HCS360_11 Datasheet, PDF (27/40 Pages) Microchip Technology – KEELOQ® Code Hopping Encoder outline and low cost,

HCS360
FIGURE 9-6: MANCHESTER FORMAT SUMMARY (MOD=1)
12
50% Duty Cycle
Preamble
START bit bit 0 bit 2
bit 1
16
TPB
TE TE
LOGIC "0"
LOGIC "1"
STOP bit
31XTE
Preamble
4XTE
Header
Encrypted Portion
of Transmission
Fixed Portion
of Transmission
Guard
Time
FIGURE 9-7:
MANCHESTER PREAMBLE/HEADER FORMAT (MOD=1)
50% Duty Cycle
P1
Preamble
P16
Bit 0 Bit 1
31 x TE Preamble
4 x TE
Data Word
Header Transmission
FIGURE 9-8:
HCS360 NORMALIZED TE VS. TEMP
1.7
Typical
1.6
TE Max.
1.5
1.4
1.3
TE
1.2
1.1
VDD LEGEND
= 2.0V
= 3.0V
= 6.0V
1.0
0.9
0.8
0.7
TE Min.
0.6
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
Temperature ° C
© 2011 Microchip Technology Inc.
DS40152F-page 27