Datasheet

DRV2605
SLOS825B –DECEMBER 2012–REVISED JANUARY 2014 www.ti.com
Auto Calibration Memory Interface (Address: 0x1E)
Bit 7 6 5 4 3 2 1 0
Function AutoCalTime[1] AutoCalTime[0] OTP_Status OTP_Program
Type R/W R/W RO R/W
Default 1 0 0 0
AutoCalTime [1:0] Sets the length of the auto calibration time. This should be enough time for the motor
acceleration to settle when driven at the RatedVoltage[7:0] value.
0: 150 ms (min), 350 ms (max)
1: 250 ms (min), 450 ms (max)
2: 500 ms (min), 700 ms (max), Default
3: 1000 ms (min), 1200 ms (max)
OTP_Status OTP Memory has been programmed
OTP_Program Launches the One-Time Programmable (OTP) Memory programming process, which
programs the contents of register 0x16 through 0x1A into non-volatile memory. This
process can only be executed one time per device. See “Auto Calibration Memory”
section for further details.
VBAT Voltage Monitor (Address: 0x21)
Bit 7 6 5 4 3 2 1 0
Function VBAT[7] VBAT[6] VBAT[5] VBAT[4] VBAT[3] VBAT[2] VBAT[1] VBAT[0]
Type R/W R/W R/W R/W R/W R/W R/W R/W
Default 0 0 0 0 0 0 0 0
VBAT[7:0] Gives a real time reading of the supply voltage at the VDD terminal. Device must be actively
sending a waveform to take a reading.
VDD (V) = VBAT[7:0] × 5.6V / 255
LRA Resonance Period (Address: 0x22)
Bit 7 6 5 4 3 2 1 0
Function LRA_Period[7] LRA_Period[6] LRA_Period[5] LRA_Period[4] LRA_Period[3] LRA_Period[2] LRA_Period[1] LRA_Period[0]
Type R/W R/W R/W R/W R/W R/W R/W R/W
Default 0 0 0 0 0 0 0 0
LRA_Period[7:0] Reports the measurement of the LRA resonance period. Device must be actively sending a
waveform to take a reading.
LRA Period (us) = LRA_Period[7:0] × 98.46 µs
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