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參數資料
| 型號： | PCA8521 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 搖控器 |
| 英文描述： | Infrared remote control transmitter RC5 |
| 中文描述： | TRANSMITTER IC |
| 文件頁數： | 8/20頁 |
| 文件大小： | 100K |
| 代理商： | PCA8521 |
1999 Jun 15
8
Philips Semiconductors
Product specification
Infrared remote control transmitter RC5
PCA8521
Table 3
ROM bit description
Pulse output
The bits of the remote control word, as indicated by the addressed ROM locations, are loaded into a shift register every
bit-time this register is shifted. The output is used to generate a logic 0 or a logic 1 in the biphase (Manchester) coding,
modulated with a frequency of 36 kHz. The duty factor of the modulation pulses may be selected (optionally) to be 25%
or 33.3%. The output of the pulse generator controls the output driver that can provide a maximum current of 45 mA.
BITS
FUNCTION
M0L to M5L
M6L
Command bits 0 to 5.
Field bit. This bit indicates whether command codes 0 to 63 are used (field bit is at logic 1) or
command codes 64 to 127 are used (field bit is at logic 0).
Inhibit bit. When this bit is at logic 1 no transmission will take place. When this bit is at logic 0
the appropriate code-word will be transmitted.
System bits 0 to 4.
Bank select. Will be stored in BS0 to BS2 when the ‘multi-system’ option is selected. With
single system bits M5H to M7H are don't care.
M7L
M0H to M4H
M5H to M7H
Fig.4 Timer schematic diagram.
handbook, full pagewidth
MBH035
432 kHz
or
4 MHz
OSCILLATOR
S
Q
CLK
R
Q
CLR
start input
no key
end control
CLK1
CLK2
INV
STOP
432 kHz
4 MHz
DIVIDE BY 111
DIVIDE BY 12
CONTROL
TIMER
DIVIDE-BY-4096
pulse
C0
C11
相關PDF資料 |
PDF描述 |
|---|---|
| PCA8521BP | Infrared remote control transmitter RC5 |
| PCA8521BT | Infrared remote control transmitter RC5 |
| PCA8521FP | Infrared remote control transmitter RC5 |
| PCA8521FT | Infrared remote control transmitter RC5 |
| PCA8565 | Real time clock/calender |
相關代理商/技術參數 |
參數描述 |
|---|---|
| PCA8521BP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Infrared remote control transmitter RC5 |
| PCA8521BT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Infrared remote control transmitter RC5 |
| PCA8521FP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Infrared remote control transmitter RC5 |
| PCA8521FT | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Infrared remote control transmitter RC5 |
| PCA85232 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:LCD driver for low multiplex rates |
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