Motorola 68000

The Motorola MC68000  (P/N 156-1445-00) is a 16-bit microprocessor monolithic integrated circuit with internal 32-bit architecture and buses, introduced in 1979.

It requires +5 V power only and came initially in 64-pin DIL packages. The external bus is asynchronous.

The 68000 has non-multiplexed data (16 bit) and address (24 bit) buses. The 68008 was a version with an 8-bit external data bus, initially available in a 48-pin DIL package.

The 68010 (1982) included minor improvements to support virtual memory and virtualization.

The data ALU is 16 bits wide.

Initial speed grades were 4, 6 and 8 MHz. Faster versions and CMOS implementations were available later, as were second-source versions.

The original 4 MHz Motorola 68000 CPU was added to the Tek parts inventory in March 1980 as P/N 156-1445-00, at a unit cost of $150 (~$540 in 2022 dollars).

DIL Pinout (click to enlarge)

Links

• Motorola 68000 @ Wikipedia

Used in

• DAS9200 (68010)
• SG5030 (68HC000, PLCC68)

Some instruments using part Motorola 68000

Instrument	Manufacturer	Class	Model	Description	Introduced
4041	Tektronix	Computer	4041	BASIC-programmable computer	1982
AM700	Tektronix	Audio/Video	AM700	Audio Measurement System	(?)
DAS9200	Tektronix	Logic Analyzer	DAS9200	Logic Analyzer	1986
Keithley 182	Keithley	Multimeter	182	6½-digit sensitive voltmeter	(?)
Prism 3002	Tektronix	Logic Analyzer	PRISM 3002	Logic Analyzer	1992
RTD710	Sony/Tektronix	Oscilloscope	RTD710	100 MHz digitizer	1988
SG5030	Tektronix	Plug-in	SG5030	leveled sinewave generator	1991
THS720	Tektronix	Oscilloscope	THS720	100 MHz 2-ch portable digital scope	(?)

Supported by

• 7D02 / PM109
• 1220, 1225, 1230 / PM412
• 1240, 1241 / 12RM25
• DAS9200 / 92DM27