Topics: Computer, Integrated circuit, Microcontroller Pages: 4 (1287 words) Published: March 24, 2013

As the name implies, Zilog is a set of library files that provides an interface between the user application and this project uses Zilog XP F0822, a part of microcontroller product. The kit used allows the users to be familiarized with the function of this device. The kit consists of 8Kb version of Z8 encore. This hardware is intended for blind person. It is expected to be reasonably used by the blind people with no support. For their safety, this device it completed with the ultrasonic sensor that work perfectly for distance measurement between the blind person and any moving or stationary object. The ultrasonic sensor provides:

* Precise, non-contact distance measurements within a 2 cm to 3 m range * Simple pulse in/pulse out communication
* Burst indicator LED shows measurement in progress
* 20 mA power consumption
* Narrow acceptance angle
* 3-pin header makes it easy to connect using a servo extension cable The main features of Z8 Encore! XP F0822 Series include:
* eZ8TM core CPU
* 8 KB Flash memory with in-circuit system programming (ISCP) capability * 1 KB register RAM
* 5-channel, 10-bit Analog-to-Digital Converter (ADC)
* Full-duplex UART
* I2C interface (Master Mode only)
* Serial Peripheral Interface (SPI)
* Infrared Data Association (IrDA)-compliant infrared encoder/decoder (Endec) * Two 16-bit timers with capture, compare, and PWM capability * Watchdog Timer (WDT) with internal RC oscillator

* Eleven or nineteen I/O pins
* Programmable priority interrupts
* On-Chip Debugger
* Voltage Brownout Protection (VBO)
* Power-On Reset (POR)
* 2.7 V to 3.6 V operating voltage with 5 V-tolerant inputs * Operating temperatures: 20 °C ±10 °C

This device was programmed with certain instructions so it properly works as determined. As mentioned, this project is aimed to serve as a sensory substitution specially for a blind person. While...
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