MM908E622ACDWBR2 FREESCALE [Freescale Semiconductor, Inc], MM908E622ACDWBR2 Datasheet - Page 35

• Manufacturer Part Number: MM908E622ACDWBR2
• Description: Integrated Quad Half-bridge, Triple High Side and EC Glass Driver with Embedded MCU and LIN for High End Mirror
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Current Coded Hallsensor Input
corresponding H0MS bit in the H0/L0 Status and Control
Register (HLSCTL) is set. In this mode, the pin current to
GND is monitored by a special sense circuitry. Setting the
H0EN bit in the H0/L0 Status and Control Register, switches
the output to VSUP and enables the sense circuitry. The
result of the sense operation is given by the H0F flag. The
flag is low if the sensed current is higher than the sense
current threshold I
protected (current limitation) against a short circuit to GND.
Analog Integrated Circuit Device Data
Freescale Semiconductor
H0 is selected as “2 pin hallsensor input”, if the
H0EN
H0F
H0F
HSCT
. In this configuration, the HO pin is
VSUP
Figure 18. General Purpose / Hall-effect Sensor Input (H0)
Current
Sense
H0EN
V
Figure 19. H0 Used as 2-Pin Hallsensor Input
H0MS
H0PD
H0EN
H0
GND
10k
needs some time to stabilize the output. In RUN mode, the
software has to take care about waiting for a few µs (40)
before sensing the hallflags.
current (short to GND), the hallport over-current flag
(H0OCF) is set and the current is limited. For proper
operation of the current limitation, an external capacitor
(>100nF) close to the H0 pin is required.
>0.1uF
Current
Sense
After switching on the hallport (H0EN = “1”), the hallsensor
The hallport output current is sensed. In case of an over-
VSUP
VDD
2 pin hall sensor
H0MS
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
H0
908E622
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