Holtek Semiconductor HT2040A
The HT2040A is a low cost, low power CMOS LSI chip designed for use in Christmas lighting control products. It provides 4 SCR outputs to control the lamps. The lamps can display up to 10 different groups of lighting patterns, where each pattern or pattern group is chosen by appropriate input keys.| Part No. | HT2040A |
|---|---|
| Datasheet | HT2040A Download |
| Manufacturer |  Holtek Semiconductor |
| Description | Christmas Light Controller |
| Buy | Stock & Price |
FEATURES
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● Operating voltage: 4.5V~5.5V 4 SCR direct drive outputs 10 different groups of lighting patterns Up to 8 patterns for each group Demonstration function One key activation function
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● Up to 23 patterns can be programmed inside Built-in PLL circuit 50Hz or 60Hz AC power supply applications Default 12 patterns for standard applications
GENERAL DESCRIPTION
It provides 4 SCR outputs to control the lamps. The available 10 groups of lighting patterns can all be displayed automatically or sequentially using a single key. (12 patterns and 10 pre-programmed groups are provided by default.) The internal PLL circuit allows synchronized control of the SCRs at either 50Hz or 60Hz AC supply voltage. Pin Assignment Block Diagram DataShee DataSheet4U.com 1 26th Mar ’97 DataSheet4U.com DataSheet 4 U .com HT2040A Pad Coordinates Pad No. 1 2 3 4 5 6 7 8 Unit: mil X –46.47 –46.47 –46.47 –46.47 –46.47 –34.74 38.82 46.47 Y –0.17 –7.01 –14.66 –32.22 –42.59 –42.59 –42.59 –42.59 Pad No.
