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RFHCS362AG Datasheet

  • RFHCS362AG

  • Code Hopping Encoder with UHF ASK/FSK Transmitter

  • 60頁

  • MICROCHIP   MICROCHIP

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rfHCS362G/362F
K
EE
L
OQ廬
Code Hopping Encoder with
UHF ASK/FSK Transmitter
General:
鈥?Combination K
EE
L
OQ
encoder and synthesized
UHF ASK/FSK transmitter in a single package
鈥?Operates on a single lithium coin cell
- <200 nA typical standby current
- 4.8 to 11.5 mA transmit current
- 2.2 to 5.5V operation
鈥?Integrated solution with minimum external parts
鈥?Separate pin-outs for K
EE
L
OQ
encoder and RF
transmitter provides for design flexibility
Pin Diagrams
SOIC
V
DD
LED/SHIFT
S0
S1
RFEN
IN
CLKOUT
PS/DATA
ASK
V
DDRF
ANT2
鈥?
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
V
SS
DATA
S3/RFEN
OUT
S2
XTAL
LF
NC
V
SSRF
ANT1
rfHCS362G
SSOP
V
DD
LED/SHIFT
S0
S1
XTAL
RFEN
IN
CLKOUT
PS/DATA
ASK
V
DDRF
ANT2
鈥?
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
V
SS
DATA
S3/RFEN
OUT
S2
FSK
OUT
DATA
FSK
LF
NC
V
SSRF
ANT1
Code Hopping Encoder:
鈥?Programmable minimum code word completion
鈥?Battery low signal transmitted to receiver with pro-
grammable threshold
鈥?Non-volatile EEPROM storage of synchronization
data
鈥?Easy to use EEPROM programming interface
鈥?PWM or Manchester modulation
鈥?Selectable encoder data rate 417 to 3334 bps
鈥?On-chip tunable encoder oscillator
鈥?RF Enable output for transmitter control
鈥?Button inputs have internal pull-down resistors
鈥?Elapsed time and button queuing options
鈥?Current limiting on LED output
鈥?2-bit CRC for error detection
rfHCS362F
Security:
Programmable 28/32-bit serial number
Two programmable 64-bit encryption keys
Programmable 60-bit seed
Each 69-bit transmission is unique with 32 bits of
hopping code
鈥?Encryption keys are read protected
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
UHF ASK/FSK Transmitter:
鈥?Conforms to US FCC Part 15.231 regulations and
European ERC 70-03E and EN 300 220-1
requirements
鈥?VCO phase locked to quartz crystal reference;
allows narrow receiver bandwidth to maximize
range and interference immunity
鈥?Crystal frequency divide by 4 output (CLKOUT)
鈥?Transmit frequency range (310 鈥?440 MHz) set by
Crystal frequency
鈥?ASK Modulation
鈥?FSK Modulation through crystal pulling
(rfHCS362F)
鈥?Adjustable output power: -12 dBm to +2 dBm
鈥?Differential output configurable for single or
double ended loop antenna
鈥?Automatic power amplifier inhibit until PLL lock
Applications:
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Automotive Remote Keyless Entry (RKE) systems
Automotive alarm systems
Automotive immobilizers
Community gate and garage door openers
Identity tokens with usage counters
Burglar alarm systems
Building access
Features
Device
rfHCS362AG
rfHCS362AF
Encrypt
Keys
2 x 64
2 x 64
Encoding
PWM/MAN
PWM/MAN
Transmitter
ASK
ASK/FSK
漏
2002 Microchip Technology Inc.
Preliminary
DS41189A-page 1

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