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KEELOQ® Authentication products from Microchip
Microchip's patented KEELOQ® code hopping technology is the perfect solution for a variety of authentication devices including remote keyless entry.
- KEELOQ® Decoders
- KEELOQ® Encoders
- KEELOQ® Transcoders
All KEELOQ® Decoders support the following KEELOQ® Encoders:
HCS200, HCS201, HCS300, HCS301, HCS320, HCS360, HCS361, HCS362, HCS365, HCS370, HCS410, HCS412, HCS473 |
KEELOQ® Decoders
Family |
RFQ |
Reception Length Bits |
Transmitters supported |
Op Volt Range |
Funtions |
Other Features |
| HCS500 |
|
66 |
Up to 7 |
3.0 to 5.5 |
S0, 15 Serial Functions |
Full-featured decoder with serial interface to microcontrollers |
| HCS512 |
|
66 |
Up to 4 |
4.0 to 6.0 |
S0, S1, S2, S3, V low ,15 Serial Functions |
Single-chip decoder with secure learning |
| HCS515 |
|
66 |
Up to 7 |
4.5 to 5.5 |
S0, S1, 15 Serial Functions |
Full-featured decoder with serial and parallel interface. On-chip 1Ktransmitter and 1K user EEPROM. |
KEELOQ® Encoders
Family |
RFQ |
Transcode Bit |
Code hopping Bit |
Op Volt Range |
Tunable OSC |
Function Codes |
Other Features |
| HCS101 |
|
66 |
0 |
3.5 to 13.0 |
Yes |
7 |
Fixed code support for non-secure applications, up to 28-bit serial numbers |
| HCS200 |
|
66 |
32 |
3.5 to 13.0 |
No |
7 |
Entry level, Fixed code support, Battery low indicator |
| HCS201 |
|
66 |
32 |
3.5 to 13.0 |
Yes |
7 |
Entry level, Fixed code support, Battery low indicator, step-up voltage operation |
| HCS300 |
|
66 |
32 |
2.0 to 6.3 |
No |
15 |
LED Drive, Overflow bits, Time-out, Battery low indicator |
| HCS301 |
|
66 |
32 |
3.5 to 13.0 |
No |
15 |
LED Drive, Overflow bits, Time-out, Battery low indicator |
| HCS320 |
|
66 |
32 |
3.5 to 13.0 |
No |
16 |
Shift Operation, LED Drive, Overflow bits, Time-out, Battery low indicator |
| HCS360 |
|
67 |
32 |
2.0 to 6.3 |
No |
15 |
2 independent counters |
| HCS361 |
|
67 |
32 |
2.0 to 6.3 |
No |
15 |
2 independent counters |
| HCS362 |
|
69 |
32 |
2.0 to 6.3 |
Yes |
15 |
Queue counter, PLL interface, Timer bits, Programmable time-out |
| HCS365 |
|
69 |
32 |
2.05 to 5.5 |
Yes |
15 |
Dual Encoder Operation, 4 inputs, Queue counter |
| HCS370 |
|
69 |
32 |
2.05 to 5.5 |
Yes |
15 |
Step-up voltage regulation, Dual Encoder Operation, 6 inputs, Queue counter |
| HCS410 |
|
69 |
32 |
2.0 to 6.6 |
Yes |
7 |
Self-powered transponder and encoder, bi-directional authentication, user EEPROM, Queue counter |
| HCS412 |
|
69 |
32 |
2.0 to 6.6 |
Yes |
7 |
Passive Entry Encoder and Transponder, bi-directional authentication, user EEPROM, Queue counter |
KEELOQ® Transcoders
Family |
RFQ |
Transmission Code Length (bits) |
Tuable OSC |
Volt Range |
Function Codes |
| HCS410 |
|
69 |
Yes |
2.0 to 6.6 |
7 |
| HCS412 |
|
69 |
Yes |
2.0 to 6.6 |
7 |
For more information on Microchip KEELOQ® Products call SemiconductorStore at 877-466-9722 or  |
