DS2465PT(2013) Просмотр технического описания (PDF) - Maxim Integrated

Номер в каталоге

Компоненты Описание

производитель

DS2465PT
(Rev.:2013)

DeepCover Secure Authenticator with SHA-256 Coprocessor and 1-Wire Master Function

Maxim Integrated 

ABRIDGED DATA SHEET

DS2465

DeepCover Secure Authenticator with

SHA-256 Coprocessor and 1-Wire Master Function

ADDRESS

RANGE

00h to 4Bh

4Ch to 5Fh

60h

61h

62h

66h

67h

68h

69h

6Ah

6Bh

6Ch

6Dh

6Eh to 6Fh

70h

73h

74h to 7Fh

80h to 9Fh

A0h to BFh

C0h to FFh

TYPE

ACCESS DESCRIPTION

SRAM

—

—

SRAM

SRAM

R/W

Input scratchpad

—

(Reserved)

W

Command register

R

1-Wire Master Status register

R

1-Wire Read Data register

Refer to the full data sheet.

—

—

(Reserved)

SRAM

R/W

1-Wire Master Configuration register

SRAM

SRAM

SRAM

SRAM

SRAM

SRAM

—

R/W

1-Wire Port Configuration tRSTL

R/W

1-Wire Port Configuration tMSP

R/W

1-Wire Port Configuration tW0L

R/W

1-Wire Port Configuration tREC0

R/W

1-Wire Port Configuration RWPU

R/W

1-Wire Port Configuration Overdrive tW1L

—

(Reserved)

ROM

R

Factory byte

Refer to the full data sheet.

ROM

R

Personality byte

—

—

(Reserved)

EEPROM

(R)/(W) User memory page 0

EEPROM

(R)/(W) User memory page 1

—

—

(Reserved)

Figure 2. Memory Map

Device Registers

The registers of the DS2465 fall into three categories:

write-only, read-only and read/write. Write-only applies to

the command register. Status registers, the 1-Wire read

data register

, are

read-only. The configuration registers can be read and

written; they also have defined power-on default settings.

The factory byte, Manufacturer ID, and Personality byte

are read-only.

Command Register (60h)

To

execute a 1-Wire

function, the DS2465 needs to receive a command from

the I2C host. Commands are written one at a time to the

Command register. Most commands consist of a com-

mand code and a parameter byte. The command code

indicates the type of instruction and the position of the

read pointer for the next I2C read-access. See section

Function Commands for details.

Maxim Integrated

  7

Share Link: