High-Temperature Logger iButton with 8KB

Data-Log Memory

10

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ADDRESS

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

FUNCTION

ACCESS*

0200h

0

10 Seconds

Single Seconds

0201h

0

10 Minutes

Single Minutes

0202h

0

12/24

20 Hour

AM/PM

10 Hour

Single Hours

0203h

0

0

10 Date

Single Date

0204h

CENT

0

0

10

Months

Single Months

0205h

10 Years

Single Years

Real-

Time Clock

Registers

R/W

R

0206h

Low Byte

0207h

0

0

High Byte

Sample

Rate

R/W

R

0208h

Low Threshold

0209h

High Threshold

Temperature

Alarms

R/W

R

020Ah

(No Function with the DS1922E)

020Bh

(No Function with the DS1922E)

—

R/W

R

020Ch

Low Byte

0

0

0

0

0

020Dh

High Byte

Latest

Temperature

R

R

020Eh

(No Function with the DS1922E)

020Fh

(No Function with the DS1922E)

—

R

R

0210h

0

0

0

0

0

0

ETHA

ETLA

Temperature

Alarm

Enable

R/W

R

0211h

1

1

1

1

1

1

0

0

—

R/W

R

0212h

0

0

0

0

0

0

EHSS

EOSC

RTC Control

R/W

R

0213h

1

1

SUTA

RO

(X)

TLFS

0

ETL

Mission

Control

R/W

R

0214h

BOR

1

1

1

0

0

THF

TLF

Alarm Status

R

R

0215h

1

1

0

WFTA

MEMCLR

0

MIP

0

General

Status

R

R

0216h

Low Byte

0217h

Center Byte

0218h

High Byte

Start

Delay

Counter

R/W

R

Figure 6. DS1922E Register Pages Map

*

The left entry in the ACCESS column is valid between missions. The right entry shows the applicable access type while a

mission is in progress.