参数资料
型号: RTC-4701JEB
厂商: EPSON TOYOCOM CORP
元件分类: 时钟/数据恢复及定时提取
英文描述: REAL TIME CLOCK, PDSO20
封装: VSOJ-20
文件页数: 17/22页
文件大小: 203K
代理商: RTC-4701JEB
RTC - 4701 JE / NB
Page - 1
MQ312-08
Serial RTC module with alarm and timer function
RTC - 4701 JE/NB
Built-in 32.768 kHz crystal oscillator with frequency adjusted
Alarm interrupt function for day of week, day, hour, and minute
Timer interrupt function which can be set up between 1/4096 second and 255 minutes
OVF interrupt function based on 12-bit additional counter
Ability to detect stopping of oscillation and time update
Automatic adjustment for leap year
Built-in temperature sensor ( voltage output :
7.6 mV / °C Typ.)
Wide range of interface voltage between 1.6 V and 5.5 V
Wide range of clock voltage between 1.6 V and 5.5 V
Low power consumption at 0.5
A / 3 V ( Typ.)
Available as small package ( JE : VSOJ-20 pin , NB : SON-22pin )
1. Overview
This module is a serial interface real time clock that has a built-in crystal oscillator. The module offers
many functions such as clock & calendar circuitry with automatic leap year adjustment (from seconds to
year), additional counter, alarm, Timer interrupt, stopping of oscillation, and time update. In addition, it is
equipped with a diode temperature sensor (analog voltage output).
The serial interface can be controlled by three signal lines, and it saves the port which a system uses
most. Because it is available in small package SON(VSOJ) in high density mounting, it is ideally suited
for applications such as mobile phones, handy terminals or other small electronic systems.
2. Block diagram
FOUT
CONTROLLER
FOUT
FOE
INTERRUPTS
CONTROLLER
BUS
INTERFACE
CIRCUIT
TIMER
REGISTER
ALARM
REGISTER
Temperature
Sensor
CLOCK
and
CALENDAR
OSC
32.768 kHz
DIVIDER
CONTROL
REGISTER
and
SYSTEM
CONTROLLER
/ AIRQ
/ TIRQ
DATA
CLK
CE
Control Line
VTEMP
/ SOFF
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