AMIS-30624 Datasheet, PDF (43/56 Pages) AMI SEMICONDUCTOR – I2C Microstepping Motordriver

AMIS-30624
AMIS-30624 is provided with a physical address in order to discriminate this circuit from other circuits on the I²C bus. This address is
coded on seven bits (two bits being internally hardwired to ‘1’), yielding the theoretical possibility of 32 different circuits on the same
bus. It is a combination of four OTP memory bits (OTP Memory Structure) and of the externally hardwired address bits (pin HW). HW
must either be connected to ground or to Vbat. When HW is not connected and is left floating, correct functionality of the positioner is
not guaranteed. The motor will be driven to the programmed secure position (See Hardwired Address – OPEN).
MSB
LSB
1 1 PA3 PA2 PA1 PA0 HW R/W
PC20070219.3
OTP memory Hardwired Address Bit
Figure 34: First Byte after START Procedure
15.7.2. General Call Address
The AMIS-30624 supports also a “general call” address “000 0000”, which can address all devices. When this address is used all
devices should respond with an acknowledge. The second byte of the general call address then defines the action to be taken.
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