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MC10XS3412CHFK Datasheet(PDF) 36 Page - Freescale Semiconductor, Inc

Part No. MC10XS3412CHFK
Description  Quad High Side Switch (Dual 10 mOhm, Dual 12 mOhm)
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Maker  FREESCALE [Freescale Semiconductor, Inc]
Homepage  http://www.freescale.com
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MC10XS3412CHFK Datasheet(HTML) 36 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
36
Freescale Semiconductor
10XS3412
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
Figure 13. Over-current profile depending on Xenon bit
D[7:6] bits allow to MCU to programmable bulb cooling
curve and D[5:4] bits inrush curve for selected output, as
shown Table 16 and Table 17.
A logic [1] on bit D3 (OCHI_s bit) the OCHI1 level is
replaced by OCHI2 during tOC1, as shown Figure 14.
Figure 14. Over-current profile with OCHI bit set to ‘1’
The wire harness is protected by one of four possible
current levels in steady state, as defined in Table 18.
Bit D0 (OC_mode_sel) allows to select the over-current
mode, as described Table 19.
ADDRESS 00101—GLOBAL CONFIGURATION
REGISTER (GCR)
The GCR register allows the MCU to configure the device
through the SPI.
Bit D8 allows the MCU to enable or disable the VDD failure
detector. A logic [1] on VDD_FAIL_en bit allows transitioning
to Fail-safe mode for VDD < VDD(FAIL).
Bit D7 allows the MCU to enable or disable the PWM
module. A logic [1] on PWM_en bit allows control of the
outputs HS[0:3] with PWMR register (the direct input states
are ignored).
Bit D6 (CLOCK_sel) allows to select the clock used as
reference by PWM module, as described in the following
Table 20.
Table 16. Cooling Curve Selection
BC1_s (D7)
BC0_s (D6)
Profile Curves Speed
0
0
medium (default)
0
1
slow
1
0
fast
1
1
medium
Table 17. Inrush Curve Selection
OC1_s (D5)
OC0_s (D4)
Profile Curves Speed
0
0
slow (default)
0
1
fast
1
0
medium
1
1
very slow
IOCH1
tOC5
tOC4
tOC2
tOC1
Time
IOCH2
IOC1
IOC3
IOC4
tOC3
tOC6
tOC7
IOC2
IOCH1
tOC5
tOC4
tOC2
tOC1
IOCH2
IOC1
tOC3
tOC6
tOC7
IOC2
Xenon bit set to logic [1]:
Xenon bit set to logic [0]:
Time
IOCLO4
IOCLO3
IOCLO2
IOCLO1
IOCLO4
IOCLO3
IOCLO2
IOCLO1
Table 18. Output Steady State Selection
OCLO1 (D2) OCLO0 (D1)
Steady State Current
0
0
OCLO2 (default)
0
1
OCLO3
1
0
OCLO4
1
1
OCLO1
Table 19. Over-current Mode Selection
OC_mode_s (D0)
Over-current Mode
0
only inrush current management (default)
1
inrush current and bulb cooling
management
IOCH1
tOC5
tOC4
tOC2
tOC1
Time
IOCH2
IOC1
IOC3
IOC4
tOC3
tOC6
tOC7
IOC2
IOCLO4
IOCLO3
IOCLO2
IOCLO1


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