MC14469FN Просмотр технического описания (PDF) - Motorola => Freescale

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Компоненты Описание

производитель

MC14469FN

Addressable Asynchronous Receiver/Transmitter

Motorola => Freescale 

MC14469

INTERNAL

OSCILLATOR

OSC1

15 MΩ

OSC2

X1

C1

C2

VDATA

1.0 kΩ

DATA LINE

GROUND LINE

NOTE: For externally generated clock,

drive OSC1, float OSC2.

X1 = Ceramic Resonator: 307.2 kHz ± 1 kHz for 4800 baud rate.

C1 and C2 are sized per the ceramic resonator supplier’s

recommendation.

Ceramic Resonator Suppliers:*

1. Morgan Matroc, Inc., Bedford, OH, 216/232–8600

2. Radio Materials Co., Attica, IN, 317/762–2491

* Motorola cannot recommend one supplier over another and

in no way suggests that this is a complete listing of ceramic

resonator suppliers.

Figure 3. Oscillator Circuit

RI TRO

VDD

1.0 µF MC14469

VSS

Figure 4. Rectified Power from Data Lines Circuit

C0

C1

C2

CS

SEND

MC14469

S0

S1

S2

S3

S4

S5

S6

S7

CHANNEL

SELECT

SELECT

CHANNEL,

START

CONVERSION

END

CONVERSION

ANALOG

INPUTS

DIGITAL

OUTPUTS

8–CHANNEL A/D

CONVERTER ASSEMBLY

Figure 5. A–D Converter Interface

MC14469

6

MOTOROLA

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