Datasheet > DS2465P

DS2465P

更新时间： 2024-11-09 07:17:23

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
31页	2053K
描述
SHA-256 Coprocessor with 1-Wire Master Function

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DS2465P 数据手册

ABRIDGED DATA SHEET

219-0017; Rev 0; 4/12

DS2465

SHA-256 Coprocessor with 1-Wire Master Function

General Description

Features

The DS2465 is a SHA-256 coprocessor with built-in

1-Wire master that provides the SHA-256 and memory

S SHA-256 Engine to Operate a Symmetric-Key-

Based Bidirectional Secure Authentication Model

functionality required by a host system to communicate

with and operate a 1-Wire SHA-256 slave. In addition, it

performs protocol conversion between the I C master

S Two 32-Byte Pages of User EEPROM with Multiple

Programmable Protection Options

S 1-Wire Master Port with Selectable Active or

and any attached 1-Wire SHA-256 slaves. For 1-Wire line

driving, internal user-adjustable timers relieve the system

host processor from generating time-critical 1-Wire wave-

forms, supporting both standard and overdrive 1-Wire

communication speeds. The 1-Wire line can be powered

down under software control. Strong pullup features sup-

port 1-Wire power delivery to 1-Wire devices such as

EEPROMs. When not in use, the DS2465 can be put in

sleep mode where power consumption is minimal.

Passive 1-Wire Pullup

S Strong 1-Wire Pullup Provided by an Internal Low-

Impedance Signal Path

S 1-Wire Port Can Be Powered Down Under

Software Control

S I C Operating (Pullup) Voltage: 3.3V ±1ꢀ0

S ESD Protection of ±±8V HBM (typ) on 1-Wire IO

Applications

S Operating Range: 3.3V ±1ꢀ0% -ꢁꢀNC to +±5NC

S 6-Pin TSOC Pac8age

Authentication of Consumables

Secure Feature Control

Ordering Information appears at end of data sheet.

Typical Application Circuit

R = 1.1kΩ

MAXIMUM I C BUS CAPACITANCE 320pF

SDA

SCL

(I C PORT)

µC

DS2465

1-Wire LINE

SLPZ

DS28E15

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

�� Maxim Integrated Products

For information on other Maxim products, visit Maxim’s website at www.maxim-ic.com.

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