Datasheet

14 Atmel AT30TS00 [Preliminary]
8585B−SEEPR−8/10
Bit Symbol Description
7 CRTALML Crit_Alarm Trip Lock bit
Locks the Critical Alarm Trip register from being updated
0 = Crit_Alarm Trip register can be updated (Power-on default)
1 = Crit_Alarm Trip register is locked and cannot be updated
Once set, it can be only be cleared to ‘0’ by internal power on reset (POR) which occurs when
the device is powered off and then powered on
6 WINLOCK Alarm Window Lock bit
0 = Upper and Lower Alarm Trip Registers can be updated (Power-on default)
1 = Upper and Lower Alarm Trip Registers are locked and cannot be updated
Once set, it can be only be cleared to ‘0’ by internal power on reset (POR) when device is
powered off then powered on
5 EVTCLR
EVENT
Clear. This bit is a Write only bit and will read ‘0’
This bit can clear the
EVENT
pin after it has been enabled and is self clearing
‘0’ = has no effect (power-on default)
‘1’ = clears (releases) the active
EVENT
pin in interrupt mode. This bit is ignored when in
comparator mode
4 EVTSTS
EVENT
Status. This is a Read only bit
This bit indicates if the
EVENT
Output is asserted by the device
‘0’ = The
EVENT
pin is not asserted. (Power-on default)
‘1’ = The device is asserting (drives low) the
EVENT
output due to Alarm trip condition
3 EVTOUT
EVENT
Output Control
This bit, when set, prevents the
EVENT
pin from generating an interrupt
0 = The
EVENT
output is disabled and will not generate interrupts (Power-on default)
1 = The
EVENT
output is enabled
When either of the Crit_Alarm Trip or Alarm Window lock bits is set, this bit cannot be altered
until unlocked
2 CRITEVT Critical Temperature only
0 = The
EVENT
output is asserted for the Upper, Lower and Critical Alarms (Power-on default).
1 = The
EVENT
output is asserted for only Critical Alarm when ambient temperature > Crit_Alarm
trip boundary
When the Alarm Window lock bit is set, this bit cannot be altered until unlocked
1 EVTPOL
EVENT
Polarity
0 = Active LOW. (Power-on default)
A pull-up resistor is required on this pin to set inactive state
1 = Active HIGH
When either of the Crit_Alarm Trip or Alarm Window lock bits is set, this bit cannot be altered
until unlocked
0 EVTMOD
EVENT
Mode
0 = The
EVENT
pin will operate in Comparator mode. (Power-on default)
1 = The
EVENT
pin will operate in Interrupt mode
When either of the Crit_Alarm Trip or Alarm Window lock bits is set, this bit cannot be altered
until unlocked