RFHCS362G-I/SO Microchip Technology, RFHCS362G-I/SO Datasheet - Page 35

• Manufacturer Part Number: RFHCS362G-I/SO
• Description: IC CODE HOPPNG ENCDR W/RF 18SOIC
• Manufacturer: Microchip Technology

Specifications of RFHCS362G-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: -

6.7
The mode control logic pin RFEN
ation of the transmitter (Table 6-7). When RFEN
goes high, the crystal oscillator starts up. The voltage
on the LF pin ramps up proportionally to the RF fre-
quency. The PLL can lock onto the frequency faster
than the starting up crystal can stabilize. When the LF
pin reaches 0.8V, the RF frequency is close to locked
on the crystal frequency. This initiates a 150 micro-
second delay to ensure that the PLL settles. After the
delay, the PS/DATA
fier are enabled to start transmitting.
When RFEN
power Standby mode. The power amplifier is dis-
abled, the crystal oscillator stops, and the PS/
DATA
circuitry drives the PS/DATA
is low. The encoder DATA pin is typically the only con-
nection to PS/DATA
before RFEN
For most applications the RFEN
directly to the RFEN
internal pull-down resistor.
TABLE 6-7:
RF
2002 Microchip Technology Inc.
0
1
EN
ASK
Mode Control Logic
pin is driven low. This will be a conflict if other
IN
OUT
Transmitter and CLKOUT in Standby
Transmitter and CLKOUT enabled
goes low, the transmitter goes into low
goes low.
RFEN
ASK
ASK
OUT
bias current and power ampli-
and it always drives DATA low
IN
pin. The RFEN
Description
PIN STATES
ASK
pin high while RFEN
IN
IN
controls the oper-
pin is connected
IN
pin has an
Preliminary
IN
IN
rfHCS362G/362F
DS41189A-page 35