Description

The SLM1302 Trickle Charge Timekeeping Chip contains a real time clock/calendar and 31 bytes of static RAM. It communicates with a microprocessor via a simple serial interface. The real time clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with less than 31 days, including corrections for leap year. The clock operates in either the 24–hour or 12–hour format with an AM/PM indicator.Interfacing the SLM1302 with a microprocessor is simplified by using synchronous serial communication. Only three wires are required to communicate with the clock/RAM: (1) RST (Reset), (2)I/O (Data line), and (3) SCLK (Serial clock).

Features

• ■Real time clock counts seconds, minutes, hours, date of the month, day of the week, and year with leap year compensation valid up to 2100
• ■31X8 RAM
• ■Serial I/O for minimum pin count
• ■2~5.5V full operation
• ■Consumes less than 300nA at 2.5V or below
• ■Single byte or multiple byte data transfer
• ■SOIC8, SOP8, or DIP8
• ■Simple 3-wire interface
• ■TTL compatible
• ■Optional industrial temperature range：-40℃～85℃

Absolute Maximum Ratings

• ■Voltage on any pin realtive to GND: -0.3V~7V
• ■Operating Temperature Range: -40℃ ~85℃
• ■Storage Temperature Range: -55℃~125℃

Typical Application

Datasheet

SLM6401.pdf