RX-8731LC:B3 PURE SN Epson Toyocom Corporation, RX-8731LC:B3 PURE SN Datasheet

RX-8731LC:B3 PURE SN

Manufacturer Part Number

RX-8731LC:B3 PURE SN

Description

IC REAL TIME CLOCK 12-VSOJ

Manufacturer

Epson Toyocom Corporation

Series

-r

Type

Clock/Calendarr

Datasheets

1.RX-8731LCB3_PURE_SN.pdf (2 pages)

2.RX-8731LCB3_PURE_SN.pdf (1 pages)

Specifications of RX-8731LC:B3 PURE SN

Features

Alarm, EEPROM, Leap Year, Unique ID

Memory Size

80b

Time Format

HH:MM:SS (24 hr)

Date Format

YY-MM-DD-dd

Interface

I²C

Voltage - Supply

1.7 V ~ 5.5 V

Voltage - Supply, Battery

1.3 V ~ 5.5 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

12-TSSOJ

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Other names

NB10-029585
SER3786TR

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Signal Name Input / Output

! ! ! !

Power voltage

Clock voltage

Operating

! ! ! !

Frequency

Oscillation

Built-in EEPROM and U nique ID-ROM

RX - 8731 LC

*Equivalent to 1 minute of monthly deviation

* The I

FOUT

temperature

tolerance

Start-up time

C-Bus INTER FACE REA L TIME CLOCK MODU LE

Pin Function

/ IRQ

GND

Specifications (characteristics)

SDA

FOE

SCL

P00

P01

P02

P03

Frequency characteristics

Built in frequency adjusted 32.768 kHz crystal unit.

Interface Type

Operating voltage range

Wide Timekeeper voltage range : 1.3 V to 5.5 V

Low backup current

32.768 kHz frequency output function : C-MOS output With Control Pin

The various functions include full calendar, alarm, timer.

A 0

Block diagram

Recommended Operating Conditions

Real time clock module

P00 – P03

Item

SDA

SCL

FOE

FOUT

/ IRQ

A 0

C-Bus is a trademark of NXP Semiconductors

Bi-directional

Output

Input

Symbol

OPR

STA

CLK

f / f

32.768 kHz

OSC

Serial Clock input pin.

Data input and output pin.

Device address A0 input pin.

FOUT pin is 32.768 kHz clock output pin ( C-MOS ) that output control is

possible.

FOE pin control the frequency output from FOUT pin with FSEL1-bit and

FSEL0-bit.

Interrupt output pin. ( N-ch open drain )

Programmable I/O ports.

Connected to a positive power supply.

Connected to a ground.

= +25 C

= -40 C to +85 C

Condition

= 3.0 V

= 1.6 V

INTERRUPTS

Condition

INTERFACE

CONTROLLER

CIRCUIT

FOUT

C-Bus

DIVIDER

I/O Port

: I

: 1.7 V to 5.5 V

: 0.35 A / 3 V (Typ.)

C-Bus interface (400 kHz)

Min.

-40

1.7

1.3

10 Byte ( 80 bit )

6 Byte ( 48 bit )

EEPROM

ID-ROM

Typ.

+25

3.0

Function

1 Max.

3 Max.

Rating

5 23 *

http://www.epsontoyocom.co.jp

TIMER REGISTER

ALARM REGISTER

CLOCK

CALENDAR

SYSTEM

CONTROL

and

CONTROLLER

Max.

+85

5.5

Unit

Actual size

! ! ! !

Current

Consumption

Current consumption characteristics

Item

Built in EEPROM and ID-ROM

The various interrupt function

Programmable I/O ports

32.768 kHz frequency output function

Interface Type

Overview

Symbol

• Built in 10 Byte ( 80 bit) EEPROM

• Built in 6 Byte ( 48 bit ) ID-ROM

• 4 Programmable I/O ports

• I

• FOUT pin output (C-MOS output), CL=30 pF

• FOE pin enables output on/off control.

• Output frequency is selectable.

• Alarm interrupt function

• Timer interrupt function

• Update interrupt function

32k

< 32.768 kHz, 1024 Hz, 1 Hz >

C-Bus high-speed bus specifications. (400 kHz)

Terminal connection /External dimensions

/ IRQ = OFF

FOUT : output OFF

/ IRQ = OFF

FOUT :

CL = 30 pF

SCL

32.768 kHz output

= 0 Hz

1. FOE

2. P00

3. SDA

4. SCL

5. A 0

6. GND

( Hi - z )

Condition

Refer to application manual for details.

Product Number (Please contact us)

RX-8731LC : Q418731C1000100

RX 8731 LC

VSOJ

Epson Toyocom

= 5 V

= 3 V

= 5 V

= 3 V

2.4

2.8

12pin

Min.

Typ.

0.45

0.35

12. V

10. P02

8.0

5.0

11. P01

9. P03

8. / IRQ

7. FOUT

= 40 C to +70 C

Max. Unit

16.0

10.0

0.9

0.7

(Unit:mm)

µA

Related parts for RX-8731LC:B3 PURE SN

RX-8731LC:B3 PURE SN Summary of contents

Page 1

... Real time clock module Real time clock module Real time clock module Built-in EEPROM and U nique ID-ROM 2 I C-Bus INTER FACE REA L TIME CLOCK MODU 8731 LC Built in frequency adjusted 32.768 kHz crystal unit. 2 Interface Type : I C-Bus interface (400 kHz) Operating voltage range : 1 ...

Page 2

EPSON TOYOCOM In order to meet customer needs in a rapidly advancing digital, broadband and ubiquitous society, we are committed to offering products that are one step ahead of the market and a rank above the rest in quality. ...

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