DS1922E datasheet(8/44 Pages) MAXIM

Part #	DS1922E

Description	High-Temperature Logger iButton with 8KB Data-Log Memory

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Manufacturer	MAXIM [Maxim Integrated Products]

Direct Link	https://www.maximintegrated.com/en.html

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High-Temperature Logger iButton with 8KB

Data-Log Memory

8

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AVAILABLE COMMANDS:

DATA FIELD AFFECTED:

READ ROM

MATCH ROM

SEARCH ROM

CONDITIONAL SEARCH ROM

SKIP ROM

RESUME

OVERDRIVE-SKIP ROM

OVERDRIVE-MATCH ROM

64-BIT ROM, RC-FLAG

64-BIT ROM, RC-FLAG, ALARM FLAGS, SEARCH CONDITIONS

RC-FLAG

RC-FLAG, OD-FLAG

64-BIT ROM, RC-FLAG, OD-FLAG

1-Wire ROM

FUNCTION COMMANDS

WRITE SCRATCHPAD

READ SCRATCHPAD

COPY SCRATCHPAD WITH PW

READ MEMORY WITH PW AND CRC

CLEAR MEMORY WITH PW

FORCED CONVERSION

START MISSION WITH PW

STOP MISSION WITH PW

256-BIT SCRATCHPAD, FLAGS

256-BIT SCRATCHPAD

512-BYTE DATA MEMORY, REGISTERS, FLAGS, PASSWORDS

MEMORY, REGISTERS, PASSWORDS

MISSION TIMESTAMP, MISSION SAMPLES COUNTER,

START DELAY, ALARM FLAGS, PASSWORDS

MEMORY ADDRESSES 020Ch TO 020Dh

FLAGS, TIMESTAMP, MEMORY ADDRESSES

020Ch TO 020Dh (WHEN LOGGING)

FLAGS

DS1922E-SPECIFIC

MEMORY FUNCTION COMMANDS

COMMAND LEVEL:

BUS

MASTER

1-Wire NET

OTHER DEVICES

DS1922E

Figure 2. Hierarchical Structure for 1-Wire Protocol

MSB

8-BIT

CRC CODE

48-BIT SERIAL NUMBER

MSB

LSB

8-BIT FAMILY CODE

(41h)

MSB

LSB

Figure 3. 64-Bit Lasered ROM

1ST

STAGE

2ND

STAGE

3RD

STAGE

4TH

STAGE

7TH

STAGE

8TH

STAGE

6TH

STAGE

5TH

STAGE

X0

X1

X2

X3

X4

POLYNOMIAL = X8 + X5 + X4 + 1

INPUT DATA

X5

X6

X7

X8

Figure 4. 1-Wire CRC Generator

Similar Part No. - DS1922E

Manufacturer	Part #	Datasheet	Description
Maxim Integrated Produc...	DS1922E	406Kb / 44P	High-Temperature Logger iButton with 8KB Rev 1; 10/08
	DS1922E	418Kb / 44P	High-Temperature Logger iButton with 8KB Data-Log Memory Rev 3; 4/11
	DS1922E-F5	418Kb / 44P	High-Temperature Logger iButton with 8KB Data-Log Memory Rev 3; 4/11
	DS1922E-F5#	1Mb / 44P	iButton High-Temperature Logger with 8KB Datalog Memory 2017
	DS1922E-F5-	406Kb / 44P	High-Temperature Logger iButton with 8KB Rev 1; 10/08

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Manufacturer	Part #	Datasheet	Description
Maxim Integrated Produc...	DS1922L	714Kb / 52P	Temperature Logger iButton with 8KB Data-Log Memory Rev 10; 4/11
Maxim Integrated Produc...	DS1922E	418Kb / 44P	High-Temperature Logger iButton with 8KB Data-Log Memory Rev 3; 4/11
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Maxim Integrated Produc...	DS1923	642Kb / 55P	Hygrochron Temperature/Humidity Logger iButton with 8KB Data-Log Memory Rev 3; 10/09
Dallas Semiconductor	DS1922L	428Kb / 48P	Temperature Logger iButton With 8kB Datalog Memory
Maxim Integrated Produc...	DS1922E	1Mb / 44P	iButton High-Temperature Logger with 8KB Datalog Memory 2017
	DS1922L	571Kb / 50P	Temperature Logger iButton With 8kB Datalog Memory REV: 120407
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DS1922E Datasheet(PDF) 8 Page - Maxim Integrated Products

DS1922E Datasheet(HTML) 8 Page - Maxim Integrated Products

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