參數(shù)資料
型號: S-35392A-I8T1U
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: HALOGEN FREE AND LEAD FREE, SNT-8
文件頁數(shù): 23/47頁
文件大?。?/td> 419K
代理商: S-35392A-I8T1U
2-WIRE REAL-TIME CLOCK
Rev.2.0_00
S-35392A
Seiko Instruments Inc.
3
Pin Function
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.
32KO (constant output of 32.768 kHz) pin
This is an output pin for 32.768 kHz. This pin constantly outputs a clock pulse after power-on.
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
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
32KO, INT2
Figure 4
32KO Pin,
2
INT
Pin
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