DA7282 datasheet(24/75 Pages) RENESAS

24 / 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 24

Accelerometer Output,

Sensor next to LRA

OUTP/N pins filtered

by a 3kHz RC filter

OUTP/N pins filtered

by a 3kHz RC filter

Accelerometer Output,

Sensor next to LRA

Length of

Desired Effect

Figure 12. Simple drive (top) versus active acceleration and rapid stop enabled (bottom)

6.5

Wideband Frequency Control

DA7282 can be configured for wideband LRA support in DRO, RTWM, and ETWM modes. This allows an

actuator to be driven outside of resonance to create a richer user experience. In this mode frequency tracking,

Active Acceleration, and Rapid Stop features should be disabled. The accessible frequency range becomes 25

Hz to 1000 Hz. After configuring the device, see Section 6.6, the following applies:

In DRO mode, streaming is as described in Section 6.2.4. To change output frequency, a new value is uploaded

to LRA_PER_H and LRA_PER_L.

In RTWM or ETWM modes, the frequency information is encoded into the frames of a sequence, see Section

6.8.3. For information on sequence playback, see Section 6.6. If a repeatable frequency is required at the start of

a sequence, the first frame of a sequence must contain frequency information.

6.6

Device Configuration and Playback

Minimal one-time setup is required to drive any given actuator. This consists of setting the chosen actuator type

with its key parameters and selecting the drive mode. The Renesas SmartCanvas GUI automatically calculates

the values required and sets the registers based on the entered actuator datasheet parameters. If the Renesas

SmartCanvas GUI is not used, follow the steps outlined in this section.

6.6.1

Boot

DA7282 comes out of reset when a power supply is provided to the device and boots for 1.5 ms. This is followed

by entry to the Inactive mode where the device is kept in its lowest power state.

DA7282 Datasheet(PDF) 24 Page - Renesas Technology Corp