Contents
1 INTRODUCTION
....................................................................................................................................... 3
A
PPLICATIONS
.............................................................................................................................................. 4
F
EATURES
.................................................................................................................................................... 4
2
CONSTRUCTION OF THE MODULE
............................................................................................... 5
B
LOCK DIAGRAM
.......................................................................................................................................... 5
M
ODULE PIN
-
OUT
......................................................................................................................................... 6
AT
MEGA
128
MICROCONTROLLER
............................................................................................................. 13
E
THERNET CONTROLLER
LAN91C111
..................................................................................................... 13
M
EMORY CONTROLLER
.............................................................................................................................. 14
RAM
MEMORY
........................................................................................................................................... 19
D
ATA
F
LASH MEMORY
................................................................................................................................. 19
R
EAL
-
TIME CLOCK
...................................................................................................................................... 20
S
UPPLY OF POWER
.................................................................................................................................... 20
RESET
CIRCUIT
........................................................................................................................................ 20
LED
DIODES
............................................................................................................................................... 21
3
CONNECTION OF THE MODULE WITH THE EXTERNAL WORLD
....................................... 22
C
ONNECTION TO THE
E
THERNET NETWORK
............................................................................................. 22
RS-232
INTERFACE
................................................................................................................................... 23
RS-485
INTERFACE
................................................................................................................................... 23
USB
INTERFACE
........................................................................................................................................ 24
R
ADIO LINK
................................................................................................................................................. 24
LCD
DISPLAY
............................................................................................................................................. 25
E
XTERNAL PERIPHERALS ON THE SYSTEM BUS
......................................................................................... 26
4
PROGRAMMING THE MODULE
..................................................................................................... 27
ISP
CONNECTOR
........................................................................................................................................ 27
JTAG
CONNECTOR
.................................................................................................................................... 29
5
AN APPLICATION EXAMPLE
......................................................................................................... 30
6
EVALUATION BOARD
...................................................................................................................... 31
7
SPECIFICATIONS
.............................................................................................................................. 31
8
TECHNICAL ASSISTANCE
............................................................................................................. 32
9
GUARANTEE
...................................................................................................................................... 32
10
ASSEMBLY DRAWINGS
.............................................................................................................. 32
11
DIMENSIONS
.................................................................................................................................. 34
12
SCHEMATICS
................................................................................................................................. 34