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参数资料
| 型号： | KIT908EINTFC |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 9/49页 |
| 文件大小： | 0K |
| 描述： | KIT EVAL 908E625 QUAD W/MCU/LIN |
| 标准包装： | 1 |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
17
908E625
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
INTERRUPTS
The 908E625 has seven different interrupt sources as
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
The low voltage interrupt (LVI) is related to the external
supply voltage, VSUP. If this voltage falls below the LVI
threshold, it will set the LVI flag. If the low voltage interrupt is
enabled, an interrupt will be initiated.
With LVI the H-Bridges (high side MOSFET only) and the
high side driver are switched off. All other modules are not
influenced by this interrupt.
During STOP mode the LVI circuitry is disabled.
HIGH VOLTAGE INTERRUPT
The high voltage interrupt (HVI) is related to the external
supply voltage, VSUP. If this voltage rises above the HVI
threshold, it will set the HVI flag. If the high voltage interrupt
is enabled, an interrupt will be initiated.
With HVI the H-Bridges (high side MOSFET only) and the
high side driver are switched off. All other modules are not
influenced by this interrupt.
During STOP mode the HVI circuitry is disabled.
HIGH TEMPERATURE INTERRUPT
The high temperature interrupt (HTI) is generated by the
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.
During STOP mode the HTI circuitry is disabled.
AUTONOMOUS WATCHDOG INTERRUPT (AWD)
Refer to Autonomous Watchdog Autonomous Watchdog
LIN INTERRUPT
If the LINIE bit is set, a falling edge on the LIN pin will
generate an interrupt. During STOP mode this interrupt will
initiate a system wake-up.
HALL-EFFECT SENSOR INPUT PIN INTERRUPT
If the PHIE bit is set, the enabled Hall-effect sensor input
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
OVER-CURRENT INTERRUPT
If an over-current condition on a half-bridge occurs, the
high side or the HVDD output is detected and the OCIE bit is
set and an interrupt generated.
SYSTEM WAKE-UP
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
check via AWD
An LVR condition
If one of these wake-up events occurs and the interrupt
mask bit for this event is set, the interrupt will wake-up the
microcontroller as well as the main voltage regulator (MREG)
(Figure 8).
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