KEELOQ CODE HOPPING ENCODER
M
FEATURES
Security
• • • • • • Programmable 28/32-bit serial number Programmable 64-bit encryption key Each transmissio...
Description
M
FEATURES
Security
Programmable 28/32-bit serial number Programmable 64-bit encryption key Each transmission is unique 67-bit transmission code length 32-bit hopping code 35-bit fixed code (28/32-bit serial number, 4/0-bit function code, 1-bit status, 2-bit CRC) Encryption keys are read protected
HCS360
Code Hopping Encoder
PACKAGE TYPES
PDIP, SOIC S0 S1 S2 S3 1 HCS360 2 3 4 8 7 6 5 VDD LED PWM VSS
Operating
2.0-6.6V operation Four button inputs - 15 functions available Selectable baud rate Automatic code word completion Battery low signal transmitted to receiver Nonvolatile synchronization data PWM and Manchester modulation
HCS360 BLOCK DIAGRAM
Oscillator Reset circuit LED LED driver Controller Power latching and switching
EEPROM
Encoder
Other
Easy to use programming interface On-chip EEPROM On-chip oscillator and timing components Button inputs have internal pull-down resistors Current limiting on LED output Minimum component count
PWM 32-bit shift register
VSS VDD
Button input port
Enhanced Features Over HCS300
48-bit seed vs. 32-bit seed 2-bit CRC for error detection 28/32-bit serial number select Two seed transmission methods PWM and Manchester modulation IR modulation mode
S3 S2 S1 S0
DESCRIPTION
The HCS360 is a code hopping encoder designed for secure Remote Keyless Entry (RKE) systems. The HCS360 utilizes the KEELOQ code hopping technology, which incorporates high security, a small package outline and low c...
Similar Datasheet