DS32C35-33IND# Maxim Integrated Products, DS32C35-33IND# Datasheet - Page 22

• Manufacturer Part Number: DS32C35-33IND#
• Description: IC RTC W/TCXO 20-SOIC
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/TCXO/Crystal/FRAMr

Specifications of DS32C35-33IND#

• Memory Size: 64K (8K x 8)
• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 3.63 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Function: Clock/Calendar
• Rtc Memory Size: 8192 B
• Supply Voltage (max): 3.63 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Rtc Bus Interface: I2C
• Supply Current: 260 uA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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.
22 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2010 Maxim Integrated Products
Accurate I
TCXO/Crystal/FRAM
REVISION
NUMBER
0
1
2
3
is a registered trademark of Maxim Integrated Products, Inc.
REVISION
DATE
12/06
1/08
4/08
7/10
Initial release
Changed data sheet title/references to DS32x35 with DS32B35/DS32C35
Added text to the General Description section about the clock/date operation
In Table 3, changed 04h range from 00–31 to 01–31
Updated the RTC descriptions in the General Description and Detailed Description
In the Power-Switch Characteristics table, changed t
added
In the Typical Operating Characteristics section, replaced TOCs 1 to 4
Changed Table 1 column headings; added information about the POR state of the time
and date registers to the end of the Power Control section
In the Handling, PCB Layout, and Assembly section, added a limit to the number of
passes through reflow
In the Absolute Maximum Ratings section, added the theta-JA and theta-JC thermal
description in the Pin Description table; changed the 10-hour bit to 20-hour bit in the
Clock and Calendar section and Table 3; updated the BBSQW bit description in the
Control Register (0Eh) section; amended the V
Typical Operating Circuit; added the land pattern no. to the Package Information table
sections
resistances (changed from 73°C/W and 23°C/W to 55°C/W and 24°C/W), added Note 1,
and changed the soldering temperature to +260°C; changed the V
2
C RTC with Integrated
state information to Note 13
DESCRIPTION
Maxim is a registered trademark of Maxim Integrated Products, Inc.
BAT
capacitor representation in the
REC
max from 2ms to 200ms;
BAT
pin function
Revision History
CHANGED
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12, 14, 21
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