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ST72C171 Datasheet(PDF) 15 Page - STMicroelectronics

No. de pieza ST72C171
Descripción Electrónicos  8-BIT MCU with 8K FLASH, ADC, WDG, SPI, SCI, TIMERS SPGAs Software Programmable Gain Amplifiers, OP-AMP
PDF  152 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72C171 Datasheet(HTML) 15 Page - STMicroelectronics

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4 SUPPLY, RESET AND CLOCK
MANAGEMENT
The device includes a range of utility features for
securing the application in critical situations (for
example in case of a power brown-out), and re-
ducing the number of external components. An
overview is shown in Figure 8.
4.1 Main Features
s
Supply Manager
– Main supply Low voltage detection (LVD)
– Global power down
s
Reset Sequence Manager (RSM)
s
Multi-Oscillator (MO)
– 4 Crystal/Ceramic resonator oscillators
– 2 External RC oscillators
– 1 Internal RC oscillator
s
Clock Security System (CSS)
–Clock Filter
– Backup Safe Oscillator
s
Main Clock controller (MCC)
Figure 8. Clock, Reset and Supply Block Diagram
IE
SOD
0
-
-
-
RF
RF
CRSR
CSS
-
WDG
fOSC
MAIN CLOCK
CONTROLLER
(MCC)
CF INTERRUPT
LVD
LOW VOLTAGE
DETECTOR
(LVD)
MULTI-
OSCILLATOR
(MO)
fCPU
FROM
WATCHDOG
PERIPHERAL
MCO
OSCOUT
OSCIN
RESET
VDD
VSS
RESET SEQUENCE
MANAGER
(RSM)
CLOCK
FILTER
SAFE
OSC
CLOCK SECURITY SYSTEM
(CSS)



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