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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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SC8521 Datenblatt(PDF) 1 Page - Silan Microelectronics Joint-stock |
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SC8521 Datenblatt(HTML) 1 Page - Silan Microelectronics Joint-stock |
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1 / 16 page  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 used in infrared remote control 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. 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 XTAL1 XTAL2 SN0 SN1 SN2 SN3 SN4 SN5 VDD Lout VSS DR0 DR1 DR2 DR3 DR4 SN6 SN7 DR6 DR5 |
Ähnliche Teilenummer - SC8521 |
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Ähnliche Beschreibung - SC8521 |
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