mm908e625 Freescale Semiconductor, Inc, mm908e625 Datasheet - Page 17

• Manufacturer Part Number: mm908e625
• Description: Integrated Quad Half H-bridge With Power Supply, Embedded Mcu, And Lin Serial Communication
• Manufacturer: Freescale Semiconductor, Inc

INTERRUPTS
described in the following paragraphs. The interrupts can be
disabled or enabled via the SPI. After reset all interrupts are
automatically disabled.
LOW-VOLTAGE INTERRUPT
supply voltage, V
threshold, it will set the LVI flag. If the low-voltage interrupt is
enabled, an interrupt will be initiated.
high-side driver are switched off. All other modules are not
influenced by this interrupt.
HIGH-VOLTAGE INTERRUPT
supply voltage, V
threshold, it will set the HVI flag. If the High-Voltage Interrupt
is enabled, an interrupt will be initiated.
high-side driver are switched off. All other modules are not
influenced by this interrupt.
HIGH-TEMPERATURE INTERRUPT
on-chip temperature sensors. If the chip temperature is
above the HTI threshold, the HTI flag will be set. If the High-
Temperature Interrupt is enabled, an interrupt will be
initiated.
Analog Integrated Circuit Device Data
Freescale Semiconductor
The 908E625 has seven different interrupt sources as
The Low-Voltage Interrupt (LVI) is related to the external
With LVI the H-Bridges (high-side MOSFET only) and the
During STOP mode the LVI circuitry is disabled.
The High-Voltage Interrupt (HVI) is related to the external
With HVI the H-Bridges (high-side MOSFET only) and the
During STOP mode the HVI circuitry is disabled.
The High-Temperature Interrupt (HTI) is generated by the
During STOP mode the HTI circuitry is disabled.
SUP
SUP
. If this voltage falls below the LVI
. If this voltage rises above the HVI
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
AUTONOMOUS WATCHDOG INTERRUPT (AWD)
(AWD) on page
LIN INTERRUPT
generate an interrupt. During STOP mode this interrupt will
initiate a system wake-up.
HALL-EFFECT SENSOR INPUT PIN INTERRUPT
pins H1:H3 can generate an interrupt if a current above the
threshold is detected. During STOP mode this interrupt,
combined with the cyclic wake-up feature of the AWD, can
wake up the system. Refer to pin
Pins
OVERCURRENT INTERRUPT
high-side or the HVDD output is detected and the OCIE bit is
set and an interrupt generated.
SYSTEM WAKE-UP
mask bit for this event is set, the interrupt will wake-up the
microcontroller as well as the main voltage regulator (MREG)
(Figure
Refer to Autonomous Watchdog
If the LINIE bit is set, a falling edge on the LIN pin will
If the PHIE bit is set, the enabled Hall-Effect Sensor input
If an overcurrent condition on a half-bridge occurs, the
System wake-up can be initiated by any of four events:
• A falling edge on the LIN pin
• A wake-up signal from the AWD
• A Logic [1] at Hall-effect sensor input pin during cyclic
• An LVR condition
If one of these wake-up events occurs and the interrupt
check via AWD
(H1:H3).
8).
39.
FUNCTIONAL DEVICE OPERATION
Hall-Effect Sensor Input
Autonomous Watchdog
OPERATIONAL MODES
908E625
17