Freescale Semiconductor MC68HC908MR16, MC68HC908MR32 guide

						I/O Registers
		Table 13-7. SCI Baud Rate Selection Examples

SCP1:SCP0	Prescaler		SCR2:SCR1:SCR0	Baud Rate	Baud Rate	Baud Rate
SCP1:SCP0	Divisor (PD)		SCR2:SCR1:SCR0	Divisor (BD)	(fOP = 7.3728 MHz)	(fOP = 4.9152 MHz)
	Divisor (PD)			Divisor (BD)	(fOP = 7.3728 MHz)	(fOP = 4.9152 MHz)
00	1		000	1	115,200	76,800

00	1		001	2	57,600	38,400

00	1		010	4	28,800	19,200

00	1		011	8	14,400	9600

00	1		100	16	7200	4800

00	1		101	32	3600	2400

00	1		110	64	1800	1200

00	1		111	128	900	600

01	3		000	1	38,400	25,600

01	3		001	2	19,200	12,800

01	3		010	4	9600	6400

01	3		011	8	4800	3200

01	3		100	16	2400	1600

01	3		101	32	1200	800

01	3		110	64	600	400

01	3		111	128	300	200

10	4		000	1	28,800	19,200

10	4		001	2	14,400	9600

10	4		010	4	7200	4800

10	4		011	8	3600	2400

10	4		100	16	1800	1200

10	4		101	32	900	600

10	4		110	64	450	300

10	4		111	128	225	150

11	13		000	1	8861.5	5907.7

11	13		001	2	4430.7	2953.8

11	13		010	4	2215.4	1476.9

11	13		011	8	1107.7	738.5

11	13		100	16	553.8	369.2

11	13		101	32	276.9	184.6

11	13		110	64	138.5	92.3

11	13		111	128	69.2	46.2

MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1

Freescale Semiconductor

179

MC68HC908MR16, MC68HC908MR32 specifications

Freescale Semiconductor's MC68HC908MR32 and MC68HC908MR16 microcontrollers are part of the popular HC08 family, designed primarily for embedded applications. These microcontrollers are particularly favored in automotive, industrial, and consumer product sectors due to their reliability and versatility.

One of the standout features of the MC68HC908MR series is its CMOS technology, which enhances performance while minimizing power consumption. This makes these microcontrollers suitable for battery-operated devices. They operate at a maximum clock frequency of 2 MHz and offer a 16-bit architecture, providing a solid balance between processing power and efficiency.

The MC68HC908MR32 variant is equipped with 32KB of flash memory, which allows for the storage of complex programs and extensive data handling. In contrast, the MC68HC908MR16 features 16KB of flash memory, making it ideal for simpler applications. Both microcontrollers also come with 1KB of RAM, enabling efficient data processing and real-time operations.

Another significant characteristic of these microcontrollers is their integrated peripherals. They come with multiple input/output (I/O) pins, which allow for connectivity with various sensors and actuators. The built-in timer systems offer precise timing control for automotive and industrial applications, while the Analog-to-Digital Converter (ADC) provides essential conversion capabilities for various analog signals.

For communication purposes, the MC68HC908MR series includes a serial communication interface, enabling easy integration with other devices and systems. This versatility facilitates the development of complex systems that require interaction with external components.

Security is another crucial aspect of these microcontrollers. They have built-in fail-safe mechanisms to ensure reliable operation under various conditions, making them suitable for critical systems. Additionally, their robust architecture helps to safeguard against potential disruptions or attacks.

In summary, Freescale Semiconductor's MC68HC908MR32 and MC68HC908MR16 microcontrollers are key players in the embedded systems landscape. Their blend of power efficiency, integrated features, and scalability ensures they remain relevant for a wide array of applications, making them a favored choice among engineers and developers looking for dependable solutions in a competitive market.

Freescale Semiconductor MC68HC908MR16, MC68HC908MR32 manual SCI Baud Rate Selection Examples

Models: MC68HC908MR16 MC68HC908MR32

Table 13-7. SCI Baud Rate Selection Examples

SCP1:SCP0

Baud Rate

Divisor (PD)

Divisor (BD)

(fOP = 7.3728 MHz)

(fOP = 4.9152 MHz)

MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1

MC68HC908MR16, MC68HC908MR32 specifications