参数资料
型号: ST72C171K2B6
厂商: STMICROELECTRONICS
元件分类: 微控制器/微处理器
英文描述: 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PDIP32
封装: SHRINK, PLASTIC, DIP-32
文件页数: 57/152页
文件大小: 2156K
代理商: ST72C171K2B6
ST72C171
15/152
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
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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