Datasheet

DS1683
Total-Elapsed-Time and Event Recorder with Alarm
10Maxim Integrated
Table 1. Register Memory Map
Note: I
2
C reads from memory locations that do not exist report a value of FFh.
V: Volatile (SRAM); NV: Nonvolatile (EEPROM).
*The PWE and PWV bytes read back 0s.
ADDRESS READ/WRITE NAME
VOLATILE/
NONVOLATILE
FACTORY
DEFAULT/POWER-
UP DEFAULT
PASSWORD
PROTECTION
FUNCTION
00h Read/Write COMMAND V 00h No
Command
Register
01h Read STATUS V 00h No Status Register
02h–05h Read*/Write PWE V FFh No
Password Entry
Registers
06h–07h — RSVD — — — Reserved
08h–09h Read/Write EVENT REG NV 00h Yes
Event Counter
Registers
0Ah–0Dh Read/Write ETC REG NV 00h Yes ETC Registers
0Eh–0Fh — RSVD — — — Reserved
10h–11h Read/Write
EVENT
COUNTER
ALARM LIMIT
NV 00h Yes
Event Counter
Alarm Limit
Registers
12h–15h Read/Write
ETC ALARM
LIMIT
NV 00h Yes
ETC Alarm Limit
Registers
16h Read/Write CONFIG NV 00h Yes
Configuration
Register
17h–19h — RSVD — — — Reserved
1Ah–1Dh Read*/Write PWV NV FFh Yes Password Value
1Eh–1Fh — RSVD — — — Reserved
20h–2Fh Read/Write USER MEMORY NV 00h Yes User EEPROM
30h–FFh — RSVD — — — Reserved