Jump to main content
Low-Power, 32-bit Cortex-M0+ MCU with Advanced Analog and PWM
Search
Product Pages
ATSAMD21E15
ATSAMD21E15L
ATSAMD21E16
ATSAMD21E16L
ATSAMD21E17
ATSAMD21E18
ATSAMD21G15
ATSAMD21G16
ATSAMD21G16L
ATSAMD21G17
ATSAMD21G18
ATSAMD21J15
ATSAMD21J16
ATSAMD21J17
ATSAMD21J18
Home
27
SERCOM SPI – SERCOM Serial Peripheral Interface
27.6
Functional Description
27.6.3
Additional Features
Features
1
Description
2
Configuration Summary
3
SAM D21 Ordering Information
(1)
4
Block Diagram
5
Pinout
6
Signal Descriptions List
7
I/O Multiplexing and Considerations
8
Power Supply and Start-Up Considerations
9
Product Mapping
10
Memories
11
Processor And Architecture
12
Peripherals Configuration Summary
13
DSU - Device Service Unit
14
Clock System
15
GCLK - Generic Clock Controller
16
PM – Power Manager
17
SYSCTRL – System Controller
18
WDT – Watchdog Timer
19
RTC – Real-Time Counter
20
DMAC – Direct Memory Access Controller
21
EIC – External Interrupt Controller
22
Nonvolatile Memory Controller (NVMCTRL)
23
PORT - I/O Pin Controller
24
EVSYS – Event System
25
SERCOM – Serial Communication Interface
26
SERCOM USART
27
SERCOM SPI – SERCOM Serial Peripheral Interface
27.1
Overview
27.2
Features
27.3
Block Diagram
27.4
Signal Description
27.5
Product Dependencies
27.6
Functional Description
27.6.1
Principle of Operation
27.6.2
Basic Operation
27.6.3
Additional Features
27.6.3.1
Address Recognition
27.6.3.2
Preloading of the Client Shift Register
27.6.3.3
Host with Several Clients
27.6.3.4
Loop-Back Mode
27.6.3.5
Hardware Controlled
SS
27.6.3.6
SPI Select Low Detection
27.6.4
DMA, Interrupts, and Events
27.6.5
Sleep Mode Operation
27.6.6
Synchronization
27.7
Register Summary
27.8
Register Description
28
SERCOM I
2
C – Inter-Integrated Circuit
29
I2S - Inter-IC Sound Controller
30
TC – Timer/Counter
31
TCC – Timer/Counter for Control Applications
32
USB – Universal Serial Bus
33
ADC – Analog-to-Digital Converter
34
AC – Analog Comparators
35
DAC – Digital-to-Analog Converter
36
Peripheral Touch Controller (PTC)
37
Electrical Characteristics at 85℃
38
Electrical Characteristics at 105°C
39
Electrical Characteristics at 125°C
40
AEC-Q100 125°C Specifications
41
SAM DA1 Electrical Characteristics
42
Appendix A
43
Appendix B
44
Packaging Information
45
Schematic Checklist
46
Conventions
47
Acronyms and Abbreviations
48
Data Sheet Revision History
Microchip Information
27.6.3 Additional Features
