- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385401 > HT6221 (Holtek Semiconductor Inc.) Multi-Purpose Encoders PDF資料下載
參數(shù)資料
| 型號(hào)： | HT6221 |
| 廠商： | Holtek Semiconductor Inc. |
| 英文描述： | Multi-Purpose Encoders |
| 中文描述： | 多功能編碼器 |
| 文件頁(yè)數(shù)： | 6/13頁(yè) |
| 文件大小： | 153K |
| 代理商： | HT6221 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)當(dāng)前第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)
HT6221/HT6222
6
March 2, 2000
Whenoneofthekeys(32or64keys)istriggered
for over 36ms, the oscillator is enabled and the
chip is activated. If the key is pressed and held
for108msorless,the108mstransmissioncodes
are enabled and comprised of a header code
(9ms), an off code (4.5ms), low byte address
codes (9ms~18ms), high byte address codes
(9ms~18ms), 8-bit data codes (9ms~18ms), and
the inverse codes of the 8-bit data codes
(18ms~9ms). After the pressed key is held for
108ms, if the key is still held down, the trans-
mission codes turn out to be a composition of
header (9ms) and off codes (2.5ms) only.
To avoid mistakes made by keyboard scanning
or simultaneous two-key inputs (except for the
three double-key active functions (K21+K22,
K21+K23, and K21+K24), the HT6221/HT6222
are facilitated with 36ms starting time.
The HT6221/HT6222 also provide three dou-
ble-key active functions (K21+K22, K21+K23,
and K21+K24) for tape deck recording opera-
tions. The double-key operation rules are
shown in timing 4 and timing 6.
Transmission codes
The transmission codes of the HT6221/6222 consist of a 9ms header code, a 4.5ms off code, 16-bit ad-
dress codes (18ms~36ms), 9ms~18ms 8-bit data codes, and the inverse code of the 8-bit data codes. The
following is an illustration of the transmission codes:
!
#
7
2 9 0 4
- 0 : : "
/ :
1 : 9 0 - :
. % :
. % :
2 ' . 9 ' 1 ; . 9 * ; . 9 * 4
- % < = > 3
- -
/ :
" 1 :
" 1 :
/ :
,
@ A 1 1 < = >
" 1 :
. " 1 0 :
. " 1 0 :
Output format for the DOUT
0 " - :
% " * * :
- % < = >
38kHz carrier
B
B
B C B
D" : 4
D" : 4
- % < = >
- % < = >
. " 1 0 :
Logic states
The output code carrier of the DOUT pin is shown in Timing 2:
The transmission codes employ the PPM (Pulse Position Modulation) method to represent their two
logic states by "0" (1.12ms) and "1" (2.24ms) as shown in Timing 3:
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HT6222 | Multi-Purpose Encoders |
| HT6230 | RES THICK FILM 100K OHM 1 W 7KV |
| HT6240-002 | RES THICK FILM 100 OHM 1 W 7KV |
| HT6264 | CMOS 8K x 8-Bit SRAM |
| HT62L256 | DISPLAY 7-SEG 7.6MM GREEN |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HT6221(20DIP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Remote-Control Transmitter/Encoder |
| HT6221(20SOIC) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Remote-Control Transmitter/Encoder |
| HT6221(20SOP) | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Consumer IC |
| HT6221_07 | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Multi-Purpose Encoders |
| HT6221A | 制造商:HOLTEK 制造商全稱:Holtek Semiconductor Inc 功能描述:Multi-Purpose Encoders |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。