HT62104 HOLTEK [Holtek Semiconductor Inc], HT62104 Datasheet - Page 6

• Manufacturer Part Number: HT62104
• Description: Infrared Remote Encoder
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

Frame Code Transmission
Frame Code Transmission Timing
When a key input trigger occurs, the corresponding frame code will be output on the DOUT pin and the frame
code will be repeated 4 times. A data “1” will also appear on the LED pin after the internal RC oscillator starts to
oscillate.
Sequential Key Input Transmission
When key input triggers occurs sequentially, the corresponding frame codes will be a sequential output on the
DOUT pin. The transmission waveform is shown in the following diagram.
Rev. 1.00
DOUT
LED
IRC
K1
K2
f
OSC
= 455kHz
DOUT
LED
IRC
K 1
f OSC = 455 KHz
32ms
FC 1: Key 1 Frame Code
K1
>32ms
K1
K1
Sequential Key Input Transmission
Frame Code Transmission Timing
K1
32 ms
< 1 ms
12 T
FC 1 : Key
FC 1
K 1
6
32ms
FC 2: Key 2 Frame Code
K2
1 Frame Code
K2
FC 1
Signal Gap Time
K 1
K2
K2
FC 1
K 1
K2
K2
FC 1
K 1
K2
May 07, 2012
HT62104
K2