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UPD70F3201 Datasheet(PDF) 44 Page - NEC |
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UPD70F3201 Datasheet(HTML) 44 Page - NEC |
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44 / 98 page  Preliminary Product Information U15436EJ1V0PM 44 µµµµPD703201, 703201Y, 703204, 703204Y, 70F3201, 70F3201Y, 70F3204, 70F3204Y 12.2 Asynchronous Serial Interface (UART0 and UART1) The asynchronous serial interface (UART0 and UART1) has the following features. Two modes • Operation stop mode (used when serial transfers are not performed to enable a reduction in power consumption) • Asynchronous serial interface mode Full-duplex transmission 2-pin configuration • TXD0 and TXD1: Transmit data output pins • RXD0 and RXD1: Receive data input pins 3 types of interrupt sources • Receive error interrupt (INTSRE0 and INTSRE1) • Receive end interrupt (INTSR0 and INTSR1) • Transmit end interrupt (INTST0 and INTST1) Character length: 7 bits/8 bits Parity function: Odd, even, 0, none Transmission stop bit: 1 bit/2 bits On-chip baud rate generator The following figure shows the configuration of the asynchronous serial interface (UART0 and UART1). Parity Framing Overrun Internal bus Asynchronous serial interface mode register n (ASIMn) Receive buffer (RXBn) Receive shift register Reception control parity check Transmit buffer (TXBn) Transmit shift register Addition of transmission control parity BRGn INTSREn INTSRn INTSTn RXDn TXDn Remark n = 0, 1 |
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