Datasheet > DS2465P

DS2465P

更新时间： 2022-10-27 16:29:50

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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ABRIDGED DATA SHEET

DS2465

SHA-256 Coprocessor with 1-Wire Master Function

Pin Configuration

Detailed Description

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

1-Wire master and two pages of user memory.

TOP VIEW

GND

SCL

SDA

SLPZ

Refer to the full data sheet for this information.

DS2465

TSOC

The self-timed 1-Wire master function supports advanced

1-Wire waveform features including standard and over-

drive speeds, active pullup, and strong pullup for power

delivery. The active pullup affects rising edges on the

1-Wire side. The strong pullup function uses the same

pullup transistor as the active pullup, but with a differ-

ent control algorithm. Once supplied with command

and data, the input/output controller of the DS2465 per-

forms time-critical 1-Wire communication functions such

as reset/presence-detect cycle, read-byte, write-byte,

single-bit R/W, and triplet for ROM Search, without requir-

ing interaction with the host processor. The host obtains

feedback (completion of a 1-Wire function, presence

pulse, 1-Wire short, and search direction taken) through

the 1-Wire Master Status register and data through the

1-Wire Read Data register. All registers, the user memory

and a scratchpad are located in a linear address space

for direct access. The DS2465 communicates with a host

Pin Description

NAME FUNCTION

GND

Ground Reference

I/O Driver for 1-Wire Line

Power-Supply Input

Active-Low Control Input. Activates the

low-power sleep mode and issues a

device reset of the SHA-coprocessor and

the 1-Wire master (equivalent to the

1-Wire Master Reset command).

SLPZ

I C Serial-Data Input/Output. Must be

SDA

SCL

connected to V

through a pullup

processor through its I C bus interface in standard mode

or in fast mode. See Figure 1 for a block diagram.

resistor.

I C Serial-Clock Input. Must be connect-

ed to V

through a pullup resistor.

�� Maxim Integrated Products

1 2 3 456 7 8...31

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