MM908E626AVEK Freescale Semiconductor, MM908E626AVEK Datasheet - Page 25

• Manufacturer Part Number: MM908E626AVEK
• Description: IC STEPPER MOTOR DRIVER 54-SOIC
• Manufacturer: Freescale Semiconductor
• Type: Stepper Motor Driverr

Specifications of MM908E626AVEK

• 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
• Supply Current: 20 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

HVDDON — HVDD On Bit
HVDDON bit.
HALF-BRIDGES
output stages. The half-bridges can be used in H-bridge, high
side, or low side configurations.
Half-Bridge Control
general enable of the circuitry is done by setting PSON in the
System Control Register (SYSCTL). HBx_L and HBx_H form
one half-bridge. It is not possible to switch on both MOSFETs
in one half-bridge at the same time. If both bits are set, the
high side MOSFET has a higher priority.
half-bridge being on at the same time, a break-before-make
circuit exists. Switching the high side MOSFET on is inhibited
as long as the potential between gate and V
certain threshold. Switching the low side MOSFET on is
Analog Integrated Circuit Device Data
Freescale Semiconductor
This read/write bit enables HVDD output. Reset clears the
• 1 = HVDD enabled.
• 0 = HVDD disabled.
Outputs HB1 : HB4 provide four low resistive half-bridge
Each output MOSFET can be controlled individually. The
To avoid both MOSFETs (high side and low side) of one
Control
Current
On/Off
Status
On/Off
Status
BEMF
Figure 12. Half-bridge Push-Pull Output Driver
Limit
SS
is not below a
Overtemperature Protection,
Overcurrent Protection
Overcurrent Protection
High-Side Driver
Low-Side Driver
Current Limitation,
Current Recopy,
Charge Pump,
(HBOUT) owing to the fact that all half-bridge outputs are
switched off.
blocked as long as the potential between gate and source of
the high side MOSFET did not fall below a certain threshold.
Half-bridge Output Register (HBOUT)
Reset
Read
Write
Reset clears all bits in the H-bridge Output Register
HB1: HB4 output features:
• Short circuit (over-current) protection on high side and
• Current recopy feature (low side MOSFET).
• Over-temperature protection.
• Over-voltage and under-voltage protection.
• Current limitation feature (low side MOSFET).
low side MOSFETs.
HB4
Bit 7
H
0
Register Name and Address: HBOUT - $01
_
HB4
6
L
0
_
HB3
H
5
0
_
FUNCTIONAL DEVICE OPERATION
HB3
4
L
0
_
VSUP
GND
HB2
3
H
0
OPERATIONAL MODES
_
HB2
2
L
0
_
HB1
H
1
0
_
908E626
HBx
HB1
Bit 0
L
0
25
_