DS28EA00U+T&R【PDF 6/29 页】IC THERMOMETER 1-WIRE 8-USOP

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Sheet目录40

2页 3页 4页 5页 [6页]7页 8页 9页 10页

1-Wire Digital Thermometer with

Sequence Detect and PIO

DS28EA00

Maxim Integrated

DS28EA00

POWER-SUPPLY

SENSOR

64-BIT

SCRATCHPAD

TEMPERATURE

SENSOR

8-BIT CRC

GENERATOR

1-Wire ROM

FUNCTION

CONTROL

DEVICE

FUNCTION

CONTROL

ALARM AND

CONFIGURATION

REGISTERS

64-BIT

REGISTRATION

NUMBER

PIOB (EN)

PIOA (DONE)

(ON)

INTERNAL V

Block Diagram

AVAILABLE COMMANDS:

DATA FIELD AFFECTED:

READ ROM

MATCH ROM

SEARCH ROM

CONDITIONAL SEARCH ROM

CONDITIONAL READ ROM

SKIP ROM

OVERDRIVE-SKIP ROM

OVERDRIVE-MATCH ROM

64-BIT ROM

64-BIT ROM, TEMPERATURE ALARM REGISTERS, SCRATCHPAD

64-BIT ROM, PIOB PIN STATE, CHAIN STATE

(NONE)

64-BIT ROM, OD-FLAG

1-Wire ROM

FUNCTION COMMANDS

(SEE FIGURE 11)

WRITE SCRATCHPAD

READ SCRATCHPAD

COPY SCRATCHPAD

CONVERT TEMPERATURE

READ POWER MODE

RECALL EEPROM

PIO ACCESS READ

PIO ACCESS WRITE

CHAIN

SCRATCHPAD

TEMPERATURE ALARM AND CONFIGURATION REGISTERS

SCRATCHPAD, TEMPERATURE ALARM REGISTERS

PIN VOLTAGE

SCRATCHPAD, TEMPERATURE ALARM, AND CONFIGURATION REGISTERS

PIO PINS

CHAIN STATE, PIOA PIN STATE

DS28EA00-SPECIFIC

CONTROL FUNCTION COMMANDS

(SEE FIGURE 9)

COMMAND LEVEL:

DS28EA00

Figure 1. Hierarchical Structure for 1-Wire Protocol

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