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HD64F2149YV Folha de dados(PDF) 970 Page - Renesas Technology Corp |
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HD64F2149YV Folha de dados(HTML) 970 Page - Renesas Technology Corp |
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970 / 1075 page ![]() Appendix B Internal I/O Registers Rev. 3.00 Jan 18, 2006 page 942 of 1044 REJ09B0280-0300 ICMR1—I 2C Bus Mode Register 1 H'FF8F IIC1 ICMR0—I 2C Bus Mode Register 0 H'FFDF IIC0 7 MLS 0 R/W 6 WAIT 0 R/W 5 CKS2 0 R/W 4 CKS1 0 R/W 3 CKS0 0 R/W 0 BC0 0 R/W 2 BC2 0 R/W 1 BC1 0 R/W Bit Initial value Read/Write Bit counter BC2 BC1 0 1 0 1 0 1 BC0 0 1 0 1 0 1 0 1 Note: * Do not set this bit to 1 when the I2C bus format is used. Note: Maximum operating frequency of H8S/2169 and H8S/2149 is 10 MHz. Synchronous serial format 8 1 2 3 4 5 6 7 I2C bus format 9 2 3 4 5 6 7 8 Serial clock select CKS2 CKS1 0 1 0 1 0 1 0 1 0 1 0 1 CKS0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 IICX 0 1 Clock φ/28 φ/40 φ/48 φ/64 φ/80 φ/100 φ/112 φ/128 φ/56 φ/80 φ/96 φ/128 φ/160 φ/200 φ/224 φ/256 Wait insertion bit 0 Data and acknowledge bits transferred consecutively 1 Wait inserted between data and acknowledge bits MSB-first/LSB-first select* 0 MSB-first 1 LSB-first φ = 5 MHz 179 kHz 125 kHz 104 kHz 78.1 kHz 62.5 kHz 50.0 kHz 44.6 kHz 39.1 kHz 89.3 kHz 62.5 kHz 52.1 kHz 39.1 kHz 31.3 kHz 25.0 kHz 22.3 kHz 19.5 kHz φ = 8 MHz Transfer Rate 286 kHz 200 kHz 167 kHz 125 kHz 100 kHz 80.0 kHz 71.4 kHz 62.5 kHz 143 kHz 100 kHz 83.3 kHz 62.5 kHz 50.0 kHz 40.0 kHz 35.7 kHz 31.3 kHz φ = 10 MHz 357 kHz 250 kHz 208 kHz 156 kHz 125 kHz 100 kHz 89.3 kHz 78.1 kHz 179 kHz 125 kHz 104 kHz 78.1 kHz 62.5 kHz 50.0 kHz 44.6 kHz 39.1 kHz |
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