Pulse-Width Modulator for Motor Control (PWMMC)

12.9.9 Fault Status Register

The fault status register (FSR) is a read-only register that indicates the current fault status.

Address:

Read:

Write:

Reset:

$0023

 

 

 

 

 

 

 

 

Bit 7

6

5

4

 

3

2

1

Bit 0

 

 

 

 

 

 

 

 

 

FPIN4

FFLAG4

FPIN3

FFLAG3

 

FPIN2

FFLAG2

FPIN1

FFLAG1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

U

0

U

0

 

U

0

U

0

 

= Unimplemented

U = Unaffected

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 12-44. Fault Status Register (FSR)

FPIN4 — State of Fault Pin 4 Bit

This read-only bit allows the user to read the current state of fault pin 4.

1 = Fault pin 4 is at logic 1.

0 = Fault pin 4 is at logic 0.

FFLAG4 — Fault Event Flag 4

The FFLAG4 event bit is set within two CPU cycles after a rising edge on fault pin 4. To clear the FFLAG4 bit, the user must write a 1 to the FTACK4 bit in the fault acknowledge register.

1 = A fault has occurred on fault pin 4.

0 = No new fault on fault pin 4

FPIN3 — State of Fault Pin 3 Bit

This read-only bit allows the user to read the current state of fault pin 3.

1 = Fault pin 3 is at logic 1.

0 = Fault pin 3 is at logic 0.

FFLAG3 — Fault Event Flag 3

The FFLAG3 event bit is set within two CPU cycles after a rising edge on fault pin 3. To clear the FFLAG3 bit, the user must write a 1 to the FTACK3 bit in the fault acknowledge register.

1 = A fault has occurred on fault pin 3.

0 = No new fault on fault pin 3.

FPIN2 — State of Fault Pin 2 Bit

This read-only bit allows the user to read the current state of fault pin 2. 1 = Fault pin 2 is at logic 1.

0 = Fault pin 2 is at logic 0.

FFLAG2 — Fault Event Flag 2

The FFLAG2 event bit is set within two CPU cycles after a rising edge on fault pin 2. To clear the FFLAG2 bit, the user must write a 1 to the FTACK2 bit in the fault acknowledge register.

1 = A fault has occurred on fault pin 2.

0 = No new fault on fault pin 2

FPIN1 — State of Fault Pin 1 Bit

This read-only bit allows the user to read the current state of fault pin 1. 1 = Fault pin 1 is at logic 1.

0 = Fault pin 1 is at logic 0.

MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1

152

Freescale Semiconductor

Page 151 Page 153
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Freescale Semiconductor MC68HC908MR32, MC68HC908MR16 manual Fault Status Register
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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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