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参数资料
| 型号： | MM908E630CVFC |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | MICROCONTROLLER, QCC44 |
| 封装： | 9 X 9 MM, 1 MM HEIGHT, 0.65 MM PITCH, ROHS COMPLIANT, QFN-44 |
| 文件页数： | 18/48页 |
| 文件大小： | 2299K |
| 代理商： | MM908E630CVFC |
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Analog Integrated Circuit Device Data
Freescale Semiconductor
25
908E630
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
INTERRUPTS
Interrupts are used to signal the microcontroller that a
peripheral needs to be serviced. The interrupts which can be
generated change according to the operating mode. While in
Normal and Normal Request modes the analog die signals
through interrupts special conditions which may require a
MCU die software action. Interrupts are not generated until all
pending wake-up sources are read in ISR (Interrupt Source
Register) register.
While in stop mode, interrupts are used to signal wake-up
events. Sleep mode does not use interrupts, wake-up is
performed by powering-up the MCU die. In Normal/Normal
Request modes the wake-up source can be read by SPI.
The interrupts are signaled to the MCU die by a low logic
level of the IRQ_A pin, which will remain low until the interrupt
is acknowledged by a SPI read. The IRQ_A pin will then be
driven high.
Interrupts are only assert while in Normal, Normal Request
and Stop mode. Interrupts are not generated while the
RST_A pin is low.
Following a list of the interrupt sources in Normal and
Normal Request modes, some of those can be masked by
writing to the SPI - Interrupt Mask Register (IMR).
Low Voltage Interrupt
Signals when the supply line (VS1) voltage drops below
the VSUV threshold (VSUV).
High Voltage Interrupt
Signals when the supply line (VS1) voltage increases
above the VSOV threshold (VSOV).
Over-temperature Prewarning
Signals when the analog die temperature has reached the
pre-shutdown warning threshold. It is used to warn the MCU
die that an over-temperature shutdown in the main 5.0 V
regulator is imminent.
LIN Over-temperature Shutdown / TXD stuck at dominant
/ RXD Short-circuit
All signals faulty conditions in the LIN interface except the
LIN over-current had led to disable the LIN driver. In order to
restart operation, the fault must be removed and
TX must go
to the recessive state.
High Side Over-temperature Shutdown
Signals a shutdown in the high side outputs.
Low Side Over-temperature Shutdown
Signals a shutdown in the low side outputs.
RESET
To reset the MCU die the analog die drives low the RST_A
pin for the time the reset condition lasts.
After the reset source has been removed the state
machine will drive the RST_A output low for at least 1.0ms
typical value before driving it high.
Table 6. Operating Modes Overview
Function
Reset Mode Normal Request Mode
Normal
Mode
Stop Mode
Sleep Mode
VDD
Full
Stop
-
HVDD
-
SPI (53)
SPI
-
LSx
-
SPI/PWM (54)
SPI/PWM
-
HSx
-
SPI/PWM
note (55)
note (56)
Analog Mux
-
SPI
-
Lx
-
Inputs
Wake-up
Current Sense
On
-
LIN
-
Rx-Only
Full/Rx-only Rx-Only/Wake-up
Wake-up
Watchdog
-
150ms (typ.) Timeout
On (57)/Off
-
VSENSE
On
VDD
-
Notes
53.
Operation can be enabled/controlled by SPI.
54.
Operation can be controlled by the PWMIN input.
55.
HSx switches can be configured for cyclic sense operation in Stop mode.
56.
HSx switches can be configured for cyclic sense operation in Sleep mode.
57.
Windowing operation when enabled by an external resistor.
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