Watchdog Timer Registers

Address of register (2E)

Attribute

 

 

 

 

Read/Write

Value (2F) and

 

 

description

 

 

 

 

87 (hex)

-----

Write this address to I/O

 

 

address port 2E (hex) twice

 

 

to unlock theW83627HF

 

 

 

07 (hex)

write

Write 08 (hex) to select reg-

 

 

ister of watchdog timer.

 

 

 

30 (hex)

write

Write 01 (hex) to enable

 

 

the function of the watch-

 

 

dog timer. Disabled is set

 

 

as default.

 

 

 

F5 (hex)

write

Set seconds or minutes as

 

 

units for the timer.

 

 

 

Write 0 to bit 3: set sec-

 

 

ond as counting unit.

 

 

[default]

 

 

 

 

 

Write 1 to bit 3: set

 

 

minute as counting unit

 

 

 

 

 

F6 (hex)

write

0: stop timer [default]

 

 

01~FF (hex): The amount

 

 

of the count, in seconds or

 

 

minutes, depends on the

 

 

value set in register F5

 

 

(hex). This number decides

 

 

how long the watchdog

 

 

timer waits for strobe

 

 

before generating an inter-

 

 

rupt or reset signal. Writing

 

 

a new value to this register

 

 

can reset the timer to count

 

 

with the new value.

 

 

 

PCA-6187 User’s Manual

92

Page 104
Image 104
Advantech PCA-6187 user manual Address of register 2E Attribute

PCA-6187 specifications

The Advantech PCA-6187 is a high-performance industrial PC/104-Plus single-board computer designed to meet the rigorous demands of embedded applications. This robust and versatile board is particularly well-suited for applications in industrial automation, transportation, and telecommunications, where reliability and performance are paramount.

One of the main features of the PCA-6187 is its support for the Intel Pentium M and Celeron M processors, providing a potent combination of processing power and energy efficiency. This architecture allows for the execution of complex computation tasks while maintaining a low thermal profile, making it ideal for environments with limited cooling options. Furthermore, the PCA-6187 offers a wide operating temperature range, from -40°C to +85°C, ensuring reliable functionality in extreme conditions.

The board incorporates advanced memory capabilities, supporting up to 1GB of SDRAM with a 64-bit data bus. A flash disk interface is also available for high-speed storage solutions, making it easier to manage large amounts of data typical in industrial applications. Additionally, the PCA-6187 features several I/O options, including multiple COM ports, USB interfaces, and parallel ports, allowing for extensive connectivity options for various peripherals and devices.

One of the standout characteristics of the PCA-6187 is its PC/104-Plus form factor, which allows for a modular architecture. This design enables developers to easily expand the capabilities of the board by stacking additional PC/104 modules, facilitating the customization of hardware solutions tailored to specific application requirements. The PCA-6187 also includes watchdog timers to ensure system reliability and prevent system lock-ups, which is critical for mission-critical applications.

Furthermore, the PCA-6187 supports various operating systems, including Windows and Linux, providing developers with flexibility in software development. The integration of rich development resources and tools enhances the speed and efficiency of application deployment in diverse environments.

In conclusion, the Advantech PCA-6187 stands out as a powerful and flexible industrial single-board computer, perfectly suited for a wide array of embedded computing tasks. With its robust design, advanced processing capabilities, and extensive connectivity options, it provides an ideal platform for developers aiming to create reliable systems in demanding operational conditions. The PCA-6187 truly embodies the essence of industrial computing, balancing power and efficiency for a wide range of applications.