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.

Author: Vuran Malrajas
Country: Bosnia & Herzegovina
Language: English (Spanish)
Genre: Love
Published (Last): 28 April 2005
Pages: 242
PDF File Size: 4.90 Mb
ePub File Size: 12.40 Mb
ISBN: 966-7-91172-858-3
Downloads: 38060
Price: Free* [*Free Regsitration Required]
Uploader: JoJoktilar

In order to minimize. 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. The test mode is used by Holtek only for testing purposes. Only three wires are required: Additional SCLK cycles are ignored.

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.

Pad Description Pad No. Data outputs are read starting with bit 0. Both input and output data starts with bit 0. 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 application that may present a risk to human life due to malfunction or otherwise.


Only three wires are required: The value of the capacity depends ht138 how accurate the crystal is. Then, choose either single mode or burst mode to input the data. Holtek reserves the right to alter its products without prior notification.

Download datasheet Kb Share this page. In order to obtain the correct frequency, two additional datashset capacities C1, C2 are needed. For the most up-to-date information, please visit our web site at http: Refer to the suggestion table of page 7. Functional operation of this device at other conditions beyond those listed in datazheet specification is not implied and prolonged exposure to extreme conditions may affect device reliability.

These are stress ratings only.

HT1381 Datasheet PDF

When this bit is written to logic 0, the clock will start. In total, 16 clock pulses are needed for a single byte mode and 72 for burst mode.

When it is set as? One is in single-byte mode ad the other is in multiple-byte mode. Two data transmission modes: This table illustrates the correlation between Command Byte and their bits: However, Holtek assumes no responsibility arising from the use of the specifications described.


Data can be written into the designated register only if the Write Protect signal WP is set to logic 0. Refer to the table shown below and follow the steps to write the datashete to the chip. Data can be de- livered 1 byte at a time burst bytes When D5 is logic 1, dataaheet is PM, otherwise it?

HT/HT datasheet & applicatoin notes – Datasheet Archive

The number of days in each month and leap years are automatically adjusted. Elcodis is a trademark of Elcodis Company Ltd.

The value of the capacity depends on how accurate the crystal is. Taipei Office 5F, No. For the most up-to-date information, please visit our web site at http: When this bit is in high level, the hour mode is selected otherwise it?

HT1381-8DIPLF PDF Datasheet浏览和下载

The REST pin is also used to terminate either single-byte or burst mode data format. There are eight registers used to control the month data, etc. A Hz crystal is required to. If used generally, dattasheet conditions may occur. The value of the capacity depends on how accurate the crystal is