DRV2603ERM Datasheet, PDF (10/28 Pages) Texas Instruments – DRV2603 ERM/LRA Haptic Driver Evaluation Kit

Hardware Configuration
3.5 Enable Pin Source
MSP430
P3.1
PWM
JP1
P3.0
EN PWM
R8
VDD
R2
R1
R3
DRV2603
EN
PWM
ERM/LRA
OUT+
GND
VDD
OUT-
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Figure 10. External Enable
The enable pin on the DRV2603 is controlled by the MSP430. To use an external control source or GPIO
there are two options.
Using the Additional Hardware Modes in the MSP430 firmware, select "Mode 5" which will Hi-Z the
MSP430 I/O enable control pin so it does not interfere with the external enable control source.
1. Enter Additional Hardware Modes by holding the "+" button until the actuator buzzes and the mode
LEDs blink.
2. Select Mode 5 (00101'b) using the increment mode button ("+").
3. Connect the external control source to the EN test point at the top of the board.
4. In Mode 5, press one of the following buttons to Hi-Z the DRV2603 enable (EN) pin.
• B1 - disable Hi-Z mode
• B2 - Hi-Z MSP430 EN pin, select LRA auto-resonance on
• B3 - Hi-Z MSP430 EN pin, select LRA auto-resonance off
• B4 - Hi-Z MSP430 EN pin, select ERM mode
To physically disconnect the MSP430 from the DRV2603 enable pin:
1. Remove resistor R8 which disconnects the MSP430 from the DRV2603.
2. Connect the external control source to the EN test point at the top of the board.
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DRV2603 ERM/LRA Haptic Driver Evaluation Kit
SLOU340A – May 2012 – Revised May 2012
Copyright © 2012, Texas Instruments Incorporated
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