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BQ2022DBZRG4 Datasheet

  • BQ2022DBZRG4

  • 1K-BIT SERLAL EPROM WITH SDQ INTERFACE

  • 181.86KB

  • 19頁

  • TI

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Actual Size
(3,00 mm x 3,00 mm)
SLUS526B 鈭?OCTOBER 2002 鈭?REVISED OCTOBER 2003
bq2022
1K BIT SERIAL EPROM WITH SDQ INTERFACE
FEATURES
D
1024 bits of One-Time Programmable (OTP)
D
D
D
D
D
D
EPROM For Storage Of User-Programmable
Configuration Data
Factory-Programmed Unique 64-Bit
Identification Number
Bus-Interface Architecture Allowing Multiple
bq2022s Attached to a Single Host
Single-Wire Interface to Reduce Circuit
Board Routing
Synchronous Communication Reduces Host
Interrupt Overhead
No Standby Power Required
Available in a 3-Pin SOT23 Package
DESCRIPTION
The bq2022 is a 1K-bit serial EPROM containing a factory
programmed unique 48-bit identification number, 8-bit
CRC generation, and the 8-bit family code (09h). A 64-bit
status register controls write protection and page
redirection.
The bq2022 SDQ interface (TI鈥檚 proprietary serial
communications protocol) requires only a single
connection and a ground return. The DATA pin is also the
sole power source for the bq2022. The bus architecture
allows multiple SDQ devices to be connected to a single
host.
The small surface-mount package options saves
printed-circuit-board space, while the low cost makes it
ideal for applications such as battery pack configuration
parameters, record maintenance, asset tracking, product-
revision status, and access-code security.
APPLICATIONS
D
Security Encoding
D
Inventory Tracking
D
Product-Revision Maintenance
D
Battery-Pack Identification
ORDERING INFORMATION
PACKAGED DEVICES
TA
鈭?0擄C to 70擄C
SOT23鈭?
bq2022DBZR
(1) Device assured to communicate at 鈭?0擄C to 85擄C.
(2) The device is available only in tape and reel with a base quantity of
3000 units.
BLOCK DIAGRAM
DBZR PACKAGE
(TOP VIEW)
SDQ
1
SDQ Communications
Controller and 8-Bit CRC
Generation Circuit
Internal
Bus
ID ROM
(64 bits)
EPROM
MEMORY
(1024 bits)
SDQ
1
3
VSS
VSS
2
RAM
Buffer
(8 bytes)
EPROM
STATUS
(64 bits)
3
VSS
VSS
2
UDG鈭?2054
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright
錚?/div>
2003, Texas Instruments Incorporated

BQ2022DBZRG4 產(chǎn)品屬性

  • 3,000

  • 集成電路 (IC)

  • 存儲(chǔ)器

  • -

  • EPROMs

  • EPROM OTP

  • 1K（4 頁 x 32 字節(jié)）

  • -

  • 1 線 串行

  • -

  • -20°C ~ 70°C

  • TO-236-3，SC-59，SOT-23-3

  • SOT-23-3

  • 帶卷 (TR)

  • 296-30724-ND - EVAL MODULE FOR BQ2022A-001

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