MM908E625ACDWB/R2 Motorola, MM908E625ACDWB/R2 Datasheet - Page 23

• Manufacturer Part Number: MM908E625ACDWB/R2
• Description: Integrated Quad Half H-Bridge with Power Supply / Embedded MCU / and LIN Serial Communication
• Manufacturer: Motorola

Analog Die I/Os
LIN Physical Layer
communication in automotive applications. The LIN physical
layer is designed to meet the LIN physical layer specification.
limitation and thermal shutdown. An internal pullup resistor with
a serial diode structure is integrated, so no external pullup
components are required for the application in a slave node.
The fall time from dominant to recessive and the rise time from
recessive to dominant is controlled. The symmetry between
both slew rate controls is guaranteed.
from external disturbance, guaranteeing communication during
external disturbance.
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 Terminal
the LIN transmitter (see
LIN output is low (dominant state). When TXD is HIGH, the LIN
output MOSFET is turned off. The TXD terminal 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 Terminal
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
layer is disabled. The receiver terminal is still active and able to
detect wake-up events on the LIN bus line.
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.
MOTOROLA ANALOG INTEGRATED CIRCUIT DEVICE DATA
The LIN bus terminal provides a physical layer for single-wire
The LIN driver is a low-side MOSFET with internal current
The LIN terminal offers high susceptibility immunity level
The LIN transmitter circuitry is enabled by setting the PSON
The TXD terminal is the MCU interface to control the state of
The RXD transceiver terminal is the MCU interface, which
During STOP mode operation the transmitter of the physical
If LIN interrupt is enabled (LINIE bit in the Interrupt Mask
Figure
1, page 2). When TXD is LOW,
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
Analog Multiplexer/ADOUT Terminal
ADC of the MCU (see
is used to read seven 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: 5.0 V/2.5 A or
5.0 V/500 mA, respectively. (Refer to
Recopy on page
Analog Input PA1
multiplexer, permitting analog values from the periphery to be
read.
Temperature Sensor
sensor offers a voltage that is proportional to the actual chip
junction temperature.
V
the external supply voltage. The output of this voltage is V
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.
RATIO
Reset
Read
Write
SUP
The ADOUT terminal is the analog output interface to the
The analog multiplexer is connected to the four low-side
The analog input PA1 is directly connected to the analog
The 908E625 includes an on-chip temperature sensor. This
The V
The different internal diagnostic analog voltages can be
These read/write bits select the input to the ADC in the
Prescaler
VSUP
SUP
Bit7
0
0
Register Name and Address: ADMUX - $07
.
prescaler permits the reading or measurement of
31.)
6
0
0
Figure
5
0
0
Table
1, page 2). An analog multiplexer
4
0
0
2, page 24. Reset clears
SS3
3
0
Half-Bridge Current
SS2
2
0
SS1
1
0
908E625
Bit0
SS0
SUP
0
23
/