MM908E625ACDWB Freescale Semiconductor, MM908E625ACDWB Datasheet - Page 30

• Manufacturer Part Number: MM908E625ACDWB
• Description: IC QUAD HALF BRDG MCU/LIN 54SOIC
• Manufacturer: Freescale Semiconductor

Specifications of MM908E625ACDWB

• Applications: Automotive Mirror Control
• Core Processor: HC08
• Program Memory Type: FLASH (16 kB)
• Controller Series: 908E
• Ram Size: 512 x 8
• Interface: SCI, SPI
• Number Of I /o: 13
• Voltage - Supply: 8 V ~ 18 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 54-SOIC (0.300", 7.50mm Width) Exposed Pad
• Program Memory Size: 16 KB
• Number Of Programmable I/os: 54
• Number Of Timers: 16
• Operating Supply Voltage: - 18 V to + 28 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Interrupts
capable. How and when an interrupt occurs is dependent on
the operating mode, RUN or Stop.
RUN Mode
flag (HPF) will be set if a state change on the hallflags (HxF)
is detected. The interrupt is maskable with the HPIE bit in the
Interrupt Mask Register. Before enabling the interrupt, the
flag should be cleared in order to prevent a wrong interrupt.
STOP Mode
disabled independent of the state of the HxEN flags.
30
908E625
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
The Hall-effect sensor input terminals are interrupt
In RUN mode the Hall-effect sensor input terminal interrupt
In STOP mode the Hall-effect sensor input terminals are
HxEN
HxF
Figure 15. Hall-Effect Sensor Input Terminal Connected to Three-Terminal Hall-Effect Sensor
Circuitry
Sense
V
Hx
GND
CYCLIC WAKE-UP
system. This wake-up function is provided by the cyclic check
wake-up feature of the AWD (Autonomous Watchdog).
is set), the AWD switches on the enabled Hall-effect sensor
terminals periodically. To ensure that the Hall-effect sensor
current is stabilized after switching on, the inputs are sensed
after ~40 µs. If a 1 is detected (I
interrupt mask bit HPIE is set, an interrupt is performed. This
wakes up the MCU and starts the main voltage regulator.
three conditions exist:
The Hall-effect sensor inputs can be used to wake up the
If the cyclic check wake-up feature is enabled (AWDCC bit
The wake-up function via this input is available when all
• The two-terminal Hall-effect sensor input is enabled
• The cyclic wake-up of the AWD is enabled (AWDCC =
• The Hall-effect sensor input terminal interrupt is
(HxEN = 1)
1); see
enabled (HPIE = 1)
GND
Figure 16
Out
Vs
Three-Terminal Hall-Effect Sensor
Analog Integrated Circuit Device Data
Hall sensor
Freescale Semiconductor
> I
HSCT
) and the