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SH3000 Dataheets PDF



Part Number SH3000
Manufacturers Semtech
Logo Semtech
Description Low-Power Programmable Multifunction Support IC for Microcontrollers
Datasheet SH3000 DatasheetSH3000 Datasheet (PDF)

SH3000 MicroBuddy™ www.DataSheet4U.com Low-Power Programmable Multifunction Support IC for Microcontrollers SYSTEM MANAGEMENT Description The programmable SH3000 MicroBuddy™ (µBuddy™) provides all mandatory microcontroller support functions: ♦ CPU Supervisor ♦ Clock Management System ♦ Real Time Support ♦ Auxiliary functions Three components make a complete system: any microcontroller, the SH3000, and a bypass capacitor. This low-cost system would consume very little power and have clock-freque.

  SH3000   SH3000



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SH3000 MicroBuddy™ www.DataSheet4U.com Low-Power Programmable Multifunction Support IC for Microcontrollers SYSTEM MANAGEMENT Description The programmable SH3000 MicroBuddy™ (µBuddy™) provides all mandatory microcontroller support functions: ♦ CPU Supervisor ♦ Clock Management System ♦ Real Time Support ♦ Auxiliary functions Three components make a complete system: any microcontroller, the SH3000, 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 32.768 kHz watch crystal, raises the clock frequency accuracy to ± 0.0256% (± 256 ppm). 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. 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). A backup power source may also be connected to the SH3000. The IC can directly accommodate 2/3-cell zinccarbon/alkaline, 2/3-cell mercury, 2/3/4-cell NiCd/NiMH, 1cell Li/Li+ batteries, or a super cap. Features ♦ ♦ Highly integrated IC - 3mm x 3mm x 0.9 mm 16-lead MLP (QFN) package CPU Supervisor - Low VDD reset programmable from 2.3 V to 4.3 V - Watchdog timer with programmable timeout periods - Both active-high and active-low reset outputs Clock Management System - Replaces High-Frequency (HF) crystal or resonator - Programmable clock output from 32 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 Real Time Support - 179-year real time clock, battery backup capable - Dedicated 32 kHz buffered clock output - Built-in trim for 32.768 kHz oscillator to ± 4ppm - Programmable periodic interrupt / wakeup timer Auxiliary functions - 4-byte (32-bit) scratchpad RAM, loaded on reset with factory-set value (zero or optional ID code) - All settings programmable in real-time, defaults restored from OTP memory on reset Operates from 2.3 V to 5.5 V IDD <850µA / 2MHz, <3mA / 16MHz, <10µA/standby IBUP <2µA / IBSB <50nA (battery backup / standby) Protected by issued and pending US and International Patents ♦ ♦ ♦ ♦ ♦ ♦ ♦ Pin Configuration CLKOUT CLKIN 15 Applications ♦ ♦ ♦ ♦ ♦ Home automation and security Consumer products Portable/handheld computers Industrial equipment Any microcontroller-based product V+ CBYPASS VDD XIN XOUT GPIO WITH INT 16 15 14 13 NRESET 16 IO/INT 14 CLK32 13 12 11 VSS VREG VDD VBAK 1 2 3 4 5 µBTM SH3000 6 7 8 TEST (VSS) RST RREF 10 NRST 9 1 2 3 4 µBTM SH3000 5 6 7 8 12 11 10 9 µController GND 3mm MLP (QFN) Package 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. Typical Application Circuit with High Clock Accuracy 2005-08-08 Copyright ©2003-2005 Semtech Corporation 1 CLKSEL XOUT V1.15 www.semtech.com VSS XIN SH3000 MicroBuddy™ www.DataSheet4U.com SYSTEM MANAGEMENT Description Ordering Information SH3000IMLTR SH3000IMLTRT EVK-SH3000USB SH3000EK.pdf SH3000UM.pdf IC IC Evaluation kit Evaluation kit user manual User manual MLP 3 x 3 mm 16 pins, -40° C to +85° C MLP 3 x 3 mm 16 pins, -40° C to +85° C, Lead Free Block Diagram Microcontroller VDD 32KHZ XIN XOUT RESET I/O PIN V+ CLK32 CLKOUT 2 3 13 16 CLKIN VREG VDD 15 VBAK 4 Regulators & Battery Back-up VSS Clock Driver & Start/Stop Logic Post-scaler HF Oscillator & FLL OTP Memory Calibration & Default Settings 1 VSS 8 XIN Voltage Reference LF Oscillator XTAL Oscillator RST VDD Monitor Watchdog Reset Drivers & Logic 11 NRST 5 XOUT 10 Control Logic TEST 6 CLKSEL Real Time Clock Select Logic RC Oscillator SH3000 µBuddy™ Periodic Interrupt / Wake-up Timer 12 7 RREF Interrupt Serial I/O IO/INT 9 14 Copyright ©2003-2005 Semtech Corporation 2 V1.15 www.semtech.com SH3000 MicroBuddy™ www.DataSheet4U.com SYSTEM MANAGEMENT Pin Descriptions Pin 1 2 3 4 5 6 Name VSS VREG VDD VBAK XIN XOUT Type Power Power Power Power Analog In Analog Out Function Ground, 0 V. All VSS pins and TEST (VSS) pin must be connected together. Output of internal Voltage Regulator, 2.2 V nominal. This pin can power external loads of <5 mA. If load is “noisy” it requires a bypass capacitor. May be left unconnected or used as a high logic level signal for CLKSEL pin (see below). Main power supply, +2.3 to +5.5 V. Backup power supply for real tim.


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