DS1305 datasheet(1/22 Pages) DALLAS

Part #	DS1305

Description	Serial Alarm Real Time Clock RTC

PDF	22 Pages

Scroll/Zoom	100%

Manufacturer	DALLAS [Dallas Semiconductor]

Direct Link	https://www.maximintegrated.com/en.html

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070900

FEATURES

Real time clock counts seconds, minutes,

hours, date of the month, month, day of the

week and year with leap year compensation

valid up to 2100

96-byte nonvolatile RAM for data storage

Two time-of-day alarms programmable on

combination of seconds, minutes, hours and

day of the week

Serial interface supports Motorola serial

peripheral interface (SPI) serial data ports or

standard 3-wire interface

Burst mode for reading/writing successive

addresses in clock/RAM

Dual power supply pins for primary and

backup power supplies

Optional trickle charge output to backup

supply

2.0 - 5.5V operation

Optional industrial temperature range

-

40°C to +85°C

Available in space-efficient, 20-pin TSSOP

package

Recognized by Underwriters Laboratory

ORDERING INFORMATION

DS1305

16-Pin DIP

DS1305N

16-Pin DIP (Industrial)

DS1305E

20-Pin TSSOP

DS1305EN

20-Pin TSSOP (Industrial)

PIN ASSIGNMENT

DS1305

Serial Alarm Real Time Clock (RTC)

www.dalsemi.com

VCC2

120

VCC1

VBAT

219

NC

X1

3

18

PF

NC4

17

VCCIF

X2

5

16

SD0

NC6

15

SDI

INT0

7

14

SCLK

NC8

13

NC

INT1

9

12

CE

GND

10

11

SERMODE

DS1305 20-Pin TSSOP (173 mil)

VCC2

1

16

VCC1

VBAT

215

PF

X1

3

14

VCCIF

X2

4

13

SDO

NC5

12

SDI

INT0

6

11

SCLK

INT1

7

10

CE

GND

8

9

SERMODE

DS1305 16-Pin DIP (300 mil)

Similar Part No. - DS1305

Manufacturer	Part #	Datasheet	Description
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Maxim Integrated Produc...	DS1305	315Kb / 22P	Serial Alarm Real-Time Clock Rev 12/09
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SYC Electronica	DS1305	524Kb / 21P	Serial Alarm Real-Time Clock
Bridgelux, Inc.	DS1305	1Mb / 22P	GEN9 V10 BBBL Array Series 12/2023

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Dallas Semiconductor	DS1306	277Kb / 20P	Serial Alarm Real Time Clock RTC
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Maxim Integrated Produc...	DS1305	315Kb / 22P	Serial Alarm Real-Time Clock Rev 12/09
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STMicroelectronics	M41T00AUD	381Kb / 42P	Serial real-time clock (RTC) with audio 06-Feb-2012
Maxim Integrated Produc...	DS1305	363Kb / 22P	Serial Alarm Real-Time Clock 19-5055; Rev 4 / 15
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DS1305 Datasheet(PDF) 1 Page - Dallas Semiconductor

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