SH3003 Datasheet, PDF (6/30 Pages) Semtech Corporation – MicroBuddy® Support IC for Microcontrollers

SH3003
POWER MANAGEMENT
Pin Configuration
Not authorized for release outside of Semtech - DRAFT
Ordering Information
Device
SH3003IMLTR
Package
MLP 3x3mm, 16 pins
16 15 14 13
VSS 1
VREG 2
TOP VIEW
12 TEST VSS
11 RST
VDD 3
VBAK 4
10 NRST
T
9 NRST
5678
SH3003IMLTRT
EVK-SH3000USB
SH3000EK.pdf
SH3000UM.pdf
MLP 3x3mm, 16 pins, lead-free
SH3000 Evaluation Kit
SH3000 Evaluation Kit User Guide
SH3000 Reference Manual
MLP 16: 3x3 16 LEAD
Pin Descriptions
Pin Pin Name
Type
Pin Function
T
1
VSS
2
VREG
3
VDD
Power
Power
Power
Thermal pad - connect to ground
Ground, 0V - All VSS pins and TEST (VSS) pin must be connected together.
Output of internal Voltage Regulator, 2.2V nominal. This pin can power exter-
nal loads of < 5mA. If load is “noisy” it requires a bypass capacitor. May be left
unconnected or used as a high logic level signal for CLKSEL pin.
Main power supply, +2.3 to +5.5V
4
VBAK
Power
Back-up power supply for real-time clock, +2.3 to +5.5V (+1.8 to +5.5V typical).
This voltage can be higher or lower than VDD. Connect a backup battery or
backup capacitor (with external recharge circuit). Connect to VDD if not used.
5
XIN
Analog In _{Oscillator pins for optional external low frequency crystal, typically 32.768kHz}
6
XOUT
Analog Out ^{crystal with nominal 12.5pF load cap. Keep open or connect to VSS if not used.}
A logic low level selects the internal 32.768kHz RC oscillator (CLKSEL tied to
VSS). A high state on this pin selects the 32.768kHz crystal oscillator (CLKSEL is
connected to VREG). The SH3003 always starts up using the internal 32.768kHz
7
CLKSEL
Digital In RC oscillator. If CLKSEL is high, the internal 32.768kHz clock switches to the
crystal oscillator once it has stabilized, and RC oscillator is disabled for power
conservation. Do not connect CLKSEL to any signals except VSS or VREG. CLKSEL
must not be left open.
8
VSS
Power
Ground, 0V. All VSS pins and TEST (VSS) pin must be connected together.
©2006 Semtech Corp.
6
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