RA-4574SA:B3 ROHS Epson Toyocom Corporation, RA-4574SA:B3 ROHS Datasheet

RA-4574SA:B3 ROHS

Manufacturer Part Number

RA-4574SA:B3 ROHS

Description

IC REAL TIME CLOCK 14-SOP

Manufacturer

Epson Toyocom Corporation

Series

-r

Type

Clock/Calendarr

Datasheets

1.RA-4574SAB3_ROHS.pdf (1 pages)

2.RA-4574SAB3_ROHS.pdf (1 pages)

Specifications of RA-4574SA:B3 ROHS

Features

Alarm, Leap Year

Memory Size

Time Format

HH:MM:SS (24 hr)

Date Format

YY-MM-DD-dd

Interface

3-Wire Serial

Voltage - Supply

1.6 V ~ 5.5 V

Voltage - Supply, Battery

1.6 V ~ 5.5 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

14-SOIC (0.209", 5.30mm Width)

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

Other names

NB10-029570
SER3761TR

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Signal Name Input / Output

∗ Equivalent to 1 minute of monthly deviation

Power voltage

Clock voltage

Operating

Frequency

Oscillation

For Automotive

SERIAL-INTERFACE REAL TIME CLOCK MODULE

RA - 4574 SA

temperature

tolerance

start-up time

•Built in frequency adjusted 32.768 kHz crystal unit.

•Interface Type

•Operating voltage range

•Wide Timekeeper voltage range : 1.6 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.

•Conforms to AEC-Q200

FCON

/ AIRQ

/ TIRQ

DATA

FOUT

Block diagram

Pin Function

Specifications (characteristics)

GND

CE0

CE1

CLK

Frequency characteristics

FOUT

FCON

/ TIRQ

/ AIRQ

DATA

CLK

CE 1

CE 0

Recommended Operating Conditions

Real time clock module

Item

Bi-directional

Output

Input

Symbol

Δ f / f

STA

OPR

CLK

The chip enabled input pin 0. (Built-in pull-down resistance)

When both CE0 and CE1 pins are at the “H” level , access to this

The chip enabled input pin 1.

When the CE1 pin is at the HIGH level, the FOUT pin is in the output state.

The shift clock input pin for serial data transfer.

The data input / output pin for serial data transfer.

This pin outputs the reference clock signal at 32.768 kHz ( C-MOS 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.

Real time clock module becomes possible.

32.768 kHz

OUTPUT

INTERRUPTS

OSC

= +25 °C

Condition

BUS

= 3.0 V

= 1.6 V

INTERFACE

CONTROLLER

Condition

CIRCUIT

DIVIDER

: 3-wire serial interface

: 1.6 V to 5.5 V

: 0.5 μA / 3 V (Typ.)

Min.

−40

1.6

Typ.

+25

Function

3.0

3 Max.

5 ± 23 ∗

Rating

http://www.epsontoyocom.co.jp

CLOCK and

TIMER

ALARM

CONTROL

SHIFT REGISTER

Max.

+85

5.5

CALENDAR

× 10

Unit

°C

−6

CONTROL LINE

Actual size

Current

Consumption

Current consumption characteristics

Item

• 32.768 kHz frequency output function

• Timer function

• Alarm function

Symbol

Overview

32k

Terminal connection / External dimensions

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

• Output frequency selectable from 1/30 Hz to 32.768 kHz(32 Values)

• Timer function can be set between 1/4096 second and 255 minutes.

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

• Selectable one time mode or repeat mode.

• Alarm function can be set to any combination of day of

• It is recorded automatically to AF-bit at the time of event

occurrence, and it’s possible to output with /TIRQ pin output

(open-drain output).

week, hour, or minute.

occurrence, and it’s possible to output with /AIRQ pin output

(open-drain output).

CE0, CE1 = GND

FOUT ;Output OFF

CE0 = GND

CE1 = V

FOUT ;

32.768 kHz output ON

CL = 30 pF

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

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

GND

FOUT

N.C.

( Hi - z )

∗ Refer to application manual for details.

Condition

Product Number (Please contact us)

RA-4574SA : Q41A47451xxxx00

RA − 4574 SA

SOP − 14 pin

7.4

Epson Toyocom

= 5 V

= 3 V

= 5 V

= 3 V

5.0

± 0.2

Min.

Typ.

14.

13.

12.

11.

10.

1.0

0.5

8.0

5.0

= −40 °C to +85 °C

FCON

CE1

DATA

CLK

/ TIRQ

/ AIRQ

CE0

Max.

20.0

12.0

2.0

1.0

(Unit:mm)

Unit

µA

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