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TP3465V
MICROWIRE Interface Device (MID)
TL/H/10803
TP346
MICROWIR
Interfac
Devic
(MID)July 1999
TP3465 MICROWIRETM Interface Device (MID)
General DescriptionThe MICROWIRETM Interface Device MID givesa general
microprocessor (suchas National Series 32000É proces-
sors, Intel 80C188, 80C86or 80286, Motorola 6800 and
68000 familyof processors)the abilityto communicateeffi-
ciently withupto eight peripheral devicesviathe serialMI-
CROWIRE interface.TheMID causes eachof theperipheral
devicesto appeartothemPas memory mapped locations, performingallthe data serializationand transfer proto-
colstoand fromthe peripherals.
Applications ISDN Terminal Adapters Digital Line cards (ISDNand Non ISDN) Analog Linecards using National COMBOÉ Interfacingto industry standard serial EEPROMs Interfacingto industry standard MICROWIRE peripheral
devices suchas Analogto Digital Converters, LCD driv-
ers, clock generators
Features Multiplexedand Non-multiplexed microprocessorbus
compatible National/Inteland Motorola microprocessorbus
compatible Microprocessor Clock (CKIN)upto20 MHz MICROWIRE clock speedsup to5 MHz Directly compatible with8-and 16-bit MICROWIRE
peripherals Commercial temperature range 0C to +70C TP3465 for8 Chip Select output Memory mapped peripherals Programmable MICROWIRE Clockto communicate with
devicesof different speeds Operatesas MICROWIREbus masteror slave 28-pin PLCC Package CMOS, Low Power
Block Diagram
TL/H/10803–1
FIGURE1. MICROWIRE Interface DeviceMID
COMBOÉ,Series 32000Éand TRI-STATEÉare registeredtrademarksof National SemiconductorCorporation.
MICROWIRETM isatrademarkof National SemiconductorCorporation.
C1999 National SemiconductorCorporation
