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Details, datasheet, quote on part number:SH3002
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| Part: | SH3002 |
| Category: | Microcontrollers => MicroBuddy™ Multifunction for Microcontroller |
| Description: | MicroBuddy™ Reset Management And Clock Management Support ic For Microcontrollers |
| Company: | Semtech Corporation |
| Datasheet: | Download SH3002 datasheet File size : 327 kB |
| Request For quote: | Find where to buy SH3002
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Datasheet text preview:
SH3002 MicroBuddyTM Reset Management and Clock Management Support IC for Microcontrollers
SYSTEM MANAGEMENT
Description
The programmable SH3002 MicroBuddyTM (µBuddyTM) 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).
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
CLKOUT CLK32
13 12 11
CLKIN
15
Applications
Home automation and security Consumer products Portable/handheld computers Industrial equipment Any microcontroller-based product VSS VREG VDD NC
1 2 3 4
16
IO/INT
14
µBTM SH3002
5 6 7 8
TEST (VSS) RST RREF
10 NRST 9
V+ CBYPASS
VDD XIN XOUT GPIO WITH INT 16 15 14 13
NRESET
3mm MLP (QFN) Package
1 2 3 4
µB
TM
SH3002
5 6 7 8
12 11 10 9
µController
GND
Typical Application Circuit
Semtech, the Semtech logo, MicroBuddy, µBuddy, and µB are marks of Semtech Corporation. All other marks belong to their respective owners.
2003-10
Copyright ©2002-2003 Semtech Corporation
1
SH3002 data sheet V1.12
VSS
VSS www.semtech.com
NC
NC
SH3002 MicroBuddyTM
SYSTEM MANAGEMENT
Description Ordering Information
SH3002IMLTR EVK-SH3000USB SH3000EK.pdf SH3000UM.pdf IC SH3000 evaluation kit SH3000 Evaluation Kit User Guide SH3000 Reference Manual MLP 3 x 3 mm, 16 pins, temp. range -40° C to +85° C
Block Diagram
Microcontroller
VDD 32.768 KH Z XIN XOUT RESET I/O PIN
V+
CLKOUT
CLK32
2
3
13
16
CLKIN
VREG
VDD
15
NC
4 Regulators
VSS
Clock Driver & Start/Stop Logic Post-scaler HF Oscillator & FLL
Nonvolatile Memory Calibration & Default Settings
1
VSS
8
NC
Voltage Reference LF Oscillator
RST
VDD Monitor
Reset Drivers & Logic
11
NRST
5
NC
10 Control Logic
TEST
6
VSS
12
7
RREF
Periodic Interrupt / Wake-up Timer RC Oscillator SH3002 µBuddyTM
Interrupt Serial I/O
IO/INT
9
14
Copyright ©2002-2003 Semtech Corporation
2
V1.12
www.semtech.com
SH3002 MicroBuddyTM
SYSTEM MANAGEMENT
Pin Descriptions
Pin 1 2 3 4 5 6 7 8 9 10 11 Name VSS VREG VDD NC NC NC VSS VSS RREF
NRST
Type Power Power Power
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. Not connected - reserved Not connected - reserved Not connected - reserved Ground, 0 V. All VSS pins and TEST (VSS) pin must be connected together. Ground, 0 V. All VSS pins and TEST (VSS) pin must be connected together. Optional 1 MOhm external bias resistor for the internal 32.768 kHz RC oscillator. Can be used to set, trim or modulate the internal RC oscillator. Keep open if not used. Active low system reset output. Asserted with a strong low state when a reset condition occurs. Weakly pulled to VDD internally when not active. This signal is valid for VDD as low as 1 V. Keep open if not used. Active high system reset output. Asserted with a strong high state when a reset condition occurs. Weakly pulled to VSS internally when not active. This signal is valid for VDD as low as 1 V. Keep open if not used. Factory test enable. All VSS pins and TEST (VSS) pin must be connected together. Buffered internal 32.768 kHz clock, derived according to the CLKSEL pin setting. This pin uses backup power for the buffer when VDD is not present. When driving high, this signal is either at VBAK or VDD (if VDD is higher than the reset threshold). When enabled, this signal runs continuously independent of CLKOUT activity. Minimize the external load to reduce power consumption during backup operations. When disabled, this pin is driven to VSS. Keep open if not used. Serial communications interface and interrupt output pin. This pin is internally weakly pulled to the opposite of the programmed interrupt polarity. For example, if interrupt is programmed to be active low, this pin is weakly pulled to VDD when inactive. Keep open if not used. Clock activity sense input. Used to detect when the target microcontroller enters stop mode (which disables its clock). Connect to the microcontroller's clock output or oscillator output pin. Connect to VSS when not used. CLKIN must not be left open. Programmable high frequency clock output. Connect to the target microcontroller's clock input or oscillator input pin. Keep open if not used.
Power Power Analog Digital Out Digital Out Digital In
RST
12 TEST (VSS)
13
CLK32
Digital Out
14
IO/INT
I/O
15 16
CLKIN CLKOUT
Digital In Digital Out
Copyright ©2002-2003 Semtech Corporation
3
V1.12
www.semtech.com
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