Datasheet

DS1683

Total-Elapsed-Time and Event Recorder with Alarm

11Maxim Integrated

Factory Default/Power-On Value 00h

Read Access All

Write Access All

Memory Type SRAM, Volatile

Memory

Access

N/A N/A N/A N/A N/A N/A N/A R/W

00h Reserved Reserved Reserved Reserved Reserved Reserved Reserved CLR ALM

BIT 7 BIT 0

7:1 Reserved Reserved

0 CLR ALM

Clear Alarm Bit. This bit reads as a 0. Writing this bit to a 1 unlatches the active ALARM output, set-

ting the ALARM pin to its inactive state if the alarm condition is no longer present. If the alarm condi-

tion persists, the ALARM pin once again asserts to its active state.

Factory Default /Power-On Value 00h

Read Access All

Write Access N/A

Memory Type SRAM, Volatile

Memory

Access

N/A N/A N/A R/W R/W R/W R/W R/W

01h Reserved Reserved Reserved Reserved Reserved EVENT EVENT AF ETC AF

BIT 7 BIT 0

7:3 Reserved Reserved

2 EVENT This bit indicates the status of the EVENT pin’s logic level, detected after the t

glitch filter time.

1 EVENT AF

Default value = 0. If the value in the Event Counter SRAM value is greater than or equal to the Event

Counter Alarm Limit value, then this bit is automatically set to a value of 1 to indicate an ALARM

event. When the EVENT SRAM Counter value is less than the Event Counter Alarm Limit, this bit

automatically set to a value of 0, indicating that there is no EVENT alarm.

0 ETC AF

Default value = 0. If the value in the ETC SRAM value is greater than or equal to the ETC Alarm Limit

value, then this bit is automatically set to a value of 1 to indicate an ALARM event. When the ETC

SRAM value is less than the ETC Alarm Limit, this bit automatically set to a value of 0, indicating that

there is no ETC alarm.