DIODES PT7C4337BZEEX

Drop-In Replacement for PT7C4337 Supports High-ESR Crystals Up To 100kQ Uses external 32.768kHz quartz crystal for PT7C4337B Supports I²C -Bus's high speed mode (400kHz) Includes time (Hour/Minute/Second) and calendar (Year/Month/Date/Day) counter functions (BCD code) Programmable square wave output signal Two Time-of-Day Alarms Oscillator Stop Flag Operating range: 1.8V to 5.5V Timekeeping range: 1.2V to 1.8V Totally Lead-Free & Fully RoHS Compliant Halogen and Antimony Free. “Green" Device

The PT7C4337B serial real-time clock is a low-power clock/calendar with two programmable time-of-day alarms and a programmable square-wave output. Address and data are transferred serially via a 2-wire, bidirectional bus. The clock/calendar provides 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 AM/PM indicator. The device is fully accessible through the serial interface while VCC is between 1.8V and 5.5V. PC operation is not guaranteed below 1.8V. Timekeeping operation is maintained with VCC as low as 1.2V.

• Drop-In Replacement for PT7C4337
• Supports High-ESR Crystals Up To 100kQ
• Uses external 32.768kHz quartz crystal for PT7C4337B
• Supports I²C -Bus's high speed mode (400kHz)
• Includes time (Hour/Minute/Second) and calendar (Year/Month/Date/Day) counter functions (BCD code)
• Programmable square wave output signal
• Two Time-of-Day Alarms
• Oscillator Stop Flag
• Operating range: 1.8V to 5.5V
• Timekeeping range: 1.2V to 1.8V
• Totally Lead-Free & Fully RoHS Compliant
• Halogen and Antimony Free. “Green" Device