MM908E624ACDWB/R Motorola, MM908E624ACDWB/R Datasheet - Page 22

• Manufacturer Part Number: MM908E624ACDWB/R
• Description: TRIPLE HIGH-SIDE SWITCH WITH EMBEDDED MCU AND LIN
• Manufacturer: Motorola

22
908E624
Functional Description
Functional Device Operation
Figure 11. Stop Mode/Wake-Up Procedure
SPI: reason for
From Reset
Command
2x STOP
initialize
interrupt
interrupt
operate
operate
MCU
STOP
SPI:
IRQ
?
high current mode
low current mode
Switch to VREG
Switch to VREG
LIN or L1, L2?
Power Die
Wake Up on
Assert IRQ
ANALOG DIE INPUTS/OUTPUTS
High-Side Output Terminals HS1 and HS2
as relays or lamps. They are protected with overtemperature
and current limit (overcurrent) and include an active internal
clamp circuitry for inductive load drive. Control is done using
the SPI Control register. PWM capability is offered through
the PWMIN input terminal.
the SPI Control register is set and the PWMIN input is HIGH
(refer to
PWMIN must be HIGH and bit HS1ON must be set. The
same applies to the HS2 output.
to the VDD terminal.
Current Limit (Overcurrent) Protection
them against overcurrent and short circuit conditions.
Overtemperature Protection
high-side switches, the faulty switch is turned off and latched
off until the HS1 (or HS2 or HS3) bit is set to “1” in the SPI
Control register. The failure is reported by the HSST bit in the
SPI Control register.
Sleep and Stop Mode
High-Side Output HS3
Hall-effect sensors, or switch pullup resistors. Control is done
using the SPI Control register. No direct PWM control is
possible on this terminal (refer to
Current Limit (Overcurrent) Protection
it against overcurrent and short circuit conditions.
Overtemperature Protection
high-side switches, the faulty switch is turned off and latched
off until the HS3 (or HS1 or HS2) bit is set to “1” in the SPI
Control register. The failure is reported by the HSST bit in the
SPI Control register.
Sleep and Stop Mode
These are two high-side switches used to drive loads such
The high-side switch is turned on if both the HSxON bit in
If no PWM control is required, PWMIN must be connected
These high-side switches feature current limit to protect
If an overtemperature condition occurs on any of the three
In Sleep and Stop modes the high-sides are disabled.
This high-side switch can be used to drive small lamps,
This high-side feature switch feature current limit to protect
If an overtemperature condition occurs on any of the three
In Sleep and Stop mode the high-side is disabled.
Figure
12, page 23). In order to have HS1 on, the
Analog Integrated Circuit Device Data
Figure
Freescale Semiconductor
13, page 23).