Diamond Systems PR-Z16-LC-ST, Low-Power PC/104 CPU Board With ZFx86 Processor Watchdog Timer

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6.4Watchdog Timer

Prometheus-LC contains a watchdog timer circuit consisting of two programmable timers, WD1 and WD2, cascaded together. The input to the circuit is WDI, and the output is WDO. Both signals appear on I/O connector WDI may be triggered in hardware or in software. A special “early” version of WDO may be output on the WDO pin. When this signal is connected to WDI, the watchdog circuit will be retriggered automatically. A block diagram is provided here:

The duration of each timer is user-programmable. When WD1 is triggered, it begins to count down. When it reaches zero, it triggers WD2 and may also generate a user-selectable combination of these events:

♦Non-maskable interrupt (NMI)

♦System controller interrupt (SCI)

♦System Management interrupt (SMI)

♦Hardware reset

WD2 then begins to count down. When WD2 counter reaches zero, it will unconditionally cause a hardware reset. The WD2 timer is provided to give external circuits time to respond to the WDO event before the hardware reset occurs.

The watchdog timer circuit is programmed via I/O registers 0CH through 12H. Detailed programming information is in the ZFx86 Training Manual included in the Documents folder of the Diamond Systems CD. The watchdog timer is supported in the DSC Universal Driver software version 5.1 and later.

Prometheus-LC CPU User Manual V1.0

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Contents PROMETHEUS-LC Table of Contents 12.3 12.112.2 12.4Description Features System FeaturesProcessor Section PROMETHEUS-LC Board Drawing J4 Not presentCable a Main I/O Connector J3O Headers Cable BConnector Part Numbers COM1 COM4Input Power J11 Output Power J12 USB J5Auxiliary Serial Port Connector J15 Watchdog/Failsafe Features J6Floppy Drive J7 IDE Drive J8PC/104 Bus Connectors J2 PC/104 16-bit bus connector J1 PC/104 8-bit bus connectorJumper Configuration System Configuration J10Watchdog Timer & System Recovery J6 System Features System ResourcesCPU Chip Selects Console Redirection to a Serial Port Watchdog Timer System Reset Failsafe Mode / Bios RecoveryBackup Battery Flash MemoryBios Features Bios SettingsBios Download / Recovery GroundInitial Setup DISK-ON-BOARD Flash File StorageOperating System Formatting Known Limitations Life Cycle Management and CalculationsSystem I/O Serial PortsParallel Port Installing an OS From a Floppy Drive onto a Flashdisk Module Installing an OS from a Hard Disk onto a Flashdisk Module Power Supply ConfigurationUsing the Flashdisk with Another IDE Drive Flashdisk Module12. I/O Panel Board DescriptionLocation Type Description Panel Board I/O ConnectorsPanel Board Top Side / External Use I/O Connectors Panel Board HardwarePanel Board Power Connections J12 pinout to/from DC/DC power supplyJ3 Pinout J9 Pinout Installation J5 USBFlash Disk Programmer Board 14.I/O Cables Photo No Cable No DescriptionCable Kit C-PRZ-KIT VGA Accessory Board PL5 pin no PL5 Signal J25 pin no J25 SignalPL5 pin no DB15F pin no Signal Connector on Board Manufacturer Manufacturer Part No Mounting PROMETHEUS-LC on a BaseboardWebsite information Page 17.PC/104 Mechanical Drawing

Low-Power PC/104 CPU Board With ZFx86 Processor, PR-Z16-LC-ST specifications

The Diamond Systems Low-Power PC/104 CPU Board featuring the ZFx86 Processor, specifically the PR-Z16-LC-ST model, represents a significant advancement in embedded computing technology. This CPU board is designed to deliver robust performance while maintaining low power consumption, making it ideal for a wide array of industrial and embedded applications.

One of the standout features of the PR-Z16-LC-ST board is its ZFx86 Processor. This processor family is built with a focus on energy efficiency and low thermal output, which is crucial for applications where heat dissipation can be a challenge. The ZFx86 provides an excellent balance between processing power and energy consumption, featuring a 16-bit instruction set that facilitates compatibility with many existing software applications.

This board supports a variety of operating environments, including DOS, Linux, and Windows, ensuring versatility for developers. Its design includes a compact PC/104 form factor, which allows for streamlined stacking of multiple boards. This modularity is beneficial for system integrators looking to create customized solutions with limited space.

In terms of connectivity, the PR-Z16-LC-ST is equipped with a wide range of I/O ports. This includes digital and analog inputs and outputs, serial communication ports, and support for various peripheral devices. Such features make it a suitable choice for tasks such as data acquisition, control systems, and automation processes.

Additionally, the Diamond Systems board is designed with an onboard memory expansion capability, allowing users to enhance performance based on specific application needs. The support for both DRAM and flash memory options provides flexibility in memory configuration.

The board also emphasizes reliability and longevity, with rugged construction suitable for harsh environments. This durability is essential for applications in sectors such as transportation, telecommunications, and factory automation, where systems must withstand extreme conditions.

In summary, the Diamond Systems PR-Z16-LC-ST Low-Power PC/104 CPU Board with ZFx86 Processor combines efficiency with a robust feature set. Its low power consumption, modular design, and extensive connectivity options make it an attractive solution for developers in the embedded computing space seeking reliable performance in compact configurations.
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