DATA SHEET
MOS INTEGRATED CIRCUIT
µPD72042
LSI DEVICES FOR Inter Equipment BusTM (IEBus TM) PROTOCOL CONTROL
The µPD...
DATA SHEET
MOS INTEGRATED CIRCUIT
µPD72042
LSI DEVICES FOR Inter Equipment BusTM (IEBus TM) 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.
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):
Transmission speed Mode 0 Mode 1
q q
50 µA (max)
Oscillator frequency (f ):
X
6 MHz
Approx. 3.9 Kbps Approx. 17 Kbps
frequency accuracy: ±1.5%
Operating
voltage: 5 V ±10%
Built-in IEBus driver and receiver Transmission and reception buffers Transmission buffer Reception buffer : 33 bytes, FIFO : 40 bytes, FIFO (capable of holding more than one frame of reception data.)
ORDERING INFORMATION
Part number Package 16-pin plastic SOP (9.53 mm (375))
µPD72042GT
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