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HD404849FS Datasheet(PDF) 92 Page - Renesas Technology Corp |
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HD404849FS Datasheet(HTML) 92 Page - Renesas Technology Corp |
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92 / 127 page  HD404849 Series 90 Bit Initial value Read/Write Bit name 3 Undefined R/W SR7 2 Undefined R/W SR6 0 Undefined R/W SR4 1 Undefined R/W SR5 Serial data register (upper digit) (SRU: $007) Figure 73 Serial Data Register (SRU) LSB MSB 12 34 5 67 8 Transmit clock Serial output data Serial input data latch timing Figure 74 Serial Interface Input/Output Timing Port Mode Register A (PMRA: $004): This register has the following functions (figure 75). • R2 2/SI pin function selection • R2 3/SO pin function selection Port mode register A (PMRA: $004) is a 2-bit write-only register, and is reset to $0 by MCU reset. Bit Initial value Read/Write Bit name 3 — — Not used 2 — — Not used 0 0 W PMRA0 1 0 W PMRA1 PMRA0 0 1 R23/SO mode selection R23 SO Port mode register A (PMRA: $004) PMRA1 0 1 R22/SI mode selection R22 SI Figure 75 Port Mode Register A (PMRA) |
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