Update: 30 September, 2023
DS3234 is a low-cost, extremely accurate SPI™ bus real-time clock (RTC) with an integrated temperature- compensated crystal oscillator (TCXO) and crystal. The DS3234 incorporates a precision, temperature-compen- sated voltage reference and comparator circuit to moni- tor VCC. When VCC drops below the power-fail voltage (VPF), the device asserts the RST output and also dis- ables read and write access to the part when VCC drops below both VPF and VBAT. The RST pin is monitored as a pushbutton input for generating a reset externally. The device switches to the backup supply input and main- tains accurate timekeeping when main power to the device is interrupted. The integration of the crystal res- onator enhances the long-term accuracy of the device as well as reduces the piece-part count in a manufactur- ing line. The DS3234 is available in commercial and industrial temperature ranges, and is offered in an industry-standard 300-mil, 20-pin SO package. 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 con- nected 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 adjust- ed for months with fewer than 31 days, including correc- tions for leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. Two programmable time-of-day inputs allow setting alarms and timers.
File format: PDF
Size: -
MD5 Checksum: FCC5D366E7DDDE6343515EDE1510A695
Publication date: 09 May, 2012
Downloads: -
PDF Link: MAXIM DS3234 Manual PDF