller

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.

Microchip Facebook
Microchip LinkedIn
Microchip Twitter
Microchip YouTube
Microchip Instagram
Microchip Weibo
Microchip Blog
Contact |
Legal |
Privacy Policy |
Cookies |
Careers

Stay on the leading edge with our blog

MicroSolutions

© Copyright 1998-2022 Microchip Technology Inc. All rights reserved.