TLC2 Datasheet, PDF (5/11 Pages) Radiometrix Ltd – UHF Narrow Band FM Low Cost multi channel radio modules

Figure 5: RLC2 footpint (top view)
Pin description – RLC2
Pin
1
2
3
4
5
P0/PGM
P1
P2
P3
Jumper
P4
Name
Vcc
RSSI
0V
RXD
AF
Parallel channel
select, bit 0
Parallel channel
select, bit 1
Parallel channel
select, bit 2
Parallel channel
select, bit 3
Parallel channel
select, bit 4
Function
DC supply (3.7V to 15V, at 18mA).
0.5V-2.5V DC level. 60dB dynamic range. 40kΩ output impedance
Ground
Open collector digital data output with internal 47kΩ pull-up to Vcc
600mV pk-pk audio. DC coupled, approx 0.8V bias.
True logic (0V = low). Weak pullup to 3.5V
Serial frequency programming / configuration¹
True logic (0V = low). Weak pullup to 3.5V
True logic (0V = low). Weak pullup to 3.5V
True logic (0V = low). Weak pullup to 3.5V
Jumper soldered, P4=0 (Channel 00 – Channel 15 at 50kHz step)
Jumper clear, P4=1 (Channel 16 – Channel 31 at 50kHz step)
NOTES:
1. Serial programming is by a 2400 baud inverted 'RS232' (3V CMOS levels) datastream applied
to the P0 pin. If connection to a true RS232 port is desired, then a suitable inverting level
shifter / buffer (MAX232 or NPN switch transistor) is needed.
2. Parallel channel select is by a 4 pin parallel input (MSB selected by jumper). 3V CMOS levels
should be used.
3. As supplied the frequency table is thus:
ch 0-15 433.875 – 434.625 MHz (50KHz steps)
ch 16-31 433.9 - 434.65 MHz (50KHz steps)
Radiometrix Ltd
TLC2/RLC2 Data Sheet
page 5