grifo® Mini Module Atmel T89C51AC2

GMM AC2 English Tech. Manual PDF format.

Ver. 5.00 - Rel. 27 September 2004.

GMB HR168 + GMM AC2 English Tech. Manual PDF format.

Ver. 5.00 - Rel. 09 July 2004.

The picture shows GMM AC2 that has the dimension of DIP40 integrated circuit. The GMM AC2 is equipped with Atmel T89C51AC2 microcontroller.

GMM AC2 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 AC2 offers a very low cost to learn 8051 Core, we have many starter kits options. For this purpose it is likewise interesting the GMM TST 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 40 pin male socket, dual in line, 100 mils pitch, 600 mils width.
  • Very small dimension: 20,8 x 53,5 x 12,8 mm.
  • Weight: 9,1 g.
  • 4 layers printed circuit to obtain best noisy resistance and best EMI performance.
  • No external programmer is needed as GMM AC2 is a grifo® ISP (In System Programming) Mini Module. FLASH of Micro is Programmable and Erasable by using serial line only.
  • Micro FLASH programming or deleting can be managed by using the FLIP program available from ATMEL.
  • Single power supply required +5Vdc 26mA (the current consumption can change according with module connections).
  • Availability of power saving setting as idle mode and power down mode.
  • Atmel T89C51AC2 microcontroller (8051 code compatibile) with 14,74 MHz crystal.
  • Programmable machine speed at 12 or 6 clock cycle.
  • 32K FLASH for code, 2K FLASH for boot loader, 256 bytes RAM for data, 1K ERAM for data, 2K EEPROM for data.
  • 8 A/D converter channels with 10 bits resolution, 20 µsec conversion time.
  • A/D reference voltage available on connector.
  • 14 interrupt sources with 4 priority levels.
  • 3 Timers Counters up to 16 bits
  • 5 PCA channels up to 16 bits with PWM, watch dog, compare, capture, etc. functionality.
  • 34 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 MAX202E, for RS 232 serial line, with ESD protection up to ±15KV.
  • Reset and power supply control circuit based on MAX825.
  • 8 configuration dip switches, with 3 dips acquired by software.
  • 2 status LEDs managed by software through digital I/O lines.
  • 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 (MCA51); C compiler (µC/51, HTC51, SYS51CW, DDS Micro C51); BASIC compiler (BASCOM 8051); PASCAL compiler (SYS51PW); 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 GMM TST that mount a grifo® Mini Module type GMM AC2

The picture shows grifo® Mini BLOCK GMB-HR168 equipped with grifo® Mini Module type GMM AC2; on left side without RTC option while on the right one with RTC otpion.


 A C C E S S O R I E S


GMB - Housing, 16 Opto-In, 8 Relay

Housing Mini BLOCK Module witch 16 Opto-In and 8 Relay Outputs; Serial Line RS232 or TTL, RS422/485, Current Loop; Power Supply.


W95/NT 8051-BASIC Compiler

BASCOM-8051© is a Windows BASIC COMPILER for the 8051 family It is designed to run on W95/NT and has all the features of BASCOM LT. In addition it has full support for arrays and the single floating point type.

µ C / 5 1

ANSI C Compiler for 8051

Develop high quality software for any 8051 in ANSI C. µC/51 comes with an incredible optimizing compiler, you can even write software in ANSI C on 8051's with 1kB of code memory! µC/51 is absolutely complete: user friendly multi file Editor, Compiler, Assembler, Downloader, Source
Level Debugger. You will not need anything else.


The LadderWORK Integrated Development Enviroment (IDE)

The picture below, represents the apperance of the program LadderWORK on your computer. LadderWORK has an integrated enviroment feature, allowing you to draw schematics, compile programs and upload code to PLC always working on the same window. The integrated enviroments are composed by several parts described below. 


Page up-dated at December 23, 2004

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