Freescale Semiconductor EETX4K, Block Guide warranty Resets, Interrupts, Eeprom Reset Sequence

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Freescale Semiconductor, Inc.

Freescale Semiconductor, Inc.

Block Guide — S12EETX4KV0 V00.04

BDM status register. This BDM action will cause the MCU to override the Flash security state and the MCU will be unsecured. Once the MCU is unsecured, BDM commands will be enabled and the Flash security byte may be programmed to the unsecure state.

4.6 Resets

4.6.1 EEPROM Reset Sequence

On each reset, the EEPROM module executes a reset sequence to hold CPU activity while loading the EPROT register from the EEPROM memory according to Table 3-1.

4.6.2 Reset While EEPROM Command Active

If a reset occurs while any EEPROM command is in progress, that command will be immediately aborted. The state of a word being programmed or the sector / block being erased is not guaranteed.

4.7 Interrupts

The EEPROM module can generate an interrupt when all EEPROM command operations have completed, when the EEPROM address, data and command buffers are empty.

Table 4-2 EEPROM Interrupt Sources

Interrupt Source

Interrupt Flag

Local Enable

Global (CCR)

Mask

 

 

 

 

 

 

 

EEPROM Address, Data and

CBEIF

CBEIE

I-Bit

Command Buffers empty

(ESTAT register)

(ECNFG register)

 

 

 

 

 

All EEPROM commands completed

CCIF

CCIE

I-Bit

(ESTAT register)

(ECNFG register)

 

 

 

 

 

 

Vector addresses and their relative interrupt priority are determined at the MCU level.

4.7.1 Description of EEPROM Interrupt Operation

The logic used for generating interrupts is shown in Figure 4-8.

The EEPROM module uses the CBEIF and CCIF flags in combination with the CBIE and CCIE enable bits to generate the EEPROM command interrupt request.

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Contents Original Release Date 7 JUL Revised 30 OCT Motorola, Inc Freescale Semiconductor, IncRevision History Table of Contents Freescale Semiconductor, Inc List of Figures Freescale Semiconductor, Inc List of Tables Freescale Semiconductor, Inc Freescale Semiconductor, Inc Freescale Semiconductor, Inc Introduction FeaturesOverview Modes of OperationInterface Block DiagramClock DividerExternal Signal Description Eeprom Configuration Field Memory Map and RegistersModule Memory Map Eeprom Memory Map Eeprom Register Map Address Register Name Normal Mode Offset AccessEclkdiv Eeprom Clock Divider Register Register DescriptionsRESERVED2 Ecnfg Eeprom Configuration RegisterEeprom Protection Register Eprot Eprot Eeprom Protection RegisterEeprom Protection Address Range Estat Eeprom Status RegisterEcmd Eeprom Command Register Valid Eeprom Command List Eeprom Command Register EcmdEdata Eeprom Data Registers Eaddr Eeprom Address Registers13 Eeprom Data Low Register Edatalo Writing the Eclkdiv Register Eeprom Command OperationsFunctional Description 200 -182 ⁄ 200 × 100 = 9% Determination Procedure for PRDIV8 and Ediv Bits Eeprom Command Description Command Write SequenceEeprom Commands Sector Erase Verify CommandExample Erase Verify Command Flow Program Command Freescale Semiconductor, Inc Example Program Command Flow Sector Erase Command Freescale Semiconductor, Inc Example Sector Erase Command Flow Mass Erase Command Example Mass Erase Command Flow Sector Erase Abort Command Freescale Semiconductor, Inc Ccif Illegal Eeprom Operations Example Sector Modify Command Flow3.5 Stop Mode Wait ModeBackground Debug Mode Unsecuring the MCU in Special Single Chip Mode via the BDMEeprom Reset Sequence ResetsReset While Eeprom Command Active InterruptsEeprom Interrupt Implementation Index Freescale Semiconductor, Inc Block Guide End Sheet Final Pages

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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