Datasheet
Table Of Contents
- General Description
- Key Features
- Applications
- System Diagrams
- Contents
- Figures
- Tables
- Legal
- Product Family
- 1 Terms and Definitions
- 2 Block Diagram
- 3 Pinout
- 4 Characteristics
- 5 Functional Description
- 5.1 Features Description
- Driving LRA and ERM Actuators
- Automatic LRA Resonant Frequency Tracking
- Wideband LRA Support
- I2C and PWM Input Streaming
- Low Latency I2C/GPI Wake-Up from IDLE State
- Three GPI Sequence Triggers for up to Six Independent Haptic Responses
- On-Board Waveform Memory with Amplitude, Time, and Frequency Control
- Active Acceleration and Rapid Stop for High-Fidelity Haptic Feedback
- Continuous Actuator Diagnostics and Fault Handling
- No Software Requirements with Embedded Operation
- Differential Output Drive
- Current Driven System
- Configurable EMI Suppression
- Automatic Short Circuit Protection
- Ultra-Low Power Consumption with State Retention
- Ultra-Low Latency in STANDBY State
- Supply Monitoring, Reporting, and Automatic Output Limiting
- Open- and Closed-Loop Modes
- Open-Loop Sine/Custom Wave Drive Support
- Small Solution Footprint
- Additional Features
- 5.2 Functional Modes
- 5.3 Resonant Frequency Tracking
- 5.4 Active Acceleration and Rapid Stop
- 5.5 Wideband Frequency Control
- 5.6 Device Configuration and Playback
- 5.7 Advanced Operation
- 5.7.1 Frequency Tracking
- 5.7.2 Rapid Stop
- 5.7.3 Initial Impedance Update
- 5.7.4 Amplitude PID
- 5.7.5 Wideband Operation
- 5.7.6 Custom Waveform Operation
- 5.7.7 Embedded Operation
- 5.7.8 Polarity Change Reporting for Half-Period Control in DRO Mode
- 5.7.9 Loop Filter Configuration
- 5.7.10 UVLO Threshold
- 5.7.11 Edge Rate Control
- 5.7.12 Double Output Current Range
- 5.7.13 Supply Monitoring, Reporting, and Automatic Output Limiting
- 5.7.14 BEMF Fault Limit
- 5.7.15 Increasing Impedance Detection Accuracy
- 5.7.16 Frequency Pause during Rapid Stop
- 5.7.17 Frequency Pause during Rapid Stop
- 5.7.18 Coin ERM Operation
- 5.8 Waveform Memory
- 5.9 General Data Format
- 5.10 I2C Control Interface
- 5.1 Features Description
- 6 Register Overview
- 7 Package Information
- 8 Ordering Information
- 9 Application Information
- 10 Layout Guidelines
DA7280
LRA/ERM Haptic Driver with Multiple Input Triggers,
Integrated Waveform Memory and Wideband Support
Datasheet
Revision 3.0
30-Jul-2019
CFR0011-120-00
57 of 76
© 2019 Dialog Semiconductor
Bit
Mode
Symbol
Description
Reset
[6]
RW
E_LIM_DRIVE_ACC
IRQ indicating that acceleration is limited because the power
supply level is lower than required for the acceleration target
(write 1 to E_WARNING to clear)
0x0
[4]
RW
E_MEM_TYPE
Indicates that the memory data type configured in register
MEM_DATA_SIGNED does not match the acceleration
configuration (ACCELERATION_EN).
MEM_DATA_SIGNED = 1 for ACCELERATION_EN = 0
MEM_DATA_SIGNED = 0 for ACCELERATION_EN = 1
(write 1 to E_WARNING to clear)
0x0
[3]
RW
E_OVERTEMP_WARN
Over-temperature warning, chip temperature has exceeded
the warning limit of 105 °C
(write 1 to E_WARNING to clear)
0x0
Table 23: IRQ_EVENT_SEQ_DIAG (0x0005)
Bit
Mode
Symbol
Description
Reset
[7]
RW
E_SEQ_ID_FAULT
IRQ indicating that requested sequence ID configured in
PS_SEQ_ID is not valid
(write 1 to E_SEQ_FAULTto clear)
0x0
[6]
RW
E_MEM_FAULT
Indicates that the Waveform Memory is corrupted (empty,
invalid snippet ID, invalid frame structure)
(write 1 to E_SEQ_FAULTto clear)
0x0
[5]
RW
E_PWM_FAULT
IRQ indicating that the PWM input signal has timed out
(write 1 to E_SEQ_FAULTto clear)
0x0
Table 24: IRQ_STATUS1 (0x0006)
Bit
Mode
Symbol
Description
Reset
[7]
RO
STA_OC
Over-current / short circuit fault status
0x0
[6]
RO
STA_ACTUATOR
Actuator fault status
0x0
[5]
RO
STA_WARNING
System warnings status
0x0
[4]
RO
STA_PAT_FAULT
Sequence faults status
0x0
[3]
RO
STA_OVERTEMP_CRIT
Over-temperature status
0x0
[2]
RO
STA_PAT_DONE
Memory based sequence status
0x0
[1]
RO
STA_UVLO_VBAT_OK
UVLO output status: 0 during normal operation; 1 if there is
a UVLO event
0x0
[0]
RO
STA_SEQ_CONTINUE
Continuous sequence status
0x0
Table 25: IRQ_MASK1 (0x0007)
Bit
Mode
Symbol
Description
Reset
[7]
RW
OC_M
Over-current / short circuit fault mask
0x0
[6]
RW
ACTUATOR_M
Actuator fault mask
0x0
[5]
RW
WARNING_M
System warnings mask
0x0
[4]
RW
SEQ_FAULT_M
Sequence faults mask
0x0
[3]
RW
OVERTEMP_CRIT_M
Over-temperature fault mask
0x0
[2]
RW
SEQ_DONE_M
Memory based sequence interrupt mask
0x0
[1]
RW
E_UVLO_M
Soft shutdown fault mask
0x0