grifo® Mini Module Atmel ATmega 8L

It Doesn't Need Programmer.

Just the Serial Line.

The picture shows GMM AM08 that has the dimension of DIP28 integrated circuit. The GMM AM08 is equipped with Atmel ATmega8L microcontroller.

GMM AM08 English Tech. Manual PDF format.

Ver. 5.10 - Rel. 21 February 2006.

GMB HR84 + GMM AM08 English Tech. Manual PDF format.

Ver. 5.00 - Rel. 14 December 2004.

GMM AM08 possible applications

  • Integrated system that can be used directly on the board developed by the user a macro component.
  • Smart intelligent nodes with local functionalities as PID algorithms for controlling temperatures, motors, valves, etc.
  • Teleacquisition and telecontrol on medium and low distances.
  • Home automation: lights turning ON/OFF, heating and cooling systems control, supervision of electric devices, security and acces control systems.
  • Car automation: lights turning ON/OFF, heating and cooling systems control, supervision of electric devices, anti-teft and acces control systems, functionality checks.
  • Didactics: GMM AM08 offers a very low cost to learn AVR Core, we have many starter kits options. For this purpose it is likewise interesting the GMM TST3 support card.
  • Whenever there is a short time to market: the user can see a prototype or even a ready product in one week.
  • Decentralized systems as robots, automation of production line machines, big factory automations.


  • Standard container with 28 pin male socket, dual in line, 100 mils pitch, 600 mils width.
  • Very small dimension: 20,7 x 38,7 x 12,8 mm.
  • Weight: 6,8 g.
  • 4 layers printed circuit to obtain best noisy resistance and best EMI performance.
  • No external programmer is needed as GMM AM08 is a grifo® ISP (In System Programming) Mini Module. FLASH of Micro is Programmable and Erasable by using serial line only.
  • Single power supply required +5Vdc 18mA or +3Vdc to +5Vdc(the current consumption can change according with module connections).
  • Availability of power saving setting as idle mode and power down mode.
  • Atmel ATmega8L microcontroller (AVR code compatibile) with 7,3728 MHz crystal.
  • 8K FLASH for code, 1K RAM for data, 0,5K EEPROM for data.
  • 8 A/D converter channels with 10 bits resolution, 20 µsec conversion time.
  • A/D reference voltage available on connector.
  • 2 Comparatore
  • I2C BUS
  • 3 Timers Counters up to 16 bits
  • PCA channels up to 16 bits with 3 PWM, compare, capture, etc. functionality.
  • Watch Dog section that protect the controlled system in any operating condition.
  • 23 digital I/O lines available on connector. Some of these lines have multiple functions.
  • Hardware serial line with programmable Baud Rate up to 115200 Baud, RS 232 buffered or at TTL level.
  • Transceiver MAX3222E, for RS 232 serial line, with ESD protection up to ±15KV.
  • 4 configuration dip switches.
  • 1 status LED that shows the RUN or DEBUG selection or managed by software through digital I/O line.
  • Internal FLASH and EEPROM can be managed through In System Programming, or when the module is already mounted, by using the serial communication line.
  • Freeware software for PC, that supports the ISP programmation to dowload the generated code, inside on board FLASH.
  • Wide range of development tools as: Assembler (MCA-AVR); C compiler (ImmageCRAFT ICC-AVR, DDS Micro CAVR); BASIC compiler (BASCOM AVR); etc.
  • Long list of demo programs and use examples supplied under source form, duly remarked, for the available development tools.

The picture shows the test card hat mount a grifo® Mini Module type GMM AM08


The picture shows grifo® Mini BLOCK GMB-HR84 that mount a grifo® Mini Module type GMM AM08.


GMM TST2 witch mounted a grifo® Mini Module type GMM AM08 connected to an Atmel programmer type AVR ISP.

The Boot Loader program for grifo® Mini Module GMM AM08 type, allows to program the Mini Module through RS232 serial line only.
DOWNLOAD the Program (Ver. 1.21 - 400 KByte).


 A C C E S S O R I E S


GMB- Housing, 8 Opto-In, 4 Relay

Housing Mini BLOCK Module witch 8 Opto-In and 4 Relay Outputs; Serial Line RS232 or TTL, RS422/485, Current Loop, CAN; Power Supply.

GAB H844

GAB- Housing, 8 Alalog-In, 4 Opto-In, 4 Relay

Housing Analog BLOCK Module witch 8 Analog-In ,4 Opto-In, 4 Relay Outputs; Serial Line RS232 or TTL, RS422/485, Current Loop;1 I2C BUS line, 1 Serial Line USB or CAN; Power Supply.



Low-Cost ATMEL ISP Programmer for Micros AVR.

USB Interface.



Connector KIT Set, 4 pins

4 Female pins + AMP plastic housing for GMB_HR84, etc..


 AMP8 Cable

AMP Cable Connector, 8 pins

1 m cable with 8 pins female AMP connector for QTP_03, etc..

EL 12

The EL 12 module is a complete, low cost, power supply with extremely reduced dimension, that can be used in conjunction with grifo® cards as SDI 02, QTP 12, QTP 16Big, QTP 16, QTP 22, QTP 24, QTP G28, etc.


Low-Cost ATMEL ISP Programmer for Micros AVR.

USB Interface.


W95/W95/NT AVR-BASIC Compiler

BASCOM-AVR is a Windows BASIC COMPILER for the AVR family. It is designed to run on W95/W98/NT

wpe1.jpg (4608 bytes)


ANSI C Compiler for AVR

ICC-AVR is Modern fast C Compiler with full support for the ANSI C language. NOT a micro-C or extended K&R C, but a robust ANSI C front end written from the ground up, which has been in use for over 10 years



Page up-dated at September 06, 2011

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