HCS301-I/SN Microchip Technology, HCS301-I/SN Datasheet - Page 4

• Manufacturer Part Number: HCS301-I/SN
• Description: IC CODE HOPP ENCODR 15FUNC 8SOIC
• Manufacturer: Microchip Technology
• Type: Code Hopping Encoderr

Specifications of HCS301-I/SN

• Package / Case: 8-SOIC (3.9mm Width)
• Applications: Remote Secure Access, Keyless Entry
• Mounting Type: Surface Mount
• Product: Encoder
• Logic Family: HCS
• Number Of Bits: 32
• Supply Voltage (max): 13 V
• Supply Voltage (min): 3.5 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: SMD/SMT
• Ic Function: Code Hopping Encoder
• Brief Features: Each Transmission Is Unique, 66-bit Transmission Code Length
• Supply Voltage Range: 3.5V To 13V
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes
• Digital Ic Case Style: SOIC
• No. Of Pins: 8
• Termination Type: SMD
• Filter Terminals: SMD
• Leaded Process Compatible: No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

HCS301
FIGURE 1-2:
FIGURE 1-3:
NOTE: Circled numbers indicate the order of execution.
DS21143B-page 4
EEPROM Array
Serial Number
Sync Counter
Crypt Key
5
Perform Function
Indicated by
Button Press
button press
Information
BUILDING THE TRANSMITTED CODE WORD (ENCODER)
BASIC OPERATION OF RECEIVER (DECODER)
1
2
Received Information
Serial Number
Check for
Match
Synchronization
Encrypted Data
Decrypted
K
Decryption
Algorithm
32 Bits of
Counter
EE
Encryption
Algorithm
L
K
3
OQ
Button Press
EE
Information
L
OQ
Transmitted Information
Serial Number
4
Manufacturer Code
EEPROM Array
Check for
Serial Number
Match
Sync Counter
Crypt Key
2001 Microchip Technology Inc.
Encrypted Data
32 Bits