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EVK-SH3000USB

Description
Reset Management and Clock Management Support IC for Microcontrollers
File Size339KB,22 Pages
ManufacturerSEMTECH
Websitehttp://www.semtech.com
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EVK-SH3000USB Overview

Reset Management and Clock Management Support IC for Microcontrollers

SH3002 MicroBuddy™
Reset Management and Clock Management
Support IC for Microcontrollers
SYSTEM MANAGEMENT
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).
Features
Highly integrated IC
- 3 mm x 3 mm x 0.9 mm 16-lead MLP (QFN) package
CPU Supervisor
- Low V
DD
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
I
DD
<850
µA
/ 2 MHz, <3 mA / 16 MHz, <10
µA
/ standby
Pin Configuration
CLK
OUT
CLK
IN
15
Applications
Home automation and security
Consumer products
Portable/handheld computers
Industrial equipment
Any microcontroller-based product
V
SS
V
REG
V
DD
NC
1
2
3
4
16
IO/I
NT
14
CLK32
13
12
11
µB
TM
SH3002
5
6
7
8
T
EST
(V
SS
)
RST
R
REF
10
N
RST
9
V+
C
BYPASS
V
DD
X
IN
X
OUT
GPIO
WITH
INT
16
15
14
13
N
RESET
3mm MLP (QFN) Package
1
2
3
4
µB
TM
SH3002
5
6
7
8
12
11
10
9
µController
G
ND
Covered by US Patent No. 6,903,986
Typical Application Circuit
Semtech, the Semtech logo, MicroBuddy, µBuddy, and µB are
marks of Semtech Corporation. All other marks belong to their
respective owners.
2005-08-08
Copyright ©2002-2005 Semtech Corporation 1
SH3002 data sheet V1.20
V
SS
V
SS
www.semtech.com
NC
NC

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Description Reset Management and Clock Management Support IC for Microcontrollers Reset Management and Clock Management Support IC for Microcontrollers Reset Management and Clock Management Support IC for Microcontrollers Reset Management and Clock Management Support IC for Microcontrollers Reset Management and Clock Management Support IC for Microcontrollers
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