Ultra-Low Power LRA Haptic Driver with Multiple Input Triggers and Software-Free Operation

R15DS0040EE0320 Rev.3.20

June 16, 2026

CFR0011-120-00

Page 14

6.2.2

Playback via Edge Triggering

DA7283 playback is triggered by a negative edge provided to any of the three device GPIs. Their configuration is

summarized in Table 11. When a sequence finishes, the device automatically goes to the low power IDLE state

and honors any subsequent playback requests, see Figure 6.

Table 11. GPI drive level behavior

GPI

Drive level

Duration

Sequence description

GPI_0

1.8 VRMS

25 ms drive, 10 ms brake, 20 ms silence

Click effect

GPI_1

1.8 VRMS

60 seconds drive

Maximum strength, buzz effect

GPI_2

1 VRMS

60 seconds drive

Medium strength, buzz effect

The majority of LRAs are rated at 1.2 VRMS or in the range of 1.8 VRMS to 2.5 VRMS. Table 12 shows the

recommended triggers for the two ranges. If more sophisticated features are needed, use the I2C controlled

DA7280, DA7281, and DA7282 devices.

Table 12. GPI trigger ranges

LRA rating (VRMS)

GPI triggers to use

Comments

1.2

GPI_2 only

GPI_0 and GPI_2 drive above the 1.2 VRMS rating.

They may be used only for short time periods at the system designer

discretion.

1.8 to 2.5

GPI_0, GPI_1, GPI_2

Any GPI trigger may be used

GPI_0

Signal Across LRA

GPI_0 Triggered Playback

0.75 ms 25 ms 10 ms

1.8 VRMS

Minimum pulse length 25 µs

GPI_1

Signal Across LRA

GPI_1 Triggered Playback

0.75 ms

60 s

Minimum pulse length 25 µs

Drive

Brake

Startup

...

...

GPI_2

Signal Across LRA

GPI_2 Triggered Playback

0.75 ms

60 s

Minimum pulse length 25 µs

...

...

1.8 VRMS

1 VRMS

Figure 6. Simple GPI behavior