M38508MCH-XXXSS View Datasheet(PDF) - Renesas Electronics

Part Name

Description

Manufacturer

M38508MCH-XXXSS

8-BIT CISC SINGLE-CHIP MICROCOMPUTER

Renesas Electronics 

HARDWARE

FUNCTIONAL DESCRIPTION SUPPLEMENT

Figures 76 shows the A-D conversion equivalent circuit, and Figure

77 shows the A-D conversion timing chart.

VCC VSS

VCC AVSS

About 2 kΩ

AN0

AN1

AN2

AN3

AN4

VIN

Sampling

clock

b4 b2 b1 b0

A-D control register

C

Chopper

amplifier

A-D conversion register (high-order)

VREF

AVSS

Vref

Built-in

D-A converter

Reference

clock

A-D conversion register

(low-order)

AD conversion interrupt request

Fig. 76 A-D conversion equivalent circuit

φ

Write signal for A-D

control register

AD conversion

completion bit

Sampling clock

Fig. 77 A-D conversion timing chart

61 cycles

1-76

3850 Group (Spec. H) User’s Manual

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