EA9777-3

Page 2

ELECTRONIC ASSEMBLY reserves

the right to change specifications

without prior notice. Printing and

typographical

errors

reserved.

Documentation of revision

Date

Type

Old

New

Reason / Description

2011-05-16

0.1

preliminary version

2011-09-14

1.0

First release

CONTENT

QUICK START ........................................................................................................................ 3

EA 9777-3 EVALUATIONBOARD ........................................................................................... 5

FUNCTION OF POTENTIOMETER ........................................................................................ 5

FUNCTION OF JUMPER, PUSHBUTTONS, LEDs ............................................................. 6-7

USB-INTERFACE ................................................................................................................... 7

POWER SUPPLY....................................................................................................................8

PORT EXPANSION EA 9777-2PE .......................................................................................... 8

DESCRIPTION PIN CONNECTOR I²C (EA 9777-3USB) ...................................................... 9

FUNCTION OF DIP-SWITCH I²C (EA 9777-2PE)................................................................... 9

DESCRIPTION PIN CONNECTOR RS232, RS485 (EA 9777-3USB) ................................. 10

FUNCTION OF DIP-SWITCH RS232, RS485 (EA 9777-2PE) ............................................. 11

DESCRIPTION PIN CONNECTOR SPI (EA 9777-3USB) .................................................... 11

FUNCTION OF DIP-SWITCH SPI (EA 9777-2PE) ............................................................... 11

TROUBLESHOOTING .......................................................................................................... 12

SCHEMATIC 9777-2PE ........................................................................................................ 15

SCHEMATIC 9777-3USB ..................................................................................................... 16