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參數(shù)資料
| 型號： | SC8521 |
| 廠商： | 杭州士景電子有限公司 |
| 英文描述： | INFRARED REMOTE CONTROL TRANSMITTER RC5 |
| 中文描述： | 紅外遙控器的RC5 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大?。?/td> | 162K |
| 代理商： | SC8521 |
Silan
Semiconductors
SC8521
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
REV: 1.3
2002.03.01
1
INFRARED REMOTE CONTROL
TRANSMITTER RC5
DESCRIPTION
The
SC8521
can
be
transmitters. It generates output pulses, in accordance with the RC5
protocol, when a key is pressed. The IC does not contain a software
programmable processor. However, it does contain a ROM in which
the codes that have to be transmitted are stored. The oscillator
frequency may be optionally chosen as 432KHz. For 432KHz
additional external capacitors must be connected. When a key in the
key-matrix is pressed a driveline will be connected to a sense line.
This causes the oscillator to start and a corresponding code will be
generated conforming to the RC5 protocol.
used
in
infrared
remote
control
Seven drive lines (
DR0
to
DR6
) and eight sense lines (SN0
to SN7) may be connected via the key matrix to scan the keys.
When two or more keys are activated simultaneously no
transmission will take place.
FEATURES
RC5 protocol
Maximum of 56 keys (20-pin version)
Option of multi-system or single system transmitter
-- Multi-system: maximum 8 system, selection by key
-- Single system: maximum 8 different systems per IC, selection
by jumper wire or switch.
SOP-20
Power-down and key wake-up
High output current (
≤
45mA)
Oscillator frequency of 432KHz
Multiple key protection
Option of 25% or 33% duty factor
ORDERING INFORMATION
SC8521
SOP-20
Package
PIN CONFIGURATIONS
1
2
3
4
5
6
7
8
16
15
14
13
12
11
9
10
20
19
18
17
S
XTAL1
XTAL2
SN0
SN1
SN2
SN3
SN4
SN5
VDD
Lout
VSS
DR0
DR1
DR2
DR3
DR4
SN6
SN7
DR6
DR5
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