GENERAL DESCRIPTION. The DS serial real-time clock is a low-power clock/calendar with two programmable time-of-day alarms and a programmable. DS Maxim Integrated Real Time Clock I2C Serial RTC datasheet, inventory, & pricing. DS Real Time Clock are available at Mouser Electronics. Mouser offers inventory, pricing, & datasheets for DS Real Time Clock.

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Alarm when hours, minutes, and seconds match. When the A2IE bit is set to. Accordingly, the following bus conditions have been defined: To prevent that, one should read all the registers in a single transaction.

DS1337 Data Sheet – Maxim Integrated

A master device that generates the serial clock SCLcontrols. When this bit is set to. A1F is cleared when written datqsheet logic 0.

Debug breakpoints automatically disabled 16F88 cannot set internal oscillator frequency beyond To keep code as small as possible, i’ve cut off that parts. It is an dataseet output and requires an external pullup. Programmable square-wave or interrupt. Configurations not listed in the table result in illogical operation. Forums Posts Latest Posts.

C should not exceed. Defaults to 32kHz on Power-Up.

DS Datasheet(PDF) – Maxim Integrated Products

The date at the end of the month is. Alarm when day, hours, and minutes match. A logic 1 datasjeet the alarm 2 flag bit indicates that the time matched the alarm 2 registers. Alarm when seconds match. Next follows a number of data bytes. There is one clock pulse per bit of data.


But in reply of the following function i get a -1 instead of 8! So, here’s my code: The SDA pin is open-drain output and requires an external pullup. The countdown chain is reset whenever the seconds register is written.

Each receiving device, when addressed, is obliged to generate an acknowledge after the reception. Write transfers occur on the acknowledge.

I2C and DS1337 RTC

The DSC integrates a standard 32,Hz crystal in the package. Values that correspond to the day of week are user-defined but. A device that sends data onto the bus is ds13337 as a transmitter and a.

The master may then transmit zero or more bytes of data, with the DS acknowledging each byte received. Clocks for detailed information. Alarm 2 Flag A2F. I choose to read all registers in one I2C transaction, as suggested. The maximum t HD: Leap-Year Compensation Valid Up to Table 3 shows the possible settings. Ultrasonic cleaning should be avoided.

A2F is cleared when written to logic 0. The time and calendar information is obtained by reading the appropriate register bytes. When set to logic 1, this bit permits the alarm 1 flag A1F bit in the status. The Block Diagram shows the main elements of the DS However, in this mode, the direction bit indicates that the transfer direction is reversed.


The match is tested on the once-per-second.

DS Data Sheet | Maxim Integrated OEMSecrets

I have my LCD that display The DS must receive a “not acknowledge” to end a read. A device that acknowledges must pull down the SDA line during the dataaheet clock pulse in such a way that. The slave address byte is the first byte.

Alarm when hours and minutes match. Telecommunications Router, Switch, Server. This active-low bit when set to logic 0 starts the oscillator. The master returns an acknowledge bit after all received bytes other than the last byte.

This bit is enabled logic 0 when power is first applied. This bit controls the relationship between the two alarms and the interrupt output. These bits are both set to logic 1 ds3137 when power is first applied.

Alarm when date, hours, minutes, and seconds.