RX-4581NB:B3:ROHS Epson, RX-4581NB:B3:ROHS Datasheet

Real Time Clock 32.768KHz 128Bit RAM -40C +85C

RX-4581NB:B3:ROHS

Manufacturer Part Number

RX-4581NB:B3:ROHS

Description

Real Time Clock 32.768KHz 128Bit RAM -40C +85C

Manufacturer

Epson

Datasheet

1.RX-4581NBB3ROHS.pdf (2 pages)

Specifications of RX-4581NB:B3:ROHS

Function

Calendar, Alarm, Timer

Supply Voltage (max)

5.5 V

Supply Voltage (min)

1.6 V

Maximum Operating Temperature

+ 85 C

Minimum Operating Temperature

- 40 C

Rtc Bus Interface

Serial

Package / Case

SON-22

Time Format

HH:MM:SS (24 hr)

Date Format

YY:MM:DD

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

RX-4581NB:B3:ROHS

Manufacturer:

Exar

Quantity:

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Signal Name Input/Output

Power voltage

Clock voltage

Operating

Frequency

Oscillation

Built-in SRAM

SERIAL-INTERFACE REAL TIME CLOCK MODULE

RX - 4581 NB

Please ask for tighter tolerance. (

temperature

tolerance

start-up time

/ AIRQ

/ TIRQ

FOUT

Block diagram

Pin Function

Specifications (characteristics)

Built in frequency adjusted 32.768 kHz crystal unit.

Interface Type

Operating voltage range

Wide Timekeeper voltage range

Low backup current

Built-in SRAM

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

The various functions include full calendar, alarm, timer.

GND

CE0

CE1

CLK

FOE

Recommended Operating Conditions

Frequency characteristics

FOUT

FOE

/ AIRQ

/ TIRQ

D I

CLK

CE1

CE0

Real time clock module

Item

Output

32.768 kHz

Input

OSC

Symbol

STA

OPR

CLK

f / f

The chip enabled input pin 0. ( It has a built -in pull-down resistance )

The chip enabled input pin 1. ( It does not have a built -in pull-down resistance )

The shift clock input pin for serial data transfer.

The data input pin for serial data trasfer.

The data output pin for serial data trasfer.

This pin outputs the reference clock signal at 32.768 kHz ( CMOS output ).

High impedance at the time of output off.

The input pin for the FOUT output control.

The open drain output pin for alarm and time update interrupts.

The open drain output pin for timer interrupt.

Connected to a positive power supply.

Connected to a ground.

Equivalent to 1 minute of monthly deviation)

FOUT

INTERRUPTS

BUS

= +25 C

Condition

INTERFACE

CONTROLLER

= 3.0 V

DIVIDER

Condition

CIRCUIT

: 1.6 V to 5.5 V

: 0.4 A / 3 V ( Typ. )

: Built-in 128 bit ( 8 bit 16 ) RAM.

RAM 128 bit

4-wire serial interface

( 8 bit

Min.

1.6

16 )

Typ.

+25

Function

3.0

CLOCK

TIMER

ALARM

CONTROL

SYSTEM

3 Max.

Rating

http://www.epsontoyocom.co.jp

CONTROLLER

and

CALENDAR

and

Max.

+85

5.5

Unit

Actual size

Current

Consumption

Current consumption characteristics

Item

Built-in SRAM

Interface Type

32.768 kHz frequency output function

Interrupt function

Timer function

Overview

Symbol

• Include 128 bit ( 8 bit 16 ) RAM.

• Serial interface in 4 lines form.

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

• FOE pin enables output on/off control.

• Timer function can be set up between

• It is recorded automatic to TF-bit at the time of event

• Alarm interrupt function , and timer interrupt function.

32k

1/4096 second and 4095 minutes.

occurrence,and possible to output with /TIRQ pin output

(open-drain output).

It is possible to make it to 3 lines by wired-OR connecting

DI and DO pins.

Terminal connection / External dimensions

CE0, CE1 = GND

FOE = GND

FOUT ;

CE0, CE1 = GND

FOE = V

FOUT ;

32.768 kHz output ON

CL = 30 pF

10.

11.

* Refer to application manual for details.

output OFF

( Hi - z )

Metal may be exposed on the top or bottom of this product.

Condition

This will not affect any quality, reliability or electrical spec.

GND

CE1

CE0

CLK

/ TIRQ

/ AIRQ

FOE

FOUT

Product Number (Please contact us)

RX-4581NB : Q41458191000200

RX 4581 NB

Epson Toyocom

= 5 V

= 3 V

= 5 V

= 3 V

SON

5.0

4.8

22 pin

0.2

Min.

1.3

0.1

Typ.

0.6

0.4

8.0

5.0

= 40 C to +85 C

22.

21.

20.

19.

18.

17.

16.

15.

14.

13.

12.

Max.

20.0

12.0

1.2

0.8

N.C.

Unit

(Unit:mm)

Related parts for RX-4581NB:B3:ROHS

RX-4581NB:B3:ROHS Summary of contents

Page 1

... Real time clock module Real time clock module Real time clock module Real time clock module Built-in SRAM SERIAL-INTERFACE REAL TIME CLOCK MODULE RX - 4581 NB Built in frequency adjusted 32.768 kHz crystal unit. Interface Type : 4-wire serial interface Operating voltage range : 5.5 V ...

Page 2

... Epson Toyocom. ●The information, applied circuitry, programming, usage, etc., written in this material is intended for reference only. Epson Toyocom does not assume any liability for the occurrence of infringing on any patent or copyright of a third party ...

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