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Ultra Low-Power, 32-bit Cortex-M23 MCUs with TrustZone, Crypto, and Enhanced PTC

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15 PAC - Peripheral Access Controller
15.5 Functional Description
15.5.2 Basic Operation
15.5.2.2 Initialization, Enabling and Resetting

Features
1 Configuration Summary
2 Ordering Information
3 Block Diagram
4 Pinouts
5 Signal Descriptions List
6 Power Considerations
7 Analog Peripherals Considerations
8 Device Startup
9 Product Mapping
10 Memories
11 Processor and Architecture
12 Peripherals Configuration Summary
13 SAM L11 Specific Security Features
14 Boot ROM
15 PAC - Peripheral Access Controller
16 Device Service Unit (DSU)
17 Clock System
18 GCLK - Generic Clock Controller
19 MCLK – Main Clock
20 FREQM – Frequency Meter
21 RSTC – Reset Controller
22 PM – Power Manager
23 OSCCTRL – Oscillators Controller
24 OSC32KCTRL – 32KHz Oscillators Controller
25 SUPC – Supply Controller
26 WDT – Watchdog Timer
27 RTC – Real-Time Counter
28 DMAC – Direct Memory Access Controller
29 EIC – External Interrupt Controller
30 NVMCTRL – Nonvolatile Memory Controller
31 TrustRAM (TRAM)
32 PORT - I/O Pin Controller
33 EVSYS – Event System
34 SERCOM – Serial Communication Interface
35 SERCOM USART - SERCOM Synchronous and Asynchronous Receiver and Transmitter
36 SERCOM SPI – SERCOM Serial Peripheral Interface
37 SERCOM I²C – SERCOM Inter-Integrated Circuit
38 TC – Timer/Counter
39 TRNG – True Random Number Generator
40 CCL – Configurable Custom Logic
41 ADC – Analog-to-Digital Converter
42 AC – Analog Comparators
43 DAC – Digital-to-Analog Converter
44 OPAMP – Operational Amplifier Controller
45 PTC - Peripheral Touch Controller
46 Electrical Characteristics
47 125°C Electrical Characteristics
48 AEC-Q100 Grade (-40°C to 125°C) Electrical Characteristics
49 AC and DC Characteristics Graphs
50 Packaging Information
51 Schematic Checklist
52 Conventions
53 Acronyms and Abbreviations
54 Appendix A: Migrating From SAM L21 to SAM L10/L11 (32-pin Package)
55 Appendix B: Migrating From SAM D20/D21 to SAM L10/L11 (32-pin Package)
56 Revision History
Legal Disclaimer
Microchip Information

15.5.2.2 Initialization, Enabling and Resetting

The PAC is always enabled after reset.

Only a hardware reset will reset the PAC module.

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