NJU9214FG1 Просмотр технического описания (PDF) - Japan Radio Corporation

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производитель

NJU9214FG1

4•3/4 DIGIT SINGLE CHIP DIGITAL MULTIMETER LSI

Japan Radio Corporation  

NJU9214

s BLOCK DIAGRAM

REGURATOR

A

DCV, ACV,

Ω, , ,CAP,

DCmA, ACmA,

FRQ, rpm

COM

REFERENCE

VDDA AGND VSSA VDDD VSSD

+5.0V 0V -5.0V 5.0V 0V

IVSL, IVSH

VI,

VR2 to 7,

OVH,

OVX

REFERENCE

BUFFER

ADP

SGND

HIGH

SPEED

A/D section

HIGH

RESOLUTION

A/D SECTION

CAPACITOR

A/D SECTION

BATT

LOW

DETECTOR

FRQ

BUFFER ANALOG

SECTION

RMSIN

SWITCH

NETWORK I/F

HIGH SPEED

A/D I/F

HIGH RESOLUTION A/D I/F

RD1 to 4

FC1 to 4,

KI1 to 5

TRX

TXS

RST

PON

KEY MATRIX

RELAY

CONT-

ROLER

SWITCH

NETWORK

CONTROLLER

HIGH SPEED

A/D

CONTROLLER

HIGH RESOLUTION

A/D CONTROLLER

POWER ON

INITIALIZE

4bitBUS

DIGITAL

SECTION

KEY

CONTROLLER

RS232C

CONTROLLER

BUZZER

CONTROLLER

4bit CPU

LCD

CONTROLER

LCD DRIVER and POWER

TEST

OSC

RS232C

DRIVER

BZ

BUZZER

COM1 to 4 SEG1 to 28

LCD

T1 to T3

XT1 XT2

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