Hardware Description; Section 4 Hardware Description - Atmel megaAVR Getting Started

megaAVR™ Starter Kit Manual
The main features of the board are shown in the diagram below.
LCD CONTRAST
ADJUSTMENT
EXTERNAL
MEMORY EXPANSION
EXTERNAL
SRAM SOCKET
ADDRESS LATCH
IC FOR RAM
SELECTOR
FOR RS232
ISP INTERFACE
POWER ON AND
PROG LIGHTS
PORT B JUMPERS
DISABLE LEDS
RS232
POWER INPUT
9-15V DC
OR 7-12 AC
Note: There are a number of jumpers on the board which are used to select different
operations and voltages. The default jumper settings are for programming oper-
ations at 5V JP1 Closed, with brown-out also set to 5V JP2 Open.
To carry out other operations, some jumpers may have to be removed—refer to
the relevant section for details. A full list of the jumpers and links are given in the
following table.

Hardware Description

LK1 - CUT FOR A/D
LCD CONNECTOR
EXTERNAL REFERENCE
ON-OFF
8 SWITCHES
SWITCH
JP1 JUMPER FOR
ON PORT D
3.3 OR 5V VCC SELECT
Section 4
ANALOG REFERENCE
VOLTAGE ADJUSTMENT
ANALOG I/P
PLUG IN MEGA
BOARD HERE
PORT A DIGITAL
PORT B HEADER
4 MHz CRYSTAL
O/P PINS FOR -VE
SUPPLY TO
OPAMP ETC.
PORT C HEADER
PORT D HEADER
PORT D JUMPERS
DISABLE SWITCHES
PORT E HEADER
MISC. HEADER
FOR NON-PORT PINS
JP2 - JUMPER
FOR BROWN-OUT
AT 2.9V OR 4.5V
8 LEDS ON
PORT B
4-1