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7641 датащи(PDF) 36 Page - Renesas Technology Corp |
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7641 датащи(HTML) 36 Page - Renesas Technology Corp |
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36 / 385 page ![]() Rev.2.00 Aug 28, 2006 page 19 of 113 7641 Group REJ09B0336-0200 HARDWARE FUNCTIONAL DESCRIPTION Fig. 14 Port block diagram (3) HOLD S1 HLDA (13) Port P71 Data bus Direction register Port latch HOLD function enable bit HOLD function enable bit (15) Port P73 IBF1 output enable bit Data bus buffer function select bit HOLD function enable bit Direction register Port latch IBF1 output Data bus (17) Port P80 Direction register Port latch Data bus SRDY output select bit (UART2) Transmit enable bit SRDY output SPI mode select bit SPI mode select bit Control for SPI compatible mode (UART2) UTXD2 output Data bus buffer function select bit (14) Port P72 Data bus Direction register Port latch Data bus buffer function select bit Data bus buffer function select bit (16) Port P74 Data bus Direction register Port latch OBF1 output enable bit OBF1 output (18) Port P81 Data bus Direction register Port latch (Serial I/O) Internal synchronous clock select bits Serial I/O port select bit (UART2) Receive enable bit (UART2) Receive enable bit (Serial I/O) Internal synchronous clock select bits (UART2) Receive enable bit (UART2) URXD2 input Serial I/O clock input Serial I/O clock output |
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