DS1990 DALLAS [Dallas Semiconductor], DS1990 Datasheet - Page 3

• Manufacturer Part Number: DS1990
• Description: Serial Number iButton
• Manufacturer: DALLAS [Dallas Semiconductor]

DS1990A MEMORY MAP Figure 1
MSB
DS1990A EQUIVALENT CIRCUIT Figure 2
BUS MASTER CIRCUIT Figure 3
8-Bit CRC Code
LSB MSB
48-Bit Serial Number
3 of 10
LSB MSB
To data connection of DS1990A
8-Bit Family Code (01h)
To data connection
of DS1990A
DS1990A
LSB