Overview; Block Diagram - Epson RX801SJ Applications Manual

RX8010 SJ
Low current consumption
SERIAL-INTERFACE REAL TIME CLOCK MODULE
RX8010 SJ
• Built in frequency adjusted 32.768-kHz crystal unit.
• Real-time clock function
• User RAM
• Frequency output function
• Interface type
• Interface voltage range
• Timekeeper voltage range
• Backup current consumption

1. Overview

This is a real-time clock module of the serial interface system that incorporates a 32.768 kHz crystal oscillator.
The real-time clock function incorporates not only a calendar and clock counter for the year, month, day, day of the
week, hour, minute, and second, but also a time alarm, interval timer, and time update interruption, among other
features.
All of these many functions are implemented in a thin, compact SOP package, which makes it suitable for various kinds
of small electronic devices.

2. Block Diagram

BUILT-IN XTAL
( 32.768 kHz )
/ IRQ1
/ IRQ2
SCL
SDA
: Clock/calendar function,Long timer function, alarm interrupt function, etc.
: Built in 128 bit RAM
: 32.768 kHz, 1024 Hz, 1Hz
2
: I C-Bus
: 1.6 V ∼ 5.5 V
: 1.1 V ∼ 5.5 V
: 160 nA / 3 V
Typ
OSC
DIVIDER
ALARM,TIMER,FOUT
INTERRUPTS
CONTROLLER
TIMER, FOUT
BUS
INTERFACE
CIRCUIT
Page − 1
2
The I C-Bus is a trademark of NXP Semiconductors.
CLOCK
and
CALENDR
TIMER REGISTER
ALARM REGISTER
CONTROL
REGISTER
and
SYSTEM
CONTROLLER
USER RAM 128 bit
ETM37E-06