AMIS30622C6228G ON Semiconductor, AMIS30622C6228G Datasheet - Page 35

• Manufacturer Part Number: AMIS30622C6228G
• Description: IC MOTOR DVR MICROSTP I2C 32NQFP
• Manufacturer: ON Semiconductor
• Type: Micro Stepping Motor Driverr

Specifications of AMIS30622C6228G

• Applications: Stepper Motor Driver
• Number Of Outputs: 1
• Current - Output: 800mA
• Voltage - Supply: 6.5 V ~ 29 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 32-VSQFP
• Operating Supply Voltage: 5 V
• Mounting Style: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

efficient inter−ic control. This bus is called the Inter IC or
I
Features include:
•
•
•
•
receiver−transmitter relationships to be found on the
I
permanent but only depend on the direction of data transfer
at that time. The transfer of data would proceed as follows:
General Description
2
2
Table 24. DEFINITION OF I
Transmitter
Receiver
Master
Slave
Synchronization
C−bus.
C−bus. It should be noted that these relationships are not
AMIS−30622 uses a simple bi−directional 2−wire bus for
Figure 21
Only two bus lines are required; a serial data line
(SDA) and a serial clock line (SCK).
Each device connected to the bus is software
addressable by a unique address and simple
master/slave relationships exists at all times; master can
operate as master−transmitter or as master receiver.
Serial, 8−bit oriented, bi−directional data transfers can
be made up to 400 kb/s.
On−chip filtering rejects spikes on the bus data line to
preserve data integrity.
1. Suppose the microcontroller wants to send
information to motordriver_1:
♦
♦
♦
Microcontroller (master) addresses
Microcontroller (master−transmitter) sends data
Microcontroller terminates the transfer
Term
motordriver_1 (slave)
to motordriver_1 (slave−receiver)
Figure 21. Example of an I
SDA
SCL
highlights
controller
The device which sends data on the bus
The device which receives data from the bus
The device which initiates a transfer, generates clock signals and terminates a transfer
The devices addressed by a master
Procedure to synchronizer the clock signals of two or more devices
Micro−
2
C–BUS TERMINOLOGY
the
master−slave
Motordriver_1
AMIS−30622
2
C−bus Configuration Using One Microcontroller and Four Slaves
I
2
C BUS DESCRIPTION
http://onsemi.com
Motordriver_2
and
AMIS−30622
35
•
•
Concept
serial clock (SCK), carrying information between the
devices connected on the bus. Each device connected to the
bus is recognized by a unique address and operates as either
a transmitter or receiver, depending on the function of the
device. AMIS−30622 can both receive and transmit data. In
addition to transmitters and receivers, devices can also be
considered as masters or slaves when performing data
transfers. AMIS−30622 is a slave device. See Table 25.
terminates the transfer.
responsibility of the master device. It generates its own
clock signal when transferring data on the bus. Bus clock
signals from a master can only be altered when they are
stretched by a slow slave device holding−down the clock
line.
The I
Even in this case the master generates the timing and
Generation of the signals on the I
No need to design bus interfaces because I
interface is already integrated on−chip.
IC’s can be added to or removed from a system without
affecting any other circuits on the bus.
Description
2. If the microcontroller wants to receive information
Motordriver_3
AMIS−30622
2
from motordriver_2:
♦
♦
♦
C−bus consists of two wires, serial data (SDA) and
Microcontroller (master) addresses
Microcontroller (master−receiver) receives data
Microcontroller terminates the transfer
motordriver_2 (slave)
from motordriver_2 (slave−transmitter)
Motordriver_4
AMIS−30622
2
C−bus is always the
2
C−bus