D72042

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 The information in this document is subject to change without notice. Before using this document, please confirm ...