DS1347T 데이터 시트보기 (PDF) - Maxim Integrated

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DS1347T

Low-Current, SPI-Compatible Real-Time Clocks

Maxim Integrated 

Low-Current, SPI-Compatible Real-Time Clocks

Pin Configuration

TOP VIEW

+

SCLK 1

DOUT 2

DIN 3

DS1346

DS1347

GND 4

EP

8 X1

7 X2

6 VCC

5 CS

TDFN

Pin Description

PIN

NAME

FUNCTION

1

SCLK

Serial-Clock Input. SCLK is used to synchronize data movement on the serial interface for either 3-wire or

SPI communications.

2

DOUT

Serial-Data Output. When SPI communication is enabled, the DOUT pin is the serial-data output for the SPI

bus.

3

DIN Serial-Data Input. When SPI communication is enabled, the DIN pin is the serial-data input for the SPI bus.

4

GND Ground

5

CS

Active-Low Chip Select. The chip-enable signal must be asserted low during a read or a write for SPI

communications.

6

VCC Power-Supply Input

7

X1 Connections for Standard 32.768kHz Quartz Crystal (see the Crystal Characteristics table). The devices

can also be driven by an external 32.768kHz oscillator. In this configuration, the X1 pin is connected to

8

X2 the external oscillator and the X2 pin is left unconnected.

—

EP Exposed Pad. Connect to GND or leave unconnected.

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