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Os motores de busca de Datasheet de Componentes eletrônicos |
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Os motores de busca de Datasheet de Componentes eletrônicos |
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SH3003 Folha de dados(PDF) 6 Page - Semtech Corporation |
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SH3003 Folha de dados(HTML) 6 Page - Semtech Corporation |
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6 / 30 page  6 ©2006 Semtech Corp. SH3003 www.semtech.com Not authorized for release outside of Semtech - DRAFT POWER MANAGEMENT Pin Pin Name Type Pin Function T Thermal pad - connect to ground 1VSS Power Ground, 0V - All VSS pins and TEST (VSS) pin must be connected together. 2 VREG Power Output of internal Voltage Regulator, 2.2V nominal. This pin can power exter- nal loads of < 5mA. If load is “noisy” it requires a bypass capacitor. May be left unconnected or used as a high logic level signal for CLKSEL pin. 3VDD Power Main power supply, +2.3 to +5.5V 4VBAK Power Back-up power supply for real-time clock, +2.3 to +5.5V (+1.8 to +5.5V typical). This voltage can be higher or lower than VDD. Connect a backup battery or backup capacitor (with external recharge circuit). Connect to VDD if not used. 5XIN Analog In Oscillator pins for optional external low frequency crystal, typically 32.768kHz crystal with nominal 12.5pF load cap. Keep open or connect to VSS if not used. 6XOUT Analog Out 7 CLKSEL Digital In A logic low level selects the internal 32.768kHz RC oscillator (CLKSEL tied to VSS). A high state on this pin selects the 32.768kHz crystal oscillator (CLKSEL is connected to VREG). The SH3003 always starts up using the internal 32.768kHz RC oscillator. If CLKSEL is high, the internal 32.768kHz clock switches to the crystal oscillator once it has stabilized, and RC oscillator is disabled for power conservation. Do not connect CLKSEL to any signals except VSS or VREG. CLKSEL must not be left open. 8VSS Power Ground, 0V. All VSS pins and TEST (VSS) pin must be connected together. Device Package SH3003IMLTR MLP 3x3mm, 16 pins SH3003IMLTRT MLP 3x3mm, 16 pins, lead-free EVK-SH3000USB SH3000 Evaluation Kit SH3000EK.pdf SH3000 Evaluation Kit User Guide SH3000UM.pdf SH3000 Reference Manual TOP VIEW 1 2 3 4 12 11 10 9 16 15 14 13 5678 MLP 16: 3x3 16 LEAD T VSS TEST VSS RST NRST NRST VBAK VDD VREG Pin Configuration Ordering Information Pin Descriptions |
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