AVR-MT128 Olimex Ltd., AVR-MT128 Datasheet - Page 7

• Manufacturer Part Number: AVR-MT128
• Description: MCU, MPU & DSP Development Tools DEV BRD FOR ATMEGA128 16MHZ 5V
• Manufacturer: Olimex Ltd.

Specifications of AVR-MT128

• Processor To Be Evaluated: ATMega128-16AI
• Data Bus Width: 8 bit
• Interface Type: RS-232, JTAG, SPI
• Dimensions: 120 mm x 38 mm
• Operating Supply Voltage: 5 V
• Tool Type: Development Kit
• Cpu Core: AVR 8
• Core Architecture: AVR
• Silicon Manufacturer: Atmel
• Silicon Core Number: ATmega128
• Kit Contents: Board
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 1701521 25R4413

POWER SUPPLY CIRCUIT:
RESET CIRCUIT:
CLOCK CIRCUIT:
JUMPER DESCRIPTION:
pin 31
frequency pin
connected to
INPUT/OUTPUT:
The power supply of AVR-MT128 is taken from Power jack connector. You
should apply 9 VAC or +12 VDC at the positive central pin.
The consumption of the board is about 30 mA.
AVR-MT128 reset circuit is made with ZM33064
4.5V. When the voltage falls bellow that minimum, the MSU resets.
Quartz crystal 16MHz for maximum performance is connected to
ATMega128 pin 23 (XTAL2) and pin 24 (XTAL1).
Additional 32 768 Hz tact generator is connected to ATMega128 pin 18
(TOSC2/PG3) and pin 19 (TOSC1/PG4) and supplies the Real Time Clock.
J
Status LED (red) connected to the relay.
Relay with name REL connected to ATMega128 pin 45 (PA6/AD6).
Trimmer LED_TR connected to the LCD.
Liquid crystal display.
Buzzer with name BUZZ connected to ATMega128 pin 6 (OC3B/INT4/PE4)
and pin 7 (OC3C/INT5/PE5).
User button B1 connected to ATMega128 pin 51 (PA0/AD0).
User button B2 connected to ATMega128 pin 50 (PA1/AD1).
User button B3 connected to ATMega128 pin 49 (PA2/AD2).
User button B4 connected to ATMega128 pin 48 (PA3/AD3).
User button B5 connected to ATMega128 pin 47 (PA4/AD4).
is connected to T2. When 2-3 is shorted the input frequency pin is
This jumper supplies the input user frequency FREQ to either
(T1/PD6) or pin 32 (T2/PD7). When 1-2 is shorted the input
T1.
Default state is 1-2 shorted.
with typical threshold