Product Summary

The DS1338Z-33 is a real-time clock (RTC). It is a low-power, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM. Address and data are transferred serially through an I2C interface. The DS1338Z-33 provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The DS1338Z-33 operates in either the 24-hour or 12-hour format with AM/PM indicator. The DS1338Z-33 has a built-in power-sense circuit that detects power failures and automatically switches to the battery supply. The applications of the DS1338Z-33 include Handhelds (GPS, POS Terminal), Consumer Electronics (Set-Top Box, Digital Recording, Network Appliance), Office Equipment (Fax/Printer, Copier), Medical (Glucometer, Medicine Dispenser), Telecommunications (Router, Switcher, Server) and Other (Utility Meter, Vending Machine, Thermostat, Modem).

Parametrics

DS1338Z-33 absolute maximum ratings: (1)Voltage Range on Any Pin Relative to Ground: -0.3V to +6.0V; (2)Operating Temperature Range: -40 to +85℃; (3)Storage Temperature Range: -55 to +125℃.

Features

DS1338Z-33 features: (1)RTC Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100; (2)Available in a Surface-Mount Package with an Integrated Crystal (DS1338C); (3)56-Byte Battery-Backed NV RAM for Data Storage; (4)I2C Serial Interface; (5)Programmable Square-Wave Output Signal; (6)Automatic Power-Fail Detect and Switch Circuitry; (7)Underwriters Laboratory (UL) Recognized.

Diagrams

DS1338Z-33 block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)
Quantity
DS1338Z-33
DS1338Z-33

Maxim Integrated Products

Real Time Clock I2C Serial RTC w/56 Byte NV RAM

Data Sheet

0-6920: $1.11
DS1338Z-33/T&R
DS1338Z-33/T&R

Maxim Integrated Products

Real Time Clock I2C Serial RTC w/56 Byte NV RAM

Data Sheet

0-2500: $0.92
2500-8320: $0.92
DS1338Z-33+
DS1338Z-33+

Maxim Integrated Products

Real Time Clock I2C Serial RTC w/56 Byte NV RAM

Data Sheet

0-1: $2.07
1-25: $1.39
25-50: $1.01
50-100: $1.00
DS1338Z-33+T&R
DS1338Z-33+T&R

Maxim Integrated Products

Real Time Clock I2C Serial RTC w/56 Byte NV RAM

Data Sheet

0-2420: $0.74
2420-2500: $0.74