Texas Instruments DRV8846, Руководство пользователя

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Introduction
Figure 1. Connections
2.2 Test Points
A 0.100 in pitch header connector (J4) is used to provide access to every device signal in the event a
different microcontroller is to be employed. To disconnect the internal MSP430 microcontroller, remove
resistor packs R5 and R6.
Table 1 describes the connections available on the J4 header. Each header pin
is labeled on the evaluation module, and matches the pin of the DRV8846.
Table 1. Descriptions of the Connections Available on the J4 Header
Header Label Description
V3P3R 3.3 V after 33-
Ω
resistor
nFAULT Fault output
nSLEEP Sleep Mode input
RSVD Adaptive DECay input
DIR Direction input
nENBL Stepper motor enable
STEP Step input
M0 Step mode
M1 Step mode
TOFF_SEL Off-time selection
VREF Scale voltage to set IFS
VINT Internal supply voltage
I0 Torque (current level)
I1 Torque (current level)
DEC0 Decay mode
DEC1 Decay mode
GND Ground
GND Ground
3 SLLU203A – June 2014 – Revised March 2015 DRV8846 Evaluation Module
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