SH3000UM SEMTECH [Semtech Corporation], SH3000UM Datasheet
SH3000UM
Related parts for SH3000UM
SH3000UM Summary of contents
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POWER MANAGEMENT Description Three components make a complete system: any microcontroller, the SH3003, and a bypass capacitor. This low-cost system would consume very little power and have clock-frequency accuracy of ± 0.5%. A fourth component, a 32.768kHz crystal, raises the ...
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POWER MANAGEMENT Typical Application Circuit V+ ©2006 Semtech Corp. Not authorized for release outside of Semtech C Bypass μ SH3003 9 4 Typical Application Circuit with High Clock Accuracy 2 VDD X IN ...
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POWER MANAGEMENT POWER MANAGEMENT Absolute Maximum Ratings Exceeding the specifi cations below may result in permanent damage to the device or device malfunction. Operation outside of the parameters specifi the Electrical Characteristics section is not recommended. Parameter Supply ...
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POWER MANAGEMENT Electrical Characteristics (continued) Crystal Oscillator Parameter Crystal operating frequency CLK32 duty cycle Start-up time XIN/XOUT padding capacitance after power-up Minimum X /X padding capacitance IN OUT Maximum X /X padding capacitance IN OUT Padding capacitance resolution X switching ...
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POWER MANAGEMENT POWER MANAGEMENT Electrical Characteristics (continued) Programmable Reset Parameter V switching threshold after power- switching threshold for min code switching threshold for max code DD V threshold resolution DD V hysteresis DD Falling V ...
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... SH3003IMLTRT TEST VSS 12 EVK-SH3000USB RST 11 SH3000EK.pdf NRST 10 SH3000UM.pdf NRST 9 Pin Function Thermal pad - connect to ground Ground All V pins and TEST (V SS 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 CLK Main power supply, +2 ...
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POWER MANAGEMENT POWER MANAGEMENT Pin Descriptions (continued) Pin Pin Name Type 9 R Analog REF 10 N Digital Out RST 11 R Digital Out ST 12 TEST (V ) Digital CLK32 Digital Out ...
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POWER MANAGEMENT Block Diagram BAK 4 Regulators & Battery Back- Voltage V SS Reference 8 LF Oscillator Oscillator X OUT 6 CLK SEL Select 7 Logic R REF 9 Oscillator ...
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POWER MANAGEMENT POWER MANAGEMENT Application Information The SH3003 is a single-chip support system for microcontrollers, microprocessors, DSPs and ASICs. It consists of four major functional blocks, each block having numerous enhancements over alternative solutions. The major modules are the CPU ...
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POWER MANAGEMENT Application Information (continued) CPU Supervisor The SH3003 has two supervisory functions that man- age the reset of the target processor, a low V (Brownout Detector) and a Watchdog Timer, see Figure 1. Both functions are integrated with the ...
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POWER MANAGEMENT POWER MANAGEMENT Application Information (continued) Low V Reset (continued power up both the active-high and active-low reset sig- nals are driven active. These outputs are typically valid for a V level of at least 0.5V, and ...
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POWER MANAGEMENT Application Information (continued) Watchdog Timer The second circuit for supervising the processor is the watchdog timer. Whereas the low V monitors supply voltage, the watchdog timer monitors be- havior based on a programmable timer that must ...
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POWER MANAGEMENT POWER MANAGEMENT Application Information (continued) Clock Management System The SH3003 provides a fl exible tool for creating and man- aging clocks, a versatile and accurate “any frequency” clock synthesizer (see Figure 4 capable of generat- ing ...
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POWER MANAGEMENT Application Information (continued) Clock Generator Operation (continued) When the HF oscillator is operating alone, it can set the frequency of the clock on the CLKOUT pin to ±0.025%, and maintain it to ± 0.5% over temperature. This com- ...
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POWER MANAGEMENT POWER MANAGEMENT Application Information (continued) Programmable Spectrum Spreading (continued) Setting En CFG1 CFG0 Spectrum Spreading is created by varying the frequency of the HF oscillator with a pseudo-random ...
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POWER MANAGEMENT Application Information (continued) Special Operating Modes The SH3003 can operate stand-alone, without connec- tions to the In and Out terminals of the host’s oscillator. For example, a bank of SH3003 chips can generate sev- eral different frequencies for ...
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POWER MANAGEMENT POWER MANAGEMENT Application Information (continued) Low Frequency (LF) Oscillator System This module provides the 32.768kHz clock to all internal circuits and to the dedicated output pin, CLK32. If en- abled, the CLK32 output continues normal operations when VDD ...
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POWER MANAGEMENT Application Information (continued) Real-Time Clock Using the ±4ppm, 32.768kHz clock from the LF oscillator, the Real-Time Clock module keeps time with a maximum error as low as two minutes per year. This compares favorably with a conventional error ...
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POWER MANAGEMENT POWER MANAGEMENT Application Information (continued) Periodic Interrupt/Wakeup Timer Simple and versatile, the Periodic Interrupt/Wakeup Timer can be used to create very accurate recurring interrupts for use by the host micro. With some minimal software support from the host ...
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POWER MANAGEMENT Application Information (continued) Interrupt and Serial Interface A single line is used to convey bi-directional information between the SH3003 and the processor, and as the inter- rupt line to the processor. The polarity of the interrupt signal is ...
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POWER MANAGEMENT POWER MANAGEMENT Application Information (continued) Interrupt and Serial Interface (continued) Minimum Bit Period CLK Frequency (host synchronous to CLK OUT 16MHz 8MHz 2MHz Interrupt Interface The serial communications line to the SH3003 (Pin 14, IO/Int) also serves as ...
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POWER MANAGEMENT Application Information (continued) 1. INT disabled, uP initiates write access. Active high interrupt. uBuddyIOOut uPIOOut CombinedIO Pre- Post- RW0 Idle Start State start Start 2. INT active (high), uP initiates write access uBuddyIOOut uPIOOut CombinedIO IN Pendin Pre- ...
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POWER MANAGEMENT POWER MANAGEMENT Typical Characteristics Free Running HF DCO Frequency Deviation over Temperature for All Frequencies -60 -40 -20 -60 -40 -20 ©2006 Semtech Corp. 4000 2000 -2000 -4000 -6000 -8000 -10000 -12000 -14000 -16000 ...
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POWER MANAGEMENT Typical Characteristics (continued) 32.768 kHz Crystal Oscillator Frequency Deviation over Temperature -60 -40 -60 -40 -20 ©2006 Semtech Corp. Not authorized for release outside of Semtech -50 -100 -150 -200 Temperature (ºC) ...
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POWER MANAGEMENT POWER MANAGEMENT Typical Characteristics (continued) -60 -40 - 2.5 3 ©2006 Semtech Corp. Standby Current over Temperature ( 25.0 20.0 15.0 Crystal 32.768 kHz Internal 32.768 kHz ...
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POWER MANAGEMENT Typical Characteristics (continued 3500 3000 2500 2000 1500 1000 500 Operating V 3200 3000 2800 2600 2400 2200 2000 2.5 3 ©2006 Semtech Corp. Not authorized for release outside of Semtech Current vs ...
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POWER MANAGEMENT POWER MANAGEMENT Typical Characteristics (continued) Free Running HF DCO Short Term Frequency Stability (CLKOUT = 8 MHz) 300 200 100 0 -500 500 -100 -200 -300 -400 FLL Locked HF DCO Jitter over Jitter Bandwidth (CLKOUT = 12.8 ...
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POWER MANAGEMENT Outline Drawing - MLP pins ©2006 Semtech Corp. Not authorized for release outside of Semtech 28 SH3003 - DRAFT www.semtech.com ...
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POWER MANAGEMENT POWER MANAGEMENT Land Pattern - MLP pins ©2006 Semtech Corp. 29 SH3003 www.semtech.com ...
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POWER MANAGEMENT Copyright ©2002-2006 Semtech Corporation. All rights reserved. Semtech, the Semtech logo, MicroBuddy, μBuddy, and μB are marks of Semtech Corporation. All other marks belong to their respective owners. Changes may be made to this product without notice. Customers ...