SH3003 Datasheet, PDF (8/30 Pages) Semtech Corporation – MicroBuddy® Support IC for Microcontrollers

POWER MANAGEMENT
Block Diagram
SH3003
Not authorized for release outside of Semtech - DRAFT
Microcontroller
32.768
VDD
KHZ
XIN XOUT
RESET
I/O PIN
V+
VBAK
4
VSS
1
VSS
8
XIN
5
XOUT
6
CLKSEL
7
RREF
9
2
3
Regulators &
Battery Back-up
Voltage
Reference
LF Oscillator
XTAL
Oscillator
Select
Logic
RC
Oscillator
13
16 15
Clock Driver &
Start/Stop Logic
Post-scaler
HF Oscillator
& FLL
VDD Monitor
Watchdog
Real Time Clock
Periodic Interrupt
/ Wake-up Timer
SH3003 μBuddy™
Nonvolatile Memory
Calibration &
Default Settings
Reset Drivers
& Logic
Control Logic
RST
11
NRST
10
TEST
12
Interrupt
Serial I/O
IO/INT
14
©2006 Semtech Corp.
8
www.semtech.com