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ST STM32L0 Series Manuals
Manuals and User Guides for ST STM32L0 Series. We have
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ST STM32L0 Series manuals available for free PDF download: Application Note
ST STM32L0 Series Application Note (52 pages)
Getting started with touch sensing control on STM32 microcontrollers
Brand:
ST
| Category:
Microcontrollers
| Size: 4.01 MB
Table of Contents
1 General Information
2
2 Terminology and Principle
3
Terminology
3
Principle
3
Table 1. Change Transfer Principle Documentation
4
Figure 1. Change Transfer Principle
4
3 Document Reference
5
Table 2. References Documentation
5
Figure 2. Main Documentation Tree
5
4 STM32L4 Touch Sensing Controller Online Presentation
6
Figure 3. STM32L4 Online Training
6
Figure 4. STM32L4 Touch Sensing Controller Online Training
6
5 Main Characteristics
7
Description
7
Signal Threshold
7
Figure 5. TSC Characteristics
7
Table 3. Signal Threshold Usage Documentation
8
Figure 6. Stmstudio Outputs
8
Charge Transfer
9
Table 4. Charge Transfer Documentation
9
Figure 7. Incomplete and Complete Charge Transfert Cycle
9
Sensitivity
10
Table 5. Sensitivity Documentation
10
Table 6. Dielectric Constants of Common Materials Used in a Panel Construction
10
Sensor
11
Key
11
Table 7. Key Documentation
11
Figure 8. Sensor Size
11
Linear or Slider
12
Table 8. Linear Touch Sensor Documentation
12
Figure 9. Interlaced Linear Touch Sensor with 3 Channels / 4 Electrodes (Half-Ended Electrodes Design)
12
Rotary or Wheel
13
Table 9. Rotary Sensor Documentation
13
Figure 10. Interlaced Patterned Rotary Sensor with 3 Channels / 3 Electrodes
13
Active Shield or Driven Shield
14
Table 10. Active Shield Documentation
14
Figure 11. Active Shield Principle
14
Layout and PCB
15
Led Rules
15
Table 11. Led Rules Documentation
15
Figure 12. Led Layout Example
15
Figure 13. Example of Cases Where a LED Bypass Capacitor Is Required
15
Electrode Not Located on PCB
16
Table 12. Electrode Documentation
16
Figure 14. Electrode Not Located on PCB Example
16
Ground, Shield and Sensors
17
Table 13. Layout Documentation
17
Figure 15. Hatched Ground and Signal Tracks
17
Figure 16. Ground Plane Example
17
Figure 17. Track Routing
18
Figure 18. Track Routing Recommendation
18
Figure 19. Shield
19
Faq
20
Noise
21
Power Supply
21
False Detection
21
Table 14. Power Supply Documentation
21
Table 15. False Detection Documentation
21
Figure 20. Typical Power Supply Schematic
21
Noise Immunity
22
Conducted Noise
22
Table 16. Noise Immunity Documentation
22
Table 17. Conducted Noise Documentation
22
6 Tuning
23
Table 18. Sensors Documentation
23
Table 19. ESD Documentation
23
Table 20. Conducted Noise Documentation
23
Table 21. Sampling Capacitor Documentation
23
7 Getting Started TSC with Stm32Cubemx
24
Uses Cases
24
Figure 21. Main Project Panel
24
Discovery Board: STM32F072B-DISCO
25
STM32F072B-DISCO Board Selection
25
Figure 22. STM32F072B-DISCO Board Selection
25
Figure 23. STM32F072B-DISCO Board Schematics
25
TSC Group and Sensor Activation
27
Figure 24. STM32F072B-DISCO Pinout SWD
27
Figure 25. STM32F072B-DISCO Pinout TSC
27
STM32F072B-DISCO Clock Tree
28
Figure 26. STM32F072B-DISCO Pinout Overview
28
Figure 27. STM32F072B-DISCO Clock Configuration
28
STM32F072B-DISCO Touchsensing Library
29
Figure 28. TOUCHSENSING Box Configuration
29
Figure 29. STM32F072B-DISCO Sensor Selection
29
Figure 30. STM32F072B-DISCO Sensor Selection Step2
30
Figure 31. STM32F072B-DISCO Sensor Selection Step3
30
Figure 32. STM32F072B-DISCO Sensor Selection Step4
31
Figure 33. STM32F072B-DISCO Sensor Selection Step5
31
STM32F072B-DISCO Software Project Generation
32
Figure 34. STM32F072B-DISCO Software Generation Step1
32
Figure 35. STM32F072B-DISCO Software Generation Step2
32
Figure 36. STM32F072B-DISCO Software Generation Step3
33
Figure 37. STM32F072B-DISCO IDE Workspace
33
Software Basic Algorythm
34
Figure 38. STM32F072B-DISCO Setup
35
Discovery Board: STM32L0538-DISCO
36
STM32L0538-DISCO Board Selection
36
Figure 39. STM32L0538-DISCO Board Selection
36
Figure 40. STM32L0538-DISCO Board Schematics
37
STM32L0538-DISCO TSC Group and Sensor Activation
38
Figure 41. Pinout SWD
38
Figure 42. Pinout TSC
38
STM32L0538-DISCO Clock Tree
39
Figure 43. Pinout Overview
39
Figure 44. Clock Configuration
39
STM32L0538-DISCO Touchsensing Library
40
Figure 45. TOUCHSENSING Box Configuration
40
Figure 46. STM32L0538-DISCO Sensor Selection Step1
40
Figure 47. STM32L0538-DISCO Sensor Selection Step2
41
Figure 48. STM32L0538-DISCO Sensor Selection Step3
41
Figure 49. STM32L0538-DISCO Sensor Selection Step4
42
Figure 50. STM32L0538-DISCO Sensor Selection Step5
42
STM32L0538-DISCO Software Project Generation
43
Figure 51. STM32L0538-DISCO Software Generation Step1
43
Figure 52. STM32L0538-DISCO Software Generation Step2
43
STM32L0538-DISCO Software Basic Algorythm
45
Revision History
46
Table 22. Document Revision History
46
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ST STM32L0 Series Application Note (56 pages)
Brand:
ST
| Category:
Microcontrollers
| Size: 3.6 MB
Table of Contents
General Information
2
Table 2. Glossary
2
Overview
5
Security Purpose
5
Figure 1. Corrupted Connected Device Threat
5
Table 3. Assets to be Protected
6
Attack Types
7
Introduction to Attack Types
7
Software Attacks
8
Table 4. Attacks Types and Costs
8
Hardware Attacks
9
Non-Invasive Attacks
10
Silicon Invasive Attacks
11
Iot System Attack Examples
12
Figure 2. Iot System
12
List of Attack Targets
13
Device Protections
16
Configuration Protection
16
Trustzone ® for Armv8-M Architecture
16
Dual-Core Architecture
17
Figure 3. Armv8-M Trustzone® Execution Modes
17
Figure 4. Simplified Diagram of Dual-Core System Architecture
17
Memory Protections
18
Figure 5. Memory Types
18
System Flash Memory
19
User Flash Memory
19
Embedded SRAM
19
External Flash Memories
20
STM32 Memory Protections
21
Software Isolation
21
Debug Port and Other Interface Protection
21
Boot Protection
22
System Monitoring
22
Secure Applications
23
Secure Firmware Install (SFI)
23
Root and Chain of Trust
23
Stmicroelectronics Proprietary SBSFU Solution
23
Secure Boot (SB)
23
Secure Firmware Update (SFU)
24
Figure 6. Secure Boot FSM
24
Configurations
25
Arm TF-M Solution
25
Figure 7. Secure Server/Device SFU Architecture
25
Product Certifications
26
Table 8. Basic Feature Differences of Trustzone-Based Secure Software
26
STM32 Security Features
27
Overview of Security Features
27
Static and Dynamic Protections
27
Security Features by STM32 Devices
27
Table 10. Security Features for STM32L0/1/4/4+, STM32WB, STM32WL Devices
28
Readout Protection (RDP)
29
Table 11. Security Features for STM32L5, STM32U5, STM32H503/5, Stm32H72X/73/74X/75, Stm32H7Ax/7Bx, STM32F7 Devices
29
Figure 8. Example of RDP Protections (STM32L4 Series)
30
Lifecycle Management-Product State
31
Table 12. RDP Protections
31
One-Time Programmable (OTP)
32
Trustzone
32
Core State
33
Secure Attribution Unit (SAU)
33
Figure 9. Trustzone® Implementation at System Level
33
Memory and Peripheral Protections
34
Flash Memory Write Protection (WRP)
34
Execute-Only Firmware (PCROP)
34
Secure Hide Protection (HDP)
35
Firewall
35
Figure 10. HDP Protected Firmware Access
35
Figure 11. Firewall FSM
36
Figure 12. Firewall Application Example
36
Memory Protection Unit (MPU)
37
Table 13. Attributes and Access Permission Managed by MPU
37
Customer Key Storage (CKS)
38
Table 14. Process Isolation
38
Figure 13. Dual-Core Architecture with CKS Service
38
Antitamper (Tamp)/Backup Registers (BKP)
39
Clock Security System (CSS)
39
Power Monitoring (PVD)
39
Memory Integrity Hardware Check
39
Independent Watchdog (IWDG)
40
Device ID
40
Cryptography
40
Hardware Accelerators
40
Cryptolib Software Library
40
On-The-Fly Decryption Engine (OTFDEC)
41
Figure 14. Typical OTFDEC Configuration
41
Guidelines
42
Table 15. Security Use Cases
42
Conclusion
44
Appendix A Cryptography - Main Concepts
45
Secret Key Algorithms
45
Figure 15. Symmetric Cryptography
45
Public Key Algorithms (PKA)
46
Figure 16. Signature
46
Figure 17. PKA Encryption
46
Hash Algorithms
47
MAC or Signature and Certificate
47
Figure 18. Message Hashing
47
Figure 19. MAC Generation with Secrete Key Algorithm
47
Figure 20. Signature Generation with Public Key Algorithm
48
Revision History
49
Table 1. Applicable Products
49
Table 16. Document Revision History
49
Table 5. Memory Types and Associated Protection
50
Table 6. Scope of STM32 Embedded Memory Protection Features
50
Table 7. Software Isolation Mechanism
50
Table 9. Security Features for STM32C0, STM32F0/1/2/3/4, STM32G0/4 Devices
50
ST STM32L0 Series Application Note (34 pages)
Brand:
ST
| Category:
Microcontrollers
| Size: 0.73 MB
Table of Contents
Table 1. Applicable Products
1
Table of Contents
2
Power Supplies
6
Introduction
6
Figure 1. Power Supply Overview
7
Independent A/D Converter Supply and Reference Voltage
8
Independent LCD Supply (Stm32L0X3 Only)
9
Voltage Regulator
9
Table 2. VLCD Rails Connections to GPIO Pins
9
Power Supply Schemes
11
Figure 2. Power Supply Scheme
11
Reset and Power Supply Supervisor
12
Figure 3. Optional LCD Power Supply Scheme
12
Figure 4. Power Supply Supervisors
13
Power-On Reset (POR) / Power-Down Reset (PDR), Brownout Reset (BOR)
14
Programmable Voltage Detector (PVD)
14
Figure 5. Power on Reset/Power down Reset Waveform
14
Brownout Reset (BOR)
15
Figure 6. PVD Thresholds
15
System Reset
16
Figure 7. Simplified Diagram of the Reset Circuit
16
Clocks
17
MSI Clock
17
HSE OSC Clock
18
External Source (HSE Bypass)
18
External Crystal/Ceramic Resonator (HSE Crystal)
18
Figure 8. External Clock
18
Figure 9. Crystal/Ceramic Resonators
18
LSE OSC Clock
20
External Crystal/Ceramic Resonator (LSE Crystal)
20
External Source (LSE Bypass)
20
Figure 10. External Clock
20
Figure 11. Crystal/Ceramic Resonators
20
Clock Security System on HSE (CSSHSE)
21
HSI16 Clock
21
LSI Clock
21
Boot Configuration
22
Boot Mode Selection
22
Embedded Boot Loader
22
Table 3. Boot Modes
22
BOOT0 Pin Connection
23
Debug Management
24
Introduction
24
SWD Debug Port (Serial Wire)
24
Figure 12. Host-To-Board Connection
24
Pinout and Debug Port Pins
25
Serial Wire Debug (SWD) Pin Assignment
25
SWD Pin Assignment
25
Internal Pull-Up and Pull-Down on SWD Pins
25
SWD Port Connection with Standard SWD Connector
25
Table 4. SWD Port Pins
25
Figure 13. SWD Port Connection
26
Recommendations
27
Printed Circuit Board
27
Component Position
27
Ground and Power Supply (VSS , VDD , VSSA , VDDA )
27
Decoupling
27
Other Signals
28
Figure 14. Typical Layout for V
28
DD /VSS Pair
28
Clock
29
Table 5. Mandatory Components
30
Table 6. Optional Components
30
Figure 15. Reference Design (Based on STM32L053RBT6)
31
Table 7. Reference Connection for All Packages
32
Table 8. Document Revision History
33
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