UPD78064YGF-XXX-3BA(1992) データシートの表示（PDF） - NEC => Renesas Technology

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UPD78064YGF-XXX-3BA
(Rev.:1992)

8-BIT SINGLE-CHIP MICROCOMPUTER

NEC => Renesas Technology 

mPD78062Y,78063Y,78064Y

5.6 A/D CONVERTER

Eight 8-bit resolution A/D converter channels are incorporated.

The following two types of start-up method are available.

Ý Hardware start

Ý Software start

Fig. 5-8 A/D Converter Block Diagram

H

ANI0/P10

ANI1/P11

ANI2/P12

ANI3/P13

ANI4/P14

ANI5/P15

ANI6/P16

ANI7/P17

Selec-

tor

Series Resistor String

Sample & Hold Circuit

Voltage Comparator

Tap

Selec-

tor

4

Successive Approximation

Register (SAR)

AVDD

AVREF

AVSS

INTP3/P03

Edge

Detector

Control

Circuit

A/D Conversion Result

Register (ADCR)

INTAD

INTP3

Internal Bus

5.7 SERIAL INTERFACE

Two clocked serial interface channels are incorporated.

Ý Serial interface channel 0

Ý Serial interface channel 2

Table 5-3 Serial Interface Channel Block Diagram

H

Function

3-wire serial I/O mode

2-wire serial I/O mode

Asynchronous serial interface

(UART) mode

I2C bus mode

Serial Interface Channel 0

l (MSB/LSB-first switchable)

l (MSB-first)

——

l (MSB-first)

Serial Interface Channel 2

l (MSB/LSB-first switchable)

——

l (Dedicated baud rate generator

incorpoorated)

——

23

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