CONTROL44 Datasheet, PDF (2/7 Pages) List of Unclassifed Manufacturers – 4 bit Address - 4 bit Data encoder/decoder

Encoder Mode
Control44 can be put into Encoder Mode by connecting Mode (pin 2) to supply.
NC 1
Mode(Vdd) ₂
TXE 3
RST 4
VSS 5
A0 6
A1 7
A2 8
A3 9
18 TXD
17 SEND
16 OSC1
15 OSC2
14 Vdd (+5V)
13 DB3
12 DB2
11 DB1
10 DB0
NC
Mode
TXE
RST
VSS
A0
A1
A2
A3
TXD
SEND
OSC1
OSC2
Vdd
DB3
DB2
DB1
DB0
4k7
3.58MHz
5V
supply
RF
Vcc
GND
TXD
Figure 2: Control44 in Encoder Mode
Pin
1
2
3
4
5
6-9
10-13
14
15
16
17
18
Name
NC
Mode
TXE
RST
VSS
A3:A0
DB3:DB0
Vdd
OSC2
OSC1
SEND
TXD
Input/Output
Input
Output
Input
Supply
Input
Input
Supply
Output
Input
Input
Output
Description
RX=0V, TX=Vdd (no pull-up, only read at reset/power up)
Active Low RF Transmitter Enable (Open drain, require 10k pull-up)^4,6
Active Low Reset (Connect to user system reset or tie to Vdd)
Supply Ground
Least significant 4 bits of Address (Internal pull-ups to Vdd)^1,5
Least significant 4 bits of Data B (Internal pull-ups to Vdd)⁵
4.5-5.5V supply (decouple with 0.1µF close to IC)
3.58MHz resonator²
3.58MHz resonator²
Active Low Send Packet (Encoder Enable)³
Encoded Address and Data to TXD input of RF Transmitter
Decoder Mode
Control44 can be put into Decoder Mode by connecting Mode (pin 2) to Ground.
5V
supply
RF
STB
Mode
NC
RST
VSS
A0
A1
A2
A3
RXD
Latch
OSC1
OSC2
Vdd
DB3
DB2
DB1
DB0
STB
Mode
NC
RST
VSS
A0
A1
A2
A3
RXD
Latch
OSC1
OSC2
Vdd
DB3
DB2
DB1
DB0
3.58MHz
470R
470R
470R
470R
Vcc
GND
RXD
100nF
Figure 3: Control44 in Decoder Mode
Radiometrix Ltd
Control44
page 2