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SH3100 Datasheet(PDF) 1 Page - Semtech Corporation |
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SH3100 Datasheet(HTML) 1 Page - Semtech Corporation |
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1 / 80 page  www.semtech.com 1 SH3100 POWER MANAGEMENT Supervisory IC with I2C Interface and PWM The SH3100 is a size, power, and cost-saving solution for microprocessor support functions. It is intended to replace a number of peripheral devices normally used in conjunction with a microprocessor. Its prime function is to provide an accurate and stable clock source which can be started up and shut down very quickly to enable it to be used in a pulsed fashion for very low power applications. The SH3100 consumes very little power when in standby, and it provides a stable output clock in less than 2μs. This allows it to outperform ceramic resonators and crystals requiring much longer start-up times. Master HFDCO oscillator which can be programmed to between 8MHz and 33.5MHz with 2kHz resolution A 32.768kHz crystal oscillator with 5-bit programma- ble padding capacitance giving a frequency adjust- ment resolution of 4ppm Two clock outputs, each of which can be powered inde pendently from VDD or VBAK and can operate either in-phase or in complementary mode An internal oscillator which is fuse-calibrated to provide a 32.768kHz clock source, accuracy is better than ±3% over temperature and supply voltage 96-bit electrically programmable non-volatile fuse memory array 7-bit programmable threshold reset comparator (VBO) between 1.7V and 4V with 24mV resolution Programmable reset duration between 6ms and 5.3 seconds Less than 10μA standby current and less than 12mA maximum operating current (excluding LDO load) I2C interface with 3-bit fuse-settable address complies with I2C fast mode specification General-purpose 8-bit DAC and Comparator General-purpose PWM & PDM output Programmable watchdog counter with a 7.8ms resolution up to 8 seconds delay Description May 22, 2006 Periodic interrupt timer (PIT) with a 30μs resolution up to 36 hours Real time clock with 1/256 second resolution up to Year 2099 Spread spectrum option on the output clock Battery backup facility, which maintains register con- tents less than 2μA consumption 1.7V to 5.5V operating range on the main VDD supply 0.9V to 5.5V operating range on the battery backup supply (VBAK) Edge-triggered, level-sensitive, and toggling interrupt output (INT) General-purpose I/O option on the interrupt pin (INT) Low power, low dropout voltage regulator (LDO) output on PWM pin Switched mode boost, bootstrap boost, and buck regulation control 56 bytes of control registers including a 9-byte scratchpad Small 3mm x 3mm 16-lead MLP package Covered by United States Patent 6,903,986 Semtech, the Semtech logo, MicroBuddy, μBuddy, and μB are marks of Semtech Corporation. All other marks belong to their respective owners. Features |
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