PIC16LF1824T39A_12 Datasheet, PDF (325/418 Pages) Microchip Technology – 20-Pin Flash Microcontrollers with XLP Technology

PIC16LF1824T39A
28.2.5 MANUAL TRANSMIT MODE
The RF transmitter can continuously transmit by setting
the mode bit (DA15) to a logic ‘1’ in the Applications
register (see Table 28-3). It will continuously transmit
RF data presented on the DATA pin without
automatically entering Sleep mode. To cease
transmission the Mode bit must be cleared (DA15 =
‘0’). Figure 28-6 shows the Manual Transmit mode
timing.
FIGURE 28-6:
MANUAL TRANSMIT MODE TIMING
DA15 = 1
DA15 = 0
CTRL
DATA
RFOUT (OOK)
t_WAKE
t_RAMP
RFOUT (FSK)
Sleep
Wake
Sleep
28.3 Modulation Selection
28.3.1 ON-OFF KEYING (OOK)
OOK modulation can be configured by setting the
modulation DA14 bit in the Application register
(Table 28-3). Data is transmitted as stated in
Section 28.2.3 “Data Transmission”.
28.3.2 FREQUENCY SHIFT KEYING (FSK)
FSK modulation can be configured by clearing the
Modulation DA14 bit in the Application register.
Frequency Deviation (f_DEV) is configured by setting the
DA<12:5> bits in the Application register. Data is
transmitted as stated in Section 28.2.3 “Data Trans-
mission”.
28.3.3 DIGITAL TRANSMISSION SYSTEM
(DTS)
In the United States and Canada, digital modulation
techniques are permitted (FCC Part 15.247 and
RSS-210, respectively). The RF transmitter can be
configured for DTS mode by selecting FSK and f_DEV =
200 kHz. Data encoding techniques, such as data
whitening, may be needed to ensure that the minimum
6 dB bandwidth is at least 500 kHz.
 2012 Microchip Technology Inc.
Preliminary
DS41657A-page 325