HCS410-ISN MICROCHIP [Microchip Technology], HCS410-ISN Datasheet - Page 15
HCS410-ISN
Manufacturer Part Number
HCS410-ISN
Description
KEELOQ CODE HOPPING ENCODER AND TRANSPONDER
Manufacturer
MICROCHIP [Microchip Technology]
Datasheet
1.HCS410-ISN.pdf
(36 pages)
- Current page: 15 of 36
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FIGURE 2-17: DECODER IFF COMMANDS AND WAVEFORMS
TABLE 2-3:
Time Element
PPM Command Bit Time
PPM Response Bit Time
PPM Command Minimum High Time
Response Time (Minimum for Read)
Opcode to Data Input Time
Transport Code to Data Input Time
IFF EEPROM Write Time (16 bits)
1997 Microchip Technology Inc.
Read
Write/Program
Challenge
Encoder Select
IFFB = 0
IFFB = 1
Data = 1
Data = 0
Data = 1
Data = 0
Parameter
Ack pulses
Ack pulses
T
Ack pulses
Ack pulses
IFF TIMING PARAMETERS
E
Start
2 T
E
Opcode
Opcode
Symbol
T
T
T
T
T
T
T
T
BITC
BITR
PMH
OTD
TTD
WR
RT
E
Preliminary
T
OTD
Minimum
T
OTD
T
3.5
5.5
1.5
6.5
1.8
6.8
—
—
—
—
—
RT
Only when writing Serial
Number, Config or IFF
Transport
32 bits
Code
programming
Serial number
1 to 32 bits
Challenge
16/32 bits
0 1
Response
Typical
16 bits
200
100
T
T
—
—
—
—
—
TTD
4
6
2
3
BITC
Repeat 18 times for programming
16 bits
Data
Maximum
30
—
—
—
—
—
—
—
—
—
—
HCS410
Response
16/32 bits
Writing
T
DS40158C-page 15
WR
Encoder
Select
Ack
Units
ms
ms
ms
ms
T
T
T
s
E
E
E
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