MM908E621_08 FREESCALE [Freescale Semiconductor, Inc], MM908E621_08 Datasheet - Page 22

• Manufacturer Part Number: MM908E621_08
• Description: Integrated Quad Half-bridge and Triple High Side with Embedded MCU and LIN for High End Mirror
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

EXTERNAL RESET PIN (
startup state.
entire system. It is driven LOW when any internal reset
source is asserted.
activated, even when the reset pin is pulled LOW.
POWER SUPPLY PINS (VSUP1:VSUP8)
nominal input voltage is designed for operation from 12V
systems. Owing to the low ON-resistance and current
requirements of the half-bridge driver outputs and high side
output drivers, multiple VSUP pins are provided.
functionality.
POWER GROUND PINS (GND1:GND4)
Owing to the low ON-resistance and current requirements of
the half-bridge driver outputs and high side output drivers,
multiple pins are provided.
functionality.
HALF-BRIDGE OUTPUT PINS (HB1:HB4)
configured as four half-bridge driver outputs. The HB3:HB4
have a lower R
than the HB1:B2 outputs.
temperature protected, and they feature current recopy.
Over-current protection is done on both high side and low
side FET’s. The current recopy are done on the low side
MOSFETs.
HIGH SIDE OUTPUT PINS (HS1:HS3)
Each HS switch is protected against over-temperature and
over-current. The output is capable of limiting the inrush
current with an automatic PWM or feature a real PWM
capability using the PWM input.
heater), than the HS2 and HS3 outputs.
current capability and have to be connected externally.
loads.
22
908E621
FUNCTIONAL DESCRIPTION
FUNCTIONAL PIN DESCRIPTION
A logic [0] on the
This pin contains an internal pullup resistor that is always
For details refer to the 68HC908EY16 datasheet.
VSUP1:VSUP8 are device power supply pins. The
All VSUP pins must be connected to get full chip
GND1:GND4 are device power ground connections.
GND1 and GND2 pins must be connected to get full chip
The 908E621 device includes power MOSFETs
The HB1:HB4 outputs are short-circuit and over-
The HS output pins are a low R
The HS1 has a lower R
For the HS1 two pins (HS1a:HS1b) are necessary for the
Important: The HS3 can be only used to drive resistive
RST
DS(ON)
is bidirectional, allowing a reset of the
RST
, to run higher currents (e.g. fold motor),
pin forces the MCU to a known
DS(ON)
RST
, to run higher currents (e.g.
)
DS(ON)
high side switches.
HALL-EFFECT SENSOR INPUT PIN (H0)
Hall-effect sensors (2pin or 3pin) or a switch.
ANALOG INPUT PINS (A0, A0CST)
source values. The A0CST intent is to trim the A0 input.
WAKE-UP INPUT PIN (L0)
source for a system wake-up. The input is falling or rising
edge sensitive.
VSUP or GND to avoid parasitic transitions. In Low Power
mode this could lead to random wake-up events.
SWITCHABLE V
resistive loads requiring a regulated 5.0V supply (e.g., 3-pin
Hall-effect sensors or potentiometers). The output is short-
circuit protected.
LIN BUS PIN (LIN)
receiver. It is suited for automotive bus systems and is based
on the LIN bus specification.
+5.0V VOLTAGE REGULATOR OUTPUT PIN (VDD)
stabilize the regulated output voltage. The VDD pin is
intended to supply the embedded microcontroller.
other loads; use the HVDD pin for this purpose. The VDD,
EVDD and VDDA/VREFH pins must be connected together.
VOLTAGE REGULATOR GROUND PIN (VSS)
power ground connections (microcontroller and sensors).
Important: VSS, EVSS and VSSA/VREFL pins must be
connected together.
RESET PIN (
an open drain with pullup resistor and must be connected to
the
INTERRUPT PIN (
indicating errors or wake-up events. It is an open drain with
pullup resistor and must be connected to the
MCU.
The Hall-effect sensor input pin H0 provides an input for
These pins are analog inputs with selectable current
This pin is 40V rated input. It can be used as wake-up
Important: If unused this pin should be connected to
The HVDD pin is a switchable V
The LIN pin represents the single wire bus transmitter and
The VDD pin is needed to place an external capacitor to
Important: The VDD pin should not be used to supply
The VSS pin is the ground pin for the connection of all non-
RST_A
IRQ_A
RST
pin of the MCU.
is the interrupt output pin of the analog die
is the bidirectional reset pin of the analog die. It is
RST_A
DD
IRQ_A
OUTPUT PIN (HVDD)
)
Analog Integrated Circuit Device Data
)
Freescale Semiconductor
DD
output for driving
IRQ
pin of the