UPD78323LP datasheet(39/88 Pages) RENESAS

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µPD78323, 78324

3.8

A/D CONVERTER

The

µPD78324 incorporates a high-speed, high-resolution 10-bit analog/digital (A/D) converter. This A/D converter is

equipped with eight analog inputs (AN0 to AN7) and A/D conversion result register (ADCR) which holds the conversion

results. Upon termination of conversion, the interrupt which can start the macro service is generated.

Figure 3-5. A/D Converter Block Diagram

3.9

SERIAL INTERFACE

The

µPD78324 is equipped with the following two independent channels for the serial interface function.

Asynchronous serial interface

Clock synchronous serial interface

•

3-wire serial I/O mode

•

Serial bus interface mode (SBI mode)

Since the

µPD78324 incorporates a baud rate generator, it can set any serial transfer rate irrespective of the operating

frequency. The baud rate generator functions for the 2-channel serial interface.

The serial transfer rate can be selected from 75 bps to 19.2 Kbps by setting the mode register.

AN0

AN1

AN2

AN3

AN4

AN5

AN6

AN7

ADM (8)

Internal Bus

Sample & Hold Circuit

Comparator

SAR (10)

D/A Converter

ADCR (10)

Internal Bus

AVREF

AVSS

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