DS1991 Datasheet - Dallas Semiconductor

MultiKey iButton

DS1991 Features

* 1,152-bit secure read/write, nonvolatile memory

* Secure memory cannot be deciphered www.DataSheet4U.com without matching 64-bit password

* Memory is partitioned into 3 blocks of 384 bits each

* 64-bit password and ID fields for each memory block

* 512-bit scratchpad ensures data tra

DS1991 General Description

The DS1991 MultiKey iButton is a rugged read/write data carrier that acts as three separate electronic keys, offering 1,152 bits of secure, nonvolatile memory. Each key is 384 bits long with distinct 64-bit password and public ID fields (Figure 1). The password field must be matched in order to acce.

DS1991 Datasheet (333.37 KB)

DS1991 Datasheet Preview — Preview of DS1991 PDF

Datasheet Details

Part number:

DS1991

Manufacturer:

Dallas Semiconductor

File Size:

333.37 KB

Description:

Multikey ibutton.

📁 Related Datasheet

DS1990A Serial Number iButton (Maxim Integrated)

DS1990R Serial Number IButton (Maxim Integrated Products)

DS1992 (DS1992 / DS1993) 1kbit/4kbit Memory iButtonTM DS1994 4-kbit Plus Time Memory iButtonTM (Dallas Semiconductor)

DS1993 (DS1992 / DS1993) 1kbit/4kbit Memory iButtonTM DS1994 4-kbit Plus Time Memory iButtonTM (Dallas Semiconductor)

DS1994 4kb Plus Time Memory iButton (Dallas Semiconductor)

DS1995 16Kb Memory iButton (Maxim Integrated)

DS1995 16-kbit Memory iButton (Dallas Semiconductor)

DS1996 64Kb Memory iButton (Maxim Integrated)

DS1996 64kbit Memory iButtonTM (Dallas Semiconductor)

DS1904 RTC iButton (Maxim Integrated)

TAGS

DS1991 MultiKey iButton Dallas Semiconductor

Image Gallery

DS1991 Features

DS1991 General Description

Datasheet Details

File Size:

Description:

DS1991 Distributor