RFHCS362GT-I/SO Microchip Technology, RFHCS362GT-I/SO Datasheet - Page 20

• Manufacturer Part Number: RFHCS362GT-I/SO
• Description: IC CODE HOPPNG ENCDR W/RF 18SOIC
• Manufacturer: Microchip Technology

Specifications of RFHCS362GT-I/SO

• Frequency: 310MHz ~ 440MHz
• Applications: Automotive, Building Access, Garage Openers
• Modulation Or Protocol: ASK, FSK
• Data Rate - Maximum: 3.3 kbps
• Power - Output: -12dBm ~ 2dBm
• Current - Transmitting: 11.5mA
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Voltage - Supply: 2.2 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 18-SOIC (0.300", 7.50mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Memory Size: -

rfHCS362G/362F
3.5
The S3/RFEN
ured to function as an RF Enable output signal. This is
selected by the RF Enable Output (RFEN) configura-
tion option as described in Section 4.5.13. When
enabled, this pin will be driven HIGH before data is
transmitted through the DATA pin.
The RFEN
interface with the transmitter. Figure 3-11 shows the
start-up sequence. A button is debounced and the
EEPROM counter advanced during the power-up delay
(T
transmitter. The DATA output is delayed to give the
FIGURE 3-11: PLL INTERFACE
DS41189A-page 20
PU
). Then the RFEN
RF Enable and Transmitter Interface
RFEN
OUT
S[3210]
DATA
OUT
OUT
and DATA pins are synchronized to
pin of the rfHCS362 can be config-
OUT
pin goes high to enable the
T
PU
Button Press
T
PLL
1st CODE WORD
Preliminary
transmitter crystal oscillator and PLL time to startup
(T
time after the end of the last code word.
When the RF Enable output is selected, the S3 pin can
still be used as a button input. However, only minimum
code words will be transmitted. An alternative solution
for more than three push buttons can be the switching
diode circuit described in Section 1.2.
In typical implementations of the rfHCS362G/362F, the
encoder RFEN
RFEN
PLL
). The RFEN
IN
pin.
2nd CODE WORD
OUT
Button Release
OUT
pin is connected to the transmitter
signal will go LOW one guard
Guard Time
2002 Microchip Technology Inc.
T
G