HCS473T/SN Microchip Technology, HCS473T/SN Datasheet - Page 36
HCS473T/SN
Manufacturer Part Number
HCS473T/SN
Description
IC KEELOQ 3AXIS TRANSCODER 8SOIC
Manufacturer
Microchip Technology
Series
KEELOQ®r
Type
Code Hopping Encoder and Transponderr
Specifications of HCS473T/SN
Applications
Access Control Systems
Mounting Type
Surface Mount
Package / Case
*
Lead Free Status / RoHS Status
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HCS473
FIGURE 3-23:
DS40035C-page 34
Wake-up Sequence
Transponder Select Sequence
ACK Response Sequences Concluding with CRC
Data Response Sequences Concluding with CRC
- Present Transport Code
- Write
- Anticollision Off
- IFF
- Read
- Request Hopping Code
ASK
FSK
ASK
FSK
ASK
FSK
ASK
FSK
Inductive In (LC)
Inductive In (LC)
Inductive In (LC)
Inductive In (LC)
PLL (RFEN)
PLL (RFEN)
PLL (RFEN)
PLL (RFEN)
PLL (RFEN)
PLL (RFEN)
PLL (RFEN)
PLL (RFEN)
RF (DATA)
RF (DATA)
RF (DATA)
RF (DATA)
RF (DATA)
RF (DATA)
RF (DATA)
RF (DATA)
RFEN BEHAVIOR DURING LF COMMUNICATION
CRC
CRC
12-Bit VID
1 LF
T
SF
TE
Response
Response
Time
Time
Preliminary
TID=0
TID=1 TID=2 TID=3
1 LF
TE
1 LF
T
TE
CMD
Command
Command
1 LF
T
CMD
TE
Command
Next
2002 Microchip Technology Inc.
Command
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