Radio Encoder / Decoder IC’s
RF800
Typical application circuit for RF800 setup as a Decoder
Pin Descriptions for RF800 configured as a Decoder
Pin
Number
Name
Type
Description
1
2
MCLR
Mode
Power
In/Out
Vcc supply voltage connection
Selects operation as Decoder when low or Encoder when high.
RF baud rate (element time) select option.
Logic ‘1’ selects 100us element time.
Logic ‘0’ selects 400us element time.
Learn button, puts RF800 Decoder into learn mode when
momentarily connected to GND
3
4
100 / 400
In
TEN / LRN
In/Out
Sets outputs to either latched or monetary for operation with the 204
handheld transmitter.
Logic “1” selects momentary mode
5
TEN / 204
In/Out
Logic “0” selects latching mode
6
7
LED
Data
Out
In/Out
Power
In
Learn LED drive. Active low.
Received RF serial data
8 & 19
9
GND
0 volts.
OSC1
OSC2
Out 9-16
Connect to 4MHz, 3 terminal resonator.
Connect to 4MHz, 3 terminal resonator.
Logic outputs 9 to 16 (active low)
10
Out
11-18
Out
Vcc supply voltage connection.
Decouple with a 100n capacitor close to the IC supply pins.
Logic outputs 1 to 8 (active low)
20
Vcc
Power
Out
21-28
Out 1-8
DS800-4 July ’07
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