HCS410/WM Microchip Technology, HCS410/WM Datasheet - Page 5

• Manufacturer Part Number: HCS410/WM
• Description: IC CODE HOPPING ENCODER SMD
• Manufacturer: Microchip Technology
• Series: KEELOQ®r
• Type: Code Hopping Encoder and Transponderr

Specifications of HCS410/WM

• Applications: Access Control Systems
• Package / Case: *
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Mounting Type: -

3.3
The responses from the HCS410/WM are in PPM for-
mat. See Figure 3-3 for additional information. Every
response from the HCS410 is preceded by a “2 bit pre-
amble” of 01
3.4
The 16/32-bit response to a 16/32-bit challenge, is
transmitted once, after which the device is ready to
accept another command. The same applies to the
result of a Read command. The opcode written to the
device specifies the challenge length and algorithm
used. The response always starts with a leading pre-
amble of 01
3.5
The decoder can write to USER[0:3], SER[0:1], and the
configuration word in the EEPROM.
TABLE 3-1:
Command
2001 Microchip Technology Inc.
1X000
1X001
1X100
1X101
00000
00001
00010
00011
00100
00101
00110
01000
01001
01010
01011
01100
01101
00111
01110
01111
HCS410/WM Responses
IFF Response
IFF Write
2
2
followed by the 16/32 bits of data.
, and then 16/32 bits of data.
Select HCS410/WM, used if Anti-
Read configuration word
Read low serial number
Read user area 0
Read user area 1
Read user area 2
Program HCS410 EEPROM
Write configuration word
Write low serial number
Write high serial number
Write user area 0
Write user area 1
Write user area 2
collision enabled
Read high serial number
Read user area 3
Write user area 3
IFF1 using key-1 and IFF
algorithm
IFF1 using key-1 and HOP
algorithm
IFF2 32-bit using key-2 and IFF
algorithm
IFF2 32-bit using key-2 and HOP
algorithm
LIST OF IFF COMMANDS
Description
1 to 32 bits of the serial number
(SER)
None
None
None
None
None
None
None
Transport code (32 bits); Com-
plete memory map: 18 x 16 bit
words (288 bits)
Transport code (32 bits); 16 Bit
configuration word
Transport code (32 bits); Lower
16 bits of serial number (SER0)
Transport code (32 bits); Higher
16 bits of serial number (SER1)
16 Bits of User EEPROM USR0
16 Bits of User EEPROM USR1
16 Bits of User EEPROM USR2
16 Bits of User EEPROM USR3
32-Bit Challenge
32-Bit Challenge
32-Bit Challenge
32-Bit Challenge
Preliminary
Expected data In
After the HCS410/WM has written the word into the
EEPROM, it will give two acknowledge pulses (T
and T
When writing to the serial number or configuration
word, the user must send the transport code before the
write will begin.
3.6
The decoder can read USER[0:3], SER[0:1], and the
configuration word in the EEPROM. After the data has
been read, the device is ready to receive a command
again.
Each read command is followed by a 16-bit data
response. The response always starts with a leading
preamble of 01
Note:
E
apart) on the LC pins.
IFF Read
If the configuration word is written, the
device must be reset to allow the new con-
figuration settings to come into effect.
2
and then the 16-bits of data.
Encoder select acknowledge if
SER match
16-bit configuration word
16 bits of serial number (SER0)
16 bits of serial number (SER1)
16 Bits of User EEPROM USR0
16 Bits of User EEPROM USR1
16 Bits of User EEPROM USR2
16 Bits of User EEPROM USR3
Write acknowledge pulse after
each 16-bit word, 288 bits trans-
mitted in 18 bursts of 16-bits
Write acknowledge pulse
Write acknowledge pulse
Write acknowledge pulse
Write acknowledge pulse
Write acknowledge pulse
Write acknowledge pulse
Write acknowledge pulse
32-Bit Response
32-Bit Response
32-Bit Response
32-Bit Response
HCS410/WM
Response
DS41116B-page 5
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wide