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What is UPD72042?

This electronic component, produced by the manufacturer "NEC", performs the same function as "LSI DEVICES FOR Inter Equipment BusTM (IEBusTM) PROTOCOL CONTROL".


UPD72042 Datasheet PDF - NEC

Part Number UPD72042
Description LSI DEVICES FOR Inter Equipment BusTM (IEBusTM) PROTOCOL CONTROL
Manufacturers NEC 
Logo NEC Logo 


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DATA SHEET
MOS INTEGRATED CIRCUIT
µPD72042
LSI DEVICES FOR Inter Equipment BusTM (IEBusTM)
PROTOCOL CONTROL
The µPD72042 is a microcomputer peripheral LSI device for IEBus protocol control.
The µPD72042 performs 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
• Two communication modes having different
transmission speeds can be selected.
Mode 0
Mode 1
Transmission speed
Approx. 3.9 Kbps
Approx. 17 Kbps
q Built-in IEBus driver and receiver
q Transmission and reception buffers
Transmission buffer : 33 bytes, FIFO
Reception buffer
: 40 bytes, FIFO (capable of
holding more than one frame
of reception data.)
ORDERING INFORMATION
Microcomputer interface
Three-/two-wire serial I/O,
Transfer starting with MSB
Program crashes can be detected by means of a
watchdog timer.
Low power consumption (standby mode):
50 µA (max)
Oscillator frequency (fX): 6 MHz
• frequency accuracy: ±1.5%
Operating voltage: 5 V ±10%
Part number
µPD72042GT
Package
16-pin plastic SOP (9.53 mm (375))
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for availability
and additional information.
Document No. S14870EJ1V0DS00 (1st edition)
Date Published June 2000 N CP(N)
Printed in Japan
©
2000

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UPD72042 equivalent
µPD72042
9. RECOMMENDED SOLDERING CONDITIONS ........................................................................... 87
APPENDIX A MAIN DIFFERENCES BETWEEN µPD72042, µPD72042B, AND µPD6708 ..... 88
APPENDIX B IEBus PROTOCOL ANALYZER ................................................................................ 88
Data Sheet S14870EJ1V0DS00
5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for UPD72042 electronic component.


Information Total 70 Pages
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