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HCS412SN Datenblatt(PDF) 30 Page - Microchip Technology

Teilenummer HCS412SN
Bauteilbeschribung  KEELOQ Code Hopping Encoder and Transponder
PDF  44 Pages
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Hersteller  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

HCS412SN Datenblatt(HTML) 30 Page - Microchip Technology

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HCS412
DS41099C-page 30
Preliminary
© 2002 Microchip Technology Inc.
5.0
CONFIGURATION SUMMARY
Table 5-1 summarizes the available HCS412 options.
TABLE 5-1:
HCS412 CONFIGURATION SUMMARY
Symbol
Reference
Section
Description
KEY1
64-bit Encoder Key 1
SDVAL
Section 3.2.7
60-bit seed value transmitted in CH Mode if (SEED = 1 AND TMPSD = 0) or if (SEED
= 0 AND TMPSD = 1).
KEY2
LSB 60 bits of Encoder Key 2. 4 MSb’s set to XXXX. (Note 1)
TCODE
Section 4.3.3
28-bit Transport Code
AFSK
Section 3.4.5
PLL Interface Select.
0 = ASK
1 = FSK
RFEN
Section 2.2.7
RF Enable output active.
0 = Disable
1 = Enable
LPRE
Section 3.4.7
Long Preamble Enable.
0 = Disable
1 = Enable
QLVS
Section 3.4.8
Special Features Enable.
0 = Disable
1 = Enable
OSCT
Section 2.2.5
Oscillator Tune Value.
1000b
Fastest
0000b
Nominal
0111b
Slowest
VLOWSEL
Section 2.2.6
Low Voltage Trip Point Select
0 = 2.2 Volt
1 = 4.4 Volt
IDAMP
Section 4.4.3
Intelligent Damping Enable
0 = Enable
1 = Disable
LFSP
Section 4.4
LF Communication Special Features
LFSP1:0
Active Feature
00b
None
01b
Anticollision
10b
Prox Activation
11b
RF Echo
LFBSL
Section 4.2
IFF Baud Rate Select (LFTE)
0 = 200 us
1 = 100 us
MOD
Section 3.3
DATA pin modulation format
0 = PWM
1 = Manch
CWBE
Section 3.4.3
Code word Blanking Enable
0 = Disable
1 = Enable
MTX4
Section 3.4.1
Minimum Four Code words
0 = Disable
1 = Enable
RFBSL
Section 3.3
Transmission Baud Rate (RFTE)
RFBSL1:0
PWM
Manch
00b
400 us
800 us
01b
200 us
400 us
10b
100 us
200 us
11b
100 us
200 us
S2LC
Section 3.4.1
S2/RFEN/LC1 Pin Configuration bit.
0 = LC
1 = S Input
—
Reserved, Set to 0
—
—
TMPSD
Section 3.2.7
Temporary Seed Enable (Note 1)
0 = Disable
1 = Enable
SEED
Section 3.2.7
Seed Transmission Enable (Note 1)
0 = Disable
1 = Enable
XSER
Section 3.2.5
Extended Serial number
0 = Disable
1 = Enable
DINC
Section 3.4.4
Delayed Increment
0 = Disable
1 = Enable
DISC
Section 3.2.6
10-bit Discrimination value
OVR
Section 3.2.4
Counter Overflow Value
SER
32-bit Serial Number
USR
64-bit user EEPROM area
CNT
16-bit Synchronization counter
—
Reserved set 0000h
Note 1: If IFF with KEY2 is enabled only if TMPSD = 1 and SEED = 1.



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