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ManualsBrandsSTMICROELECTRONICS ManualsPMICsPMIC - motor controllers Pre-driver - half bridge (2) SPI LQFP 32
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Block diagram and pin description L99H01
10/53 DocID15567 Rev 6
10 DIR
Direction select input for H-bridge control. This input has a pull-down
current.
11 PWM PWM input for H-bridge control. This input has a pull-down current.
12 CSN
Chip select not input: this input is low active and requires CMOS logic
levels. The serial data transfer between L99H01 and microcontroller is
enabled by pulling the input CSN to low-level. This input has a pull-up
current.
13 CLK
Serial clock input: this input controls the internal shift register of the
SPI and requires CMOS logic levels.This input has a pull-down
current.
14 DI
Serial data in: the input requires CMOS logic levels and receives serial
data from the microcontroller. The data is an 8-bit control word and the
most significant bit (MSB, bit 7) is transferred first. This input has a
pull-down current.
15 DO
Serial data out: the diagnosis data is available via the SPI and this
tristate-output. The output remains in tristate, if the chip is not selected
by the input CSN (CSN = high).
16 CSO Current sense amplifier output: V
CC
compatible.
17 CSI1+ Current sense amplifier input: positive input 1, multiplexible.
18 CSI1- Current sense amplifier input: negative input 1, multiplexible.
19 CSI2+ Current sense amplifier input: positive input 2, multiplexible.
20 CSI2- Current sense amplifier input: negative input 2, multiplexible.
21 NC Not connected.
22 TS/ ACT_OFF Thermal sensor interface or external off for all gate drivers.
23 GL2 Gate driver for PowerMOS low-side switch in halfbridge 2.
24 SL2 Source of low-side switch in halfbridge 2.
25 GH2 Gate driver for PowerMOS high-side switch in halfbridge 2.
26 SH2 Source/drain of halfbridge 2.
27 SL1 Source of low-side switch in halfbridge 1.
28 GL1 Gate driver for PowerMOS low-side switch in halfbridge 1.
29 SH1 Source/drain of halfbridge 1.
30 GH1 Gate driver for PowerMOS high-side switch in halfbridge 1.
31 CP Charge pump output.
32 CP2+ Charge pump pin for capacitor 2, positive side.
Table 3. Pin definitions and functions (continued)
Pin Symbol Function