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ST72F321BAR6TARE Datasheet(PDF) 4 Page - STMicroelectronics

No. de pieza ST72F321BAR6TARE
Descripción Electrónicos  8-bit MCU for automotive with 32 to 60 Kbyte Flash/ROM, ADC, 5 timers, SPI, SCI, I2C interface
Download  247 Pages
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Fabricante Electrónico  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72F321BAR6TARE Datasheet(HTML) 4 Page - STMicroelectronics

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Contents
ST72321Bxxx-Auto
4/247
8.4.1
Active Halt mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
8.4.2
Halt mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
9
I/O ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
9.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
9.2
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
9.2.1
Input modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
9.2.2
Output modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
9.2.3
Alternate functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
9.3
I/O port implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
9.4
Low power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
9.5
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
10
Watchdog timer (WDG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
10.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
10.2
Main features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
10.3
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
10.4
How to program the watchdog timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
10.5
Low power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
10.6
Hardware watchdog option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
10.7
Using Halt mode with the WDG (WDGHALT option) . . . . . . . . . . . . . . . . 85
10.8
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
10.9
Register description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
10.9.1
Control register (WDGCR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
11
Main clock controller with real-time clock and beeper (MCC/RTC) . . 87
11.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
11.2
Programmable CPU clock prescaler . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
11.3
Clock-out capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
11.4
Real-time clock timer (RTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
11.5
Beeper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
11.6
Low power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
11.7
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
11.8
Main clock controller registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
11.8.1
MCC control/status register (MCCSR) . . . . . . . . . . . . . . . . . . . . . . . . . . 89


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