DatasheetQ Logo
Electronic component search and free download site. Transistors,MosFET ,Diode,Integrated circuits

HT6P12 View Datasheet(PDF) - Holtek Semiconductor

Part Name
Description
Manufacturer
HT6P12
Holtek
Holtek Semiconductor Holtek
HT6P12 Datasheet PDF : 17 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
HT6P12
received 24 bits of customer code are inter-
preted as control signals.
Output function selection
When the last 4 bits (bits 21~24) of the received
24 bits of customer code are interpreted as 4
kinds of control signal outputs, each control
signal output controls an output function.
There are totally 8 kinds of output functions,
i.e., ARM/ DISARM, PANIC, ON/OFF, Q3,
ARM, DISARM, MUTE, and FIND_CAR, which
are further classified into three types A, B, and
C. Each type consists of 4 different output func-
tions. The mapping of the last 4 bits to the 4
kinds of output functions is as shown.
The output type is defined by the option table.
Arm/Disarm control
If the arm and disarm control signals are set on
the same data bit (Output Type A or C), the arm
and disarm states are toggle-controlled by the
same key of the encoder. But, if the arm and
disarm control signals are set as 2 different
data bits (Output Type B), the arm and disarm
states are separately controlled.
After the disarm control signal has been re-
ceived, and the LSI is in the arm state, the car
lamp will flash twice successively (defined by
the “ArmDisarm lamp flash times” in the op-
tion table), the chirp sound will be output twice
continuously (defined by the “ArmDisarm
chirp sound times” in the option table), the
UNLOCK pin will be active high, a duration
(defined by the “UNLOCK Time” in the option
table), the ARM pin will be active low, and the
alarm system will enter the disarm state. On
the other hand, after the arm control signal has
been received, the car lamp will flash once (de-
fined by the “DisarmArm lamp flash times” in
the option table), the LED will flash at 1Hz rate
continuously (defined by the “Arm state LED
flash period”), the chirp sound will be output
once (defined by the “DisarmArm chirp sound
times” in the option table), the LOCK pin will
be active high, a daration (defined by the
“LOCK Time” in the option table), the ARM pin
will be active high, and the alarm system will
enter the arm state. In addition, the duty of the
chirp sound and lamp flash are both settable in
the option table.
Fig.1 Arm/Disarm Timing
9
2nd Oct ’97

Share Link: 

datasheetq.com  [ Privacy Policy ]Request Datasheet ] [ Contact Us ]