HCS412I MICROCHIP [Microchip Technology], HCS412I Datasheet - Page 30

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

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