mm908e626 Freescale Semiconductor, Inc, mm908e626 Datasheet - Page 14

• Manufacturer Part Number: mm908e626
• Description: Integrated Stepper Motor Driver With Embedded Mcu And Lin Serial Communication
• Manufacturer: Freescale Semiconductor, Inc

highly integrated and cost-effective solution for automotive
and industrial applications. For automotive body electronics,
the 908E626 is well suited to perform stepper motor control,
e.g. for climate or light-levelling control via a 3-wire LIN bus.
(68HC908EY16) with flash memory together with a
SMARTMOS IC chip. The SMARTMOS IC chip combines
power and control in one chip. Power switches are provided
on the SMARTMOS IC configured as four half-bridge
terminals referred to in the following paragraphs. Also, see
the terminal diagram on
terminal locations on the package.
PORT A I /O TERMINALS (PTA0:4)
terminals that are shared with other functional modules in the
MCU. PTA0 : PTA4 are shared with the keyboard interrupt
terminals, KBD0 : KBD4.
and is internally connected to the SPI clock terminal of the
analog die. The PTA6/
PORT B I/O TERMINALS (PTB1, PTB3:7)
terminals that are shared with other functional modules in the
MCU. All terminals are shared with the ADC module. The
PTB6 : PTB7 terminals are also shared with the Timer B
module.
of the analog die, allowing diagnostic measurements to be
calculated; e.g., current recopy, V
terminal is not accessible in this device.
PORT C I/O TERMINALS (PTC2:4)
terminals that are shared with other functional modules in the
MCU. For example, PTC2 : PTC4 are shared with the ICG
module.
device and are internally connected to the MISO and MOSI
SPI terminals of the analog die.
14
908E626
FUNCTIONAL DESCRIPTION
INTRODUCTION
The 908E626 device was designed and developed as a
This device combines an standard HC08 MCU core
See
These terminals are special-function, bidirectional I/O port
The PTA5/SPSCK terminal is not accessible in this device
For details refer to the 68HC908EY16 datasheet.
These terminals are special-function, bidirectional I/O port
PTB0/AD0 is internally connected to the ADOUT terminal
For details refer to the 68HC908EY16 datasheet.
These terminals are special-function, bidirectional I/O port
PTC0/MISO and PTC1/MOSI are not accessible in this
For details refer to the 68HC908EY16 datasheet.
Figures
1, for a graphic representation of the various
SS
Figures 3
terminal is likewise not accessible.
SUP
for a depiction of the
, etc. The PTB2/AD2
FUNCTIONAL TERMINAL DESCRIPTION
FUNCTIONAL DESCRIPTION
INTRODUCTION
outputs. Other ports are also provided including a selectable
HVDD terminal. An internal voltage regulator is provided on
the SMARTMOS IC chip, which provides power to the MCU
chip.
communicates using a single wire. This enables the device to
be compatible with 3-wire bus systems, where one wire is
used for communication, one for battery, and the third for
ground.
PORT D I /O TERMINALS (PTD0:1)
function, bidirectional I /O port terminals that can also be
programmed to be timer terminals.
connected to the BEMF output of the analog die in order to
evaluate the BEMF signal with a special BEMF module of the
MCU.
terminal for generating the FGEN signal (PWM signal) if
required by the application.
PORT E I /O TERMINAL (PTE1)
bidirectional I/O port terminals that can also be programmed
to be enhanced serial communication.
the analog die. The connection for the receiver must be done
externally.
EXTERNAL INTERRUPT TERMINAL (
terminal. This terminal contains an internal pullup resistor that
is always activated, even when the
LOW.
EXTERNAL RESET TERMINAL (
startup state.
entire system. It is driven LOW when any internal reset
source is asserted.
always activated, even when the reset terminal is pulled
LOW.
Also included in this device is a LIN physical layer, which
PTD1/ TACH1 and PTD0/ TACH0/BEMF are special-
In step motor applications the PTD0 terminal should be
PTD1 terminal is recommended for use as an output
PTE1/ RXD and PTE0/ TXD are special-function,
PTE0/TXD is internally connected to the TXD terminal of
The
For details refer to the 68HC908EY16 datasheet.
A logic [0] on the
This terminal contains an internal pullup resistor that is
For details refer to the 68HC908EY16 datasheet.
IRQ
terminal is an asynchronous external interrupt
RST
is bidirectional, allowing a reset of the
RST
Analog Integrated Circuit Device Data
terminal forces the MCU to a known
Freescale Semiconductor
IRQ
RST
terminal is pulled
)
IRQ
)