MM908E625ACDWB Freescale Semiconductor, MM908E625ACDWB Datasheet - Page 35

• 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

HALF-BRIDGE OVERTEMPERATURE
PROTECTION
warning with the HTF in the Interrupt Flag Register (IFR). In
order to protect the outputs against overtemperature, the
High-Temperature Reset must be enabled. If this value is
reached, the part generates a reset and disables all power
outputs.
HALF-BRIDGE OVERCURRENT PROTECTION
to VSUP, and load shorts.
the high-side MOSFETs on all HB high-side MOSFETs are
switched off automatically. In the event an overcurrent on the
low side is detected, all HB low-side MOSFETs are switched
off automatically. In both cases the overcurrent status flag
HB_OCF in the System Status Register (SYSSTAT) is set.
enabled) by writing a Logic [1] to the HB_OCF flag in the
System Status Register or by reset.
HALF-BRIDGE OVERVOLTAGE/UNDERVOLTAGE
undervoltage and overvoltage conditions. This protection is
Analog Integrated Circuit Device Data
Freescale Semiconductor
The half-bridge outputs provide an overtemperature pre-
The half-bridges are protected against short to GND, short
In the event an overcurrent on the high side is detected,
The overcurrent status flag is cleared (and the outputs re-
The half-bridge outputs are protected against
1
Figure 20. BEMF Signal Generation
done by the low- and high-voltage interrupt circuitry. If one of
these flags (LVF, HVF) is set, the outputs are automatically
disabled.
(and the outputs re-enabled) by writing a Logic [1] to the LVF/
this flag is useless as long as a high- or low-voltage condition
is present.
HALF-BRIDGE CONTROL REGISTER (HBCTL)
H-Bridge Offset Chopping Enable Bit (OFC_EN)
the OFC_EN bit.
HVF flags in the Interrupt Flag Register or by reset. Clearing
Bits
Reset
Write
Read
The overvoltage/undervoltage status flags are cleared
This read/write bit enables offset chopping. Reset clears
• 1 = Offset chopping enabled
• 0 = Offset chopping disabled
BEMF Signal
Coil Current
Voltage on
OFC_EN
Register Name and Address: HBCTL - $02
7
0
1
CSA
6
0
LOGIC COMMANDS AND REGISTERS
5
0
0
FUNCTIONAL DEVICE OPERATION
4
0
0
3
0
0
CLS2
2
0
CLS1
1
0
908E625
CLS0
0
0
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