Datasheet > DS1340_11

DS1340_11

更新时间： 2024-10-01 09:55:59

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美信 - MAXIM		/
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描述
I2C RTC with Trickle Charger

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DS1340_11 数据手册

19-5578; Rev 7; 8/11

I C RTC with Trickle Charger

DS1340

General Description

Features

♦ Enhanced Second Source for the ST M41T00

The DS1340 is a real-time clock (RTC)/calendar that is

pin compatible and functionally equivalent to the ST

M41T00, including the software clock calibration. The

device additionally provides trickle-charge capability

♦ Available in a Surface-Mount Package with an

Integrated Crystal (DS1340C)

♦ Fast (400kHz) I C Interface

on the V

pin, a lower timekeeping voltage, and

BACKUP

♦ Software Clock Calibration

an oscillator STOP flag. Block access of the register

map is identical to the ST device. Two additional regis-

ters, which are accessed individually, are required for

the trickle charger and flag. The clock/calendar pro-

vides seconds, minutes, hours, day, date, month, and

year information. A built-in power-sense circuit detects

power failures and automatically switches to the back-

up supply. Reads and writes are inhibited while the

clock continues to run. The device is programmed seri-

♦ RTC Counts Seconds, Minutes, Hours, Day, Date,

Month, and Year

♦ Automatic Power-Fail Detect and Switch Circuitry

♦ Trickle-Charge Capability

♦ Low Timekeeping Voltage Down to 1.3V

♦ Three Operating Voltage Ranges (1.8V, 3V, and 3.3V)

♦ Oscillator Stop Flag

ally through an I C bidirectional bus.

♦ Available in 8-Pin µSOP or SO Packages

♦ Underwriters Laboratories (UL) Recognized

Applications

Ordering Information

Portable Instruments

Point-of-Sale Equipment

Medical Equipment

Telecommunications

PIN-

PACKAGE

†

PART

TEMP RANGE

TOP MARK

D1340-18

DS1340-3

D134033

8 SO

(0.150in)

DS1340Z-18+ -40°C to +85°C

8 SO

(0.150in)

DS1340Z-3+

-40°C to +85°C

Typical Operating Circuit

8 SO

(0.150in)

DS1340Z-33+ -40°C to +85°C

DS1340U-18+ -40°C to +85°C 8 μSOP

DS1340U-3+ -40°C to +85°C 8 μSOP

DS1340U-33+ -40°C to +85°C 8 μSOP

DS1340C-18# -40°C to +85°C 16 SO

1340 -18

1340 -3

CRYSTAL

1340 -33

DS1340C-18

DS1340C-3

DS1340C-33

DS1340C-3#

-40°C to +85°C 16 SO

SCL

FT/OUT

DS1340C-33# -40°C to +85°C 16 SO

+Denotes a lead(Pb)-free/RoHS-compliant package.

CPU

DS1340

#Denotes a RoHS-compliant device that may include lead(Pb)

that is exempt under RoHS requirements. The lead finish is

JESD97 category e3, and is compatible with both lead-based

and lead-free soldering processes.

†A "+" anywhere on the top mark denotes a lead(Pb)-free device.

A "#" denotes a RoHS-compliant device.

SDA

BACKUP

GND

= t / C

R B

Pin Configurations appear at end of data sheet.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...16

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与DS1340_11相关器件

型号	品牌	获取价格	描述	数据表
DS1340-3	MAXIM	获取价格	I2C RTC with Trickle Charger
DS1340C	ADI	获取价格	I2C RTC，带有涓流充电器
DS1340C-18	MAXIM	获取价格	I2C RTC with Trickle Charger
DS1340C-18-	MAXIM	获取价格	I2C RTC with Trickle Charger
DS1340C-18#	MAXIM	获取价格	I2C RTC with Trickle Charger
DS1340C-18+	MAXIM	获取价格	I2C RTC with Trickle Charger
DS1340C-3	MAXIM	获取价格	I2C RTC with Trickle Charger
DS1340C-3-	MAXIM	获取价格	I2C RTC with Trickle Charger
DS1340C-3#	MAXIM	获取价格	I2C RTC with Trickle Charger
DS1340C-3+	MAXIM	获取价格	I2C RTC with Trickle Charger

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