Cypress CapSense CY8CMBR2044 Controller Manuals

Cypress CapSense CY8CMBR2044 Controller Manuals

Manuals and User Guides for Cypress CapSense CY8CMBR2044 Controller. We have 1 Cypress CapSense CY8CMBR2044 Controller manual available for free PDF download: Design Manual

Cypress CapSense CY8CMBR2044 Design Manual

Cypress CapSense CY8CMBR2044 Design Manual (50 pages)

Brand: Cypress | Category: Controller | Size: 1 MB

Table of Contents

Table of Contents
3
1 Introduction

5
2 Capsense Technology

10
- Capsense Fundamentals
  10
- Capacitive Sensing Method
  11
  - Capsense Sigma-Delta (CSD)
    11
- Smartsense Auto-Tuning
  13
  - Process Variation
    13
  - Reduced Design Cycle Time
    13
3 Capsense Schematic Design

15
- CY8CMBR2044 Configuration Options
  15
  - Capsense Buttons (Csx)
    15
  - General-Purpose Outputs (Gpox)
    15
  - Modulation Capacitor
    15
  - Mod )
    15
  - Button Auto Reset (ARST)
    16
  - Toggle ON/OFF
    16
  - Flanking Sensor Suppression (FSS)
    17
  - LED on Time
    18
  - System Diagnostics
    19
  - Scan Rate/Sleep
    21
  - Serial Debug Data out
    22
- Design Toolbox
  25
4 Electrical and Mechanical Design Considerations

30
- Overlay Selection
  30
  - Bonding Overlay to PCB
    31
- ESD Protection
  31
  - Prevent
    31
  - Redirect
    31
  - Clamp
    31
- Electromagnetic Compatibility (EMC) Considerations
  32
  - Radiated Interference
    32
  - Conducted Immunity and Emissions
    32
- PCB Layout Guidelines
  32
5 Low-Power Design Considerations

33
- System Design Recommendations
  33
- Calculating Average Power
  33
  - Button Scan Rate (T )
    33
  - Ave_Nt
    33
  - Ave_Sa
    33
  - Scan Time (T )
    34
  - Average Current in no TOUCH State (I )
    35
  - Ave_T )
    35
  - Average Standalone Current (I )
    35
  - Average Current (IAVE )
    35
  - Average Power (PAVE )
    36
  - Example Calculation
    36
- Sleep Modes
  37
  - Low-Power Sleep Mode
    37
  - Deep Sleep Mode
    37
6 Resources

38
- Website
  38
- Datasheet
  38
- Design Toolbox
  38
- Multi-Chart
  38
- Design Support
  39
7 Appendix

40
- Schematic Example
  40
  - Schematic 1: Four Buttons with Four Gpos
    40
  - Schematic 2: Three Buttons with Advanced Features Enabled
    42
- Acronyms
  43
Glossary

44
Revision History

50
- Document Revision History
  50

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