MHz Num Characteristic Symbol Min Max Unit

Freescale Semiconductor, Inc.

11.7 AC TIMING SPECIFICATIONS (Continued)

			3.3 V or
		3.3 V	5.0 V	5.0 V
		8.39 MHz	16.78 MHz	25.16 MHz
Num.	Characteristic	Symbol Min Max	Min Max	Min Max	Unit

Freescale Semiconductor, Inc...

304	CLKOUT Low to Data-In Invalid (Fast	tCLDI
	Termination Hold)
30A4	CLKOUT Low to Data-In High Impendance	tCLDH
315	DSACK≈ Asserted to Data-In Valid	tDADI
31A	DSACK≈ Asserted to DSACK≈ Valid (Skew)	tDADV
32	HALT and RESET Input Transition Time	tHRrf
33	CLKOUT Low to BG Asserted	tCLBA
34	CLKOUT Low to BG Negated	tCLBN
356	BR Asserted to BG Asserted (RMC Not	tBRAGA
	Asserted)
37	BGACK Asserted to BG Negated	tGAGN
39	BG Width Negated	tGH
39A	BG Width Asserted	tGA
46	R/ W Width Asserted (Write or Read)	tRWA
46A	R/ W Width Asserted (Fast Termination Write or	tRWAS
	Read)
47A8	Asynchronous Input Setup Time	tAIST
47B	Asynchronous Input Hold Time	tAIHT
485,7	DSACK≈ Asserted to BERR, HALT Asserted	tDABA
53	Data-Out Hold from CLKOUT High	tDOCH
54	CLKOUT High to Data-Out High Impedance	tCHDH
55	R/ W Asserted to Data Bus Impedance Change	tRADC
56	RESET Pulse Width (Reset Instruction)	tHRPW
56A	RESET Pulse Width (Input from External	tRPWI
	Device)
57	BERR Negated to HALT Negated (Rerun)	tBNHN
70	CLKOUT Low to Data Bus Driven (Show Cycle)	tSCLDD
71	Data Setup Time to CLKOUT Low (Show	tSCLDS
	Cycle)
72	Data Hold from CLKOUT Low (Show Cycle)	tSCLDH
80	DSI Input Setup Time	tDSISU
81	DSI Input Hold Time	tDSIH
82	DSCLK Setup Time	tDSCSU
83	DSCLK Hold Time	tDSCH
84	DSO Delay Time	tDSOD

30	—	15	—	10	—	ns
—	180	—	90	—	60	ns
—	100	—	50	—	32	ns
—	60	—	30	—	20	ns
—	400	—	200	—	140	ns
—	60	—	30	—	20	ns
—	60	—	30	—	20	ns
1	—	1	—	1	—	CLKOUT
1	2.5	1	2.5	1	2.5	CLKOUT
2	—	2	—	2	—	CLKOUT
1	—	1	—	1	—	CLKOUT
300	—	150	—	100	—	ns
180	—	90	—	60	—	ns
15	—	8, 5	—	5	—	ns
30	—	15	—	10	—	ns
—	60	—	30	—	20	ns
0	—	0	—	0	—	ns
—	60	—	30	—	20	ns
80	—	40	—	25	—	ns
512	—	512	—	512	— CLKOUT
590	—	590	—	590	—	CLKOUT
0	—	0	—	0	—	ns
0	60	0	30	0	20	ns
30	—	15	—	10	—	ns
20	—	10	—	6	—	ns
30	—	15	—	10	—	ns
20	—	10	—	6	—	ns
30	—	15	—	10	—	ns
20	—	10	—	6	—	ns
—	tcyc	—	tcyc	—	tcyc	ns
	+ 50		+ 25		+ 16

MOTOROLAMC68340 USER’S MANUAL11-9

For More Information On This Product,

Go to: www.freescale.com

MC68340 specifications

The Motorola MC68340 is a highly integrated microprocessor that was introduced in the early 1990s. It belongs to the 68000 family of microprocessors and is designed to cater to the demands of embedded systems, particularly in telecommunications and networking applications. This chip represents a significant evolution in microprocessor technology by combining a microprocessor core with additional peripherals on a single chip, making it an attractive solution for engineers looking to design compact and efficient systems.

One of the key features of the MC68340 is its 32-bit architecture, which allows for significant processing power and data handling capabilities. This architecture enables the processor to handle larger data sizes and perform more complex calculations compared to its 16-bit predecessors. The MC68340 operates at clock speeds typically ranging from 16 MHz to 25 MHz. Its dual instruction pipeline enhances throughput, allowing for simultaneous instruction fetches and executions, which significantly boosts performance.

A notable characteristic of the MC68340 is the inclusion of integrated peripherals, which help reduce the overall component count in a system. Key integrated components include a memory management unit (MMU), a direct memory access (DMA) controller, and various communication interfaces such as serial ports. The memory management capabilities enhance the processor's ability to manage memory resources efficiently, enabling it to support multitasking environments commonly found in modern computing.

In terms of connectivity, the MC68340 features connections for both synchronous and asynchronous serial communication, making it well-suited for networking tasks. The processor supports a range of bus standards, including address and data buses, which facilitate seamless interaction with peripheral devices.

Another important aspect of the MC68340 is its flexibility. The processor supports multiple operating modes, including multiple CPU configurations and compatibility with the Motorola 68000 family, allowing for easier integration into existing systems.

Moreover, the MC68340 boasts low power consumption compared to many of its contemporaries, making it an excellent choice for battery-operated applications, enhancing its appeal in sectors like telecommunications, industrial control, and automotive systems. Its combination of performance, integration, versatility, and efficiency has secured the MC68340 a reputable position in the annals of embedded systems technology, proving to be a valuable asset for developers and engineers alike.

Motorola MC68340 manual Freescale Semiconductor, Inc AC Timing Specifications

Models: MC68340

Freescale Semiconductor, Inc.

11.7 AC TIMING SPECIFICATIONS (Continued)

25.16 MHz

Num.

Characteristic

Symbol Min Max

Unit

Freescale Semiconductor, Inc...

MC68340 specifications