DS1347 Maxim, DS1347 Datasheet - Page 5

• Manufacturer Part Number: DS1347
• Description: The DS1347 SPI-compatible real-time clock (RTC) contains a real-time clock/calendar and 31 x 8 bits of static random-access memory (SRAM)
• Manufacturer: Maxim

PIN
—
1
2
3
4
5
6
7
8
Low-Current, SPI-Compatible Real-Time Clock
NAME
DOUT
SCLK
GND
V
DIN
X2
X1
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).
Exposed Pad. Connect to GND or leave unconnected.
TOP VIEW
DOUT
SCLK
GND
DIN
1
2
4
3
+
DS1347
TDFN
EP
FUNCTION
6
8
7
5
X1
X2
V
CS
CC
Pin Configuration
Pin Description
5