mm908e626 Freescale Semiconductor, Inc, mm908e626 Datasheet - Page 17

• Manufacturer Part Number: mm908e626
• Description: Integrated Stepper Motor Driver With 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.
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.
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.
LIN INTERRUPT
generate an interrupt.
OVERCURRENT INTERRUPT
output is detected and the OCIE bit is set and an interrupt
generated.
Analog Integrated Circuit Device Data
Freescale Semiconductor
The 908E626 has five different interrupt sources as
The Low-Voltage Interrupt (LVI) is related to the external
With LVI the H-Bridges (high-side MOSFET only) are
The High-Voltage Interrupt (HVI) is related to the external
With HVI the H-Bridges (high-side MOSFET only) are
The High-Temperature Interrupt (HTI) is generated by the
If the LINIE bit is set, a falling edge on the LIN terminal will
If an overcurrent condition on a half-bridge or the HVDD
SUP
SUP
. If this voltage falls below the LVI
. If this voltage rises above the HVI
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
INTERRUPT FLAG REGISTER (IFR)
LINF — LIN FLAG BIT
data line. Clear LINF by writing a logic [1] to LINF. Reset
clears the LINF bit. Writing a logic [0] to LINF has no effect.
HTF — HIGH-TEMPERATURE FLAG BIT
Clear HTF by writing a logic [1] to HTF. If a high-temperature
condition is still present while writing a logic [1] to HTF, the
writing has no effect. Therefore, a high-temperature interrupt
cannot be lost due to inadvertent clearing of HTF. Reset
clears the HTF bit. Writing a logic [0] to HTF has no effect.
LVF — LOW-VOLTAGE FLAG BIT
LVF by writing a logic [1] to LVF. If a low-voltage condition is
still present while writing a logic [1] to LVF, the writing has no
effect. Therefore, a low-voltage interrupt cannot be lost due
to inadvertent clearing of LVF. Reset clears the LVF bit.
Writing a logic [0] to LVF has no effect.
HVF — HIGH-VOLTAGE FLAG BIT
Clear HVF by writing a logic [1] to HVF. If high-voltage
condition is still present while writing a logic [1] to HVF, the
writing has no effect. Therefore, a high-voltage interrupt
cannot be lost due to inadvertent clearing of HVF. Reset
clears the HVF bit. Writing a logic [0] to HVF has no effect.
Reset
Read
Write
This read / write flag is set on the falling edge at the LIN
• 1 = Falling edge on LIN data line has occurred.
• 0 = Falling edge on LIN data line has not occurred since
This read / write flag is set on a high-temperature condition.
• 1 = High-temperature condition has occurred.
• 0 = High-temperature condition has not occurred.
This read / write flag is set on a low-voltage condition. Clear
• 1 = Low-voltage condition has occurred.
• 0 = Low-voltage condition has not occurred.
This read / write flag is set on a high-voltage condition.
• 1 = High-voltage condition has occurred.
• 0 = High-voltage condition has not occurred.
last clear.
Bit 7
0
0
Register Name and Address: IFR - $05
6
0
0
LINF
LOGIC COMMANDS AND REGISTERS
5
0
FUNCTIONAL DEVICE OPERATION
HTF
4
0
LVF
3
0
HVF
2
0
OCF
1
0
908E626
Bit 0
17
0
0