GENERAL DESCRIPTION

The HCS362 is a code hopping encoder designed for secure Remote Keyless Entry (RKE) systems. The HCS362 utilizes the KEELOQ® code hopping technology, which incorporates high security, a small package outline and low cost, to make this device a perfect solution for unidirectional remote keyless entry systems and access control systems.

FEATURES

Security

• Programmable 28/32-bit serial number

• Two programmable 64-bit encryption keys

• Programmable 60-bit seed

• Each transmission is unique

• 69-bit transmission code length

• 32-bit hopping code

• 37-bit fixed code (28/32-bit serial number,

4/0-bit function code, 1-bit status, 2-bit CRC/time,

2-bit queue)

• Encryption keys are read protected

Operation

• 2.0V – 6.3V operation

• Four button inputs

• 15 functions available

• Selectable baud rates and code word blanking

• Programmable minimum code word completion

• Battery low signal transmitted to receiver with

programmable threshold

• Non-volatile synchronization data

• PWM and Manchester modulation

Other

• RF Enable output – PLL interface

• Easy to use programming interface

• On-chip EEPROM

• On-chip tunable oscillator and timing components

• Button inputs have internal pull-down resistors

• Current limiting on LED output

• Minimum component count

FEATURES

Security

• Programmable 28/32-bit serial number

• Two programmable 64-bit encryption keys

• Programmable 60-bit seed

• Each transmission is unique

• 69-bit transmission code length

• 32-bit hopping code

• 37-bit fixed code (28/32-bit serial number,

4/0-bit function code, 1-bit status, 2-bit CRC/time,

2-bit queue)

• Encryption keys are read protected

Operation

• 2.0V – 6.3V operation

• Four button inputs

• 15 functions available

• Selectable baud rates and code word blanking

• Programmable minimum code word completion

• Battery low signal transmitted to receiver with

programmable threshold

• Non-volatile synchronization data

• PWM and Manchester modulation

Other

• RF Enable output – PLL interface

• Easy to use programming interface

• On-chip EEPROM

• On-chip tunable oscillator and timing components

• Button inputs have internal pull-down resistors

• Current limiting on LED output

• Minimum component count