1339RR-2(2011) Просмотр технического описания (PDF) - Maxim Integrated

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1339RR-2
(Rev.:2011)

I2C Serial Real-Time Clock

Maxim Integrated 

DS1339 I2C Serial Real-Time Clock

REVISION HISTORY

REVISION

DATE

DESCRIPTION

Removed leaded part numbers from the Ordering Information table.

100108

Removed the pullup resistor voltage spec from the Recommended DC

Operating Conditions table and added it to the pin descriptions.

Removed Note 7 from the IBKDR specification in the DC Electrical Characteristics

table.

Updated the block diagram (Figure 3) to show that SQW/INT is open drain.

Added the UL link to the VBACKUP description in the Pin Description table.

Removed the duplicate Oscillator Circuit section.

Added the initial POR state for time and date registers in the Power Control

section.

Changed the series resistance (ESR) value in Table 2 from 45kΩ to 50kΩ.

Added the overbar to the “A” legend for NACK in Figure 8.

Updated the soldering temperature and added lead temperature information to

the Absolute Maximum Ratings section; added the Package Thermal

Characteristics section and updated the µSOP θJA and θJC numbers; changed

the VCC max numbers from 2.2V to 5.5V for DS1339-2 and 3.3V to 5.5V for

DS1339-3 in the Recommended DC Operating Conditions table.

4/11

Updated the ICCS parameter in the DC Electrical Characteristics table.

Changed the 10 Hour bit to 20 Hour bit for 02h, 09h, and 0Ch in Table 1 and the

Time and Date Operation section.

Updated the Handling, PCB Layout, and Assembly section; removed the

transistor count from the Chip Information section; added the land pattern

numbers to the Package Information table.

PAGES

CHANGED

1

2, 8

3

6

8

9

9

10

18

2

3

11, 12

19

20 of 20

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim

reserves the right to change the circuitry and specifications without notice at any time.

Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

© 2011 Maxim Integrated Products

Maxim is a registered trademark of Maxim Integrated Products, Inc.

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