AMIS30622C6228G ON Semiconductor, AMIS30622C6228G Datasheet - Page 38

• 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

Clock Generation
messages on the I
HIGH period of the clock.
Data Formats with 7−bit Addresses
the START condition (S), a slave address is sent. This
SCK
bus, it can generate a repeated START (Sr) and address
another slave without first generating a STOP condition.
Various combinations of read/write formats are then
possible within such a transfer.
Data Transfer Formats
Writing Data to AMIS−30622
transmits to slave−receiver and the transfer direction is not
changed. A complete transmission consists of:
eight bytes of data, other commands are transmitting two
bytes of data. See Table 25.
Reading Data to AMIS−30622
are needed:
SDA
The master generates the clock on the SCK line to transfer
Data transfers follow the format shown in Figure 27. After
However, if a master still wishes to communicate on the
When writing to AMIS−30622, the master−transmitter
Some commands for the AMIS−30622 are supporting
When reading data from AMIS−30622 two transmissions
♦
♦
Start condition
The slave address (7−bit)
condition
START
START
S
ADDRESS
2
C−bus. Data is only valid during the
1 − 7
Master to AMIS− 30624
AMIS− 30624 to Master
Slave Address
R/W
8
Figure 28. Master Writing Data to AMIS−30622
”0” = WRITE
ACK
9
R/W
Figure 27. A Complete Data Transfer
A
http://onsemi.com
S = Start condition
P = Stop condition
A = Acknowledge (SDA = LOW)
A = No Acknowledge (SDA = HIGH)
1 − 7
DATA
Data
38
address is 7−bit long followed by an eighth bit which is a data
direction bit (R/W) − a ‘zero’ indicates a transmission
(WRITE), a ‘one’ indicates a request for data (READ). A
data transfer is always terminated by a STOP condition (P)
generated by the master.
N bytes + Acknowledge
8
♦
♦
♦
♦
1. The first transmission consists of two bytes of
acknowledge bit. The acknowledge bit is used to
signal a correct reception of the data to the
transmitter. In this case the AMIS−30622 pulls the
SDA line to ‘0’. The AMIS−30622 reads the
incoming data at SDA on every rising edge of the
SCK signal
Read/Write bit (‘0’ = write)
Acknowledge bit
Any further data bytes are followed by an
Stop condition to finish the transmission
data:
♦
♦
A
ACK
9
The first byte contains the slave address and the
The second byte contains the address of an
write bit.
internal register in the
AMIS−30622. This internal
register address is stored in the circuit RAM.
Data
1 − 7
DATA
A
8
P
ACK
9
condition
STOP
STOP