DS1683_12 Datasheet, PDF (10/21 Pages) Maxim Integrated Products – Total-Elapsed-Time and Event Recorder with Alarm

DS1683
Total-Elapsed-Time and Event Recorder with Alarm
Table 1. Register Memory Map
ADDRESS
READ/WRITE
NAME
VOLATILE/
NONVOLATILE
FACTORY
DEFAULT/POWER-
UP DEFAULT
00h
Read/Write
COMMAND
V
00h
01h
Read
STATUS
V
00h
02h–05h
Read*/Write
PWE
V
FFh
06h–07h
—
RSVD
—
—
08h–09h
Read/Write
EVENT REG
NV
00h
0Ah–0Dh
Read/Write
ETC REG
NV
00h
0Eh–0Fh
—
RSVD
—
—
EVENT
10h–11h
Read/Write
COUNTER
NV
00h
ALARM LIMIT
12h–15h
Read/Write
ETC ALARM
LIMIT
NV
00h
16h
Read/Write
CONFIG
NV
00h
17h–19h
—
RSVD
—
—
1Ah–1Dh
Read*/Write
PWV
NV
FFh
1Eh–1Fh
—
RSVD
—
—
20h–2Fh
Read/Write USER MEMORY
NV
00h
30h–FFh
—
RSVD
—
—
Note: I²C 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.
PASSWORD
PROTECTION
No
No
No
—
Yes
Yes
—
Yes
Yes
Yes
—
Yes
—
Yes
—
FUNCTION
Command
Register
Status Register
Password Entry
Registers
Reserved
Event Counter
Registers
ETC Registers
Reserved
Event Counter
Alarm Limit
Registers
ETC Alarm Limit
Registers
Configuration
Register
Reserved
Password Value
Reserved
User EEPROM
Reserved
Maxim Integrated
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