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M32C/86 датащи(PDF) 214 Page - Renesas Technology Corp |
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M32C/86 датащи(HTML) 214 Page - Renesas Technology Corp |
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214 / 505 page ![]() Page 191 9 7 4 f o 5 0 0 2 , 8 0 . p e S 0 0 . 1 . v e R 0 0 1 0 - 4 0 2 0 B 9 0 J E R 17. Serial I/O ) T 6 8 / C 2 3 M , 6 8 / C 2 3 M ( p u o r G 6 8 / C 2 3 M UARTi Special Mode Register 4 (i=0 to 4) Symbol Address After Reset U0SMR4 to U4SMR4 036416, 02E416, 033416, 032416, 02F416 0016 RW Start Condition Generate Bit(1) Restart Condition Generate Bit(1) Stop Condition Generate Bit(1) SCL, SDA Output Select Bit ACK Data Bit ACK Data Output Enable Bit 0: Clear 1: Start 0: Clear 1: Start 0: Clear 1: Start 0: Selects the serial I/O circuit 1: Selects the start/stop condition generating circuit 0: ACK 1: NACK Bit Name Bit Symbol Function NOTES: 1. When each condition is generated, the STAREQ, RSTAREQ or STPREQ bit is set to "0". When a condition generation is incomplete, the bit remains unchanged as "1". SCL Wait Output Bit 3 SCL Output Stop Enable Bit 0: SCL "L" hold disabled 1: SCL "L" hold enabled 0: Disabled 1: Enabled 0: Serial I/O data output 1: ACK data output STSPSEL ACKD ACKC SCLHI STAREQ STPREQ RSTAREQ SWC9 RW RW RW RW RW RW RW RW b7 b6 b5 b4 b3 b2 b1 b0 Figure 17.8 U0SMR4 to U4SMR4 Registers |
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