IC-MQ_15 Datasheet, PDF (34/43 Pages) IC-Haus GmbH – Sin/Cos INTERPOLATION IC WITH RS422 DRIVER

iC-MQ PROGRAMMABLE 9-BIT
Sin/Cos INTERPOLATION IC WITH RS422 DRIVER
Rev F3, Page 34/43
Quick Programming In The
Single-Master System
For the purpose of signal conditioning it is possible
to reprogram iC-MQ quickly. If test mode is quit and
EMODE ̸= 00, iC-MQ reads the configuration data in
again. In place of the standard EEPROM (DEVID 0x50)
an EEPROM with a different device address can be
read in which can be stored under DEVID (address
0x00, bit 6:0).
In operating modes Mode ABZ, System Test and Mode
191/193 the content of the EEPROM is read in its en-
tirety. For other modes the address area is limited to
0x0-0x31 so that the configuration time for either cali-
bration or IC testing is shortened.
If the setup is switched to test mode during the readin
procedure, readin is aborted and only repeated once
test mode has been terminated.
Quick Programming In The
Multimaster System
Fast programming of iC-MQ, byte for byte, is possible
with a multimaster-competent programming device. To
this end the integrated I²C slave mode must be enabled
by ENSL; iC-MQ then reacts to the device ID 0x55.
If no EEPROM is connected, iC-MQ automatically sets
the I²C slave mode enable (after a maximum of 150 ms,
see Electrical Characteristics, D11) and deactivates the
digital section (ENSL = 1 and END = 0 are set). Any
number of bytes can be written at any one time; the
received data is accepted directly into the RAM regis-
ter. The conditions given in the following table must
be taken into consideration here. After programming
END = 1 must be set to restart sine-to-digital conversion
in the selected mode of operation.