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Specifications	Microsoft Word - sh3002.doc lcarey
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SH3002 MicroBuddy™ Reset Management and Clock Management Support IC for Microcontrollers SYSTEM MANAGEMENT 2005-08-08 C

Specifications	Microsoft Word - sh3002.doc lcarey
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Content	SH3002 MicroBuddy™ Reset Management and Clock Management Support IC for Microcontrollers SYSTEM MANAGEMENT 2005-08-08 Copyright ©2002-2005 Semtech Corporation 1 SH3002 data sheet V1.20 www.semtech.com Description The programmable SH3002 MicroBuddy™ (µBuddy™) provides mandatory microcontroller support functions: ♦ CPU Supervisor ♦ Clock Management System ♦ Auxiliary functions Three components make a complete system: any microcontroller, the SH3002, and a bypass capacitor. This low-cost system would consume very little power and have clock-frequency accuracy of ± 0.5%. The SH3002 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 SH3002. The SH3002 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 nonvolatile memory. The microcontroller can change any settings on the fly. If some of the settings must remain fixed, a comprehensive set of write-protect bits is provided for several related groups of registers (with both permanent write-inhibit and lock/unlock capabilities). Applications ♦ Home automation and security ♦ Consumer products ♦ Portable/handheld computers ♦ Industrial equipment ♦ Any microcontroller-based product Features ♦ Highly integrated IC - 3 mm x 3 mm x 0.9 mm 16-lead MLP (QFN) package ♦ CPU Supervisor - Low VDD reset programmable from 2.3 V to 4.3 V - Both active-high and active-low reset outputs ♦ Clock Management System - Replaces high-frequency (HF) crystal or resonator - Programmable clock output from 32.768 kHz to 16 MHz - Speed shift between multiple clock frequencies - Adjustable spectrum spreading for EMI reduction - Directly supports microcontroller STOP function - Deep sleep with instantaneous auto-wakeup ♦ Operates from 2.3 V to 5.5 V - Ideal for battery-operated devices ♦ IDD <850 µA / 2 MHz, <3 mA / 16 MHz, <10 µA / standby Pin Configuration 3mm MLP (QFN) Package SH3002 µBTM 1 2 3 4 56 7 8 12 11 10 9 1615 14 13 VSS VREG VDD NC NC NC V SS V SS RREF NRST TEST (VSS) RST CLK32 IO/I NT CLK IN CLK OUT Typical Application Circuit SH3002 µBTM 1 2 3 4 5 6 7 8 12 11 10 9 16 15 14 13 µController VDD XIN XOUT GPIO WITH INT NRESET GND V+ CBYPASS Covered by US Patent No. 6,903,986 Semtech, the Semtech logo, MicroBuddy, µBuddy, and µB are marks of Semtech Corporation. All other marks belong to their respective owners.
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