The MAX6901 3-wire serial interface real-time clock in a TDFN package contains a real-time clock/calendar and 31 x 8 bits of static RAM (SRAM). The real-time clock/calendar provides seconds, minutes, hours, day, date, month, year, and century information. A time/date-programmable polled ALARM is included in the MAX6901. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year up to the year 2100. The clock operates in either the 24hr or 12hr format with an AM/PM indicator. A push-pull 32kHz output is also included. The MAX6901 operates with a supply voltage of +2V to +5.5V, is available in the ultra-small 8-pin TDFN package, and works over the industrial temperature range, -40°C to +85°C.
The SOT23 package has been replaced by a TDFN. For addtional information click here.
Key Features
Applications/Uses
Real-Time Clock Counts Seconds, Minutes, Hours, Day of Week, Date of Month, Month, Year, and Century
Leap-Year Compensation Valid up to Year 2100
Wide +2V to +5.5V Operating Voltage Range
3-Wire Serial Interface, 2MHz at 5V, 500kHz at 2V
31 x 8-Bit SRAM for Scratchpad Data Storage
Uses Standard 32.768kHz, 12.5pF Watch Crystal
Low Timekeeping Current (400nA at 2V)
Single-Byte or Multiple-Byte (Burst Mode)Data Transfer for Read or Write of Clock Registers or SRAM
8-Pin 3mm x 3mm x 0.8mm TDFN Surface-Mount Package
Push-Pull 32.768kHz Clock Output
Programmable Time/Date Polled ALARM Function
No External Crystal Bias Resistors or Capacitors Required
Notes: **This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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