DS1305 DATASHEET PDF

DSE. Pin TSSOP. DSEN Pin TSSOP (Industrial). PIN ASSIGNMENT. DS Serial Alarm Real Time Clock (RTC) VCC2. 1. DS Maxim Integrated Real Time Clock Serial Alarm RTC 3-Wire datasheet, inventory, & pricing. Maxim Integrated DS+: available from 18 distributors. Explore Integrated Circuits (ICs) on Octopart: the fastest source for datasheets, pricing, specs.

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The INT0 pin remains low as long as the status bit causing the interrupt is present and the corresponding interrupt enable bit is set. Time-of-day Alarm 0 can be set by writing to registers 87h to 8Ah.

These bits always read 0 regardless of how they are written. Dual-power supply pins for primary and backup power supplies. The software is.

DS datasheet & applicatoin notes – Datasheet Archive

The DS offers dual-power supplies as well as a battery input pin. No abstract text available Text: Then there’s the alarm and related interrupt stuff, which I’ll soon get to. DC power is provided to the device on this pin. The DS does not writeburst mode.

DS RTC using 3-wire mode

Previous 1 2 Next. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. When connected to GND, standard 3-wire communication is selected. To prevent accidental enabling, only a pattern of enables the trickle charger. The maximum current IMAX would, therefore, be calculated as follows: The DS does not write protect itself in ds13005 configuration.

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Two programmable time of day alarms are provided by the DS Each alarmtrickle charge characteristics of the DS When the INTCN bit is set to a logic 1, a match between the timekeeping registers and the Alarm 0 registers activates the INT0 pin provided that the alarm is enabled and a match between the timekeeping registers and the Alarm 1 registers activate the INT1 pin provided that the alarm is enabled.

Thanks for looking at the code and replying. The Fs1305 does not write protect itself in thiswill power the Address and data bits are transferred in groups of eight. The day register increments at midnight.

Optional trickle charge output to Backup Supply. When all of the mask bits are logic 0, a ds1035 alarm only occurs once per week when the values stored in timekeeping registers 00h to 03h match the values stored in the time-of-day alarm registers.

Dallas Semiconductor

The following paragraphs describe the function of each pin. Thepower the DS Similarly, an alarm is generated every minute when bit 7 of the day, 6 of 22 http: Eachcharacteristics of the DS The simplified schematic of Figure 4 shows the basic components of the tricklevolt typicalVCC1 will power the DS For a single byte. Bit 7 of each of the time-of-day alarm registers are mask bits Table 2.

The INT0 pin can be programmed to be asserted by only Alarm 0 or can be programmed to be asserted by either Alarm ds135 or Alarm 1.

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DS1305 Datasheet PDF

From a quick overlook of the code I’d guess that changing the defines: The INT0 pin is an open-drain output and requires an external pullup resistor. It writes and reads the date and time! The VBAT pin allows the device to be backed up by a non-rechargeable battery. If not used, VBAT must be connect to ground.

Each alarm can generate an interrupt on a programmable combination of. After CE is driven high an address is written to the DS The simplified schematic of Figure 4 shows the basic components of the tricklepower the DS All other patterns disable the trickle charger.

The DSmultiple-byte burst mode. Some differences from DS to DS Time registers datasheer read from address 0x00 through 0x08, and written from address 0x80 through 0x But I’m learning here, so any help would be appreciated! Underwriters Laboratory UL Recognized. After the address, one.

The maximum charging current can be calculated as illustrated in the following example. I have found a library for the DS which uses the SPI mode, so that one should have the logic down for controlling time and alarm registers.