DS2432_12 datasheet, PDF - EEWORLD Datasheet

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DS2432_12: Description1K X 1 1-WIRE SERIAL EEPROM, PDSO6; Categorystorage; File Size422KB，17 Pages; ManufacturerMaxim; Websitehttps://www.maximintegrated.com/en.html

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DS2432_12 Overview

1K X 1 1-WIRE SERIAL EEPROM, PDSO6

DS2432_12 Parametric

Parameter Name	Attribute value
Number of functions	1
Number of terminals	6
Maximum operating temperature	85 Cel
Minimum operating temperature	-40 Cel
Maximum supply/operating voltage	5.25 V
Minimum supply/operating voltage	2.8 V
Rated supply voltage	5 V
Processing package description	0.150 INCH, TSOC-6
state	TRANSFERRED
packaging shape	Rectangle
Package Size	SMALL OUTLINE
surface mount	Yes
Terminal form	GULL WING
Terminal location	pair
Packaging Materials	Plastic/Epoxy
Temperature level	INDUSTRIAL
memory width	1
organize	1K × 1
storage density	1024 deg
operating mode	Synchronize
Number of digits	1024 words
Number of digits	1K
Memory IC type	1-wire serial electrically erasable read-only memory
serial parallel	serial

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ABRIDGED DATA SHEET

219-0003; Rev 3/12

DS2432

1Kb Protected 1-Wire EEPROM with SHA-1 Engine

FEATURES



1128 Bits of 5V EEPROM Memory

Partitioned Into Four Pages of 256 Bits, a

64-Bit Write-Only Secret, and Up to Five

General-Purpose Read/Write Registers

On-Chip 512-Bit ISO/IEC 10118-3 SHA-1

Engine to Compute 160-Bit Message

Authentication Codes (MACs) and to

Generate Secrets

Write Access Requires Knowledge of the

Secret and the Capability of Computing and

Transmitting

160-Bit

MAC

Authorization

Secret and Data Memory Can Be Write

Protected (All or Page 0 Only) or Put in

EPROM-Emulation Mode (“Write to 0”,

Page 1)

Unique, Factory-Lasered and Tested 64-Bit

Registration Number Assures Absolute

Traceability Because No Two Parts Are Alike

Built-In Multidrop Controller Ensures

Compatibility with Other 1-Wire

Net

Products

Reduces Control, Address, Data, and Power

to a Single Data Pin

Directly Connects to a Single Port Pin of a

Microprocessor and Communicates at Up to

15.3kbps

Overdrive Mode Boosts Communication

Speed to 125kbps

Low-Cost 6-Lead TSOC Surface-Mount

Package or Solder-Bumped UCSP™ Package

Reads and Writes Over a Wide Voltage

Range of 2.8V to 5.25V from -40°C to +85°C

PIN CONFIGURATIONS

TOP VIEW

GND 1

1-Wire 2

NC 3

TSOC

(150 mils)

6 NC

5 NC

4 NC



A1 MARK



DS2432

yywwrr

###xx

UCSP

(TOP VIEW WITH LASER

MARK, CONTACTS NOT

VISIBLE)

A2 = 1-WIRE

A3 = GND

ALL OTHER BUMPS: NC

yywwrr = DATE/REVISION

###xx = LOT NUMBER



REFER TO THE PACKAGE RELIABILITY REPORT FOR

IMPORTANT GUIDELINES ON QUALIFIED USAGE CONDITIONS.



ORDERING INFORMATION

PART

DS2432P+

DS2432P+T&R

DS2432X-S+

TEMP

RANGE

-40°C to +85°C



-40°C to +85°C

PIN-

PACKAGE

6 TSOC

8 UCSP (2.5k

pcs, T&R)



+Denotes

a lead(Pb)-free/RoHS-compliant package.

T&R = Tape and reel.

Request Full Data Sheet at:

www.maxim-ic.com/fullds/DS2432

1-Wire is a registered trademark of Maxim Integrated Products, Inc.

1 of 17

ABRIDGED DATA SHEET

DS2432

The DS2432 combines 1024 bits of EEPROM, a 64-bit secret, an 8-byte register/control page with up to

five user read/write bytes, a 512-bit SHA-1 engine, and a fully-featured 1-Wire interface in a single chip.

Each DS2432 has its own 64-bit ROM registration number that is factory lasered into the chip to provide

a guaranteed unique identity for absolute traceability. Data is transferred serially via the 1-Wire protocol,

which requires only a single data lead and a ground return. The DS2432 has an additional memory area

called the scratchpad that acts as a buffer when writing to the main memory, the register page or when

installing a new secret. Data is first written to the scratchpad from where it can be read back. After the

data has been verified, a copy scratchpad command will transfer the data to its final memory location,

provided that the DS2432 receives a matching 160-Bit MAC. The computation of the MAC involves the

secret and additional data stored in the DS2432 including the device’s registration number. Only a new

secret can be loaded without providing a MAC. The SHA-1 engine can also be activated to compute

160-bit message authentication codes (MAC) when reading a memory page or to compute a new secret,

instead of loading it. Applications of the DS2432 include intellectual property security, after-market

management of consumables, and tamper-proof data carriers.

DESCRIPTION

OVERVIEW

The block diagram in Figure 1 shows the relationships between the major control and memory sections of

the DS2432. The DS2432 has five main data components: 1) 64-bit lasered ROM, 2) 64-bit scratchpad, 3)

four 32-byte pages of EEPROM, 4) 64-bit register page, 5) 64-bit Secrets Memory, and 6) a 512-bit

SHA-1 Engine (SHA = Secure Hash Algorithm). The hierarchical structure of the 1-Wire protocol is

shown in Figure 2. The bus master must first provide one of the seven ROM Function Commands, 1)

Read ROM, 2) Match ROM, 3) Search ROM, 4) Skip ROM, 5) Resume Communication, 6) Overdrive-

Skip ROM or 7) Overdrive-Match ROM. Upon completion of an Overdrive ROM command byte

executed at regular speed, the device will enter Overdrive mode where all subsequent communication

occurs at a higher speed. The protocol required for these ROM function commands is described in Figure

9. After a ROM function command is successfully executed, the memory and SHA-1 functions become

accessible and the master may provide any one of the seven memory function commands. The protocol

for these memory function commands is described in Figure 7

All data is read and written least

significant bit first.

For Figure 7, refer to the full version of the data sheet.

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DS2432_12 Related Products

	DS2432_12	DS2432P+R	DS2432P+T
Description	1K X 1 1-WIRE SERIAL EEPROM, PDSO6	1K X 1 1-WIRE SERIAL EEPROM, PDSO6	1K X 1 1-WIRE SERIAL EEPROM, PDSO6
Number of functions	1	1	1
Number of terminals	6	6	6
Maximum operating temperature	85 Cel	85 Cel	85 Cel
Minimum operating temperature	-40 Cel	-40 Cel	-40 Cel
Maximum supply/operating voltage	5.25 V	5.25 V	5.25 V
Minimum supply/operating voltage	2.8 V	2.8 V	2.8 V
Rated supply voltage	5 V	5 V	5 V
Processing package description	0.150 INCH, TSOC-6	0.150 INCH, TSOC-6	0.150 INCH, TSOC-6
state	TRANSFERRED	TRANSFERRED	TRANSFERRED
packaging shape	Rectangle	Rectangle	Rectangle
Package Size	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE
surface mount	Yes	Yes	Yes
Terminal form	GULL WING	GULL WING	GULL WING
Terminal location	pair	pair	pair
Packaging Materials	Plastic/Epoxy	Plastic/Epoxy	Plastic/Epoxy
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
memory width	1	1	1
organize	1K × 1	1K × 1	1K × 1
storage density	1024 deg	1024 deg	1024 deg
operating mode	Synchronize	Synchronize	Synchronize
Memory IC type	1-wire serial electrically erasable read-only memory	1-wire serial electrically erasable read-only memory	1-wire serial electrically erasable read-only memory
serial parallel	serial	serial	serial
Number of digits	1K	1K	1K

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