Datasheet

DS1982
Page 5 of 24
HIERARCHICAL STRUCTURE FOR 1-WIRE PROTOCOL Figure 2
64-BIT LASERED ROM Figure 3
8-Bit CRC Code 48- Bit Serial Number 8- Bit Family Code (09h)
MSB LSB MSB LSB MSB LSB
1-WIRE CRC GENERATOR Figure 4
BUS
MASTER
OTHER
DEVICES
DS 1982
COMMAND AVAILABLE DATA FIELD
LEVEL:
COMMANDS: AFFECTED:
READ ROM 64-BIT ROM
MATCH ROM 64-BIT ROM
SEARCH ROM 64-BIT ROM
SKIP ROM N/A
WRITE MEMORY 1024-BIT EPROM
WRITE STATUS BYTE EPROM STATUS BYTES
READ MEMORY 1024-BIT EPROM
READ STATUS BYTE EPROM STATUS BYTES
READ DATA/GENERATE 1024-BIT EPROM
8-BIT CRC
1-WIRE ROM FUNCTION
COMMANDS (SEE FIGURE 9)
DS1982-SPECIFIC
MEMORY FUNCTION
COMMANDS
(
SEE FIGURE 6
)