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ST72325XXX 数据表(PDF) 3 Page - STMicroelectronics

部件名 ST72325XXX
功能描述  SCI asynchronous serial interface
Download  243 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

ST72325XXX 数据表(HTML) 3 Page - STMicroelectronics

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Contents
Doc ID 13770 Rev 3
3/243
6.4
Multi-oscillator (MO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.5
Reset sequence manager (RSM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.5.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.5.2
Asynchronous external RESET pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
6.5.3
External power-on RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.5.4
Internal low voltage detector (LVD) RESET . . . . . . . . . . . . . . . . . . . . . . 46
6.5.5
Internal watchdog RESET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
6.6
System integrity management (SI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.6.1
Low voltage detector (LVD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.6.2
Auxiliary voltage detector (AVD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.6.3
Clock security system (CSS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.6.4
Low power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.6.5
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.6.6
System Integrity (SI) Control/Status register (SICSR) . . . . . . . . . . . . . . 52
7
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.2
Masking and processing flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.3
Interrupts and low power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
7.4
Concurrent and nested management . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
7.5
Interrupt register description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
7.5.1
CPU CC register interrupt bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
7.5.2
Interrupt software priority registers (ISPRx) . . . . . . . . . . . . . . . . . . . . . . 59
7.6
External interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
7.6.1
I/O port interrupt sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
7.6.2
External interrupt control register (EICR) . . . . . . . . . . . . . . . . . . . . . . . . 63
8
Power saving modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
8.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
8.2
Slow mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
8.3
Wait mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
8.4
Active Halt and Halt modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
8.4.1
Active Halt mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
8.4.2
Halt mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
9
I/O ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74


类似零件编号 - ST72325XXX

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