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UPD72042B

更新时间： 2024-09-15 22:52:35

品牌	Logo	应用领域
日电电子 - NEC		/
页数	文件大小	规格书
92页	534K
描述
LSI DEVICES FOR Inter Equipment BusTM (IEBusTM) PROTOCOL CONTROL

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中文翻译

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数据手册

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UPD72042B 数据手册

DATA SHEET

MOS INTEGRATED CIRCUIT

µPD72042A, 72042B

LSI DEVICES FOR Inter Equipment Bus^TM(IEBus^TM)

PROTOCOL CONTROL

The µPD72042A and µPD72042B are microcomputer peripheral LSI devices for IEBus protocol control.

The µPD72042A and µPD72042B perform all the processing required for layers 1 and 2 of the IEBus. The devices

incorporate large transmission and reception buffers, allowing the microcomputer to perform IEBus operations without

interruption. They also contain an IEBus driver and receiver, allowing them to directly connected to the bus directly.

FEATURES

Control of layers 1 and 2 of the IEBus protocol

• Support of a multi-master scheme

• Broadcast function

Microcomputer interface

•

Three-/two-wire serial I/O

• Transfer starting with MSB : µPD72042A

• Transfer starting with LSB : µPD72042B

Program crashes can be detected by means of a

watchdog timer.

• Two communication modes having different

transmission speeds can be selected.

•

When operating

at 6 MHz

When operating

at 6.29 MHz

Low power consumption (standby mode):

50 µA (max)

Mode 0

Mode 1

Approx. 3.9 Kbps

Approx. 17 Kbps

Approx. 4.1 Kbps

Approx. 18 Kbps

Oscillator frequency (fX): 6 MHz, 6.29 MHz

• frequency accuracy: ±1.5%

Operating voltage: 5 V ±10%

● Built-in IEBus driver and receiver

● Transmission and reception buffers

Transmission buffer : 33 bytes, FIFO

Reception buffer

: 40 bytes, FIFO (capable of

holdingmorethanoneframe

of reception data.)

ORDERING INFORMATION

Part number

Package

Starting with MSB/LSB

µPD72042AGT

µPD72042BGT

16-pin plastic SOP (375 mil)

MSB

LSB

The information in this document is subject to change without notice.

The mark shows major revised points.

Document No. S13990EJ2V0DS00 (2nd edition)

(Previous No. ID-3649)

Date Published January 1999 N CP(N)

Printed in Japan

1995

12 3 4 5 6 7...92

中文翻译

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