TLC2 Datasheet, PDF (3/11 Pages) Radiometrix Ltd – UHF Narrow Band FM Low Cost multi channel radio modules

Figure 3: TLC2 footpint (top view)
Pin description – TLC2
Pin
1
2
3
4
5
P0/PGM
P1
P2
P3
Jumper
P4
Name
Vcc
No pin
TXD
No pin
0V
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 (MSB)
Function
power supply : 4 – 15V (TLC2) and 1.8 – 10V (TLC2LV)
Not present
TLC2: DC coupled input for 3V CMOS logic. Rin=100kΩ
TLC2LV: DC coupled input for CMOS logic⁵. Rin=47kΩ
Not present
Ground
True logic (0V = low). Weak pullup to 3V;
Serial frequency programming / configuration¹
True logic (0V = low). Weak pullup to 3V
True logic (0V = low). Weak pullup to 3V
True logic (0V = low). Weak pullup to 3V
Jumper soldered, P4=0 (Channel 00 – Channel 15 at 50kHz step)
Jumper clear, P4=1 (Channel 16 – Channel 31 at 50kHz step)
1. Serial programming is by an inverted 2400 baud RS232 at 3V CMOS level command into the PGM.
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 selection is by a true logic (0V=0, 3V=1), 4-pin parallel input (MSB selected by
jumper).
3. Channel select inputs have 10kΩ weak internal pull-up to 3V internal rail. Do not exceed 3V logic
levels on this port.
4. TLC2LV will shutdown if Vcc falls below 1.6V
5. TXD (TLC2LV): logic low < 1.3V, logic high > 1.7V. TXD maximum voltage = 10V
Radiometrix Ltd
TLC2/RLC2 Data Sheet
page 3