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AMIS-30512 Datasheet

Micro-Stepping Motor Driver

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AMIS-30512
Micro-Stepping Motor Driver
Introduction
The AMIS30512 is a microstepping stepper motor driver for
bipolar stepper motors. The chip is connected through I/O pins and a
SPI interface with an external microcontroller. It has an onchip
voltage regulator, resetoutput and watchdog reset, able to supply
peripheral devices. The AMIS30512 contains a currenttranslation
table and takes the next microstep depending on the clock signal on
the “NXT” input pin and the status of the “DIR” (=direction) register
or input pin. The chip provides a socalled “speed and load angle”
output. This allows the creation of stall detection algorithms and
control loops based on loadangle to adjust torque and speed. It is
using a proprietary PWM algorithm for reliable current control.
The AMIS30512 is implemented in I2T100 technology, enabling
both highvoltage analog circuitry and digital functionality on the
same chip. The chip is fully compatible with the automotive voltage
requirements.
The AMIS30512 is ideally suited for generalpurpose stepper
motor applications in the automotive, industrial, medical, and marine
environment.
Key Features
Dual HBridge for 2phase Stepper Motors
Programmable Peakcurrent up to 800 mA Using a 5bit Current
DAC
Onchip Current Translator
SPI Interface
Speed and Load Angle Output
Seven Step Modes from Fullstep up to 32 Microsteps
www.DataSFheuellt4yUI.nctoemgrated Currentsense
PWM Current Control with Automatic Selection of Fast and Slow
Decay
Low EMC PWM with Selectable Voltage Slopes
Active Flyback Diodes
Full Output Protection and Diagnosis
Thermal Warning and Shutdown
Compatible with 3.3 V Microcontrollers, 5 V Tolerant Inputs
Integrated 5 V Regulator to Supply External Microcontroller
Integrated Reset Function to Reset External Microcontroller
Integrated Watchdog Function
http://onsemi.com
PIN ASSIGNMENT
DO
VDD
GND
DI
CLK
NXT
DIR
ERR
SLA
CPN
CPP
VCP
(Top View)
TSTO
POR/WD
VBB
MOTXP
GND
MOTXN
MOTYN
GND
MOTYP
VBB
CS
CLR
ORDERING INFORMATION
Device
AMIS30512
Package
SOIC 24
Shipping
Tape & Reel
© Semiconductor Components Industries, LLC, 2008
September, 2008 Rev. 1
1
Publication Order Number:
AMIS30512/D


  ON Semiconductor Electronic Components Datasheet  

AMIS-30512 Datasheet

Micro-Stepping Motor Driver

No Preview Available !

AMIS30512
Table of Contents
Page
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Pin List and Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Typical Application Schematic . . . . . . . . . . . . . . . . . . . . . . . 9
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
SPI Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Soldering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
CLK
CS
DI
DO
NXT
DIR
SLA
POR/WD
CLR
ERR
www.DataSheet4U.com
VDD CPN CPP VCP VBB
Timebase
Vreg
Chargepump
POR
EMC
SPI
OTP
T
R
A
N
Isense
P
W
M
S
Logic &
Registers
Load
Angle
L
A
T
O
EMC
P
R
W
M
Temp.
Sense
Isense
Band
gap
AMIS30512
TST0
Figure 1. Block Diagram
GND
MOTXP
MOTXN
MOTYP
MOTYN
http://onsemi.com
2


Part Number AMIS-30512
Description Micro-Stepping Motor Driver
Maker ON Semiconductor
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