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DRV8889-Q1 Datasheet(PDF) 39 Page - Texas Instruments

Part No. DRV8889-Q1
Description  DRV8889-Q1, DRV8889A-Q1 Automotive Stepper Driver with Integrated Current Sense, 1/256 Micro-Stepping, and Stall Detection
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
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DRV8889-Q1 Datasheet(HTML) 39 Page - Texas Instruments

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(see Figure 7-22). This reset pulse resets any SPI faults and does not affect the status of the charge pump or
other functional blocks.
Figure 7-22. nSLEEP Reset Pulse
Table 7-12 lists a summary of the functional modes.
Table 7-12. Functional Modes Summary
CONDITION
CONFIGURATION
H-BRIDGE
DVDD
Regulator
CHARGE PUMP INDEXER
LOGIC
Sleep mode
4.5 V < VM <
45 V
nSLEEP pin = 0
Disabled
Disbaled
Disabled
Disabled
Disabled
Operating
4.5 V < VM <
45 V
nSLEEP pin = 1
DRVOFF pin = 0
Operating
Operating
Operating
Operating
Operating
Disabled
4.5 V < VM <
45 V
nSLEEP pin = 1
DRVOFF pin = 1
Disabled
Operating
Operating
Operating
Operating
Table 7-13 lists a summary of the diagnostic coverage in various functional modes.
Table 7-13. Diagnostic Coverage in Various Functional Modes
CONDITION
UVLO
CPUV
OCP
OL
OTSD
OTW/UTW
Sleep mode
Disabled
Disbaled
Disabled
Disabled
Disabled
Disabled
Operating, motor is running Enabled
Enabled
Enabled
Enabled
Enabled
Enabled
Operating, motor is held at
a fixed position
Enabled
Enabled
Enabled
Enabled
Enabled
Enabled
Disabled
Enabled
Enabled
Disabled
Disabled
Enabled
Enabled
7.5 Programming
7.5.1 Serial Peripheral Interface (SPI) Communication
The device SPI has full duplex, 4-wire synchronous communication. This section describes the SPI protocol, the
command structure, and the control and status registers. The device can be connected with the MCU in the
following configurations:
• One slave device
• Multiple slave devices in parallel connection
• Multiple slave devices in series (daisy chain) connection
7.5.1.1 SPI Format
The SDI input data word is 16 bits long and consists of the following format:
• 1 read or write bit, W (bit 14)
• 5 address bits, A (bits 13 through 9)
• 8 data bits, D (bits 7 through 0)
The SDO output-data word is 16 bits long and the first 8 bits make up the Status Register (S1). The Report word
(R1) is the content of the register being accessed.
www.ti.com
DRV8889-Q1
SLVSEE9C – APRIL 2020 – REVISED AUGUST 2020
Copyright © 2020 Texas Instruments Incorporated
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Product Folder Links: DRV8889-Q1


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