Rato
Description:
RT1221/RT1222
RT1221/RT1222 are remote control transmitter utilizing CMOS technology specially
designed for infrared remote control applications. Maximum of 65536 customer
codes are available by setting external diodes, resistors and internal MASK ROM.
Using micro-processors for decoder can construct various powerful applications
for remote control systems.
Features:
Pin Out:
CMOS technology
Operating voltage:1.8~3.5V
Low power consumption
455KHz ceramic resonator or crystal
REM with 38KHz carrier for IR medium
65536 customer codes can be selected
Maximum active keys:
RT1221: 32 function keys and 3 double action keys
RT1222: 64 function keys and 3 double action keys
Absolute Maximum Rating:
Symbol
Parameter
V
CC
Supply Voltage
V
IN
Input Voltage
P
d
Power Dissiption
T
STR
Storage Temperature
T
OP
Operating Temperature
Conditions
(Temp=25
鈩?/div>
)
Rating
UNIT
6.0
V
-0.3鈭糣
CC
V
250
mV
-40鈭?125
鈩?/div>
-20鈭?70
鈩?/div>
Electrical Characteristic
Symbol
f
OSC
V
CC
I
CC
I
OL(LED)
I
STB
Parameter
System Frequency
Supply Voltage
Operating Current
Standby Current
LED Sink Current
Dout Source Current
Conditions
455k Ceramic
resonator
All Function
Operations
f
OSC
=455kHz
Without Load
f
OSC
Stop
V
O
=0.3V
V
O
=2.7V
Min.
Typ.
455K
3.0
200
0.1
2.0
-4.0
Max.
Unit
H
Z
V
UA
UA
mA
mA
1.8
-
-
1.2
-2.0
3.5
400
1
-
-
I
OH(DOUT)
錛?/div>
1
