SH3000 SEMTECH [Semtech Corporation], SH3000 Datasheet
SH3000
Related parts for SH3000
SH3000 Summary of contents
Page 1
... The SH3000 can operate completely stand-alone, or under control of the microcontroller. A single-wire interface handles both bi-directional communications and the interrupt / wake-up signal from the SH3000. The SH3000 stores all configuration, calibration, parameters, and status information in a 36-byte bank of control registers. On reset, most of these are reloaded with defaults from the factory-set One-Time-Programmable (OTP) memory ...
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... Clock Driver & Start/Stop Logic Post-scaler HF Oscillator & FLL V Monitor DD Watchdog X TAL Real Time Clock Periodic Interrupt / Wake-up Timer RC SH3000 µBuddy™ 2 SH3000 MicroBuddy™ R I/O OUT ESET 15 OTP Memory Calibration & Default Settings Reset Drivers & Logic Control Logic Interrupt Serial I/O V1 ...
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... OUT used. A logic low level selects the internal 32 kHz RC oscillator (CLK state on this pin selects the 32 kHz crystal oscillator (CLK The SH3000 always starts up using the internal 32 kHz RC oscillator. If CLK 7 CLK Digital In high, the internal 32 kHz clock switches to the crystal oscillator once it has stabilized, SEL and RC oscillator is disabled for power conservation ...
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... SH3000 may not be realized. In the preferred configuration, where the SH3000 is tightly coupled to the target micro, the SH3000 offers an unprecedented level of design flexibility in clock and power usage management. Copyright ©2003-2005 Semtech Corporation SH3000 MicroBuddy™ ...
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... Both functions are integrated with the Clock Management System to provide a more complete system solution than the stand-alone components. The SH3000 has both active high and active low reset output pins. Both are driven strong to the active state and weak to the inactive state. This eliminates the need for external pull-ups and allows various reset sources to be connected together in a wire-OR configuration ...
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... acceptable level. In contrast, DD the SH3000 allows the power source to charge the bypass capacitors and raise the level of V additional load. Only when power has stabilized is the target micro permitted to start expending energy. ...
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... HF crystal), to re-start the oscillator. The SH3000 allows the response to and service of an event to finish with a speed previously unattainable for a simple microprocessor. A system with a traditional clock approach may be as much as 100x – ...
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... HF clock depends on the quality of the 32.768 kHz internally generated clock; the low-frequency (LF) Oscillator System is described later in this document. When the Real Time Clock module of the SH3000 is used for high-accuracy timekeeping, an external 32.768 kHz watch crystal used as a reference for RTC provides excellent accuracy and stability for the Clock Management System ...
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... CLK output on the CLK operating mode is automatically recognized by the SH3000. command at all. Still, with the help of the SH3000 this controller can do a “simulated” STOP by issuing an instruction to the SH3000 to stop the clock. This command is accepted only if the Periodic Interrupt / Wakeup Timer has started (otherwise, once the system is put to sleep, it would never wake up again) ...
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... They are the Real Time Clock and the Periodic Interrupt / Wakeup Timer. Both of these units as well as other functions of the SH3000 depend on the internal 32 kHz clock for accuracy. The SH3000 allows a trade-off between the cost of a system and its accuracy ...
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... LSB L OAD 32-bit Counter R ESET 32-bit Comparator ÷ 24 16-bit Counter L OAD Hours Days (BIN) (BCD) 32-bit Time Interval 0 - 65535 LSB 11 SH3000 MicroBuddy™ Current Timer MSB Value 32-bit Latch Interrupt Logic Serial I/O 32-bit Latch MSB V1.15 www.semtech.com ...
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... Auxiliary functions Scratchpad RAM and ID number Four (4) bytes of general-purpose RAM reside on the SH3000. Immediately after reset, they are loaded with the factory-programmed values in the OTP memory. For a standard device these values are 0x00, 0x00, 0x00, 0x00. Unique serial numbers or other information could be located there ...
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... For example, if interrupt is programmed to be active low, this pin is weakly pulled to V when inactive shown in Figure 8, the SH3000 and the host communicate with serial data streams. The host always initiates communication. A data stream consists of the following (in this order): • ...
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... SYSTEM MANAGEMENT Copyright ©2003-2005 Semtech Corporation Figure 7: Serial Communication Timing Diagram 14 SH3000 MicroBuddy™ V1.15 www.semtech.com ...
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... SYSTEM MANAGEMENT Electrical Specifications Absolute Maximum Ratings Note: The SH3000 is ESD-sensitive. Description Supply voltages BATT Input voltage on CLK , IO/I , TEST IN NT Input voltage on CLK SEL Input current on any pin except V Input current on V REG Ambient operating temperature Storage temperature IR Reflow temperature, (soldering for 10 seconds, TR ...
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... MOhm) Absolute accuracy over temperature and supply (internal 1 MOhm) Frequency temperature stability (ext. 1 MOhm) Frequency temperature stability (int. 1 MOhm) Power on startup time CLK32 cycle to cycle jitter Copyright ©2003-2005 Semtech Corporation SH3000 MicroBuddy™ Symbol Min Typ Fop 32.768 DC 25 Tst ...
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... Minimum spread spectrum range Maximum spread spectrum range CLK rise/fall time (20 pF load) OUT CLK logic output low (4 mA load) OUT CLK logic output high (4 mA load) OUT Copyright ©2003-2005 Semtech Corporation SH3000 MicroBuddy™ Symbol Min Typ Vbo 2.27 2.3 Vres 25 33 Vhys 25 ...
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... Internal 32 kHz Oscillator Frequency over Temperature 33400 33200 33000 32800 32600 32400 32200 32000 31800 -60 -40 -20 Copyright ©2003-2005 Semtech Corporation Temp. º Temperature (ºC) 18 SH3000 MicroBuddy™ 80 100 120 140 80 100 120 140 V1.15 www.semtech.com ...
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... Battery Backup Current over Temperature ( -60 -40 -20 Copyright ©2003-2005 Semtech Corporation -50 -100 -150 -200 Temperature (º BATT Internal 32 kHz Crystal 32 kHz Temperature (ºC) 19 SH3000 MicroBuddy™ 100 120 80 100 120 140 V1.15 www.semtech.com ...
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... Standby Current over Temperature (V 25.0 20.0 15.0 10.0 5.0 0.0 -60 -40 -20 0 Standby current over Crystal 32 kHz Internal 32 kHz 2.5 3 Copyright ©2003-2005 Semtech Corporation = Crystal 32 kHz Internal 32 kHz Temperature (ºC) (Temp. = 25ºC) DD 3.5 4 4 SH3000 MicroBuddy™ 100 120 140 5 5.5 V1.15 www.semtech.com ...
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... Operating V Current over V DD 3200 3000 2800 2600 2400 2200 2000 2.5 3 Copyright ©2003-2005 Semtech Corporation = 5.5 V, Temp. = 25º Frequency (MHz) (CLKOUT = 16 MHz, Temp = 25ºC) DD 3.5 4 4 SH3000 MicroBuddy™ 5.5 V1.15 www.semtech.com ...
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... FLL Locked HF DCO Jitter over Jitter Bandwidth (CLKOUT = 12.8 MHz) 100000 10000 1000 100 10 0.1 1 Copyright ©2003-2005 Semtech Corporation 2500 3500 4500 Time (seconds) 10 100 1000 Jitter Bandwidth (kHz) 22 SH3000 MicroBuddy™ 5500 6500 10000 100000 V1.15 www.semtech.com ...
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... SYSTEM MANAGEMENT Package Outline Drawing MLP pins Copyright ©2003-2005 Semtech Corporation SH3000 MicroBuddy™ 23 V1.15 www.semtech.com ...
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... SYSTEM MANAGEMENT Column Heading Contact Information ©2005 Semtech Corporation Semtech Corporation 200 Flynn Road Camarillo, CA 93012 Phone: (805) 498-2111 Fax: (805) 489-3804 24 SH3000 MicroBuddy TM www.semtech.com ...