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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When this bit is set to a logic 1, the oscillator is stopped and the DS is placed into a low-power standby mode with a current drain of less than nA when power is supplied by VBAT or VCC2. UL recognized to ensure against reverse charging current when used in conjunction with a lithium battery. The software is. Quartz motorola Text: Refer to Applications Note Upon initial power-up, the state of the WP bit is undefined.

The INT0 pin can be programmed to be asserted by only Alarm 0 or can be programmed to be asserted by either Alarm 0 or Alarm 1. Maxim Integrated Products DS Terminating a write before the last bit is sent aborts the write for that byte. All other patterns disable the trickle charger. Ground Serial Interface Mode. The INT0 pin is an active-low output of the DS that can be used as an interrupt input to a processor.

Yes I definitely need to change the register address defines. Additional error is added by crystal frequency drift caused by temperature shifts. The DS contains two time-of-day alarms. The DS offers dual-power supplies as well as a battery input pin.

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The simplified schematic of Figure 4 shows the basic components of the tricklevolt typicalVCC1 will power the DS These registers always read 0 regardless of how they are written. When reading in burst mode, the user copy is static while the internal registers continue to increment. Each alarm can generate an interrupt on a.

This is the secondary power supply pin. Some differences from DS to DS Hello, I’m doing a dw1305 with the Arduino Mega, and I’m looking for a way to communicate with the DS real time clock, but I need to use the so-called 3-wire mode, not the 4-wire “true” SPI everyone else seem to be using.

Bit 7 of each of the time-of-day alarm registers are mask bits Table 2. DC power is provided to rs1305 device on this pin.

DS RTC using 3-wire mode

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.

Time registers are read from address 0x00 through 0x08, and written from address 0x80 through 0x The DS can datashete be driven by an external The chip-enable signal must be asserted high during a read or a write for both 3-wire and SPI communication.

I have also found a library for another chip, the related DS, which also uses 3-wire protocol, but of course the functionality and meaning of the internal registers are somewhat different. Illogical time and date entries result in undefined operation.

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Eachcharacteristics of the DS The INT1 pin remains low as long as the status bit causing the interrupt is present and the corresponding interrupt enable bit is set. The internal oscillator is designed for operation with a crystal having a specified load capacitance of 6pF. To find the component your looking for, either search by Part Number or de1305 the relative department.

DS1305 Datasheet PDF

When VCC1 is less than. Initial power-on state The user determines diode and resistor selection according to the maximum current desired for battery or super cap charging.

Also the CE chip enable is connected to pin The INT0 pin remains low as long as the status bit causing the interrupt is present and the corresponding interrupt enable bit is set. When connected to GND, standard 3-wire communication is selected. Therefore, the WP bit should be cleared before attempting to write to the device. This allows an easy interface to 3V logic in mixed supply systems.

Pin Description Pin Number Description 1.