Datasheet > DS32X35

DS32X35

更新时间： 2024-02-22 01:43:27

品牌	Logo	应用领域
美信 - MAXIM		晶体石英晶振温度补偿晶振
页数	文件大小	规格书
21页	279K
描述
Accurate I2C RTC with Integrated TCXO/Crystal/FRAM

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数据手册

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DS32X35 数据手册

Accurate I C RTC with Integrated

TCXO/Crystal/FRAM

DS2x35

SDA

SCL

BUF

HD:STA

LOW

SU:STA

HD:STA

HIGH

SU:STO

REPEATED

START

SU:DAT

STOP

START

HD:DAT

Figure 1. Data Transfer on I C Serial Bus

SDA

MSB

SLAVE ADDRESS

R/W

DIRECTION

BIT

ACKNOWLEDGEMENT

SIGNAL FROM RECEIVER

ACKNOWLEDGEMENT

SIGNAL FROM RECEIVER

SCL

3–7

ACK

START

CONDITION

STOP

CONDITION

OR REPEATED

START

CONDITION

REPEATED IF MORE BYTES

ARE TRANSFERED

Figure 2. I C Data Transfer Overview

input and open-drain SDA I/O lines. Within the bus

specifications, a standard mode (100kHz maximum

clock rate) and a fast mode (400kHz maximum clock

rate) are defined. The DS32x35 works in both modes.

I C Serial Data Bus

The DS32x35 supports a bidirectional I C bus and data

transmission protocol (Figure 1). A device that sends

data onto the bus is defined as a transmitter, and a

device receiving data is defined as a receiver. The

device that controls the message is called a master.

The devices that are controlled by the master are

slaves. The bus must be controlled by a master device

that generates the serial clock (SCL), controls the bus

access, and generates the START and STOP condi-

The following bus protocol has been defined (Figure 2):

• Data transfer can be initiated only when the bus is

not busy.

• During data transfer, the data line must remain stable

whenever the clock line is high. Changes in the data

line while the clock line is high are interpreted as

control signals.

tions. The DS32x35 operates as a slave on the I C bus.

Connections to the bus are made through the SCL

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