DS1346 MAXIM [Maxim Integrated Products], DS1346 Datasheet - Page 5

• Manufacturer Part Number: DS1346
• Description: Low-Current, SPI-Compatible Real-Time Clocks
• Manufacturer: MAXIM [Maxim Integrated Products]

Low-Current, SPI-Compatible Real-Time Clocks
PIN
—
1
2
3
4
5
6
7
8
NAME
SCLK
DOUT
GND
DIN
V
X1
X2
EP
CC
_______________________________________________________________________________________
Serial-Clock Input. SCLK is used to synchronize data movement on the serial interface for either 3-wire or
SPI communications.
Serial-Data Output. When SPI communication is enabled, the DOUT pin is the serial-data output for the SPI
bus.
Serial-Data Input. When SPI communication is enabled, the DIN pin is the serial-data input for the SPI bus.
Ground
Active-Low Chip Select. The chip-enable signal must be asserted low during a read or a write for SPI
communications.
Power-Supply Input
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
the external oscillator and the X2 pin is left unconnected.
Exposed Pad. Connect to GND or leave unconnected.
TOP VIEW
DOUT
SCLK
GND
DIN
1
2
4
3
+
DS1346
DS1347
TDFN
EP
FUNCTION
6
8
7
5
X1
V
X2
CS
CC
Pin Configuration
Pin Description
5