DA7282 datasheet(4/75 Pages) RENESAS

4 / 75 page

LRA/ERM Ultra-Low Power Haptic Driver with Multiple Input Triggers and Integrated Waveform Memory

R15DS0041EE0330 Rev.3.30

June 16, 2026

CFR0011-120-00

Page 4

6.7.3

Initial Impedance Update ...................................................................................................... 33

6.7.4

Amplitude PID ....................................................................................................................... 34

6.7.5

Wideband Operation ............................................................................................................. 34

6.7.6

Custom Waveform Operation................................................................................................ 34

6.7.7

Embedded Operation ............................................................................................................ 35

6.7.8

Polarity Change Reporting for Half-Period Control in DRO Mode ........................................ 36

6.7.9

Loop Filter Configuration....................................................................................................... 37

6.7.10

UVLO Threshold.................................................................................................................... 38

6.7.11

Edge Rate Control................................................................................................................. 38

6.7.12

Double Output Current Range .............................................................................................. 38

6.7.13

Supply Monitoring, Reporting, and Automatic Output Limiting ............................................. 38

6.7.14

BEMF Fault Limit................................................................................................................... 39

6.7.15

Increasing Impedance Detection Accuracy........................................................................... 39

6.7.16

Frequency Pause during Rapid Stop .................................................................................... 39

6.7.17

Frequency Pause during Rapid Stop .................................................................................... 39

6.7.18

Coin ERM Operation ............................................................................................................. 39

6.7.19

VDDIO Pin Control ................................................................................................................ 40

6.8

Waveform Memory .............................................................................................................................. 41

6.8.1

Waveform Memory Structure ................................................................................................ 41

6.8.2

Snippet Definition .................................................................................................................. 42

6.8.3

Frame Definition .................................................................................................................... 43

6.8.4

Sequence Definition .............................................................................................................. 45

6.9

General Data Format ........................................................................................................................... 47

6.9.1

DRO Mode ............................................................................................................................ 48

6.9.2

PWM Mode............................................................................................................................ 49

6.9.3

RTWM and ETWM Modes .................................................................................................... 49

6.10 I2C Control Interface ............................................................................................................................ 50

Register Overview ....................................................................................................................................... 53

7.1

Register Map ....................................................................................................................................... 53

7.2

Register Descriptions........................................................................................................................... 55

7.2.1

Register SNP_MEM_xx ........................................................................................................ 67

Package Outline Drawings.......................................................................................................................... 68

Moisture Sensitivity Level........................................................................................................................... 70

9.1

WLCSP Handling................................................................................................................................. 70

9.2

Soldering Information........................................................................................................................... 70

10. Ordering Information................................................................................................................................... 71

11. Application Information .............................................................................................................................. 71

12. Layout Guidelines........................................................................................................................................ 72

13. Revision History .......................................................................................................................................... 73

Figures

Figure 1. System diagrams...................................................................................................................................... 2

Figure 2. DA7282 block diagram ............................................................................................................................. 9

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