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L9960 датащи(PDF) 28 Page - STMicroelectronics

номер детали L9960
подробное описание детали  Automotive Single/Dual H-Bridge, SPI programmable DC Brushed Motor Driver
PDF  95 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9960 датащи(HTML) 28 Page - STMicroelectronics

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Functional description
L9960, L9960T
28/95
DS11115 Rev 10
executed by application SW by HWSC/LBIST Trigger bit. If passed the H-bridge switches
to Normal Mode after the first PWM transition.
At point 4 is shown the case, in which a SW reset is enabled by µC, with no impact on
internal POR signal.
Figure 11. POR timing diagram
The SW reset configuration comes into a 2-bit register
Note:
(-) available in positions D10/D9 of the SPI command frame 2.
The SW reset lasts 2-clock periods.
The device goes back to RESET state immediately in case of POR condition on VDD5 or in
case of SW reset.
This reset is asynchronous, with a synchronous release.
After a POR condition on VDD5 or a SW reset, the register bit called “POR” is set to “1”; it is
cleared by read back via SPI.
Once cleared, this bit indicates a further Power On Reset.
Note:
(-) available in the R11 bit position in SPI answer frame 7e.
Table 24. SW reset [1:0]
Bit status
Description
Condition
01
SW reset command
-
All except 01 no action
-
GAPGPS02317
NDIS
driven by
L9960
SW reset
enable by
SW
L9960
STATE
Tri-state
BIST + HWSC : 4.5ms
Reset state (~300us)
time
POR
BIST
trigger by
SW
LBIST+
HWSC
Normal state
Reset state
Tri-state
LBIST+
HWSC
Normal state
300us before the
release of the POR
PWM
DI
Vdd < Vdd_por threshold
1
2
3
4
Table 25. POR status
Bit status
Description
Condition
0
After SPI reading (not submitted to DIAG_CLR_EN)
-
1
after Power On Reset
Default value



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