DS1388Z-5+ by Analog Devices

I²C RTC/Supervisor with Trickle Charger and 512 Bytes EEPROM


The DS1388 I²C real-time clock (RTC), supervisor, and EEPROM is a multifunction device that provides a clock/calendar, programmable watchdog timer, power-supply monitor with reset, and 512 bytes of EEPROM. The clock provides hundredths of seconds, seconds, minutes, and hours, and operates in 24-hour or 12-hour format with an AM/PM indicator. The calendar provides day, date, month, and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including corrections for leap year. A watchdog timer provides a reset for an unresponsive microprocessor. It is programmable in 10ms intervals from 0.01 to 99.99 seconds. A temperature-compensated voltage reference and comparator circuit monitors the status of VCC. If a primary power failure is detected, the device automatically switches to the backup supply and drives the reset output to the active state. The backup supply maintains time and date operation in the absence of VCC. When VCC returns to nominal levels, the reset is held low for a period to allow the power supply and processor to stabilize. The device also has a pushbutton reset controller, which debounces a reset input signal. The device is accessed through an I²C serial interface.

Where to Buy

Prices starting from US$2.54

Distributor Stock
Logo for Farnell
Farnell
from US$3.91
196
in stock
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Logo for Newark Electronics
Newark Electronics
from US$4.65
196
in stock
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Logo for element14
element14
from US$4.10
196
in stock
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Logo for Schukat Electronic
Schukat Electronic
from US$3.67
60
in stock
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Logo for CoreStaff
CoreStaff
from US$2.54
34
in stock
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Features

Fast (400kHz) I²C Interface
RTC Counts Hundredths of Seconds, Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Valid Up to 2100
Programmable Watchdog Timer
Automatic Power-Fail Detect and Switch Circuitry
Reset Output with Pushbutton Reset Input Capability
512 x 8 Bits of EEPROM
Integrated Trickle-Charge Capability for Backup Supply
Three Operating Voltages: 5.0V, 3.3V, and 3.0V
Low Timekeeping Voltage Down to 1.3V
-40°C to +85°C Temperature Range

Specifications

Interface I2C
VSUPPLY (V) 2.7 to 5.5
Date/ Time Format (hh = sec/100) YY-MM-DD/ HH:MM:SS:hh
Time Keeping Current (nA) (typ) 410
CL (pF) 6
Memory Type EEPROM
Memory Size (Bytes) 512
Time of Day Alarms 0
Package/Pins SOIC (N)/8
BudgetaryPrice (See Notes) 2.64


DS1388Z-5+ Semiconductors - ICs by Analog Devices

RTC/SUPERVISOR 4MB HH:MM:SS:HH NSOIC8

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Date Format Day
Clock Format HH
Clock IC Type RTC
Supply Voltage Min 4.5V
Supply Voltage Max 5.5V
Clock IC Case Style NSOIC
No. of Pins 8Pins
IC Interface Type I2C
Operating Temperature Min -40°C
Operating Temperature Max 85°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Rtc/Supervisor, 4Mb, Hh:Mm:Ss:Hh, Nsoic8 | Newark Electronics
RTC/SUPERVISOR, 4MB, HH:MM:SS:HH, NSOIC8 | element14
RTC/SUPERVISOR, 4MB, HH: MM: SS: HH, NSOIC8 | Farnell
RTC I²C Trickle-Charge SO8 | Schukat Electronic

Frequently Asked Questions

Where can I find additional details, specifications and documents for a DS1388Z-5+ ?

Additional datasheets, footprints and schematics for DS1388Z-5+ are listed on our Part Details page. You can also find images and similar parts to DS1388Z-5+ on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for DS1388Z-5+ on our Product Comparison page. Access via the 'View Pricing & Stock' button to view DS1388Z-5+ price breaks, MOQs, lead times, inventory and SKUs from distributors.

Who can I contact for technical support of the product?

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Is the DS1388Z-5+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for DS1388Z-5+ have stock available?

Authorised distributors including Newark Electronics, element14, Farnell, Schukat Electronic and CoreStaff have stock available or on a lead time for DS1388Z-5+ .

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