ZWERG11A Single Board Computer with MC68HC11, 2MHz

The Original

ZWERG11A is a single board computer for use in applications requiring compact constructions. The heart of the ZWERG11A is an highly integrated IC. The micro controller MC68HC11A1 contains a 8Bit CPU, A/D converter, various peripherals, timer system, interrupt system and memory. 256 bytes RAM and 512 bytes EEPROM are available. With an average instruction length of 2.5 bytes for the HC11, ca. 200 assembler instructions can be stored in the internal EEPROM. There is also a version of the ZWERG11A with 2KB EEPROM, using the MC68HC11E2 chip. In case the 512 bytes of the standard version are not sufficient, simply upgrade to the larger version. It can store about 1000 assembler instructions.

A development kit is available, containing a ZWERG11A board, the necessary cables, a serial interface module, a cross assembler and various auxiliary programs, among other things a tool for programming the MC68HC11A1/E2. User programs are programmed directly into the EEPROM of the HC11, an additional programmer is not necessary.

The software supplied with the development kit contains various example programs:

• In/output via the serial interface
• Control of alphanumeric displays (LCD)
• Control of graphic displays (LCD)
• Setting and reading the Real Time Clock (RTC)
• Displaying date and time from the RTC on a LCD
• Displaying the values of the ADC on a LCD
• Square wave generation at port A using a timer interrupt
• "We make music", i.e. the ZWERG11A produces sound with a loudspeaker
• Programming of the watchdog

In addition, assembler source routines are included as well as definition files for the hardware.

By factory default, each ZWERG11A comes with a simple monitor program in the EEPROM. With this monitor program, the user can immediately test the functions of the board.

ZWERG11plus is a single board computer compatible to the ZWERG11A. The essential difference is more RAM (32KB) and more EEPROM (32KB), as well as the higher current consumption.

 Technical Data

ZWERG11A Board 51mm x 54mm CPU MC68HC11A1 with 2MHz system clock 5V supply voltage, current consumption 0.1... 9mA software-controlled (11mA with IF232-Modul, if no RS232-load is driven) Reset controller with voltage monitor 256 Bytes RAM 512 Bytes EEPROM for programs Logic for program start from internal EEPROM TLX+/PIF-Bus for system extensions, for example graphic LCDs Serial interface on IF-module connector SPI (serial interface for peripheral components like parallel I/O, AD/DA converters etc.) Timer system with 16Bit registers (5 x Output Compare, 3 x Input Capture) A/D converter 8Bit, 8 channels Ca. 40 parallel in/outputs Connector for alphanumeric or graphic LCDs, poti for LCD-contrast Options CPU MC68HC11E2 (2KB EEPROM) Real Time Clock plus battery

Manual  Assembly  Diagram

 Development Kit

For a start we offer a complete development kit:

• ZWERG11A board
• IF232-Modul
• Cross assembler AS11, various auxiliary programs
• Example programs and definition files
• Terminal programm for communication with the PC
• Programming software for downloading
• All necessary cables
• A set of manuals

 Prices

Part Code	Details	EUR*
z11a-ent1	ZWERG11A development kit, supply scope as described above	132.94
z11a-ent2	Like z11a-ent1, with RTC plus battery NO LONGER AVAILABLE	150.24
z11a-e2-ent1	Like z11a-ent1, but with MC68HC11E2 CPU (2KB EEPROM) NO LONGER AVAILABLE	171.28
z11a-e2-ent2	Like z11a-e2-ent1, with RTC plus battery NO LONGER AVAILABLE	188.59
z11a-1	ZWERG11A board	40.39
z11a-e2-1	ZWERG11A board with MC68HC11E2 CPU (2KB EEPROM) NO LONGER AVAILABLE	78.74
RTC4553	Option RTC plus battery NO LONGER AVAILABLE	17.49
-	HC11 Reference manual	-

^*VAT and shipment not included. Quantity discounts on inquiry.

www.mct.net: Products: Single Board Computers

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