HCS412I MICROCHIP [Microchip Technology], HCS412I Datasheet - Page 17

• Manufacturer Part Number: HCS412I
• Description: KEELOQ Code Hopping Encoder and Transponder
• Manufacturer: MICROCHIP [Microchip Technology]

TABLE 3-9:
V
Commercial (C):T
Industrial
Time to second button press
Transmit delay from button detect
Debounce delay on button press
Debounce delay on button release
Auto-shutoff time-out period
Long preamble
LED on time
LED off time
LED on time (V
Time to delayed SEED
transmission
Queue Time
Note 1: T
DD
2002 Microchip Technology Inc.
= +2.0 to 6.6V
2: Transmit delay maximum value, if the previous transmission was successfully transmitted.
3: The auto-shutoff time-out period is not tested.
4: The LED times specified for V
5: LED on time if V
intention was to press the combination of buttons.
BP
Parameter
is the time in which a second button can be pressed without completion of the first code word where the
(I): T
DD
ENCODER TIMING SPECIFICATIONS
< V
AMB
AMB
LOW
= 0 C to +70 C
= -40 C to +85 C
DD
Trip Point)
< V
TRIP
specified by V
DD
Symbol
T
T
T
LEDOFF
T
T
T
T
T
LEDON
> V
T
T
T
LPRE
LEDL
DBP
DBR
DSD
QUE
BP
TD
TO
TRIP
Preliminary
specified by V
LOW
Word Time
44 + Code
in the configuration word.
Min.
20
14
18
LOW
Word Time
58 + Code
in the configuration word.
Typ.
480
200
30
20
20
20
64
32
30
3
Word Time
63 + Code
Max.
40
26
22
Unit
HCS412
ms
ms
ms
ms
ms
ms
ms
ms
ms
s
s
DS41099C-page 17
Remarks
Note 1
Note 2
Note 3
Note 4
Note 4
Note 5