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L9658 Datasheet(PDF) 22 Page - STMicroelectronics

Part # L9658
Description  Analog output available for resistance
PDF  64 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9658 Datasheet(HTML) 22 Page - STMicroelectronics

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Functional description
L9658
22/64
Doc ID 14219 Rev 3
4.8.4
Serial data input (MOSI, MOSI_A)
MOSI/MOSI_A input takes data from the master processor while chip select is asserted.
The MSB shall be the first bit of each word/byte received on MOSI/MOSI_A and the LSB
shall be the last bit of each word/byte received. This pin has TTL level compatible input
voltages allowing proper operation with microprocessors using a 3.3 to 5.0 V supply.
4.9
Deployment drivers
The on-chip deployment drivers are designed to deliver 1.2 A (min) at 6.9 V VRES.
Deployment current is be 1.2 A (min) for 2 ms (min). The high side driver survives
deployment with 1.47 A, 35 V at VRES and SQL is shorted to ground for 2.5ms. Minimum
load resistance is 1.7. At the end of a deployment, a deploy success flag is asserted via SPI.
Each VRES and GND connection are used to accommodate 8 loops that can be deployed
simultaneously.
Upon receiving a valid deployment condition, the respective SQH and SQL drivers are
turned on. SQH and SQL drivers are also turned on momentarily during a MOS diagnostic.
Otherwise, SQH and SQL are inactive under any normal, fault, or transient conditions. Upon
a successful deployment of the respective SQH and SQL drivers, a deploy command
success flag is asserted via SPI. Refer to "deployment sequence" figure for the valid
condition and the deploy success flagh timing.
Figure 10.
Deployment drivers diagram
iref
DEPEN
vbuck8
spi
SQH0
SQL0
VRES0
SQH1
SQL1
SQH5
SQL5
SQH4
SQL4
VRES4
SQH2
SQL2
L S D
H S D
Isense
Isense
Diagnostic
SQH3
SQL3
L S D
H S D
Isense
Isense
Diagnostic
SQH7
SQL7
L S D
H S D
Isense
Isense
Diagnostic
SQH6
SQL6
L S D
H S D
Isense
Isense
ARM45
Diagnostic
L S D
H S D
Isense
Isense
Diagnostic
L S D
H S D
Isense
Isense
Diagnostic
L S D
H S D
Isense
Isense
Diagnostic
L S D
H S D
Isense
Isense
Diagnostic
GND0
GND4
arm01
arm23
arm45
arm67
Logic
ARM67
ARM01
ARM23
por
VRES2
test
VRES3
VRES6
VRES7
GND2
GND3
GND6
GND7
GND1
GND5
VRES1
VRES5
AOUT



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