HD404358 Datasheet, PDF (62/102 Pages) Renesas Technology Corp – microcomputer has an A/D converter,

HD404358 Series
Port Mode Register A (PMRA: $004): Four-bit write-only register that selects D₃/BUZZ pin function as
shown in figure 44. It is reset to $0 by MCU reset.
Serial Interface
The serial interface serially transfers and receives 8-bit data, and includes the following features.
• Multiple transmit clock sources
 External clock
 Internal prescaler output clock
 System clock
• Output level control in idle states
Five registers, an octal counter, and a selector are also configured for the serial interface as follows.
Serial data register (SRL: $006, SRU: $007)
Serial mode register (SMR: $005)
Port mode register A (PMRA: $004)
Port mode register C (PMRC: $025)
Miscellaneous register (MIS: $00C)
Octal counter (OC)
Selector
The block diagram of the serial interface is shown in figure 51.
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