MM908E626AVDWB Freescale Semiconductor, MM908E626AVDWB Datasheet - Page 26

• Manufacturer Part Number: MM908E626AVDWB
• Description: IC STEPPER MOTOR DRIVER 54-SOIC
• Manufacturer: Freescale Semiconductor
• Type: Stepper Motor Driverr

Specifications of MM908E626AVDWB

• 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 ~ 115°C
• Mounting Type: Surface Mount
• Package / Case: 54-SOIC (7.5mm Width) Exposed Pad, 54-eSOIC, 54-HSOIC
• Product: Stepper Motor Controllers / Drivers
• Operating Supply Voltage: 8 V to 18 V
• Supply Current: 20 mA
• Mounting Style: SMD/SMT
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

HBx_L — Low Side On / Off Bits
Reset clears the HBx_L bits.
HBx_H — High Side On/Off Bits
Reset clears the HBx_H bits.
26
908E626
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
These read / write bits turn on the low side MOSFETs.
• 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
x.
x.
x.
x.
HALF-BRIDGE CURRENT LIMITATION
current feature. This features is realized by a pulse width
modulation on the low side MOSFET. The pulse width
modulation on the outputs is controlled by the FGEN input
and the load characteristics. The FGEN input provides the
PWM frequency, whereas the duty cycle is controlled by the
load characteristics.
PWM is 0.1kHz to 20kHz.
Functionality
selected current limit was detected. The 908E626 offers five
different current limits (refer to
limit values). The low side MOSFET switches on again if a
rising edge on the FGEN input was detected
Each low side MOSFET offers a current limit or constant
The recommended frequency range for the FGEN and the
Each low side MOSFET switches off if a current above the
Analog Integrated Circuit Device Data
Table
Freescale Semiconductor
8, page 30, for current
(Figure
13).