Num.Characteristic

Freescale Semiconductor, Inc.

11.7AC TIMING SPECIFICATIONS (See notes (a), (b), (c), and (d) corresponding to part operation, GND = 0 Vdc, TA = 0 to 70°C; see numbered notes; see Figures 11-2–11-11)

Freescale Semiconductor, Inc...

6 CLKOUT High to Address, FC, SIZ, RMC Valid

7CLKOUT High to Address, Data, FC, SIZ, RMC High Impedance

8CLKOUT High to Address, FC, SIZ, RMC Invalid

99	CLKOUT Low to AS, DS, CS, IFETCH, IPIPE,
	IACK≈ Asserted
9A2	AS to DS or CS Asserted (Read)

11Address, FC, SIZ, RMC Valid to AS, CS (and DS Read) Asserted

12CLKOUT Low to AS, DS, CS, IFETCH, IPIPE, IACK≈ Negated

13AS, DS, CS, IACK≈ Negated to Address, FC, SIZ Invalid (Address Hold)

14	AS, CS (and DS Read) Width Asserted
14A	DS Width Asserted (Write)
14B	AS, CS, IACK≈ (and DS Read) Width Asserted
	(Fast Termination Cycle)
153	AS, DS, CS Width Negated
16	CLKOUT High to AS, DS, R/ W High Impedance
17	AS, DS, CS Negated to R/W High
18	CLKOUT High to R/W High
20	CLKOUT High to R/W Low
219	R/ W High to AS, CS Asserted
22	R/ W Low to DS Asserted (Write)
23	CLKOUT High to Data-Out Valid
24	Data-Out Valid to Negating Edge of AS, CS,
	(Fast Termination Write)
25	DS, CS, Negated to Data-Out Invalid (Data-Out
	Hold)
26	Data-Out Valid to DS Asserted (Write)
27	Data-In Valid to CLKOUT Low (Data Setup)
27A	Late BERR, HALT, BKPT Asserted to CLKOUT
	Low (Setup Time)

28AS, DS Negated to DSACK≈, BERR, HALT Negated

294 DS, CS Negated to Data-In Invalid (Data-In Hold)

29A4 DS, CS Negated to Data-In High Impedance

			3.3 V or
	3.3 V		5.0 V		5.0 V
	8.39 MHz		16.78 MHz		25.16 MHz
Symbol	Min	Max	Min	Max	Min	Max	Unit
tCHAV	0	60	0	30	0	20	ns
tCHAZx	0	120	0	60	0	40	ns
tCHAZn	0	—	0	—	0	—	ns
tCLSA	3	60	3	30	3	20	ns
tSTSA	–30	30	–15	15	–6	6	ns
tAVSA	30	—	15	—	10	—	ns
tCLSN	3	60	3	30	3	20	ns
tSNAI	30	—	15	—	10	—	ns
tSWA	200	—	100	—	70	—	ns
tSWAW	90	—	45	—	30	—	ns
tSWDW	80	—	40	—	30	—	ns
tSN	80	—	40	—	30	—	ns
tCHSZ	—	120	—	60	—	40	ns
tSNRN	30	—	15	—	10	—	ns
tCHRH	0	60	0	30	0	20	ns
tCHRL	0	60	0	30	0	20	ns
tRAAA	30	—	15	—	10	—	ns
tRASA	140	—	70	—	47	—	ns
tCHDO	—	60	—	30	—	20	ns
tDVASN	30	—	15	—	10	—	ns
tSNDOI	30	—	15	—	10	—	ns
tDVSA	30	—	15	—	10	—	ns
tDICL	10	—	5	—	5	—	ns
tBELCL	40	—	20	—	10	—	ns
tSNDN	0	160	0	80	0	50	ns
tSNDI	0	—	0	—	0	—	ns
tSHDI	—	120	—	60	—	40	ns

11-8MC68340 USER’S MANUALMOTOROLA

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 Num.Characteristic, MHz 16.78 MHz 25.16 MHz Symbol Min Max Unit

Models: MC68340

Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc...

Num.Characteristic

8.39 MHz

16.78 MHz

25.16 MHz

Symbol

Min

Max

Unit

MC68340 specifications