hcs410 Microchip Technology Inc., hcs410 Datasheet - Page 30

• Manufacturer Part Number: hcs410
• Description: Keeloq Code Hopping Encoder And Transponder Keeloq Code Hopping Encoder And Transponder
• Manufacturer: Microchip Technology Inc.

HCS410
TABLE 5-5:
FIGURE 5-3:
DS40158E-page 30
V
Commercial
Industrial
V
Commercial
Industrial
Symbol
Symbol
T
T
DD
DD
T
T
T
T
START
START
T
T
STOP
STOP
Note: The timing parameters are not tested but derived from the oscillator clock.
Note: The timing parameters are not tested but derived from the oscillator clock.
T
T
T
T
T
HOP
T
T
HOP
T
—
—
FIX
FIX
= +2.0V to 6.3V
= +2.0V to 6.3V
E
H
G
E
H
G
P
P
Basic pulse element
Preamble duration
Header duration
Start bit
Code hopping duration
Fixed code duration
Stop bit
Guard time
Total transmit time
Basic pulse element
Preamble duration
Header duration
Start bit
Code hopping duration
Fixed code duration
Stop bit
Guard time
Total transmit time
(C): T
(I): T
(C): T
(I): T
Characteristic
Characteristic
CODE WORD TRANSMISSION TIMING PARAMETERS—MANCHESTER MODE
TYPICAL VOLTAGE TRIP POINTS
AMB
AMB
AMB
AMB
= 0°C to +70°C
= -40°C to +85°C
= 0°C to +70°C
= -40°C to +85°C
Volts (V)
Number
Number
of T
of T
210
210
32
64
74
32
32
64
74
32
1
4
2
2
1
4
2
2
E
E
5.0
4.6
4.4
4.2
4.0
3.8
2.8
2.6
2.4
2.2
2.0
1.8
1.6
4.8
-40
720.0
23.04
46.08
53.28
151.2
360.0
11.52
23.04
26.64
Min.
2.88
1.44
Min.
1.44
0.72
0.72
1.44
23.0
11.5
75.6
Preliminary
BSL1 = 0,
BSL1 = 1,
BSL0 = 0
BSL0 = 0
800.0
25.60
51.20
59.20
400.0
12.80
25.60
29.60
Typ.
3.20
1.60
1.60
25.6
Typ.
1.60
0.80
0.80
12.8
84.0
168
0
V
V
LOW
LOW
sel = 0
50
56.32
28.16
880.0
28.16
65.12
184.8
440.0
14.08
32.56
Max.
Max.
sel = 1
3.52
1.76
1.76
28.2
1.76
0.88
0.88
14.1
92.4
Code Words Transmitted
Code Words Transmitted
85
V
Number
Number
Temp (C)
LOW
of T
of T
210
210
32
64
74
32
32
64
74
32
1
4
2
2
1
4
2
2
E
E
360.0
11.52
23.04
26.64
180.0
11.52
13.32
Min.
1.44
0.72
0.72
75.6
11.5
Min.
5.76
0.72
0.36
0.36
37.8
 2001 Microchip Technology Inc.
5.8
BSL1 = 0,
BSL0 = 1
BSL1 = 1,
Nominal V
BSL0 = 1
400.0
12.80
25.60
29.60
12.80
Typ.
1.60
0.80
0.80
12.8
84.0
200.0
Typ.
6.40
0.80
0.40
14.8
0.40
42.0
6.4
Legend
LOW
440.0
14.08
28.16
32.56
Max.
1.76
0.88
0.88
14.1
92.4
220.0
14.08
16.28
Max.
7.04
0.88
0.44
0.44
46.2
7.0
trip point
Units
Units
ms
ms
ms
ms
ms
ms
ms
ms
µ
ms
ms
ms
ms
ms
ms
ms
ms
µ
s
s