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5-Volt Motor Control MCU
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20
Device Service Unit (DSU)
20.11
Functional Description
5-Volt, 128-KB Flash, 16-KB SRAM with Advanced Analog
1
Configuration Summary
2
Ordering Information
3
Block Diagram
4
Pinout and Packaging
5
Signal Description
6
Power Supply and Start-Up Considerations
7
Product Mapping
8
Memories
9
Processor and Architecture
10
Peripherals Configuration Summary
11
Clock System
12
Generic Clock Controller (GCLK)
13
Main Clock (MCLK)
14
Oscillators Controller (OSCCTRL)
15
32.768 kHz Oscillators Controller (OSC32KCTRL)
16
Power Manager (PM)
17
Supply Controller (SUPC)
18
Reset Controller (RSTC)
19
Peripheral Access Controller (PAC)
20
Device Service Unit (DSU)
20.1
Overview
20.2
Features
20.3
Block Diagram
20.4
Signal Description
20.5
Peripheral Dependencies
20.6
Debug Operation
20.7
Chip Erase
20.8
Programming
20.9
Intellectual Property Protection
20.10
Device Identification
20.11
Functional Description
20.11.1
Principle of Operation
20.11.2
Basic Operation
20.11.3
32-bit Cyclic Redundancy Check CRC32
20.11.4
Debug Communication Channels
20.11.5
Testing of On-Board Memories MBIST
20.11.6
System Services Availability when Accessed Externally and Device is Protected
20.12
Register Summary
21
Divide and Square Root Accelerator (DIVAS)
22
Watchdog Timer (WDT)
23
Real-Time Counter (RTC)
24
Direct Memory Access Controller (DMAC)
25
External Interrupt Controller (EIC)
26
Nonvolatile Memory Controller (NVMCTRL)
27
I/O Pin Controller (PORT)
28
Event System (EVSYS)
29
Serial Communication Interface (SERCOM)
30
SERCOM Synchronous and Asynchronous Receiver and Transmitter (SERCOM USART)
31
SERCOM Serial Peripheral Interface (SERCOM SPI)
32
SERCOM Inter-Integrated Circuit (SERCOM I
2
C)
33
Timer Counter (TC)
34
Timer/Counter for Control (TCC) Applications
35
Configurable Custom Logic (CCL)
36
Analog-to-Digital Converter (ADC)
37
Sigma-Delta Analog-to-Digital Converter (SDADC)
38
Analog Comparators (AC)
39
Digital-to-Analog Converter (DAC)
40
Temperature Sensor (TSENS)
41
Frequency Meter (FREQM)
42
Position Decoder (PDEC)
43
Electrical Characteristics 85℃
44
Electrical Characteristics 125°C
45
Packaging Information
46
Schematic Checklist
47
Appendix
48
Revision History
The Microchip Website
Product Change Notification Service
Customer Support
Microchip Devices Code Protection Feature
Legal Notice
Trademarks
Quality Management System
Worldwide Sales and Service
20.11 Functional Description
