HT2040A 데이터 시트보기 (PDF) - Holtek Semiconductor
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HT2040A Datasheet PDF : 9 Pages
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HT2040A
Functional Description
The HT2040A provides 10 different lighting
configurations. Each lighting configuration is
called a group. A group is divided into sections
(up to 8 sections maximum) where each section
contains exactly one pattern. The patterns and
the corresponding sections can be programmed
into a group from a repository of up to 23 differ-
ent patterns. The default option for the chip is
12 patterns with 10 pre-programmed groups.
The groups can be individually selected by us-
ing the DK1, SK2, and K3~K6 pins, where each
pin has 2 functions that are decided by the
status of the MODE pin. All groups will be
displayed by momentarily connecting SK2 to
VDD with the MODE pin being connected to
VSS. Given this, the HT2040A provides a very
versatile and easy way of controlling lamps.
If the MODE pin is not connected to VDD and
power is turned on, the system will enable the
DEMO mode. But if the MODE pin is connected
to VDD, the system will show the group assign-
ment of each pin as shown in the following
table.
Selected Pin
MODE
Open or VSS VDD
active high
DK1
—
Show
Group-5
momentarily Demo function —
active high
SK2
—
Show
Group-6
momentarily One key show —
K3 (active high)
Show Group-1
Show
Group-7
K4 (active high)
Show Group-2
Show
Group-8
K5 (active high)
Show Group-3
Show
Group-9
K6 (active high)
Show Group-4
Show
Group-10
Group List
The available 10 groups in which the lamps can
be displayed are illustrated in the following
diagram. Each group is comprised by sections
where each section contains only one pattern.
The approximate time of each section is based
upon the 60Hz AC power frequency.
4
26th Mar ’97
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