HT1381 DATASHEET PDF

General Description. The HT is a serial timekeeper IC which provides seconds, minutes, hours, day, date, month and year information. HT datasheet, HT circuit, HT data sheet: HOLTEK – Serial Timekeeper Chip,alldatasheet, datasheet, Datasheet search site for Electronic. HTSOPLF from HOLTEK >> Specification: Timekeeper IC, Date Time Format (Date/Month/Year Technical Datasheet: HTSOPLF Datasheet.

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Then, choose either single mode or burst mode to input the data Note that the first data bit to be transmitted on the first falling edge after the last bit of the read command byte is written. When D5 is logic 1, it is PM, otherwise it? The value of the capacity depends on how accurate the crystal is. Holtek reserves the right to alter its products without prior notification.

The clock halt bit must be set to logic 1 oscillator disabled. All other trademarks are the property of their respective owners. The input signal of SCLK is a sequence of a falling edge followed by a rising edge and it is used to synchronize the register data whether read or write. The read or write operating flowcharts are shown on the next page.

These two bits should first be specified in order to read from and write to the register array properly. Both input and output data starts with bit 0. For data input, the data must be read dstasheet the rising edge of SCLK. This is to determine whether a read, write, or test cycle is operated and whether a single byte or burst mode transfer is to occur. Two data transmission modes: Both input and output data starts with bit 0.

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A Hz crystal datashee required to. REST remains at high level. A Hz crystal is required to provide the correct timing.

Data can be delivered 1 byte at a time or in a burst of up to 8 bytes. Copy your embed code and put on your site: When this bit is in high level, the hour mode is selected otherwise it? However, Holtek assumes no responsibility arising from the use of the specifications described. Data contained in the clock register is in binary coded decimal format. Refer to the suggestion table of page 7. The data transfer is illustrated on the next page.

HT1381-8DIPLF PDF Datasheet浏览和下载

In order dataeheet obtain the correct frequency, two additional load capacities C1, C2 are needed. Elcodis is a trademark of Elcodis Company Hy1381.

This table illustrates the correlation between Command Byte and their bits: When this bit is set to logic 1, the clock oscillator is stopped and the chip goes into a low-power standby mode. In order to minimize. Refer to the table shown below and follow the steps to write the data to the chip. Then, choose either single mode or burst mode to input the data. If used generally, unpredictable conditions may occur. Refer to the table shown below and follow the steps to write the data to the chip.

In total, 16 clock pulses are needed for a single byte mode and 72 for burst mode. Two modes are available for transferring the data ht181 the microprocessor and the Command byte For each data transfer, a Command Byte is initiated to specify which register is accessed. Data outputs are read starting with bit 0.

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Holtek Semiconductor Inc. HT Series Datasheets. HT, HT Datasheet.

Maximum input serial clock: The information appearing in this Data Sheet is believed to be accurate at the time of publication. The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for dafasheet that may present a risk to human life due to malfunction or otherwise. Only three wires are required:. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliability.

There are eight registers used to control the month data, etc. The Write Protect Register should be set first before restarting the system or before writing the new data to the system, and it should set as logic 1 in the read cycle.

HT1381 Datasheet PDF

Additional SCLK cycles are ignored. When it is set as? The value of the capacity depends on how accurate the crystal is. For the most up-to-date information, please visit our web site at http: The value of the capacity depends on how accurate the crystal is Holtek reserves the right to alter its products without prior notification.

Data can be written into the designated register only if the Write Protect signal WP is set to logic 0. Data can be de.

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