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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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HCSXXX Datenblatt(PDF) 1 Page - Microchip Technology |
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HCSXXX Datenblatt(HTML) 1 Page - Microchip Technology |
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1 / 28 page  2004 Microchip Technology Inc. Preliminary DS41256A-page 1 HCSXXX This document includes the programming specifications for the following devices: 1.0 PROGRAMMING THE HCSXXX All of the KEELOQ® devices are programmed using a serial method. This Serial mode allows KEELOQ devices to be programmed while in users' systems, which increases the flexibility of designing cryptographic encoders, decoders and transponders into electronic systems. While some of the devices are capable of being programmed through wireless communications, the subject of this document is focused on wired programmers that make contact with the KEELOQ products while the components are in- circuit or in a programmer socket. Additionally, this programming specification only applies to all KEELOQ devices listed above in all packages. 1.1 Programming Algorithm Requirements Depending on the device being programmed, the method for entering Programming mode can be achieved through the use of a combination of logic level signals applied to the programming pins. One or two pins are capable of accepting clock signals, while another pin is dedicated to bidirectional data. These pins are detailed in Table 1-1. Additionally, the programming voltage range for VDD is +5V ± 10% for all the KEELOQ devices. There is not a requirement to apply high voltages to any of the pins beyond the level of VDD in order to enter the Programming mode. For more details about pin configurations during programming, refer to Table 1-1. 1.2 Program/Verify Mode The Program/Verify mode for the KEELOQ devices allows programming for all memory locations within the device being programmed. With the exception of the decoders, these pins are also used to verify the memory arrays. • HCS200 • HCS360 • HCS500 • HCS201 • HCS361 • HCS512 • HCS300 • HCS362 • HCS515 • HCS301 • HCS410 • HCS320 • HCS412 Note: For the purpose of this document, “KEELOQ devices” and “KEELOQ products” refers to all of the components listed above. HCSXXX Memory Programming Specification |
Ähnliche Teilenummer - HCSXXX |
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Ähnliche Beschreibung - HCSXXX |
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