S-35390A Seiko Instruments, S-35390A Datasheet - Page 3

• Manufacturer Part Number: S-35390A
• Description: 2-Wire Real Time Clock
• Manufacturer: Seiko Instruments

Rev.1.2
Description of Pins
Pin No.
1
2
3
4
5
6
7
8
_00
Symbol
XOUT
INT1
INT2
VDD
VSS
SDA
SCL
XIN
Interrupt 1 signal output pin
(C
Interrrupt 2 signal output pin
Serial clock input pin
Serial data I/O pin
Positive power supply pin
Crystal oscillator connect pin (32,768 Hz)
Negative power supply pin (GND)
Depending on the mode set by INT1 register_1
and the status register, it outputs low or a clock
when the time is reached. It is disabled by
rewriting the status register.
d
Depending on the mode set by INT1 register_2
and the status register, it outputs low or clock
when time is reached. It is disabled by rewriting
the status register.
Since signal processing is done on the SCL
signal rising/falling edge, give great care to the
rising/falling time and comply strictly with the
specifications.
Normally, it is pulled up to the V
resistor and connected with another open-drain
output or open-collector output device via a
wired-OR connection.
built in, C
g
external)
Seiko Instruments Inc.
Description
Table 1
DD
voltage by a
2-WIRE REAL-TIME CLOCK
Nch open-drain output (no
protective diode on the side
of VDD)
Nch open-drain output (no
protective diode on the side
of VDD)
CMOS input (no protective
diode on the side of VDD)
Nch open-drain output (no
protective diode on the side
of VDD)
CMOS input
Configuration



S-35390A
3