Features

 

8

 

CPU BUS

 

 

 

 

 

 

PWM CHANNELS 1 AND 2

 

 

PWM1 PIN

 

 

 

PWM2 PIN

 

 

 

 

CONTROL LOGIC BLOCK

PWM CHANNELS 3 AND 4

OUTPUT CONTROL

FAULT PROTECTION

PWM3 PIN

PWM4 PIN

 

PWM CHANNELS 5 AND 6

PWM5 PIN

PWM6 PIN

 

 

 

 

 

 

 

4

FAULT

 

12

 

INTERRUPT

 

 

 

 

 

 

 

PINS

 

TIMEBASE

 

 

 

 

 

3

COIL CURRENT

 

 

 

POLARITY PINS

Figure 12-2. PWM Module Block Diagram

Addr.

Register Name

 

Bit 7

6

 

5

4

3

2

1

Bit 0

 

 

 

 

 

 

 

 

 

 

 

 

 

PWM Control Register 1

Read:

DISX

DISY

 

PWMINT

PWMF

ISENS1

ISENS0

LDOK

PWMEN

 

 

 

$0020

(PCTL1)

Write:

 

 

 

 

 

 

 

 

 

 

See page 146.

 

 

 

 

 

 

 

 

 

 

 

Reset:

0

0

 

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PWM Control Register 2

Read:

LDFQ1

LDFQ0

 

0

IPOL1

IPOL2

IPOL3

PRSC1

PRSC0

 

 

 

 

$0021

(PCTL2)

Write:

 

 

 

 

 

 

 

 

 

 

See page 148.

 

 

 

 

 

 

 

 

 

 

 

Reset:

0

0

 

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fault Control Register

Read:

FINT4

FMODE4

 

FINT3

FMODE3

FINT2

FMODE2

FINT1

FMODE1

 

 

 

$0022

(FCR)

Write:

 

 

 

 

 

 

 

 

 

 

See page 150.

 

 

 

 

 

 

 

 

 

 

 

Reset:

0

0

 

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fault Status Register

Read:

FPIN4

FFLAG4

 

FPIN3

FFLAG3

FPIN2

FFLAG2

FPIN1

FFLAG1

 

 

 

 

 

 

 

 

 

 

 

$0023

(FSR)

Write:

 

 

 

 

 

 

 

 

 

 

See page 152.

 

 

 

 

 

 

 

 

 

 

 

Reset:

U

0

 

U

0

U

0

U

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fault Acknowledge Register

Read:

0

0

 

DT6

DT5

DT4

DT3

DT2

DT1

 

 

 

 

 

 

 

 

 

 

 

$0024

(FTACK)

Write:

 

FTACK4

 

 

FTACK3

 

FTACK2

 

FTACK1

 

See page 153.

 

 

 

 

 

 

 

 

 

 

 

Reset:

0

0

 

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

= Reserved

 

Bold

= Buffered

X = Indeterminate

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 12-3. Register Summary (Sheet 1 of 3)

MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1

Freescale Semiconductor

117

Page 116 Page 118
Page 117
Image 117
Freescale Semiconductor MC68HC908MR16, MC68HC908MR32 manual PWM Module Block Diagram, Features
Page 116 Page 118

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.
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