MM908E626AVEK Freescale Semiconductor, MM908E626AVEK Datasheet - Page 24

• 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

PSON bit in the System Control Register (SYSCTL). If the
transmitter works in the current limitation region, the LINCL
bit in the System Status Register (SYSSTAT) is set. Due to
excessive power dissipation in the transmitter, software is
advised to monitor this bit and turn the transmitter off
immediately.
TXD Pin
LIN transmitter (see
output is low (dominant state). When TXD is HIGH, the LIN
output MOSFET is turned off. The TXD pin has an internal
pullup current source in order to set the LIN bus in recessive
state in the event, for instance, the microcontroller could not
control it during system power-up or power-down.
RXD Pin
reports the state of the LIN bus voltage. LIN HIGH (recessive
state) is reported by a high level on RXD, LIN LOW (dominant
state) by a low level on RXD.
STOP Mode/Wake-up Feature
physical layer is disabled. The receiver pin is still active and
able to detect wake-up events on the LIN bus line.If LIN
interrupt is enabled (LINIE bit in the Interrupt Mask Register
is set), a falling edge on the LIN line causes an interrupt. This
interrupt switches on the main voltage regulator and
generates a system wake-up.
Analog Multiplexer /ADOUT Pin
of the MCU (see
used to read six internal diagnostic analog voltages.
Current Recopy
current sense circuits of the half-bridges. These sense
circuits offer a voltage proportional to the current through the
low side MOSFET. High or low resolution is selectable: 5.0V /
Current Recopy on page
Temperature Sensor
This sensor offers a voltage that is proportional to the actual
chip junction temperature.
V
of the external supply voltage. The output of this voltage is
V
24
2.5A or 5.0V / 500mA, respectively. (Refer to
908E626
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
SUP
SUP
The LIN transmitter circuitry is enabled by setting the
The TXD pin is the MCU interface to control the state of the
The RXD transceiver pin is the MCU interface, which
During STOP mode operation the transmitter of the
The ADOUT pin is the analog output interface to the ADC
The analog multiplexer is connected to the four low side
The 908E626 includes an on-chip temperature sensor.
The V
/ RATIO
Prescaler
SUP
VSUP
prescaler permits the reading or measurement
Figure
.
Figure
, page 2). An analog multiplexer is
28.)
, page 2). When TXD is LOW, LIN
Half-Bridge
selected with the ADMUX Register.
Analog Multiplexer Configuration Register (ADMUX)
SS3, SS2, SS1, and SS0 — A / D Input Select Bits
microcontroller according to
SS3, SS2, SS1, and SS0 bits.
Table 7. Analog Multiplexer Configuration Register
Power Output Register (POUT)
Reset
Notes
Reset
Read
Write
Read
Write
SS3
16.
The different internal diagnostic analog voltages can be
These read / write bits select the input to the ADC in the
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
This bit must always be set to 0.
Bit 7 6
Bit 7
0
0
Register Name and Address: ADMUX - $07
0
0
SS2
Register Name and Address: P
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
6
0
0
(16)
SS1
5
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
Analog Integrated Circuit Device Data
5
0
0
(16)
4
0
0
SS0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Table
4
0
0
(16)
3
0
0
7, page 24. Reset clears
Freescale Semiconductor
SS3
3
0
Current Recopy HB1
Current Recopy HB2
Current Recopy HB3
Current Recopy HB4
Temperature Sensor
V
OUT
(16)
SUP
2
0
0
SS2
Not Used
Channel
2
0
- $0b
Prescaler
HVDDO
SS1
1
N
0
1
0
Bit 0
Bit 0
SS0
(16)
0
0
0