VSS
EVSS
VSSA
VREFL
VDD
EVDD
VDDA
VREFH
LIN
FGEN
PTD1/TACH1
PTE1/RXD
RXD
PTD0/TACH0/BEMF
PTB1/AD1
BEMF
SS
IRQ_A
RST_A
IRQ
RST
Port C I/Os
Port B I/Os
Port A I/Os
HVDD
HB4
HB3
HB2
HB1
EPGND[1:2]
VSUP[1:3]
908E626
908E626 Simplified Application Diagram
Switchable Internal
V
DD
Output
Microcontroller
Ports
Bipolar
Step
Motor
N
S
MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
This document contains certain information on a new product.
Specifications and information herein are subject to change without notice.
© Motorola, Inc. 2004
Document order number: MM908E626
Rev 1.0, 11/2004
908E626
Advance Information
STEPPER MOTOR DRIVER
WITH EMBEDDED MCU AND LIN
Integrated Stepper Motor Driver
with Embedded MCU and LIN Serial
Communication
The 908E626 is an integrated single-package solution that includes a high-
performance HC08 microcontroller with a SMARTMOS
TM
analog control IC.
The HC08 includes flash memory, a timer, enhanced serial communications
interface (ESCI), an analog-to-digital converter (ADC), serial peripheral
interface (SPI) (only internal), and an internal clock generator (ICG) module.
The analog control die provides fully protected H-Bridge outputs, voltage
regulator, autonomous watchdog, and local interconnect network (LIN)
physical layer.
The single-package solution, together with LIN, provides optimal
application performance adjustments and space-saving PCB design. It is well
suited for the control of automotive stepper applications like climate control
and light-levelling.
Features
• High-Performance M68HC08EY16 Core
• 16 K Bytes of On-Chip Flash Memory
• 512 Bytes of RAM
• Internal Clock Generation Module
• Two 16-Bit, 2-Channel Timers
• 10-Bit Analog-to-Digital Converter
• Four Low R
DS(ON)
Half-Bridge Outputs
• 13 Microcontroller I/Os
DWB SUFFIX
CASE 1400-01
54-TERMINAL SOICWB-EP
ORDERING INFORMATION
Device
Temperature
Range (T
A
)
Package
MM908E626AVDWB/R2 -40°C to 115°C
54 SOIC
WB-EP
908E626 Simplified Application Diagram
Note Applications with
multiple stepper motors
in one system (e.g., climate
control) typically have a
central reverse battery
protection.


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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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