參數(shù)資料
型號: S-35399A03-J8T2G
元件分類: 時鐘/數(shù)據(jù)恢復及定時提取
英文描述: 1 TIMER(S), REAL TIME CLOCK, PDSO8
封裝: LEAD FREE, SOP-8
文件頁數(shù): 23/53頁
文件大?。?/td> 472K
代理商: S-35399A03-J8T2G
2-WIRE REAL-TIME CLOCK
Rev.2.0_00
S-35399A03
Seiko Instruments Inc.
3
Pin Functions
SDA (I/O for serial data) pin
This pin is to data input/output for I
2C-bus interface. This pin inputs/outputs data by synchronizing with a clock pulse
from the SCL pin. This pin has CMOS input and Nch open drain output. Generally in use, pull up this pin to the VDD
potential via a resistor, and connect it to any other device having open drain or open collector output with wired-OR
connection.
SCL (input for serial clock) pin
This pin is to input a clock pulse for I
2C-bus interface. The SDA pin inputs/outputs data by synchronizing with the clock
pulse.
XIN, XOUT (crystal oscillator connect) pin
Connect a crystal oscillator between XIN and XOUT.
1
INT
(output for interrupt signal 1) pin
This pin outputs a signal of interrupt, or a clock pulse. By using the status register 2, users can select either of; alarm 1
interrupt, output of user-set frequency, per-minute edge interrupt, minute-periodical interrupt 1, minute-periodical
interrupt 2, or 32.768 kHz output. This pin has Nch open drain output.
2
INT
(output for interrupt signal 2) pin
This pin outputs a signal of interrupt, or a clock pulse. By using the status register 2, users can select either of; alarm 2
interrupt, output of user-set frequency, per-minute edge interrupt or minute-periodical interrupt 1. This pin has Nch open
drain output.
VDD (positive power supply) pin
Connect this VDD pin with a positive power supply. Regarding the values of voltage to be applied, refer to “
Recommended Operation Conditions”
.
VSS pin
Connect this VSS pin to GND.
Equivalent Circuits of I/O Pin
SDA
Figure 2 SDA Pin
SCL
Figure 3 SCL Pin
INT1, INT2
Figure 4 INT1 Pin, INT2 Pin
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