SM8578BV datasheet, PDF - EEWORLD Datasheet

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SM8578BV: Descriptionreal-time clock IC; CategoryThe embedded processor and controller Microcontrollers and processors; File Size117KB，16 Pages; ManufacturerNPC; Websitehttp://www.npc.co.jp/en/

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SM8578BV Overview

real-time clock IC

SM8578BV Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	NPC
package instruction	SSOP, SSOP8,.25
Reach Compliance Code	unknown
Information access methods	SERIAL, FIXED PROTOCOL
interrupt capability	Y
JESD-30 code	R-PDSO-G8
JESD-609 code	e0
Number of terminals	8
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SSOP
Encapsulate equivalent code	SSOP8,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, SHRINK PITCH
power supply	3/5 V
Certification status	Not Qualified
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	0.635 mm
Terminal location	DUAL
shortest time	SECONDS
Volatile	YES

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SM8578BV

Real-time Clock IC

OVERVIEW

The SM8578BV is a serial interface, real-time clock IC that uses a 32.768 kHz crystal oscillator for its refer-

ence timing. It comprises second-counter to year-counter clock and calendar circuits that feature automatic

leap-year adjustment, alarm and timer interrupt functions, as well as oscillator stop, timer reloading, and other

detection functions. Data is transferred to and from an external controller using a 3-wire serial interface. It is

available in compact 8-pin VSOP packages, making it ideal for use in all types of portable, hand-held equip-

ment.

FEATURES

PINOUT

(Top view)

1.6 to 5.5V wide operating voltage range

0.5µA (typ.) current consumption

= 3.0V, CE = Low)

3-wire serial interface control

Day, day-of-week, hour, and minute alarm inter-

rupt function

1/4096 seconds to 255 minutes presettable interval

timer interrupt function

Time update detection function

Abnormal oscillation detection function

Automatic leap-year adjustment function

(Western and Japanese calendars)

Oscillator capacitor C

built-in

Molybdenum-gate CMOS process

Miniature 8-pin VSOP package

INTN

XTN

VSS

VDD

DATA

CLK

ORDERING INFORMATION,

Device

SM8578BV

Package

8-pin VSOP

PACKAGE DIMENSIONS

(Unit: mm)

0 to 10°

4.4 ± 0.2

6.4 ± 0.3

0.585typ

1.15 ± 0.05

3.12 ± 0.3

+ 0.1

0.05

0.15

−

0.22 ± 0.1

NIPPON PRECISION CIRCUITS INC.—1

0.05 ± 0.05

0.65

1.30MAX

0.5 ± 0.2

SM8578BV Related Products

	SM8578BV	SM8578
Description	real-time clock IC	real-time clock IC

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