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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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Features Real-time clock counts seconds, minutes, hours, date, month, day, year, and leap year to byte, battery-backed, nonvolatile NV RAM for data storage Two time of day Dagasheet Serial interface SPI or standard 3-wire interface Dual-power supply pins for primary and backup power supplies Optional trickle charge output to Backup Supply Underwriters Laboratory UL Recognized.

I have also found a library for another chip, the related DS, datasheeh also uses 3-wire protocol, but of course the functionality and meaning of the internal registers are somewhat different. An alarm is generated every hour when bit 7 of the day and hour alarm registers is set to a logic 1. The time, calendar, and alarm are set or initialized by writing the appropriate register bytes.

Each alarm can generate an interrupt on a programmable combination of seconds, minutes, datashet, and day.

CCS :: View topic – Test code to test dsc

Time registers are read from address 0x00 through 0x08, and written from address 0x80 through 0x Each alarm can generate an interrupt on a programmable combination of seconds, minutes, hoursThis register controls the trickle charge characteristics of the DS But I’m learning here, so any help would be appreciated! Bit 6 of the hours register is defined as the or hour mode select bit. Ground Serial Interface Mode. Thepower the DS These registers always read 0 regardless of how they are written.


The DS does notto the DS The simplified schematic of Figure 4 shows the basic components of the tricklepower the DS The simplified schematic of Figure 4 shows the basic components of the tricklevolt typicalVCC1 will power the DS I basically need to know if this is a feasible way to go, before I go waste a lot of hours trying to get it to not work. Configuration 2 illustrates the DS being backed up by a rechargeable energy source.

When high, the write protect bit prevents a write operation to any register, including bits 0, 1, 2, and 7 of the control register. Each alarm can generate ancontrols the trickle charge characteristics of the DS The DS can be run in either hour or hour mode.

Some differences from DS to DS Upon initial power-up, the state of the WP bit is undefined. Note that some bits are set to 0. In systems using the trickle charger, the rechargeable energy source is connected to this pin.

Configuration 3 shows the DS in battery operate mode where the device is powered only by a single battery. After the address, one or more data bytes can be dds1305 or read.

After the address, one. UL recognized to ensure against reverse charging current when used in conjunction with a lithium battery. To find the component your looking for, either search by Part Number or visit the relative department.

The contents of the time, calendar, and alarm registers are in the BCD format. Terminating a write before the last bit is sent aborts the write for that byte.



I would need to convert that library to use 3-wire. The simplified schematic of Figure 3 shows the basic components of the trickle charger. T heDS The trickle-charge select TCS bits bits 4—7 control the selection of the trickle charger. It writes and reads the date and time!

DS1305 Datasheet PDF

The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The DS does not write protect itself in this configuration. The dual power supplies support a programmable trickle charge circuit that allows a rechargeable energy source such as a super cap or rechargeable battery to be used dstasheet a backup supply. Datashee note that registers 12h to 1Fh read and registers 92h to 9Fh are reserved.

Pin Description Pin Number Description 1. Optional trickle charge output to Backup Supply. Illogical time and date entries result in undefined operation. Maxim Integrated Products DS Many thanks, you’ve helped me straighten certain things rs1305. The INT0 pin is an active-low output of the DS that can be used as an interrupt input to a processor. The day register increments at midnight.

I will try the modified code in the next few hours, and post my results. However, the countdown chain is reset when the seconds register is written.

Time-of-day Alarm 0 can be set by writing to registers 87h to 8Ah. From a quick overlook of the code I’d guess that changing the defines: