Datasheet

DS1683
Total-Elapsed-Time and Event Recorder with Alarm
14Maxim Integrated
REGISTERS 12h–15h: ETC ALARM LIMIT REGISTER
REGISTER 16h: CONFIGURATION REGISTER
Factory Default 00 00 00 00h
Read Access All
Write Access PW
Memory Type Shadowed EEPROM, Nonvolatile
Memory
Access
R/W R/W R/W R/W R/W R/W R/W R/W
12h 2
7
2
6
2
5
2
4
2
3
2
2
2
1
2
0
13h 2
15
2
14
2
13
2
12
2
11
2
10
2
9
2
8
14h 2
23
2
22
2
21
2
20
2
19
2
18
2
17
2
16
15h 2
31
2
30
2
29
2
28
2
27
2
26
2
25
2
24
BIT 7 BIT 0
The ETC Alarm Limit is a shadowed EEPROM, and when the ETC register value equals or exceeds the ETC Alarm Limit value,
the ETC flag bit (ETC AF bit, Register 01h, bit 0) goes active high. When the ETC register value drops below the ETC Alarm Limit
value, the EVENT AF bit automatically clears.
Factory Default /Power-On Value 00h
Read Access All
Write Access PW
Memory Type Shadowed EEPROM, Nonvolatile
Memory
Access
N/A N/A N/A R/W R/W R/W R/W R/W
01h Reserved Reserved Reserved Reserved Reserved
ETC ALRM
EN
EVENT
ALRM EN
ALRM POL
BIT 7 BIT 0
7:3 Reserved Reserved
2
ETC ALRM
EN
Default value = 0, which is disabled. When set to a 1, and if the ETC register is equal to or greater
than the ETC Alarm limit, then this device triggers the ETC Alarm Flag (ETC AF), and the ALARM pin
goes to its active state.
1
EVENT
ALRM EN
Default value = 0, which is disabled. When set to a 1, and if the Event Counter register is equal to
or greater than the Event Counter Alarm limit, then this device triggers the Event Counter Alarm Flag
(EVENT AF), and the ALARM pin goes to its active state.
0 ALRM POL
Default value = 0, which sets the ALARM output active low. When set to a 1, the ALARM output is
active high.