Memory

Addr.

Register Name

Bit 7

6

5

4

3

2

1

Bit 0

 

PWM 5 Value Register High

Read:

 

 

$0032

(PMVAL5H)

Write:

 

See page 145.

Reset:

 

 

 

PWM 5 Value Register Low

Read:

 

 

$0033

(PVAL5L)

Write:

 

See page 145.

Reset:

 

 

 

PWM 6 Value Register High

Read:

 

 

$0034

(PVAL6H)

Write:

 

See page 145.

Reset:

 

 

 

PWM 6 Value Register Low

Read:

 

 

$0035

(PMVAL6L)

Write:

 

See page 145.

Reset:

 

 

 

Dead-Time Write-Once

Read:

 

 

$0036

Register (DEADTM)

Write:

 

See page 150.

Reset:

 

 

 

PWM Disable Mapping

Read:

 

 

$0037

Write-Once Register (DISMAP)

Write:

 

See page 137.

Reset:

 

 

 

SCI Control Register 1

Read:

 

 

$0038

(SCC1)

Write:

 

See page 169.

Reset:

 

 

 

SCI Control Register 2

Read:

 

 

$0039

(SCC2)

Write:

 

See page 171.

Reset:

 

 

 

SCI Control Register 3

Read:

 

 

$003A

(SCC3)

Write:

 

See page 173.

Reset:

 

 

 

SCI Status Register 1

Read:

 

 

$003B

(SCS1)

Write:

 

See page 174.

Reset:

 

 

 

SCI Status Register 2

Read:

 

 

$003C

(SCS2)

Write:

 

See page 176.

Reset:

 

 

 

SCI Data Register

Read:

 

 

$003D

(SCDR)

Write:

 

See page 177.

Reset:

 

 

U = Unaffected X = Indeterminate

Bit 15

Bit 14

 

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

 

 

 

 

 

 

 

 

 

0

0

 

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

Bit 7

Bit 6

 

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

 

 

 

 

 

 

 

 

 

0

0

 

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

Bit 15

Bit 14

 

Bit 13

Bit 12

Bit 11

Bit 10

Bit 9

Bit 8

 

 

 

 

 

 

 

 

 

0

0

 

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

Bit 7

Bit 6

 

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

 

 

 

 

 

 

 

 

 

0

0

 

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

Bit 7

Bit 6

 

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

 

 

 

 

 

 

 

 

 

1

1

 

1

1

1

1

1

1

 

 

 

 

 

 

 

 

 

Bit 7

Bit 6

 

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

 

 

 

 

 

 

 

 

 

1

1

 

1

1

1

1

1

1

 

 

 

 

 

 

 

 

 

LOOPS

ENSCI

 

TXINV

M

WAKE

ILTY

PEN

PTY

 

 

 

 

 

 

 

 

 

0

0

 

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

SCTIE

TCIE

 

SCRIE

ILIE

TE

RE

RWU

SBK

 

 

 

 

 

 

 

 

 

0

0

 

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

R8

T8

 

0

0

ORIE

NEIE

FEIE

PEIE

 

 

 

 

R

 

R

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U

U

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

SCTE

TC

 

SCRF

IDLE

OR

NF

FE

PE

 

 

 

 

 

 

 

 

 

R

R

 

R

R

R

R

R

R

 

 

 

 

 

 

 

 

 

1

1

 

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

0

0

 

0

0

0

0

BKF

RPF

 

 

 

 

 

 

 

 

 

R

R

 

R

R

R

R

R

R

 

 

 

 

 

 

 

 

 

0

0

 

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

R7

R6

 

R5

R4

R3

R2

R1

R0

 

 

 

 

 

 

 

 

 

T7

T6

 

T5

T4

T3

T2

T1

T0

 

 

 

 

 

 

 

 

 

 

 

 

 

Unaffected by reset

 

 

 

 

 

 

 

 

 

 

 

 

R

= Reserved

 

Bold

= Buffered

 

= Unimplemented

 

 

 

 

 

 

 

 

 

Figure 2-2. Control, Status, and Data Registers Summary (Sheet 5 of 8)

MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1

32

Freescale Semiconductor

Page 32
Image 32
Freescale Semiconductor MC68HC908MR32 Control, Status, and Data Registers Summary Sheet 5, Memory Addr Register Name Bit

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.