Datasheet

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General Description

The DS3231MPMB1 peripheral module provides the nec-

essary hardware to interface the DS3231M real-time clock

(RTC) to any system that utilizes PmodK-compatible

expansion ports configurable for I

C communication.

The IC is a low-cost and extremely accurate I²C RTC.

The device incorporates a battery input and maintains

accurate timekeeping when main power to the device is

interrupted. The integration of the microelectromechani-

cal systems (MEMS) resonator enhances the long-term

accuracy of the device and reduces the piece-part count

in a manufacturing line. The device is available in the

same footprint as the popular DS3231 RTC.

Refer to the DS3231M IC data sheet for detailed informa-

tion regarding operation of the IC.

Features

S High Accuracy Time-of-Day and Date (±5ppm)

from -40°C to +85°C

S 32.768kHz Square-Wave Output

Digital Temp Sensor with ±3NC Accuracy

6-Pin Pmod-Compatible Connector (I

Example Software Written in C for Portability

Secondary Header Allows Daisy-Chaining of

Additional Modules on the I

C Bus

RoHS Compliant

Proven PCB Layout

Fully Assembled and Tested

DS3231MPMB1 Peripheral Module

For pricing, delivery, and ordering information, please contact Maxim Direct at

1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

DS3231MPMB1 Peripheral Module

19-6337; Rev 0; 5/12

Ordering Information appears at end of data sheet.

Pmod is a trademark of Digilent Inc.

Summary of content (7 pages)

PAGE 1
DS3231MPMB1 Peripheral Module General Description The DS3231MPMB1 peripheral module provides the necessary hardware to interface the DS3231M real-time clock (RTC) to any system that utilizes PmodK-compatible expansion ports configurable for I2C communication. The IC is a low-cost and extremely accurate I²C RTC. The device incorporates a battery input and maintains accurate timekeeping when main power to the device is interrupted.
PAGE 2
DS3231MPMB1 Peripheral Module Component List DESIGNATION QTY DESCRIPTION BAT1 1 Battery holder Memory Protection Devices BH401 C1 1 1FF Q10%, 10V X7R ceramic capacitor (0603) TDK C1608X7R1A105K 1 0.1FF Q10%, 10V X74 ceramic capacitor (0603) Murata GRM188R71C104KA01D C2 DESIGNATION QTY J1 1 6-pin right-angle male header DESCRIPTION J2 1 8-pin (2 x 4) straight male header R1–R4 4 150I Q5% resistors (0603) R5–R8 4 4.
PAGE 3
DS3231MPMB1 Peripheral Module Software and FPGA Code Example software and drivers are available that execute directly without modification on several FPGA development boards tha support an integrated or synthesized microprocessor. These boards include the Digilent Nexys 3, Avnet LX9, and Avnet ZEDBoard, although other platforms can be added over time. Maxim provides complete Xilinx ISE projects containing HDL, Platform Studio, and SDK projects.
PAGE 4
DS3231MPMB1 Peripheral Module Figure 2. DS3231MPMB1 Peripheral Module Component Placement Guide—Component Side Figure 3. DS3231MPMB1 Peripheral Module PCB Layout—Component Side Figure 4.
PAGE 5
DS3231MPMB1 Peripheral Module Figure 5. DS3231MPMB1 Peripheral Module PCB Layout—Inner Layer 2 (Ground) Figure 6. DS3231MPMB1 Peripheral Module PCB Layout—Solder Side Figure 7.
PAGE 6
DS3231MPMB1 Peripheral Module Ordering Information PART TYPE DS3231MPMB1# Peripheral Module #Denotes RoHS compliant.
PAGE 7
DS3231MPMB1 Peripheral Module Revision History REVISION NUMBER REVISION DATE 0 5/12 DESCRIPTION Initial release PAGES CHANGED — Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time.