Product Details
The DS3234 also integrates 256 bytes of battery-backed SRAM. In the event of main power loss, the contents of the memory are maintained by the power source connected to the VBAT pin. The RTC maintains seconds, minutes, hours, 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. The clock operates in either the 24-hour or 12-hour format with active-low AM/PM indicator. Two programmable time-of-day alarms and a programmable square-wave output are provided. Address and data are transferred serially by an SPI bidirectional bus.
Key Features
- Highly Accurate RTC with Integrated Crystal and SRAM Completely Manages All Timekeeping Functions
- Accuracy ±2ppm from 0°C to +40°C
- Accuracy ±3.5ppm from -40°C to +85°C
- Real-Time Clock Counts Seconds, Minutes, Hours, Day, Date, Month, and Year, with Leap Year Compensation Valid Up to 2099
- Digital Temp Sensor Output: ±3°C Accuracy
- Register for Aging Trim
- Active-Low RST Input/Output
- Two Time-of-Day Alarms
- Programmable Square-Wave Output
- Simple Serial Interface Connects to Most Microcontrollers
- 4MHz SPI Bus Supports Modes 1 and 3
- Battery-Backup Input for Continuous Timekeeping
- Low Power Operation Extends Battery Backup Run Time
- Operating Temperature Ranges: Commercial: 0°C to +70°C, Industrial: -40°C to +85°C
- 300-Mil, 20-Pin SO Package
- Underwriters Laboratories® (UL) Recognized
Applications/Uses
- GPS
- Servers
- Telematics
- Utility Power Meters
Frequency | 32.768kHz |
Osc. Type | TCXO |
Tuning Adjustment Type | Digital |
Frequency Output Type | CMOS Push-Pull |
Frequency Stability (±ppm/yr) (0 to +40°C) | 2 |
Frequency Stability (±ppm/yr) (-40 to 0°C/ +40 to +85°C) | 3.5 |
Frequency Stability (±ppm/yr) (vs. VCC) | 1 (typ) |
Frequency Stability (±ppm) (vs. Aging) | 5 (0-10 Years) |
VSUPPLY (V) | 2.0 to 5.5 2.7 to 5.5 |
Package/Pins | SOIC (W)/20 |
Budgetary Price (See Notes) | $4.16 @1k |
Interface | SPI |
Date/ Time Format (hh = sec/100) | YY-MM-DD/ HH:MM:SS |
Time Keeping Current (nA) (typ) | 1500 |
Memory Type | NV SRAM |
Memory Size (Bytes) | 256 |
Time of Day Alarms | 2 |
Integrated Resonator | XTAL |
Package/Pins | SOIC (W)/20 |
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Parameters
Frequency | 32.768kHz |
Osc. Type | TCXO |
Tuning Adjustment Type | Digital |
Frequency Output Type | CMOS Push-Pull |
Frequency Stability (±ppm/yr) (0 to +40°C) | 2 |
Frequency Stability (±ppm/yr) (-40 to 0°C/ +40 to +85°C) | 3.5 |
Frequency Stability (±ppm/yr) (vs. VCC) | 1 (typ) |
Frequency Stability (±ppm) (vs. Aging) | 5 (0-10 Years) |
VSUPPLY (V) | 2.0 to 5.5 2.7 to 5.5 |
Package/Pins | SOIC (W)/20 |
Budgetary Price (See Notes) | $4.16 @1k |
Interface | SPI |
Date/ Time Format (hh = sec/100) | YY-MM-DD/ HH:MM:SS |
Time Keeping Current (nA) (typ) | 1500 |
Memory Type | NV SRAM |
Memory Size (Bytes) | 256 |
Time of Day Alarms | 2 |
Integrated Resonator | XTAL |
Package/Pins | SOIC (W)/20 |
Key Features
- Highly Accurate RTC with Integrated Crystal and SRAM Completely Manages All Timekeeping Functions
- Accuracy ±2ppm from 0°C to +40°C
- Accuracy ±3.5ppm from -40°C to +85°C
- Real-Time Clock Counts Seconds, Minutes, Hours, Day, Date, Month, and Year, with Leap Year Compensation Valid Up to 2099
- Digital Temp Sensor Output: ±3°C Accuracy
- Register for Aging Trim
- Active-Low RST Input/Output
- Two Time-of-Day Alarms
- Programmable Square-Wave Output
- Simple Serial Interface Connects to Most Microcontrollers
- 4MHz SPI Bus Supports Modes 1 and 3
- Battery-Backup Input for Continuous Timekeeping
- Low Power Operation Extends Battery Backup Run Time
- Operating Temperature Ranges: Commercial: 0°C to +70°C, Industrial: -40°C to +85°C
- 300-Mil, 20-Pin SO Package
- Underwriters Laboratories® (UL) Recognized
Applications/Uses
- GPS
- Servers
- Telematics
- Utility Power Meters
Description
The DS3234 also integrates 256 bytes of battery-backed SRAM. In the event of main power loss, the contents of the memory are maintained by the power source connected to the VBAT pin. The RTC maintains seconds, minutes, hours, 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. The clock operates in either the 24-hour or 12-hour format with active-low AM/PM indicator. Two programmable time-of-day alarms and a programmable square-wave output are provided. Address and data are transferred serially by an SPI bidirectional bus.
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal