MM908E625ACDWB Freescale Semiconductor, MM908E625ACDWB Datasheet - Page 33

• 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

Reset clears the HBx_H bits.
HALF-BRIDGE CURRENT LIMITATION
current feature. This features is realized by a pulse width
High-Side On/Off Bits (HBx_H)
Analog Integrated Circuit Device Data
Freescale Semiconductor
Low-Side Output
• 1 = Low-side MOSFET turned on for half-bridge output
• 0 = Low-side MOSFET turned off for half-bridge output
These read/write bits turn on the high-side MOSFETs.
• 1 = High-side MOSFET turned on for half-bridge output
• 0 = High-side MOSFET turned on for half-bridge output
Each low-side MOSFET offers a current limit or constant
Coil Current
(MCU PWM
FGEN Input
Half-Bridge
x
x
x
x
Signal)
Minimum 50 µs
Figure 18. Half-Bridge Current Limitation
modulation on the low-side MOSFET. The pulse width
modulation on the outputs is controlled by the FGEN input
PWM frequency, whereas the duty cycle is controlled by the
load characteristics.
PWM is 0.1 kHz to 20 kHz.
Functionality
selected current limit was detected. The 908E625 offers five
different current limits. Refer to
values. The low-side MOSFET switches on again if a rising
edge on the FGEN input was detected
and the load characteristics. The FGEN input provides the
The recommended frequency range for the FGEN and the
Each low-side MOSFET switches off if a current above the
LOGIC COMMANDS AND REGISTERS
FUNCTIONAL DEVICE OPERATION
Table 10
H-Bridge low-side
MOSFET will be switched
off if select current limit is
reached.
H-Bridge low-side
MOSFET will be turned on
with each rising edge of
the FGEN input.
(Figure
for current limit
18).
t
t
t
908E625
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