ZL7AVRA

Description

ZL7AVRA is a DIP module with ATmega128A microcontroller with 16MHz frequency osscillator. Module is ideal for set ZL8AVR. On board is placed a DS1813 reset system of microcontrollerand automatic switching separator of line ISP (MC14053) for programming.

Basic features and parameters

• Microcontroller ATmega128A from Atmel
• Program memory (ISP): 128kB
• Data memory EEPROM: 4kB
• Data memory SRAM: 4kB
• Clock frequency: 16MHz
• Embedded line separator ISP (with automatic controll)
• Kanda ISP connector for programming (compatibile with i.a. KamPROG)
• Embedded reset signal generator
• Possibility of using external reference voltage source for A/C converter
• I/O lines: 53
• Power supply voltage: 4.5...5.5V/100mA (max.)

Standard equipment

Code	Description
ZL7AVRA	Assembled and launched module

Electrical schematic

Output description

Output description of module ZL7AVRA

Programming

For programming of ZL7AVRA can be used any of programmer with ISP connector with support for ATmega128A. Recommended programmer for ZL7AVRA is KamPROG.

ISP connector output description (top view)

ADC reference voltage

JP2 jumper allows to choose a reference voltage for analog-to-digital converter of microcontroller. By position1-2 of jumper, on VREF line of microcontroller is 5V and by position 2-3 of jumper (Ext) reference voltage is getting form VREF line of module.

External links

• Atmel ATmega128A microcontroller datasheet
• Library PCB i SCH Protel 99/DXP/2004 format