HCS512-I/SO Microchip Technology, HCS512-I/SO Datasheet - Page 2

• Manufacturer Part Number: HCS512-I/SO
• Description: IC CODE HOPPING DECODER 18-SOIC
• Manufacturer: Microchip Technology
• Type: Code Hopping Decoderr

Specifications of HCS512-I/SO

• Applications: Remote Secure Access, Keyless Entry
• Mounting Type: Surface Mount
• Package / Case: 18-SOIC (7.5mm Width)
• Ic Function: Code Hopping Decoder IC
• Supply Voltage Range: 4V To 6V
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: SOIC
• No. Of Pins: 18
• Termination Type: SMD
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

HCS512
Clarifications/Corrections to the Data Sheet:
In the Device Data Sheet (DS40151D), the following
clarifications and corrections should be noted.
1. Features: Description
Page 2 of DS40151D, 1st paragraph, 2nd sentence
reads:
2. Features: Electrical Characteristics for
Page 16 of DS40151D, Table 9-2 AC Characteristics,
Symbol T
3. Features: Normal Learning (Serial
Page 12 of DS40151D, Section 7.1 reads:
The text should read:
4. Features: Secure Learning (Seed
Page 12 of DS40151, Section 7.2 reads:
The text should read:
DS80124B-page 2
3.0 volts to 6.0 volts
It should read:
4.0 volts to 6.0 volts
3V < V
<10%
The conditions should read:
4.0V < V
<10%
For 28-bit serial number encoders (66/67-bit trans-
missions):
For 28-bit serial number encoders (66/67-bit trans-
missions):
For 60-bit seed encoders:
For 60-bit seed encoders:
SourceH = Seed
always zero)
SourceL = Seed
SourceH = 6H + 28 bit Serial Number
SourceL = 2H + 28 bit Serial Number
SourceH = 6
SourceL = 6
SourceH = Seed
SourceL = Seed
HCS512
Number Derived)
Derived)
E
conditions reads:
DD
DD
< 6V Oscillator components tolerance
<6V Oscillator components tolerance
16
16
+ 28 bit Serial Number
+ 28 bit Serial Number
Lower 32 bits
Lower 32 bits
Upper 28 bits
Upper 28 bits
(with upper 4 bits
Example:
Seed = xxxDEF987654321
28-bit Serial Number: 1234567
SourceH = 123DEF9
SourceL = 87654321
32-bit Serial Number: 74389012
SourceH = 438DEF9
SourceL = 87654321
Note:
The upper 12 bits of the SourceH are
always the upper 12 bits of a 28-bit serial
number. If a 32-bit serial number is used,
the Most Significant nibble is ignored (see
example).
16
16
16
16
 2002 Microchip Technology Inc.
16
16
16