Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.

Block Guide — S12EETX4KV0 V00.04

3.3.5 EPROT — EEPROM Protection Register

The EPROT register defines which EEPROM sectors are protected against program or erase operations.

Address Offset: $_04

 

7

6

5

4

3

2

1

0

R

EPOPEN

RNV6

RNV5

RNV4

EPDIS

EPS2

EPS1

EPS0

W

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reset:

F

F

F

F

F

F

F

F

= Unimplemented or Reserved

Figure 3-6 EEPROM Protection Register (EPROT)

All bits in the EPROT register are readable and writable except for RNV[6:4] which are only readable. The EPOPEN and EPDIS bits can only be written to the protected state. The EPS bits can be written anytime until bit EPDIS is cleared. If the EPOPEN bit is cleared, the state of the EPDIS and EPS bits is irrelevant.

During the reset sequence, the EPROT register is loaded from the EEPROM Protection byte at address offset $_FFD (see Table 3-1 EEPROM Configuration Field). To change the EEPROM protection that will be loaded during the reset sequence, the EEPROM memory must be unprotected, then the EEPROM Protection byte must be reprogrammed. Trying to alter data in any protected area in the EEPROM memory will result in a protection violation error and the PVIOL flag will be set in the ESTAT register. The mass erase of an EEPROM block is possible only when protection is fully disabled by setting the EPOPEN and EPDIS bits.

EPOPEN — Opens the EEPROM for program or erase.

1 = The EEPROM sectors not protected are enabled for program or erase. 0 = The entire EEPROM memory is protected from program and erase.

RNV[6:4] — Reserved Non-Volatile Bits.

The RNV[6:4] bits should remain in the erased state “1” for future enhancements.

EPDIS — EEPROM Protection address range Disable.

The EPDIS bit determines whether there is a protected area in a specific region of the EEPROM memory ending with address offset $_FFF.

1 = Protection disabled.

0 = Protection enabled.

EPS[2:0] — EEPROM Protection Address Size.

The EPS[2:0] bits determine the size of the protected area as shown inTable 3-3. The EPS bits can only be written to while the EPDIS bit is set.

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Freescale Semiconductor EETX4K, Block Guide warranty Eprot Eeprom Protection Register, Eeprom Protection Register Eprot
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Block Guide, EETX4K specifications

Freescale Semiconductor, a global leader in embedded processing solutions, introduced the EETX4K, a revolutionary embedded processor designed to meet the growing demands of industrial applications. The EETX4K processor is specifically engineered for high-performance, low-power systems, offering an ideal balance between performance and power consumption.

One of the main features of the EETX4K is its high level of integration. This processor houses a powerful ARM Cortex-A9 core, which allows for efficient processing capabilities while maintaining a compact architecture. This ensures that the EETX4K can operate seamlessly in various applications, including automotive systems, industrial automation, and consumer electronics.

A standout characteristic of the EETX4K is its extensive connectivity options. It supports a range of communication interfaces, such as Ethernet, SPI, I2C, UART, and USB, enabling flexible integration into various networked environments. The processor is equipped with hardware Ethernet support for Real-Time Ethernet protocols, ensuring reliable and deterministic data transfer, which is crucial for time-sensitive applications.

In addition to its connectivity features, the EETX4K supports advanced graphical processing capabilities. With integrated 3D Graphics and Video Processing Units, it can handle demanding multimedia applications, making it suitable for user interfaces in industrial machines and smart devices. This makes the EETX4K an optimal choice for applications requiring rich graphics and advanced visualization.

Another important technological aspect of the EETX4K is its robust security features. It is designed with security in mind, incorporating hardware support for secure boot and secure data storage. This ensures that sensitive information is protected against potential threats and vulnerabilities, a critical requirement in today's interconnected world.

Furthermore, the EETX4K is optimized for energy efficiency, allowing for extended operational periods in battery-powered or energy-constrained environments. With its low thermal design power (TDP), it minimizes heat generation, ensuring that systems remain reliable and efficient under various operating conditions.

In summary, the Freescale Semiconductor EETX4K is a versatile embedded processor that combines high performance, comprehensive connectivity, advanced graphics capabilities, robust security features, and energy efficiency. These attributes make it an ideal solution for a wide range of applications, paving the way for innovation across multiple industries.
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