iC-TW3 SENSOR SIGNAL CONDITIONER WITH
TEMPERATURE COMPENSATION AND LINE DRIVER
Rev B1, Page 20/24
ERROR CONDITIONS
ERR_TEMP
Adr 0x03; Bit 6
Error message
R
iC-TW3 maintains three status bits reporting system
error conditions. These bits are ERR_EE, ERR_TEMP
and ERR_SIG of register 0x03. If any error condition is
triggered, i.e. indicated by any of these bits being set
to 1, this will also assert pin NERR pulling it low.
Code
0
ADC reading is below value defined in register
TALARM(2:0)
1
ADC reading is above value defined in register
TALARM(2:0)
Notes
This error is not latched. Disabling temperature
monitoring is possible by setting TALARM(2:0) to
’111’.
ERR_EE
Adr 0x03; Bit 5
Error message
No error since the last reset
R
Code
0
1
Table 39: Temperature alarm
One of the following error conditions has occurred
since the last reset:
1. EEPROM checksum error*
2. EEPROM read error
3. EEPROM write error
ERR_SIG
Adr 0x03; Bit 7
R
Code
0
Error message
All input terminals are connected
An input terminal is left unconnected
Notes
This error message can not be disabled and its bit
status is maintained until the device is reset.
1
*) A permanent logic zero read at SDA does not
lead to a checksum error.
Notes
This error is not latched. To enable this alarm
ENSIGAB or ENSIGZ must be set 1.
Table 38: EEPROM data error
Table 40: Signal unconnected alarm
ICHAUS [ IC-HAUS GMBH ]
