mm908e622 Freescale Semiconductor, Inc, mm908e622 Datasheet - Page 22

• Manufacturer Part Number: mm908e622
• Description: Mm908e622 Integrated Quad Half-bridge, Triple High-side And Ec Glass Driver With Embedded Mcu And Lin For High End Mirror
• Manufacturer: Freescale Semiconductor, Inc

EXTERNAL RESET TERMINAL (
startup state.
entire system. It is driven LOW when any internal reset
source is asserted.
always activated, even when the reset terminal is pulled
LOW.
POWER SUPPLY TERMINALS (VSUP1:VSUP8)
nominal input voltage is designed for operation from 12 V
systems. Owing to the low ON-resistance and current
requirements of the half-bridge driver outputs and high-side
output drivers, multiple VSUP terminals are provided.
functionality.
POWER GROUND TERMINALS (GND1:GND4)
Owing to the low ON-resistance and current requirements of
the half-bridge driver outputs and high-side output drivers,
multiple terminals are provided.
chip functionality.
HALF-BRIDGE OUTPUT TERMINALS (HB1:HB4)
configured as four half-bridge driver outputs. The HB3:HB4
have a lower R
than the HB1:B2 outputs.
overtemperature 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 TERMINALS (HS1:HS3)
switches. Each HS switch is protected against
overtemperature and overcurrent. 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.
the current capability and have to be connected externally.
loads.
22
908E622
Functional Description
Functional Terminal Description
A logic [0] on the
This terminal contains an internal pullup resistor that is
For details refer to the 68HC908EY16 datasheet.
VSUP1:VSUP8 are device power supply terminals. The
All VSUP terminals must be connected to get full chip
GND1:GND4 are device power ground connections.
GND1 and GND2 terminals must be connected to get full
The 908E622 device includes power MOSFETs
The HB1:HB4 outputs are short-circuit and
The HS output terminals are a low R
The HS1 has a lower R
For the HS1 two terminals (HS1a:HS1b) are necessary for
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),
terminal forces the MCU to a known
DS(ON)
, to run higher currents (e.g.
RST
DS(ON)
)
high-side
EC GLASS TERMINALS (ECR, EC)
function on EC glass mirrors. The ECR terminal is used to
connect an external ballast resistor. The EC terminal
provides the mirror with an regulated output voltage up to
1.4V. The output voltage can be selected by an integrated DA
converter.
HALL-EFFECT SENSOR INPUT TERMINAL (H0)
for Hall-effect sensors (2pin or 3pin) or a switch.
ANALOG INPUT TERMINALS (A0, A0CST)
source values. The A0CST is intent to trim the A0 input.
WAKE-UP INPUT TERMINAL (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 5.0 V supply; e.g.,
3-terminal Hall-effect sensors or potentiometers. The output
is short-circuit protected.
LIN BUS TERMINAL (LIN)
transmitter and receiver. It is suited for automotive bus
systems and is based on the LIN bus specification.
+5.0 V VOLTAGE REGULATOR OUTPUT
TERMINAL (VDD)
to stabilize the regulated output voltage. The VDD terminal is
intended to supply the embedded microcontroller.
supply other loads; use the HVDD terminal for this purpose.
The VDD, EVDD and VDDA/VREFH terminals must be
connected together.
VOLTAGE REGULATOR GROUND TERMINAL
(VSS)
of all non-power ground connections (microcontroller and
sensors). Important VSS, EVSS and VSSA/VREFL
terminals must be connected together.
These terminals are used to drive the electrochrome
The Hall-effect sensor input terminal H0 provides an input
These terminals are analog inputs with selectable current
This terminal is 40V rated input. It can be used as wake-up
Important: If unused this terminal should be connected to
The HVDD terminal is a switchable V
The LIN terminal represents the single-wire bus
The VDD terminal is needed to place an external capacitor
Important The VDD terminal should not be used to
The VSS terminal is the ground terminal for the connection
DD
OUTPUT TERMINAL (HVDD)
Analog Integrated Circuit Device Data
Freescale Semiconductor
DD
output for driving