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STR720 Datasheet(PDF) 5 Page - STMicroelectronics

Part # STR720
Description  ARM720T 16/32-BIT MCU WITH 16K RAM, USB, CAN, 3 TIMERS, ADC, 6 COMMUNICATIONS INTERFACES
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STR720 Datasheet(HTML) 5 Page - STMicroelectronics

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Table of Contents
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14 REAL TIME CLOCK (RTC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
14.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
14.2 Main Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
14.3 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
14.3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
14.3.2 Reset procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
14.3.3 Free-running mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
14.3.4 Configuration mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
14.4 Register description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
14.4.1 Register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
14.5 Programming considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
15 ASYNCHRONOUS AHB-APB BRIDGE (A3BRG) . . . . . . . . . . . . . . . . . 160
15.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
15.2 Main Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
15.3 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
15.3.1 Peripherals clock gating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
15.3.2 Peripherals reset control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
15.4 Register description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
15.4.1 Register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
16 UART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
16.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
16.2 Main Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
16.3 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
16.3.1 Data frames . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
16.3.2 Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
16.3.3 Reception . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
16.3.4 Timeout mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
16.3.5 Baud rate generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
16.3.6 Interrupt control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
16.3.7 Using the ASC interrupts when fifos are disabled . . . . . . . . . . . . . . . . . 176
16.3.8 Using the ASC interrupts when fifos are enabled . . . . . . . . . . . . . . . . . 176
16.4 Register description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
16.4.1 Register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185
17 BUFFERED SPI (BSPI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
17.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
17.2 Main Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
17.3 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186
17.3.1 BSPI Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 187
17.3.2 BSPI Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 188
17.3.3 Transmit FIFO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191
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