Datasheet

1-Wire Digital Thermometer with
Sequence Detect and PIO
DS28EA00
6 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)
IO
V
DD
(ON)
INTERNAL V
DD
R
CO
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
64-BIT ROM
64-BIT ROM, TEMPERATURE ALARM REGISTERS, SCRATCHPAD
64-BIT ROM, PIOB PIN STATE, CHAIN STATE
(NONE)
64-BIT ROM, OD-FLAG
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
SCRATCHPAD
TEMPERATURE ALARM AND CONFIGURATION REGISTERS
SCRATCHPAD, TEMPERATURE ALARM REGISTERS
V
DD
PIN VOLTAGE
SCRATCHPAD, TEMPERATURE ALARM, AND CONFIGURATION REGISTERS
PIO PINS
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