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ST10F273Z4 Datasheet(PDF) 69 Page - STMicroelectronics |
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ST10F273Z4 Datasheet(HTML) 69 Page - STMicroelectronics |
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69 / 188 page  ST10F273Z4 Serial channels 69/188 15 Serial channels Serial communication with other microcontrollers, microprocessors, terminals or external peripheral components is provided by up to four serial interfaces: two asynchronous / synchronous serial channels (ASC0 and ASC1) and two high-speed synchronous serial channel (SSC0 and SSC1). Dedicated Baud rate generators set up all standard Baud rates without the requirement of oscillator tuning. For transmission, reception and erroneous reception, separate interrupt vectors are provided for ASC0 and SSC0 serial channel. A more complex mechanism of interrupt sources multiplexing is implemented for ASC1 and SSC1 (XBUS mapped). 15.1 Asynchronous / synchronous serial interfaces The asynchronous / synchronous serial interfaces (ASC0 and ASC1) provides serial communication between the ST10F273Z4 and other microcontrollers, microprocessors or external peripherals. 15.2 ASCx in asynchronous mode In asynchronous mode, 8- or 9-bit data transfer, parity generation and the number of stop bits can be selected. Parity framing and overrun error detection is provided to increase the reliability of data transfers. Transmission and reception of data is double-buffered. Full- duplex communication up to 2M Bauds (at 64 MHz of fCPU) is supported in this mode. Table 42. ASC asynchronous baud rates by reload value and deviation errors (fCPU = 40 MHz) S0BRS = ‘0’, fCPU = 40 MHz S0BRS = ‘1’, fCPU = 40 MHz Baud Rate (Baud) Deviation Error Reload Value (hex) Baud Rate (Baud) Deviation Error Reload Value (hex) 1 250 000 0.0% / 0.0% 0000 / 0000 833 333 0.0% / 0.0% 0000 / 0000 112 000 +1.5% / -7.0% 000A / 000B 112 000 +6.3% / -7.0% 0006 / 0007 56 000 +1.5% / -3.0% 0015 / 0016 56 000 +6.3% / -0.8% 000D / 000E 38 400 +1.7% / -1.4% 001F / 0020 38 400 +3.3% / -1.4% 0014 / 0015 19 200 +0.2% / -1.4% 0040 / 0041 19 200 +0.9% / -1.4% 002A / 002B 9 600 +0.2% / -0.6% 0081 / 0082 9 600 +0.9% / -0.2% 0055 / 0056 4 800 +0.2% / -0.2% 0103 / 0104 4 800 +0.4% / -0.2% 00AC / 00AD 2 400 +0.2% / 0.0% 0207 / 0208 2 400 +0.1% / -0.2% 015A / 015B 1 200 0.1% / 0.0% 0410 / 0411 1 200 +0.1% / -0.1% 02B5 / 02B6 600 0.0% / 0.0% 0822 / 0823 600 +0.1% / 0.0% 056B / 056C 300 0.0% / 0.0% 1045 / 1046 300 0.0% / 0.0% 0AD8 / 0AD9 153 0.0% / 0.0% 1FE8 / 1FE9 102 0.0% / 0.0% 1FE8 / 1FE9 |
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