DS1306N View Datasheet(PDF) - Dallas Semiconductor -> Maxim Integrated

Part Name

Description

Manufacturer

DS1306N

Serial Alarm Real Time Clock (RTC)

Dallas Semiconductor -> Maxim Integrated 

FUNCTION TABLE Table 3

MODE

CE

Disable Reset

L

Write

H

SCLK

Input Disabled

CPOL=1*

SDI

Input Disabled

Data Bit Latch

DS1306

SDO

High Z

High Z

CPOL=0

Read

H

CPOL=1

X

Next data bit

shift**

CPOL=0

* CPOL is the “Clock Polarity” bit that is set in the control register of the microcontroller.

** SDO remains at High Z until 8 bits of data are ready to be shifted out during a read.

NOTE:

CPHA bit polarity (if applicable) may need to be set accordingly.

SERIAL CLOCK AS A FUNCTION OF MICROCONTROLLER

CLOCK POLARITY (CPOL) Figure 6

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