HT1380A HOLTEK [Holtek Semiconductor Inc], HT1380A Datasheet
HT1380A
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HT1380A Summary of contents
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... Rev. 1.00 HT1380A/HT1381A Serial Timekeeper Chip General Description The HT1380A/HT1381A is a serial timekeeper IC which provides seconds, minutes, hours, day, date, =2V, DD month and year information. The number of days in each month and leap years are automatically adjusted. The HT1380A/HT1381A is designed for low power consumption and can operate in two modes: one is the 12-hour mode with an AM/PM indicator, the other is the 24-hour mode ...
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... CMOS X1 I CMOS X2 O CMOS REST I CMOS I/O I/O CMOS SCLK I CMOS VDD � CMOS Rev. 1.00 HT1380A/HT1381A ( Chip size: 1136 × 900 (μ -456.985 -456.985 -456.985 -455.590 -466.000 -466.000 -466.000 465.966 465.966 465 ...
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... "H" Input Voltage "L" Input Voltage IL 5V Note specified with SCLK, I/O, REST open. The clock halt bit must be set to logic 1 (oscillator disabled). STB Rev. 1.00 HT1380A/HT1381A Storage Temperature ............................-50˚C ~ 125˚C +0.3V Operating Temperature ...........................-40˚C ~ 85˚C DD Min. Typ. Conditions — — — — — — — — ...
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... Clock Frequency SCLK t /t Clock Rise and Fall Time Reset to Clock Setup CC t Clock to Reset Hold CCH t Reset Inactive Time CWH t Reset to I/O High Impedance CDZ Rev. 1.00 HT1380A/HT1381A Test Conditions Min. Typ. V Conditions DD 2V — 200 — 3V — 100 — 5V — 50 — 2V — ...
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... Two modes are available for transferring the data between the microprocessor and the HT1380A/ HT1381A. One is in single-byte mode and the other is in multiple-byte mode. The HT1380A/HT1381A also contains two additional bits, the clock halt bit (CH) and the write protect bit (WP). These bits control the operation of the oscillator and so ...
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... In writing a data byte with HT1380A/HT1381A, the read/write should first set as R/W=0 in the Command Byte and follow with the corresponding data register on the rising edge of the next eight SCLK cycles. Additional SCLK cycles are ignored. Data inputs are entered starting with bit 0. In reading a data on the register of HT1380A/ HT1381A, R/W=1 should first be entered as input. The data bit outputs on the falling edge of the next eight SCLK cycles. 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. Additional SCLK cycles re-transmits the data bytes as long as REST remains at high level ...
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... Min. Typ. — 32.768 — — — 9.0 In using the HT1380A/HT1381A, set first the WP and and wait for about 3 seconds, the oscillator will generate the clocks for internal use. Then, choose either single mode or burst mode to input the data. The read or write operating flowcharts are shown on the next page Max. Unit — kHz 50 kΩ ...
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... Note reading data byte from HT1380A/HT1381A register, the first data bit to be transmitted at the first falling edge after the last bit of the command byte is written. Rev. 1.00 HT1380A/HT1381A ...
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... Application Circuit Note order to obtain the correct frequency recommended to use a crystal with a load capacitance of 9.0pF not recommended to connect load capacitors to the X1 and X2 pins. If the power line is noisy recommended to add R1 and C1 for filtering out noise. Rev. 1.00 HT1380A/HT1381A ...
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... E 0.016 F 0.050 G ― H 0.295 I ― Symbol Min. A 9.02 B 6.10 C 3.18 D 3.18 E 0.41 F 1.27 G ― H 7.49 I ― Rev. 1.00 HT1380A/HT1381A ) # " Dimensions in inch Nom. ― ― ― ― ― ― 0.100 ― 0.375 Dimensions in mm Nom. ― ― ― ― ― ― 2.54 ― 9.53 10 Max. ...
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... H 0.007 α 0° Symbol Min. A 5.79 B 3.81 C 0.30 C' 4.78 D ― E ― F 0.10 G 0.41 H 0.18 α 0° Rev. 1.00 HT1380A/HT1381A / 0 = Dimensions in inch Nom. Max. ― 0.244 ― 0.157 ― 0.020 ― 0.197 ― 0.069 0.050 ― ― 0.010 ― 0.050 ― 0.010 ― 8° Dimensions in mm Nom ...
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... Reel Dimensions SOP 8N (150mil) Symbol Description A Reel Outer Diameter B Reel Inner Diameter C Spindle Hole Diameter D Key Slit Width T1 Space Between Flange T2 Reel Thickness Rev. 1.00 HT1380A/HT1381A , Dimensions in mm 330.0±1.0 100.0±1.5 13.0 +0.5/-0.2 2.0±0.5 12.8 +0.3/-0.2 18.2±0 June 15, 2012 ...
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... B0 Cavity Width K0 Cavity Depth t Carrier Tape Thickness C Cover Tape Width Rev. 1.00 HT1380A/HT1381A ...
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... Holtek's products are not authorized for use as critical components in life support devices or systems. Holtek reserves the right to alter its products without prior notification. For the most up-to-date information, please visit our web site at http://www.holtek.com.tw. Rev. 1.00 HT1380A/HT1381A 14 June 15, 2012 ...